Ecologists population dynamics. Medical search. Frequent questions

Having taken some courses in zoology and ecology at Michigan, his interests and studies changed after taking a course about freshwater invertebrates taught by ecologist Frederick E. Smith. (wikipedia.org)
Paine's research helped popularise field manipulation experiments, sometimes called "kick-it-and-see ecology", at a time when field ecologists tended only to observe natural ecosystems. (wikipedia.org)
Through such work, the author argues, ecologists can develop general laws of population dynamics that will help turn ecology into a truly quantitative and predictive science. (princeton.edu)
This book is a true landmark in the study of population ecology. (princeton.edu)
Peter Turchin writes with admirable clarity and authority, always retaining a focus on issues that really matter for population ecology. (princeton.edu)
His research primarily focuses on population dynamics, community ecology, and species interactions, with most projects focused on aquatic ecosystems. (serdp-estcp.org)
I am an ecologist with knowledge in physiological ecology of invertebrates and plants as well as in environmental biophysics. (univ-tours.fr)
Our collaborative research team has studied blue whales in the STB since 2013 to document the population, understand their ecology and habitat use, and inform conservation management. (oregonstate.edu)
Specifically, she often works on species distributions, landscape connectivity, population and metapopulation dynamics, carnivore ecology and behavior, applied conservation science and citizen/community science. (udayton.edu)
They go on to relate laboratory work to studies of animals in the wild and to develop a general framework for relating the life history and ecology of a species to its population dynamics. (princeton.edu)
Mueller and Joshi present an incredibly thorough and broad review of what is currently understood in the population ecology of single species, and their book will be on the reading list of most ecology graduate students. (princeton.edu)
Anthony Sinclair is an ecologist and leading authority on the ecology, population dynamics and community structures of large mammals. (royalsociety.org)
Said UC Davis professor Elizabeth Crone of the Department of Evolution and Ecology: "Monarchs may behave similarly in spring, but the spring population is probably much smaller than the fall one, so they are less likely to happen across your garden. (ucanr.edu)
Understanding why population sizes of plants and animals rise and fall is a fundamental problem in ecology, and underpins our ability to predict environmental impacts, and to manage threatened, harvested and pest species. (findaphd.com)
This uncritical economic creed has colonized other disciplines, including ecology, as ecologists increasingly rely on economistic logic to rationalize the protection of ecosystems. (greattransition.org)

Understanding how processes of growth, birth, and death influence species population size is key to managing populations of conservation concern. (harvard.edu)
I am a marine ecologist with primary research interests in species behavior, interactions and habitat use. (fsu.edu)
My research program involves the development and use mathematical models to understand how species interactions and variation in species traits (due to evolution or phenotypic plasticity) affect the dynamics of predator-prey, host-pathogen, and other communities. (fsu.edu)
Much of my research focuses on exploited, imperiled, or poorly studied elasmobranch species and is often directed towards answering questions necessary for sustainable management and conservation of their populations. (fsu.edu)
Why do population outbreaks in particular species happen more or less regularly in certain locations, but only irregularly (or never at all) in other locations? (princeton.edu)
Will recent advances in the understanding of parasite population biology allow us to predict threats to endangered species and communities? (nih.gov)
He works on how trophic interactions, climate, and fishing combine to affect dynamics of populations and communities, especially species like sea urchins, kelp, abalone, and forage fish. (berkeley.edu)
However, the effects of phenological shifts were much smaller than the effects of longstanding drivers of butterfly population viability, such as land management and invasive species. (serdp-estcp.org)
His work includes studies of mangrove and coral reef ecosystems, efficacy of marine protected areas, and population dynamics of fishery species ranging from traditional Caribbean fishery species like Nassau grouper and Caribbean spiny lobster to emerging fisheries like sea cucumbers, parrotfish, sponges and gorgonians. (caribbeanhotelandtourism.com)
My general aim is to characterize the microclimate of interacting species to estimate its impact on biotic interactions and population dynamics. (univ-tours.fr)
Thus, it is critical to understand how - not just if - environmental change impacts the availability and quality of key prey species in ocean food webs, and how these changes will impact marine predator health and population resilience. (oregonstate.edu)
Integrate these components to develop novel Species Health Models to predict predator and prey whale population response to rapid environmental change. (oregonstate.edu)
Dr. Gantchoff is a wildlife ecologist and conservation scientist focusing mostly on terrestrial wildlife species. (udayton.edu)
Punta de la Banya has been a key breeding site to study the metapopulation dynamics of the species throughout the western Mediterranean, which includes 90% of the world's population of the species. (csic.es)
The sections that follow explain how ecologists classify Earth's various ecosystems and how they describe the interactions between the planet's many species. (schoolbag.info)
In studying communities of species, ecologists have been publishing descriptions of food webs for nearly 80 years without much notion of whether. (nih.gov)
In another part of their minds, ecologists have also been thinking about niches,.or-how species. (nih.gov)
Increasingly, the collections are also used to extract DNA and thus enable studies of species' relationships, distribution history and population genetics, or to investigate the expression, variation or change of different genes over time. (lu.se)

