Data & statistics on Population Growth Rates in Sonoma County: Population Growth Rates in Sonoma County, Population Growth Rates in Sonoma County (1990-2000), Senior Population Growth - Sonoma County vs. California...
Data & statistics on Rural and urban population growth rates in Vietnam: Total, rural, and urban population growth rates in Vietnam for 1990-2003, Rural and urban population growth rates in Vietnam for 1995-20054, Looks at the implications of expected rapid urbanization on the rural populations in the LMB. Across all countries rural population growth rates are expected to decline from historical values, and rural populations are expected to decline from 123 million to 118 million. However, this overall decline is influenced by trends in the two large countries of Thailand and Vietnam where rural populations ......
Recent studies have shown that human populations have experienced a complex demographic history, including a recent epoch of rapid population growth that led to an excess in the proportion of rare genetic variants in humans today. This excess can impact the burden of private mutations for each individual, defined here as the proportion of heterozygous variants in each newly sequenced individual that are novel compared to another large sample of sequenced individuals. We calculated the burden of private mutations predicted by different demographic models, and compared with empirical estimates based on data from the NHLBI Exome Sequencing Project and data from the Neutral Regions (NR) dataset. We observed a significant excess in the proportion of private mutations in the empirical data compared with models of demographic history without a recent epoch of population growth. Incorporating recent growth into the model provides a much improved fit to empirical observations. This phenomenon becomes more marked
Award: Allendoerfer. Year of Award: 1978. Publication Information: Mathematics Magazine, Vol. 50, (1977), pp. 186-197. Summary: An historical survey of various models of population growth which gives attention to their character, derivations, and flaws.. Link to Article. About the Author(s): (from Mathematics Magazine, Vol. 50 (1977)) David A. Smith was born in New York City in 1938 and received a Ph.D. in algebra from Yale University in 1963. He is retired from Duke University. This article was written while on sabbatical at Case Western Reserve University. Professor Smiths interest in population dynamics was stimulated by research for his book, Interface: Calculus and the Computer (Haughton Mifflin, 1976). The present article grew from notes prepared for a calculus/differential equations class of Western Reserve sophomores.. ...
Downloadable! This paper examines the relationship between population growth and economic growth in developing countries from 1965 to 1985. Our results indicate that developing countries were able to shift their labor force from low-productivity agriculture to the higher-productivity industry and service sectors, and to increase productivity within those sectors, despite the rapid growth of their populations. We also find that at given rates of population growth, income growth is related to the time path of population growth and that population growth due to high birth and death rates is associated with slower income growth than population growth due to relatively low birth and death rates. Hence, the timing and components of population growth are important elements in the process of economic development.
we are publishing here the whole article published by PDI on the presidentiables stand on population growth. ---- How they stand on population Philippine Daily Inquirer First Posted 22:51:00 03/06/2010 MANILA, Philippines-Talk of the Town is running the stand of presidential candidates on a number of issues, starting with the countrys fast-growing population, now estimated…
In 2009 The Bixby Center co sponsored the Bixby Scientific Forum The World in 2050: A Scientific Investigation of the Impact of Global Population Changes on a Divided Planet. The results of the Bixby forum are published in a special issue of Philosophical Transactions of the Royal Society B: The Impact of Population Growth on Tomorrows World, a publication of the Royal Society, London with a forward by former Bixby Chair Malcolm Potts.. The experts writing in this volume conclude that slowing population growth is essential if the worlds poor are to be lifted out of poverty, and if the next generations are to live in a biologically sustainable economy. Coming from many disciplines, the authors emphasize how the size, rate of growth and age structure of the human population interact with many other key factors, from environmental change - including atmospheric pollution - to conflict and the breakdown of governance. Fortunately, the assumption that people must become richer or better educated ...
Review the j-shaped growth curve . Why does it appear that the human population does not follow the logistic growth curve that most other populations or organisms follow? In your opinion, what is the best way to deal with human.
Now, each barrel of oil has and energy equivalent of 6.117 × 10^9 J. Then for 32 billion barrels actually produced, we obtain an energy total of: 1.9 x 10^20 J. However, how much of this is used for transportation and other machinery-production processes? Well, nearly 90% or 1.7 x 10^20 J, leaving only: 2 x 10^19 J, but 95% of that is used for energy production to generate heat, air conditioning or other energy input uses. Still, there should be enough to provide food calories if the processes for production were energy-efficient. The problem is they arent - especially with annual food wastage, loss of crops to pests, etc ...
The climate-population relationship has long been conceived. Although the topic has been repeatedly investigated, most of the related works are Eurocentric or qualitative. Consequently, the relationship between climate and population remains ambiguous. In this study, fine-grained temperature reconstructions and historical population data sets have been employed to statistically test a hypothesized relationship between temperature change and population growth (i.e., cooling associated with below average population growth) in China over the past millennium. The important results were: (1) Long-term temperature change significantly determined the population growth dynamics of China. However, spatial variation existed, whilst population growth in Central China was shown to be responsive to both long- and short-term temperature changes; in marginal areas, population growth was only sensitive to short-term temperature fluctuations. (2) Temporally, the temperature-population relationship was obscured ...
Relative population growth affects relative prices through the so-called Balassa-Samuelson (BS) mechanism and that in turn impacts PPP. This paper empirically investigates the relationship between the PPP exchange rate and relative population growth in a panel of 80 selected countries. Following the BS hypothesis, this paper argues that relative population growth affects nominal wages that impact price levels and thereby impacts PPP. Using panel cointegration and fully modified ordinary least square (FMOLS), the empirical results show that there is a stable relationship between PPP exchange rate and relative population growth in the long run. These empirical findings suggest that population growth have an important role in exchange rate determination through PPP.. ...
But these policies must strengthen, rather than weaken, fundamental human rights and freedoms. life tables example. AP Environmental Science LCHS Dr. E. Population Dynamics Outline. The interaction between human population and agricultural production is complex.Intense debates have been continued on population growth against agricultural development. Achille Guillard first used the title on his book: Elements de Statistique Humaine ou Demographie Comparee. Exponential Population Growth (J CURVE) - When resources are UNLIMITED, population will increase ... -Human impact-Habitat loss. Human population timeline Take turns reading the cards out loud while we note on the timeline the important milestones in human population growth Total fertility rate : Average number of children a woman produces in a population throughout her life In a very short amount of time the human population exploded and is still growing very fast. Dynamics of are the underlying causes of change or determination of human ...