I typically use some combination of field and laboratory experiments, population and quantitative genetics approaches, and mathematical modeling. (fsu.edu)
By bringing together mathematical models, statistical analyses, and field experiments, this book offers a comprehensive new synthesis of the theory of population oscillations. (princeton.edu)
She is a population ecologist whose work combines statistical and mathematical approaches with field work to understand dynamics of plant and insect populations. (serdp-estcp.org)
The mathematical model developed by Prof. Lluís Alsedà and Dr. Josep Sardanyés of the Center de Recerca Matemàtica (CRM) in collaboration with the scientific team of CEAB-CSIC and Prof. Alan Hastings of the University of California Davis has allowed to reproduce the dynamics of the escape and dispersal of the Audouin's Gull population at Punta de la Banya (Banya Cape) in Delta de l'Ebre. (csic.es)
Prof. Luis Alsedà and Dr. Josep Sardanyés, together with Prof. Daniel Oro, have developed a mathematical model to describe the dynamics of the gull population. (csic.es)
The mathematical model has allowed to estimate the carrying capacity of the Punta de la Banya ecosystem (how good is the study site to host the bird population due to food availability, environmental conditions, and space) as well as the expected population equilibrium. (csic.es)
With the arrival of predators some gulls began to disperse before reaching the population equilibrium predicted by the mathematical model. (csic.es)
a set of mathematical tools designed to describe populations and investigate how they change. (openstax.org)
Symbolic dynamics is a mathematical framework that allows us to analyze and describe the behavior of chaotic systems. (yimho.com)
Dr. Klein is a mathematical ecologist and epidemiologist whose research focuses on the role of behavior in the spread of infectious diseases. (nih.gov)
Mathematical ecologists have created a mathematical model to analyze population dynamics of the northern spotted owl by dividing the female owl population into three categories: juvenile (up to 1 year old), subadult (1 to 2 years), and adult (over 2 years old). (solvedlib.com)

Dr. Dahlgren is a marine ecologist who studies a wide range of topics related to tropical marine ecosystems. (caribbeanhotelandtourism.com)

Fletcher, Senior Ecologist, communication to P. Machin. (candobetter.net)

He has worked on two projects funded by SERDP, one as a graduate student and one as co-PI, with aims of understanding metapopulation dynamics and effects of phenological shifts in salamanders of conservation concern. (serdp-estcp.org)
His current research interests are in life-history evolution, the evolution of ecological specialization, the evolutionary genetics of circadian organization, and small population and metapopulation dynamics. (princeton.edu)

Although life histories describe the way many characteristics of a population (such as their age structure) change over time in a general way, population ecologists make use of a variety of methods to model population dynamics mathematically. (openstax.org)