The population growth rate is reaching an astounding level in Tanzania and Eastern Africa. It is applying increasing pressure on things like social services, land availability, job opportunities, conservation and localized resources. This study looks at the perceptions of both men and women surrounding social and environmental factors contributing to the high population growth rate. It looks more specifically at factors including childbearing, birth control methods and their effectiveness, and how the birth rate correlates with changing quality of life. This study was conducted in Kizanda Village in the West Usambara Mountains of Northern Tanzania, a region following the trend of a high population growth rate as well as a recent introduction to Western birth control. This study took place from April 5th to April 23rd, 2014. Semi-structured interviews (n = 102) resulted in evidence of high use of local methods of birth control but also an increase in the use of Western birth control over the course of
Admission of more than one million immigrants per year adds significantly to the rapid population growth of the United States. Because some immigrants leave voluntarily or are deported the net population increase each year from immigrants is a bit less than one million according to the U.S. Census Bureau (USCB). The USCBs annually estimates the amount of population change from births, deaths, net domestic migration (interstate), and net international migration. The latter category is mostly the arrival and departure of foreigners.. Since mass immigration was unleashed by legislation in 1965, the share of the U.S. population increase due to immigration has grown rapidly. For example, the USCB data show net immigration accounting for 32 percent of the increase for the 1990-1999 period. For the most recent period (2010-2014), the share grew to 40.2 percent.. Those percentages, however, understate the impact of immigration on population increase. That is because the other factor in population ...
While it is easy to measure population growth, climate change has proved to be a more difficult concept. Globally, Asia and Africa are the regions that have been experiencing relatively fast population growth and they are the regions with the highest population of people living in poverty. The global population stands at 7.2 billion people by 2015, with annual growth rate of 1.18 between 2010 and 2015. The most developed countries have 1251 million people with growth rate of 0.9 over the same period. However, poorer regions hold most of the worlds population, with less developed and least developed regions having 6098 million and 954 million people respectively. The annual growth rate of population between 2010 and 2015 is 1.36 and 2.38 in less developed and least developed regions respectively. While United States of America has annual population growth rate of 0.8 between 2010 and 2015, Kenya has 0.5 over the same period. (UNFPA, 2015) ...
https://www.numbersusa.com/content/news/december-21-2012/us-forest-service-predicts-strain-natural-resources-due-rapid-population-growt [IMG]
Follow-up studies are of particular interest. One of the most important was carried out by Goldfarb who chose two groups of children of similar heredity. Those in the first group had been brought up in institutions until the age of 3 and then placed in the care of foster parents, whereas those in the second group had been handed over to foster parents from the outset. In all cases separation had taken place within the first 9 months of life. The lack of intellectual ability, and particularly the ability to conceptualize, were particularly marked in the group sent to an institution at an early age (22). On the effects of the length of the intersib interval Anastasi (11) reports on a French study in which . . . there were 1,244 two-sibling families . . . both siblings had been tested. These were separated into long interval and short interval sibships, the latter being defined as those falling at or below the median interval. On the intelligence test, the children with long intersib intervals ...
Unfortunately, in the rancor of the presidential primary season, discussion of the benefits immigrants bring to rural communities and states has gotten lost. In this two-part series, we aim to remedy that oversight. Todays post focuses on population growth. In Part 2, we will look at economic growth. Taken together, both population growth and economic growth from new Americans comprise a two-fold boost to rural communities.
Madagascar People 2003: Population, Age structure, Population growth rate, Sex ratio, Life expectancy at birth, HIV/AIDS - adult prevalence rate, Major infectious diseases, Nationality, Ethnic groups, Religions, Languages Age structure, Immigration.
2015 Uganda Population Growth Rate, Birth Rate, Death Rate, Net Migration Rate data, including comparisons against world and regional benchmarks. This page is part of Econ Stats, the Economic Indicators and Statistics Database that has been compiled by EconomyWatch.com from thousands of data sources, including the IMF, World Bank, World Economic Forum and CIA.
Lachish, S and Jones, ME and McCallum, HI (2007) The impact of disease on the survival and population growth rate of the Tasmanian devil. Journal of Animal Ecology, 76. pp. 926-936. ISSN 0021-8790 ...
Taking China as a case study, China is one country that almost suffered such an inevitable situation, but where able to manage and checkmate this problem by taking some bold steps like the limitation on the birth rate. Currently the world s population growth rate stands at about 1.4% (2000 est. Resources DPR Nigeria (2005), Chat on Nigeria fuel share of energy consumption, 2001 (Department Abstract PIP: The population of Nigeria is growing at a rate of 3.75%/year indicating a doubling of the population every 22 years. The Christian religion in turn prohibits the most effective forms of contraception and most are anti-abortion. emissions. If you take tribalism and multiply it by a high population - you will get a massive problem! However, it appears the population growth rate in Nigeria is influenced by the interplay of the three main demographic processes of fertility, mortality and migration. Factors Affecting Nigerias Underdevelopment. By acting as sustainable world viewers, Nigerians will ...
Everyone knows that the UNs 2015 Sustainable Development Goals were intended to literally make the world a better case. But a recent analysis shows how they might accomplish that in ways that may not have been expected. Based on an analysis by the International Institute for Applied Systems Analysis (IIASA) and the Asian Demographic Research Institute (ADRI) at Shanghai University, achievement of these goals could result in a significant decrease in population growth.While none of the 17 goals explicitly seek to reduce population growth, a number of them contribute to that result. The goals are aimed at fighting poverty, reducing inequality, hunger and sickness, as well as addressing climate change, while leaving nobody behind. They include enablers such as quality primary and secondary education for all children, improved sanitation, and reduced child mortality. While it may not be intuitively obvious that these actions would reduce population growth, according to this study, they will.Its hard to
President Donald Trump and the more than 50 new Members of the 115th Congress should learn about the critical issue of population growth. Students should submit an original photo showing how the U.S. environment is being damaged by population growth. With your photo, include your own 40-50 word description of why an official population policy will help to slow, halt, and eventually reverse our nations population growth - and protect environmental treasures in the U.S. Your submission may be used to create an NPG advertisement.. First ...
Elasticity is a perturbation measure in matrix projection models that quantifiesthe proportional change in population growth rate as a function of a proportionalchange in a demographic transition (growth, survival, reproduction, etc.). Elasticities thusindicate the relative importance of life cycle transitions for population growth and maintenance.In this paper, we discuss the applications of elasticity analysis, and its extension,loop analysis, in life history studies and conservation. Elasticity can be interpreted as therelative contribution of a demographic parameter to population growth rate. Loop analysisreveals the underlying pathway structure of the life cycle graph. The different kinds ofresults of the two analyses in studies of life histories are emphasized. Because elasticitiesquantify the relative importance of life cycle transitions to population growth rate, it isgenerally inferred that management should focus on the transitions with the largest elasticities.Such predictions based ...
The recent rapid increase in human population over the past two centuries has raised concerns that humans are beginning to overpopulate the Earth. The planet may not be able to sustain larger numbers of people. The population has been growing since the end of the Black Death, around the year 1400.[5] At the beginning of the 19th century, it had reached roughly 1,000,000,000 (one billion). Rapid population growth occurred all over the world, especially after World War II. By 1960, the world population had reached 3 billion, and it doubled to 6 billion over the next four decades. As of 2011, the estimated annual growth rate was 1.10%, down from a peak of 2.2% in 1963, and the world population stood at roughly 6.9 billion. In 2014, it is over seven billion. Current projections show a steady decline in the population growth rate, with the population expected to reach between 8 and 10.5 billion between the year 2040[6][7] and 2050.[8] The scientific consensus is that the present population growth and ...
This article discusses the Bixby publication The Impact of Population Growth on Tomorrows World a special theme issue of Philosophical Transactions of the Royal Society B.. Excerpt:. Philosophical Transactions of the Royal Society B-a journal from the Royal Society whose motto is Take nobodys word for it -wades into these treacherous waters this week with a special issue, The Impact of Population Growth on Tomorrows World. As Roger Short of the University of Melbourne writes in the introduction, The inexorable increase in human numbers is exhausting conventional energy supplies, accelerating environmental pollution and global warming, and providing an increasing number of failed states where civil unrest prevails, among other faults. And he goes so far as to call for a halt to future population growth.. Then again, ask other contributors to the special issue, is population growth even a problem? After all, as various nations have developed, birth rates have fallen-in some cases so much ...
Australias centre of population at June 2016 was approximately 40 kilometres east of the small service town of Ivanhoe in western New South Wales. This location reflects the concentration of population in south-east Australia. The centre of population moved around 13 kilometres west between 2006 and 2016. This shift reflects rapid population growth in Western Australia over this ten-year period. ...
Sheila Newman is writing a thesis in Environmental Sociology, comparing the population policies of Australia and France since 1945 and looking at trajectories to 2050. She welcomes responses to this article. - Malthusian Policies Eco-malthusianism is the philosophy of ecological and environmental organisations that apply the malthusian notion of scarcity not just to food *1 but to natural ammenites, such as human living space and wild spaces; biodiversity; natural resources, such as clean water, air and productive soil. The more ecological and biodiversity oriented among them tend to see solutions as lying in a bioregional approach, where population numbers and economies are adapted to regional biophysical limitations, leaving plenty of room for all native species and some well managed introduced ones. Eco-malthusianism is quite vestigial in France, existing only at the level of professional biological and zoological ecologists. The concept of biodiverse ecology has been subsumed to the notion ...
The human population has existed for a little more than 500,000 years. About 10,000 years ago, the total human population was about 3 million people, most of them hunters and gatherers. The development of early agriculture provided a stable supply of food and as a result the human population increased rapidly and reached one billion (1,000,000,000) in 1840. The development of technology and medicine in the 20th century reduced the death rate and increased the growth rate even further. Despite these advances, human population growth differs dramatically country by country. Your task is to design a presentation using a Power Point slide show to compare the population dynamics in an underdeveloped country and a developed country using the parameters outlined below ...
Three hours lecture per week. This course will explore the underlying causes of the current environmental sustainability crises, using lectures, case studies and recitation to explore and to understand the human impact on the Earths environment and the sustainability of human culture. The student will comprehend the causes and the extent of the unsustainable use of earths resources and the danger of the collapse of the planets environmental support systems. Topics will include: the exponential function as it applies to human population growth and resource use; the economic and political causes of the sustainability crisis; resource use and depletion; human population dynamics; the transition from fossil fuel energy to renewable energy; feeding a hungry world; climate disturbance (causes, mitigation and adaptation); denial of human impacts on the environment; and steps towards an environmentally sustainable human society. Prerequisite: 101 or BIOL 160 and 161.. ...
Jake Rice and … economist Serge Garcia, are concerned that measures to conserve marine biodiversity are in contradiction with policies to protect food security, with the likely upshot that both will fail to address their respective goals.. The conundrum is straightforward: by mid-century, therell be an additional 2 billion people on earth, each of whom will need to eat. In total, theyll require an extra 3.65*108 of dietary protein. Forecasts suggest that well need an 11% increase in irrigation for grain production just to keep pace with human population growth, not withstanding the impacts of climate change on crops and water availability. Right now, one-third of the worlds population relies on fish and fisheries products for at least one-fifth of their annual protein intake; if that continues to be the case, well need around 70 million metric tonnes more fish protein by 2050, says Rice.. Thats something like 75-100% of current fish protein production. So how can we generate this and ...
Hanson in his brief makes a good case for more than half the existing human population being killed off - likely by starvation, disease or violence. The starvation will come because of dwindling oil supplies available for mass food production. There are currently barely 1.2 liters per person per day available for food production, storage and transport in a world of 7.3b people. This compares to 2.2 L in the 1970s when there were 2.7- 3.0b fewer mouths to feed. From 2005 this will diminish by 2-4% per year contingent on population growth - currently at 85m a year. By the time the population reaches 9-10 billion by 2050, that production level may be barely 0.5 L per person which telegraphs mass starvation ...
The imminent P shortage is the unknown crisis of the 21st century despite the fact that it was a major concern to the office of Franklin D. Roosevelt over 80 years ago. Although many people do not consider P in their day to day lives, P shortages and limitations will have a deleterious effect on world nutrition and food supply in the imminent future. Most independent reports agree that world peak phosphorous will occur by the year 2035. At our current rate of P consumption (2-3% annual growth), the total world P supply will run out between 2075 and 2100. To perplex the issue further, with the current rate of human population growth, the global population will reach ~9.5 billion by the year 2050. So, we will have increased demand for a depleting resource. The last, and perhaps most troubling issue, is that 72-85% of the worlds phosphorous supply held by Morocco. And of this percentage, 10% is locked up in a dispute between Western Sahara and Morocco over the Bou Craa mine that has sparked a ...
The causes and conditions we observe and experience today and which will be observed and experienced in the future are not the result of human beings in general being significantly more intelligent or skillful now than they were in past generations. It took only a very small number of human beings to develop the various means for rapidly increasing and improving on our methodologies and technologies for exploiting the planetary resources. This has enabled both the vast resulting human population growth and the rapid widespread growth in human desires for ever more resource consumption. However the overall quantities and qualities of planetary resources remains limited, increasingly subjected to forces of entropy and increasingly more resource intensive to acquire. When the global population grows daily by the equivalent of the population of Germany and the amount of land suitable for growing food continues to be lessened by the development of other land uses and soil continues to loose more ...