Will Climate-Mediated Phenological Shifts Affect Population Viability? (serdp-estcp.org)
ENGLISH ABSTRACT: Climate change and human population growth has put pressure on protected areas and wilderness in southern Africa, consequently limiting food availability for herbivores. (sun.ac.za)
2018) identified genomic variation associated with climate across the breeding range of this migratory songbird, and concluded that populations requiring the greatest shifts in allele frequencies to keep pace with future climate change have experienced the largest population declines, suggesting that failure to adapt may have already negatively affected population abundance. (ubc.ca)
The third assumption is that, if there is a correlation between the genetic measures and the climate or vegetation indices, one can identify the precise 'genomic vulnerability' of the local population. (ubc.ca)
Populations requiring the greatest shifts in allele frequencies to keep pace with future climate change have experienced the largest population declines, suggesting that failure to adapt may have already negatively affected populations. (ubc.ca)
Africa may already be feeling the effects of global warming, says Isaac Held, a senior research scientist at the National Oceanic and Atmospheric Administration (NOAA) Geophysical Fluid Dynamics Laboratory, and more marked effects are likely to come, according to models developed by climate scientists around the world. (nih.gov)
Key workshop topics included how advances in environmental exposure assessments can be applied to identify, predict, and monitor critical infectious disease exposure pathways, and how climate and environmental modeling techniques can be applied to better understand the biology and transmission dynamics of pathogens and provide early warning of emerging threats. (nih.gov)

This book gives an excellent introduction to our maturing understanding of how ideas about nonlinear dynamical systems can shed light on the complex behavior of real populations. (princeton.edu)
It gives us a method to translate complicated dynamics into a more straightforward, symbolic form, which helps us understand the underlying structures and patterns that control chaotic behavior. (yimho.com)
We assessed the influence of rock cavities, or pits, on the growth dynamics and behavior of the purple sea urchin, Strongylocentrotus purpuratus . (silverchair.com)
We conclude that microhabitat is an important factor in controlling the behavior and growth dynamics of the bioeroding sea urchin S. purpuratus . (silverchair.com)
Given what we learned in the previous two chapters about the behavior of populations with time lags, with high reproductive potentials, or under the influence of demographic and environmental stochasticity, it is not realistic to expect a population to show a simple attraction to a specific number called the carrying capacity. (sirichaishop.com)

Little is known, however, on the impact of such heterogeneous conditions on the population dynamics of organisms and biotic interactions, two key components in community structure and ecosystem functioning. (univ-tours.fr)
interested in (deterministic and/or stochastic) models for population dynamics and interactions. (sbmac.org.br)
Density can have effects on interactions within a population such as competition for food and the ability of individuals to find a mate. (openstax.org)
NIGMS is interested in EEID applications that address the evolution of hosts, pathogens and their interactions as well as basic biology and population genetics of hosts and pathogens as they relate to disease transmission and prevention. (nih.gov)
Social interactions, through influence on behavioural processes, can play an important role in populations' resilience (i.e. ability to cope with perturbations). (bvsalud.org)
Scientists who work in this branch are called ecologists, and they look at the interactions between living things and their environment on many different scales, from large to small. (schoolbag.info)
The results we have found include a causal and mechanistic link between mutualistic interactions that positively affect population size which in turn promote evaluability and trait evolution. (lu.se)

and (iii) evolutionary dynamics models, which simulate the variation and evolution of adaptive traits by explicitly accounting for selection, mutation, gene flow and inheritance rules. (dialectical-ecologist.fr)
I am an Evolutionary Ecologist interested in how the structure of individuals, populations and communities interacts with environmental change to shape ecological and evolutionary dynamics. (southampton.ac.uk)
We are looking for curious and creative students who can demonstrate a strong motivation to understand ecological and evolutionary dynamics, and who have a strong quantitative focus and a desire to work in a supportive and engaging team environment. (findaphd.com)

The team has been able to demonstrate that by modeling different dispersion terms and applying AI methods such as genetic algorithms, that population dispersal after disturbance responds to the phenomenon of social copying. (csic.es)
We then discuss the causes for dispersal, and finally methods of modeling rates of dispersal of populations. (sirichaishop.com)

My research combines ecological and evolutionary principles to study the population biology of coastal marine invertebrates (such as corals, bryozoans, and gastropods). (fsu.edu)
I am an ecologist interested in several aspects of the biology of organisms. (univ-tours.fr)
This] book is a good introduction to one aspect of recent advances in population biology, and provides the rationale for further studies of laboratory systems. (princeton.edu)
Joel E. Cohen's Contributions to the Advancement of Science Ernst Mayr, the eminent student of evolution, wrote in 1963: "The replacement of typological thinking by population thinking is perhaps the greatest conceptual revolution that has taken place in biology. (nih.gov)