Nov 2001 Along with nuclear proliferation and the deteriorating condition of the natural environment, human population growth has become an issue of significant public concern during the past century. With the global population increasing at an ever-accelerating rate, how can the world continue to support its freight of humanity? Certainly, the increasing rate of population
Human population growth brings with it a huge demand for goods and services, which increases over time. It is currently recognized that the environment and biodiversity provides multiple benefits to humans beings through environmental services; however, these have been altered gradually by the use and abuse of these natural resources by society (Herrmann et al. 2016). The planet is a dynamic entity that has undergone major alterations in its physiography and lost much of its former biological diversity on multiple occasions throughout its history. Today, most of the serious environmental problems our generation faces are either caused or aggravated by human actions; some examples are the introduction of exotic species, changes of land use, or climate change. These three factors disrupt biological patterns and processes and impact ecological relationships shaped over millions of years, such as those between hosts and parasites (Brooks and Hoberg 2007).. Anthropogenic activities may foster changes ...
World governments, the public, and the UN now recognize that the human population number matters in achieving ecological sustainability for human communities.. For forty years, since the first United Nations environment meeting in Stockholm in 1972, environmentalists have debated whether we should include human population growth among the urgent challenges of human consumption, industrial toxins, species loss, global warming, and so forth.. This debate appears to be resolved. Clearly, human population figures have an impact on the health of natural ecosystems. Virtually every nation in the world seeks more commodities for its citizens, and a growing population multiplies the effect of this growing per-capita resource consumption. We could make all the right moves regarding energy systems, transportation, and recycling, and still overshoot Earths capacity with unsustainable numbers of humans. It is a good sign that the United Nations now recognizes this.. UN special session on population. Next ...
Human Population Growth Historically Early Hunter Gatherers Nomadic, With a Strong Sense of the Earth Practiced Intentional Birth Control Rise of Agriculture Necessary for Survival Animals became extinct via predation and altered habitat Humans began to cultivate own food
Revised data on population growth shows Africa growing even faster than analysts thought. Nigeria will be more populous than the U.S.
About 2.5 billion people, two-fifths of the worlds population, live in parts of the world affected by dengue, and an additional 120 million people travel to dengue-affected areas annually. Between 50 and 100 million people are infected each year, and the World Health Organization says the number is rising due to human population growth and the increased spread of vector mosquitoes. Unlike malaria, dengue is more prevalent in urban than rural areas. Dengue illness involves sudden severe headache, muscle and joint pain, diarrhea, vomiting, and a high fever typically lasting about a week. In a small number of cases, it develops into dengue hemorrhagic fever and proves fatal ...
Human population growth has resulted in more frequent interactions between humans and wildlife, making it increasingly important to understand how anthropogenic disturbance affects animal populations. A number of recent studies on birds have shown that individuals experiencing high levels of disturbance are frequently more aggressive than conspecifics living in less disturbed areas. Our study asked whether heterospecific aggression varied in Western Bluebirds (Sialia mexicana) breeding in artificial nest boxes over a gradient of human disturbance in the Okanagan Valley of British Columbia, Canada. Unlike most previous studies, which have investigated effects of high disturbance (urbanization), our study focused on sites with lower rates of human disturbance, including ranch lands, vineyards, and recreational trails. Using decoys and playback, we measured the response of bluebird pairs to a simulated territory intrusion by one of two heterospecifics: a competing cavity nester, the House Wren ...
With the availability of advanced genomics research tools, scientists are increasingly looking to genome-level approaches to optimize productivity, nutrition, and viability of many agricultural products. Agrigenomics researchers are coming to rely on genomics to help address the rising constraints in our worlds food supply caused by such events as human population growth and global weather pattern changes ...
On-going human population growth and changing patterns of resource consumption are increasing global demand for ecosystem services, many of which are provided by soils. Some of these ecosystem service
Background. This paper explores the framings of trypanosomiasis, a widespread and potentially fatal zoonotic disease transmitted by tsetse flies (Glossina species) affecting both humans and livestock. This is a country case study focusing on the political economy of knowledge in Zambia. It is a pertinent time to examine this issue as human population growth and other factors have led to migration into tsetse-inhabited areas with little historical influence from livestock. Disease transmission in new human-wildlife interfaces such as these is a greater risk, and opinions on the best way to manage this are deeply divided.. Methods. A qualitative case study method was used to examine the narratives on trypanosomiasis in the Zambian policy context through a series of key informant interviews. Interviewees included key actors from international organisations, research organisations and local activists from a variety of perspectives acknowledging the need to explore the relationships between the ...
Following the entry of Zea mays to northeast North America, there are indications of human population growth, suggesting crop intensification. Isotopic values from bone collagen have been inconsistent with this hypothesis, showing temporal and regional fluctuations that have led to hypotheses of sporadic overreliance on this super-crop. Following Katzenbergs suggestion that intake of this carbohydrate should be measured through apatite rather than protein tissue, and with the permission of the Huron-Wendat Nation of Wendake, Quebec, we measured tooth enamel δ13C from 167 permanent tooth crowns (most M1), retained after reburial of the skeletons. Enamel values encapsulate diet from early childhood (3 to 4 years of age). The teeth represent 16 ancestral Huron-Wendat sites in southern Ontario. Isotopic values show a gradual increase in reliance on maize from the 14th to 17th centuries, perhaps reflecting development of crop strains that were more reliable at higher latitudes. This pattern of δ13C
After reading this entry, I have become more aware on the increasing issue regarding the Pine Rockland. Unfortunately there are so many people living in South Florida who is not aware of the damage their causing. As mentioned in the blogpost, development and human population growth are the biggest enemy to the natural Pine Rockland species. It is imperative for the locals to become more informed and do something to help preserve the natural Pine Rocklands. It is truly a shame that people can purchase these areas and continue to destroy our natural ecosystem. All in all, if local neighborhoods surrounding some of these Pine Rocklands begin to spread the word I firmly believe that therell be a chance of preserving them ...
The old adage that the solution to pollution is dilution still holds true today. Thousands of chemicals are released into the environment, deliberately or accidentally, by humans, and many are found in measurable levels in water, air, land, wildlife and people. Because of unprecedented human population growth, environmental pollution is expected to increase, and the contributions of chemical pollution to wildlife declines is a grave concern. Taking Pacific salmonids as our starting point, well discuss the major classes of chemical contaminants attracting attention around the world, and look at progressive solutions that may help combat pollution.. ...
One of the primary purposes of the U.S. Census is to measure population distribution and change. Although the nation as a whole has continued to expand, growth has been far from uniform. Between 1990 and 2000, 684 of the nations 3142 counties reported a population loss, many of these in the Great Plains states. At the same time, five counties (three in Colorado and two in Georgia) more than doubled their population, and another 80 counties experienced growth rates greater than 50 percent. Altogether, 1109 of the nations counties reported growth that exceeded the national growth rate of approximately 13 percent between 1990 and 2000. For more information on population growth in the United States, see our rankings. ...
Choose the location for which you want to calculate the population growth rate. This could be for the entire United States, a specific region, state or smaller area, depending on the purpose of your calculation and how you will use that data. This example will focus on the city of Las Vegas, Nevada.. Determine the years you want to compare. This could be the population growth rate from one year to another, or you might want to determine what the increase or decrease was over a longer span of time, such as 10 or even 50 years. As an example, lets calculate the population change from 2000 to 2007 for Las Vegas, Nevada.. Determine the population in the starting year for your population growth rate comparison. The U.S. Census Bureau has a website with information to help you find these numbers for the location you are comparing (see Resources). The starting population in Las Vegas, Nevada, for the year 2000, according to the U.S. Census Bureau website, was 478,434.. Determine the population for the ...
Solomon Islands Population Growth Rate table by year, historic, and current data. Current Solomon Islands Population Growth Rate is 2.01%.
Population growth (annual %) in Mozambique was last measured at 2.76 in 2015, according to the World Bank. Annual population growth rate for year t is the exponential rate of growth of midyear population from year t-1 to t, expressed as a percentage . Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship--except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of the country of origin.This page has the latest values, historical data, forecasts, charts, statistics, an economic calendar and news for Population growth (annual %) in Mozambique.
Azerbaijan People 2008: Population, Age structure, Population growth rate, Sex ratio, Life expectancy at birth, HIV/AIDS - adult prevalence rate, Major infectious diseases, Nationality, Ethnic groups, Religions, Languages Age structure, Immigration.
The new population estimates are out for large and small urban centres (CMAs and CAs). I have already seen articles and posts from city managers, etc. talking about how well their population growth did during the pandemic. Probably wise not to put the cart in front of the horse. The population estimates are for July 1 - basically only one quarter into the pandemic. In other words the population, migration and immigration estimates are mostly for the 8 months before the pandemic even started. Probably not a good idea to link these numbers to your communitys pandemic results. Anyway here is the detailed data for NB urban centres. The Moncton CMA added 2,850 to its population in 2020 (July 2019 to June 2020) down from 3,310 the year before - likely a Covid-19 impact but we dont know yet. Still that was enough to make the Moncton CMA 7th out of 35 CMAs for population growth - second only to Halifax east of Oshawa. Fredericton had a strong population growth and Saint John added population again - ...
Southern Nevada ecosystems are subject to a number of stressors that range in scope from local to regional to global. At the regional scale, human population growth and related activities constitute a major stressor. Nevada has undergone significant change due to unprecedented population growth and ongoing global change processes. Nevadas growth rate has been the highest in the nation for the last five decades ...
Damage from aphids to wheat plants is noticeable from a distance and can result in water stress, reduced plant growth and wilting. Different aphids are said to cause different colorations when damaging the plants. The comparison of aphid performance on a set of closely related species can help identify traits related to plant defense and aphid performance. Such studies can help inform future experiments that study specific mechanisms of plant resistance. Its important to know what causes aphids to damage some plants more than others so we can find ways to prevent it. I observed the effects that wheat, barley and sorghum have on the population growth rate of corn leaf aphids and green bugs. Also, the effect the aphids have on the plants and how much they damage each type. Will one aphid species have an exceptionally higher rate of reproduction on a specific plant? Is aphid population growth affected by competition between species? I found the green bug population grew faster than the corn leaf ...
Fulton Countys population growth from the 2000 decennial census through the 2010 Census grew by 4.1 percent, a rate higher than the states growth rate of 3.4 percent, according to U.S. Census data released last week.. During the 10-year period, the countys population increased from 14,261 in 2000 to 14,845 in 2010. All but five of the countys 13 municipalities gained population. Only Ayr, Dublin, Taylor, Wells and Valley-Hi Borough lost population during the decennial period. Townships experiencing the largest rate of growth were Brush Creek, Licking Creek and Union, all posting double-digit growth. The borough of Mc- Connellsburg also grew by 13.7 percent during the period.. Fulton Countys modest increase in population was enough to rank it as the 26th highest (out of 67 counties) in the state in terms of population increase. Counties losing the most in population were Cameron, Elk and Fayette counties.. Franklin County experienced a huge population growth during the 10-year period and ...
Contact: Susan Ferris Hill, S.C. Sea Grant Consortium, (843) 953-2092, [email protected] or Christine Laporte, (706) 542-1280, [email protected] The South Atlantic Regional Research Project (SARRP) recently released a plan identifying critical research needed to protect the health of coastal ecosystems and the economies that depend upon them in the southeastern United States. Funded by the NOAA National Sea Grant College Program, SARRPs regional scope extends from Currituck Bay, near North Carolinas border with Virginia, to the southern tip of Florida. The report acknowledges that currently the southeastern coastal waters are healthier than most other coastal regions along the mainland U.S., but human population growth, increased urbanization, conflicting uses of coastal and ocean resources, offshore energy and resource development and the hazards associated with hurricanes and climate change pose threats to the environmental and economic health of the region.. SARRP was managed ...
Resource recovery from waste-streams is a highly promising approach to meet with urbanization and modernization consequences. Rapid human population growth, expanding industrialization and excessive consumption of resources lead to increasing demand for raw materials and energy sources, and an escalation of greenhouse gas emission. The recovery of valuable raw materials from waste-streams is a vital step towards environmentally friendly and sustainable bio-based production. One of the most promising resource recovery approaches from waste-streams is based on anaerobic digestion. In recent years, anaerobic digestion technology has started to go beyond energy recovery with the carboxylate platform. Volatile fatty acids (VFA) are intermediate products of anaerobic digestion and possess great potential for bio-based production from waste streams. Because of its wide range of applications, high market demand and low greenhouse gas emissions, bio-based VFA production has gained attention in recent ...
Resource recovery from waste-streams is a highly promising approach to meet with urbanization and modernization consequences. Rapid human population growth, expanding industrialization and excessive consumption of resources lead to increasing demand for raw materials and energy sources, and an escalation of greenhouse gas emission. The recovery of valuable raw materials from waste-streams is a vital step towards environmentally friendly and sustainable bio-based production. One of the most promising resource recovery approaches from waste-streams is based on anaerobic digestion. In recent years, anaerobic digestion technology has started to go beyond energy recovery with the carboxylate platform. Volatile fatty acids (VFA) are intermediate products of anaerobic digestion and possess great potential for bio-based production from waste streams. Because of its wide range of applications, high market demand and low greenhouse gas emissions, bio-based VFA production has gained attention in recent ...
Both men and women play a role in human population growth, but when it comes to reproductive decisions, women are disproportionately affected by a lack of empowerment and access to healthcare. Many women are unable to get the contraception or family planning tools they want or need to make decisions about their reproductive futures. Unfortunately lawmakers are currently doing everything they can to restrict reproductive healthcare, including education and access to contraception.. Reproductive rights are an environmental issue. In order to make sure we leave room for wildlife, its critical that every pregnancy is planned and that people take the environment into consideration when planning when - or if - they want their family to grow. When women have access to voluntary contraception and equal education, they tend to choose to delay childbearing and have smaller families, leading to lower fertility rates.. We support unfettered access to education, reproductive healthcare and contraception for ...
Population growth rate: The average annual percent change in the population, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country. The rate may be positive or negative. The growth rate is a factor in determining how great a burden would be imposed on a country by the changing needs of its people for infrastructure (e.g., schools, hospitals, housing, roads), resources (e.g., food, water, electricity), and jobs. Rapid population growth can be seen as threatening by neighboring countries ...
Population decline: Problems and countermeasures. Presentation on 9 December 2014 by Paul Demeny (Demeny Pal Gyorgy). Distinguished Scholar of the Populat Council,. External Member of the Hungarian Academy of Sciences. Abstract. In the post-World War II decades the central international demographic issue was the extraordinarily rapid rate of population growth in the so-called third world. In the past seventy years the wide differential between rich and less developed countries in terms of changing population size resulting from markedly different patterns of the transition from relatively high fertility and high mortality to low fertility and low mortality had far-reaching economic, social, and geopolitical consequences. Rapid population growth in the LDCs imposed added economic burdens on the latter groups development and generated national and international programs seeking to moderate the resulting imbalance between resources and population size. Nevertheless, the population growth ...
1. A changing environment directly influences birth and mortality rates, and thus population growth rates. However, population growth rates in the short-term are also influenced by population age-structure. Despite its importance, the contribution of age-structure to population growth rates has rarely been explored empirically in wildlife populations with long-term demographic data. 2. Here, we assessed how changes in age-structure influenced short-term population dynamics in a semi-captive population of Asian elephants (Elephas maximus). 3. We addressed ...
Rural population growth (annual %) in Gambia was reported at 1.2292 % in 2018, according to the World Bank collection of development indicators, compiled from officially recognized sources. Gambia - Rural population growth (annual %) - actual values, historical data, forecasts and projections were sourced from the |a href=https://data.worldbank.org/ target=blank>World Bank|/a> on August of 2020.
Rural population growth (annual %) in Dominica was reported at --0.7821 % in 2018, according to the World Bank collection of development indicators, compiled from officially recognized sources. Dominica - Rural population growth (annual %) - actual values, historical data, forecasts and projections were sourced from the |a href=https://data.worldbank.org/ target=blank>World Bank|/a> on February of 2020.
Rural population growth (annual %) in Gabon was reported at --1.0684 % in 2019, according to the World Bank collection of development indicators, compiled from officially recognized sources. Gabon - Rural population growth (annual %) - actual values, historical data, forecasts and projections were sourced from the |a href=https://data.worldbank.org/ target=blank>World Bank|/a> on March of 2021.
21 cities (2.5%) from low-income countries (e.g. Kathmandu in Nepal, Dar es Salaam in Tanzania). The findings revealed unevenness between built-up areas expansion (BUAE), which reflects the pace of infrastructure development, and urban population growth among the cities; and a widening gap between rapid urban population growth and slow urban greening, represented by features including new parks, green spaces and green roofs.. Cities in the upper-middle-income countries demonstrated the highest BUA expansion, which was more than three times that of high-income countries. Urban expansion and urban population growth in high-income countries remained the lowest. Cities in the low-income and lower-middle-income countries had the highest urban population growth on average, but were substantially lagging behind in BUA expansion and infrastructure development, resulting in serious urban problems such as slums and crowding.. The findings also revealed rapid urbanization of large cities in China in the ...
The above two conditions confirm that our national economic growth rate which is the basis for determining the growth rate of per capita income along with population growth rate, is still relatively low and has not been able to lift the relative global position of the economy and the income of our population internationally. This can be called a trap of low economic growth trap (low economic growth trap and low income per capita growth trap). Which also means that it takes a much higher national economic growth to be able to catch up with the above positions in the not too distant future. That is coupled with national population growth rate control as well.. Learning from the experience and achievements of the Chinese state in terms of economic growth, with one of the worlds highest economic growth rates, China, despite being one of the superpowers currently with the United States and Russia, from per capita income level aspect has not been able to match Thailand and Malaysia. For Indonesia, ...
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It is true that countries like Kenya and Pakistan and some other developing countries have high population growth rates. And that is a real tragedy for Kenya and Pakistan, which are trying to improve their lot but are getting overwhelmed with more people to feed, Pulitzer Prize-winning author Jared Diamond told Living on Earth host Bruce Gellerman in a recent interview. But its not a tragedy for the rest of the world because those people in rapidly growing third world countries dont consume very much. The real tragedy for the world is the growth rate of population and consumption in the first world. Diamonds comments echoed points he made in a January 2008 New York Times op-ed, in which he argued that total consumption, not total population, is the real threat to Earths dwindling natural resources. ...
Uganda has one of the youngest and most rapidly growing populations in the world; its total fertility rate is among the worlds highest at 5.8 children per woman. Except in urban areas, actual fertility exceeds womens desired fertility by one or two children, which is indicative of the widespread unmet need for contraception, lack of government support for family planning, and a cultural preference for large families. High numbers of births, short birth intervals, and the early age of childbearing contribute to Ugandas high maternal mortality rate. Gender inequities also make fertility reduction difficult; women on average are less-educated, participate less in paid employment, and often have little say in decisions over childbearing and their own reproductive health. However, even if the birth rate were significantly reduced, Ugandas large pool of women entering reproductive age ensures rapid population growth for decades to come.. Unchecked, population increase will further strain the ...
We investigate the effects of different levels of predation pressure and rodent dispersal on the population dynamics of the African pest rodent Mastomys natalensis in maize fields in Tanzania.Three levels of predation risk were used in an experimental set-up: natural level (control), excluding predators by nets and attracting avian predators by nest boxes and perch poles. Because dispersal of the rodents could mask the predation pressure treatment effects, control and predator exclusion treatments were repeated with enclosed rodent populations.Population growth during the annual population rise period was faster in the absence of predators and peak population size was higher, but otherwise dynamics patterns were similar for populations where predators had access or were attracted, indicating that compensatory mechanisms operate when rodents are exposed to high levels of predation risk. Reducing dispersal of rodents removed the effect of predation on population growth and peak size, suggesting ...
The ends are simple. Reduce population and present it as justifiable to the witnesses so theyll cooperate in the rebuilding. Yes. Rebuilding. Rebuilding will occur after the war theyre brewing occurs. See a book called The Club of Rome written in the early fifties by one of the first global think tanks. The book presents the findings of a computer based model designed to reveal the effects of industry and population growth on the planet. Factors such as resources (both renewable and nonrenewable), pollution, population growth, and economics were added to the computations. What the Club of Rome discovered was that our current growth is unsustainable and that catastrophy is inevitable unless population growth is curtailed or cut to drastic levels. Roughly 35 percent of current population. The participants in this first think tank were none other than the very same bankers, world leaders and industrialists (or their reps) we know of today. Simply put, the powers that be (shadow gov) know what ...
All populations fluctuate stochastically, creating a risk of extinction that does not exist in deterministic models, with fundamental consequences for both pure and applied ecology. This book provides an introduction to stochastic population dynamics, combining classical background material with a variety of modern approaches, including previously unpublished results by the authors, illustrated with examples from bird and mammal populations, and insect communities. Demographic and environmental stochasticity are introduced with statistical methods for estimating them from field data. The long-run growth rate of a population is explained and extended to include age structure with both demographic and environmental stochasticity. Diffusion approximations facilitate the analysis of extinction dynamics and the duration of the final decline. Methods are developed for estimating delayed density dependence from population time series using life history data. Metapopulation viability and the spatial scale of
Many karst regions are undergoing rapid population growth and expansion of urban land accompanied by increases in wastewater generation and changing patterns of nitrate (NO3âˆ) loading to surface and groundwater. We investigate variability and sources of NO3∠in a regional karst aquifer system, the Edwards aquifer of central Texas. Samples from streams recharging the aquifer, groundwater wells, and springs were collected during 2008â€12 from the Barton Springs and San Antonio segments of the Edwards aquifer and analyzed for nitrogen (N) species concentrations and NO3∠stable isotopes (δ15N and δ18O). These data were augmented by historical data collected from 1937 to 2007. NO3∠concentrations and discharge data indicate that short-term variability (days to months) in groundwater NO3∠concentrations in the Barton Springs segment is controlled by occurrence of individual storms and multi-annual wet-dry cycles, whereas the lack of short-term variability in groundwater ...
The article pasted below is by Jessica Orwig, a science writing intern at the American Geophysicist Union; it reports on a study led by Wouter Buytaert, of Imperial College London, which took a look at the population and water availability dynamics in the tropical Andes. The abstract of that study is as follows:. Globally, water resources for cities are under increasing stress. Two main stressors are climate change and population growth, but evaluating their relative impact is difficult, especially because of the complex topology of water supply. This is especially true in the tropical Andes, which is a region with strong climatic gradients and topographical limits to water resources. This paper presents an evaluation of both stressors on water resources in a geospatial framework to identify gradients in water availability that may lead to conflicts over water use. We focus on 4 major cities in, or receiving water from the tropical Andes… In all cases, the median projection of climate change ...
This study examines the relationship between confict and demographic trends in Mali - notably fertility, mortality, and migration. Malis demographics are similar to those in neighbouring Niger, Burkina Faso, and Guinea, and refect broader trends across Sub-Saharan Africa: rapid population growth, high fertility rates, poor government services and a surging urban, unemployed youth population. Those aggregate factors may put a country at greater risk of confict, but, contrary to expectations, they do not actually offer a causal explanation for the confict in Mali.
Issues in Modification of Abortion Laws. Pressure for Reform of Abortion Laws. As Taboos against open discussion of abortion fall away, pressures are rising to liberalize state statutes limiting the conditions under which doctors may lawfully terminate a pregnancy. Current interest in reform of abortion laws appears compounded chiefly of pity for women driven to seek illicit and often dangerous means of preventing an unwanted birth-and of impatience with laws that appear to be out of key with actual practice.. Anxiety over the effects of rapid population growth also plays a part in directing attention to the abortion problem. Experts believe that the prevalence of abortion, legal or illegal, has contributed significantly to forestalling still greater expansion of world population than that now occurring. Their answer to moralists opposed to easing American abortion laws is to demand support of birth control programs that will effectively hold down birth rates. Moral, legal and medical questions ...
Methodology. To generate our ranking, we looked at employment growth in the 366 metropolitan statistical areas for which BLS has complete data going back to 2005, weighting growth over the short-, medium- and long-term in that span, and factoring in momentum - whether growth is slowing or accelerating. (For a detailed description of our methodology, click here.). The South Rises Again. The shift to the South seems to be based on several factors: lower costs (including for housing), less regulation and expanding markets, driven by rapid population growth. As population has shifted to the South, most notably low-tax states like Tennessee and Texas, it has clearly increased local demand for financial services. But theres also another factor: the migration of financial jobs from traditional centers such as New York, Chicago and Los Angeles.. Our top emerging financial superstar, Nashville, has all these characteristics.. Since 2010, the areas financial workforce has expanded 24.5 percent to ...
By Halle-Beth Jones Sydney has the largest city population in Australia. With a population estimated around 4,627,345 and still growing, population growth and urban sprawl are instigating some major impacts. The effects outlined below are just a few of the key features that are worth discussion. Due to the urban sprawl in Sydney, the environment in the city has been impacted in many negative ways. Air pollution has drastically increased with the large amount of motor vehicles in use due to a ris
This study offers a comprehensive, up-to-date survey of global patterns of international migration and the policies employed to manage the flows. It shows that international migration is not rooted in poverty or rapid population growth, but in the expansion and consolidation of global markets. The insertion of non-market societies into global networks of trade unleashes structural transformations that displace people to create migrants.
The potential for a desalination plant was promoted through the late 2000s in response to an increasingly severe drought which saw Melbournes water storages go from 57.1 per cent of capacity in January 2005 to 28.7 per cent in June 2007. The project was part of the Victorian Governments Our Water, Our Future water plan which included associated projects such as the North-South Pipeline, the Cardinia Pipeline and a proposed interconnector to Geelong.[6] The total average inflow into Melbourne dams from 1913 to 1996 was 615 gigalitres (2.17×1010 cu ft) per year, while average inflow 1997-2009, during Victorias most severe recorded drought was 376 gigalitres (1.33×1010 cu ft) per year.[7] The combination of drought and rapid population growth put pressure on reserve storage capacity which had dropped from 97.8 per cent in 1983 to just over one-quarter of maximum capacity in 2007.[8][9] As a result, water restrictions were in place for several years.[10] The desalination plant and associated ...
ECONOMIC CRISIS Severe economic crisis intensified social problems created by industrialization and rapid population growth from 1845 on Began in agricultural sector and then spread to industry Poor grain harvests hit most countries in 1845 and 1846 Caused food prices to skyrocket Demand for manufactured products declined as people now spent a larger proportion of their incomes on food Unemployment therefore increased dramatically Connected in an indirect way to crisis was a serious contraction of credit Caused cash flow problems for many and led to numerous bankruptcies
The major impetus for adopting Trestles Internet microscopy technology, according to Dynacare Kaspers president, Thomas Higa, MD, was to enable its clients in non-urban, less-populated regions to link to Dynacares eighteen pathologists in real-time consultation.. When the Province of Alberta restructured the health care system, stated Dr. Higa, it created a series of Regional Health Authorities, some of which were responsible for providing care to large geographic areas but often with only a couple of pathologists, and sometimes with none. Using Trestles solution, we can use real-time teleconsulting to share the expertise of our medical staff with doctors at any of our clients facilities.. The recent deployment of a Trestle MedMicro system at a Regional Health Authority site in the city of Fort McMurray demonstrated the value Trestles solution can provide for Dynacare Kasper. The city is experiencing rapid population growth due to its thriving oil business, but is geographically ...
Most people believe having a lawn and yard that is safe for both humans and the environment is important. However, some lawn and yard care practices can create water quality problems. EPA estimates that about 80% of synthetic lawn fertilizers wash into local waterways. Synthetic fertilizers, because they are quick release, end up spreading nutrients into the environment much more quickly than organic fertilizers. When lawns are watered, or when it rains, synthetic fertilizer ends up washing into storm drains and from there into local streams and rivers. These rogue nutrients end up feeding a host of bacteria and algae, causing rapid population growths, or blooms. These blooms can be, and often are, deadly to local wildlife and harmful to human users of ponds and rivers. Species like cyanobacteria (blue-green algae) feeds on these nutrients, and produce toxins harmful to humans and other animals. They also use up the oxygen in water, causing plants and animals to suffocate. ...
To describe the modifiable lifestyle risk factors for stroke among a high risk population for stroke. Africa suffers from rapid population growth, adoption of harmful western diets, and increased prevalence of hypertension and obesity. A total of 440 study participants were screened and 87 individuals with hypertension plus at least one other known stroke risk factor were enrolled. The prevalence of hypertension and diabetes mellitus in the screened population was 19.7 and 1.8%, respectively. Among those with hypertension only 2.3% (2/87) had ever had serum lipid assessment. Seventy-two percent (68/87) had very high serum LDL-cholesterol, while 33.3% (29/87) had low levels of HDL-cholesterol, and 67.8% had mean blood pressures greater than 160/100 mmHg and 40% (35/87) were obese, with a BMI ≥30. Targeting individuals with modifiable stroke risk factors and implementing self-management programs may be a way to reduce stroke burden in Uganda.
Due to rapid population growth and forward planning for world events, several cities in the Middle East are developing underground infrastructure to raise living standards for residents and visitors alike. In Qatar, several ongoing projects are redefining and transforming the landscape of the region. Among these projects are Doha Metro, currently underway, and the Abu […]
Until now the lowest growth rates were measured in the early 1980s. In the mid 1990s, too, growth was relatively low. These periods of low population growth coincided with periods of economic recession. Conversely, the relatively high growth rates around 1990 and 2000 were measured in times of strong economic growth.. This effect is mainly the result of increasing immigration in times of economic growth, and lower immigration rates when the economic climate deteriorates. For emigration this is the other way around: fewer people leave the country when the economy is doing well, and more people emigrate when it becomes more unfavourable.. ...
The endocrine system controls and coordinates behavioral, biochemical, and physiological processes through signal mechanisms using neuropeptides or products of neurosecretory cells specialized in this system. Among invertebrates, this system has been mostly studied in coelenterates, nematodes, mollusks, annelids, crustaceans, insects, echinoderms, and tunicates (Wigham et al. 1975, Terakado et al. 1997, Pinder et al. 1999, Wheeler 2003, Wilhem 2006, Hutchinson 2007). In rotifers, there is evidence that estrogens and androgens affect significantly sexual reproduction. Among the hormones tested for its effects on population growth in rotifers are: gama-aminobutiric acid, growth hormone, human chorionic gonadotropic hormone, estradiol, triiodothyronine, 20-hydroxyecdisone, 5- hydroxytryptamine, and juvenile hormone (Gallardo et al. 1997, 2000, Preston et al. 2000).. The catecholaminergic and cholinergic system of several rotifer species has been studied by several authors (Nogrady & Alai 1983, ...
The Australian fur seal (Arctocephalus pusillus doriferus) population has displayed a relatively slow rate of recovery since being hunted by commercial sealers during the early 19th century. Despite this, population abundance doubled in the past 2 - 3 decades, indicating that the population growth rate has recently increased. Yet, the factors influencing the populations dynamics are poorly understood, primarily because basic demographic rates are unknown. Female age, survival, fecundity, breeding and physiology were studied at Kanowna Island, Bass Strait, Australia, between 2003 - 2006 by conducting censuses and captures (n = 294). Mark-recapture estimates of pup production were used to validate direct pup counts, allowing a 9-year dataset to be used for calculation of the population growth rate (2.2% p.a.) and investigation of environmental influences on reproductive success. Annual pup production (x = 3108) was synchronous, with 90% of births occurring within 28 days of the median birth date ...
The population of Malta in 2003 was estimated by the United Nations at 394,000, which placed it as number 165 in population among the 193 nations of the world. In that year approximately 12% of the population was over 65 years of age, with another 20% of the population under 15 years of age. There were 98 males for every 100 females in the country in 2003. According to the UN, the annual population growth rate for 2000-2005 is0.42%, with the projected population for the year 2015 at 411,000. The population density in 2002 was 1,188 per sq km (3,076 per sq mi), which makes it one of the most densely populated country in the world. It was estimated by the Population Reference Bureau that 91% of the population lived in urban areas in 2001. Valletta, the capital and chief port, had a population of 102,000 in that year. Other major cities include Birkirkara (21,770), Qormi (19,525), and Sliema (13,541). According to the United Nations, the urban population growth rate for 2000-2005 was 0.7%. ...
Downloadable! We provide evidence that lower fertility can simultaneously increase income per capita and lower carbon emissions, eliminating a trade-off central to most policies aimed at slowing global climate change. We estimate the effect of lower fertility on carbon emissions accounting for the fact that changes in fertility patterns affect carbon emissions through three channels: total population, the age structure of the population, and economic output. Our analysis proceeds in two steps. First, we estimate a version of the STIRPAT equation on an unbalanced yearly panel of cross-country data from 1950-2010. We demonstrate that the coefficient on population is nearly seven times larger than the coefficient on income per capita and that this difference is statistically significant. Thus, regression results imply that 1% slower population growth could be accompanied by an increase in income per capita of nearly 7% while still lowering carbon emissions. In the second part of our analysis, we use a