I am interested in how ecological, evolutionary, and epidemiological processes interact to drive population-level dynamics. (fsu.edu)
The work in the Weitz group is primarily theoretical in nature, and utilizes the tools of nonlinear dynamics, stochastic processes, and large-scale data analysis to interact with experimentalists. (igem.org)
My research aims to advance our understanding of ecological processes, while confronting applied problems with ecological hypotheses and to elucidate processes driving complex population dynamics and inform wildlife management. (sdstate.edu)
Our research thus improves our general understanding of ecological and evolutionary mechanisms that underpin the eco-evolutionary processes that drive ecosystem dynamics including population sizes, traits evolution and diversification. (lu.se)

2018) compared the genomic vulnerability data to the population changes reported for each site. (ubc.ca)
2018) Figure 2 we get the prediction of a very high genomic vulnerability (above 0.06, approximate red dot in Figure 1 above) for the Great Basin, and thus a strongly declining population trend. (ubc.ca)

Meggan is an an infectious disease ecologist. (fourwaves.com)
The broad aim of her research program is to understand infectious disease dynamics in animal and human populations. (fourwaves.com)

Public health officials, veterinarians, and wildlife ecologists increasingly are focusing on mitigation strategies to decrease the potential for human disease in such landscapes ( 2 ). (cdc.gov)
Planned wildlife corridors need to be made safe and long-term viable to cope with people, car and kangaroo population movements. (candobetter.net)
Northern Spotted Owl Population In an attempt to save the endangered northern spotted owl, the U.S. Fish and Wildlife Service imposed strict guidelines for the use of 12 million acres of Pacific Northwest forest. (solvedlib.com)

In the process, they describe experimental studies on model systems that address the effects of age-structure, inbreeding, resource levels, and population structure on the stability and persistence of populations. (princeton.edu)
This book is the first that I have seen which attempts to describe how the theory of population stability can be tested using controlled experiments. (princeton.edu)
These more precise models can then be used to accurately describe changes occurring in a population and better predict future changes. (openstax.org)

In human-dominated landscapes, the transmission dynamics of diseases often change as host and pathogen population dynamics respond to loss or creation of habitat ( 1 ). (cdc.gov)
This joint National Institutes of Health (NIH) - National Science Foundation (NSF) initiative supports research on the ecological, evolutionary, organismal, and social drivers that influence the transmission dynamics of infectious diseases. (nih.gov)
The central theme of submitted EEID projects must be quantitative or computational understanding of pathogen transmission dynamics. (nih.gov)
We sought to establish the scale of mortality occurring in Sandwich terns breeding in the Netherlands in 2022, characterize the associated HPAI H5N1 viruses and pathology, report on the carcass removal effort relative to survival, and investigate intracolony transmission dynamics. (cdc.gov)

Peter Turchin first reviews the conceptual tools that ecologists use to investigate population oscillations, introducing population modeling and the statistical analysis of time series data. (princeton.edu)

An arid-land plant ecologist, her research focuses on the population dynamics of rangeland shrubs and trees, particularly their responses to grazing by introduced herbivores. (sa.gov.au)

Complex population dynamics have fascinated biologists for decades. (princeton.edu)
Complex Population Dynamics integrates theoretical and empirical studies into a major new synthesis of current knowledge about population dynamics. (princeton.edu)

By recording the numbers of individualsin children's play groups every 30 seconds, Cohen was the first to observe the dynamics (trajectory in time) of systems of casual social groups, and the first to test in detail the dynamic assumptions of stochastic models for systems of social groups. (nih.gov)

I especially recommend the book's first two parts to anyone interested in how to model and analyze population fluctuations. (princeton.edu)

He is particularly interested in the areas of predator sensitive foraging, predator-prey theory, migration and the regulation of populations. (royalsociety.org)

Thus, B (birth rate) = bN (the per capita birth rate " b " multiplied by the number of individuals " N ") and D (death rate) = dN (the per capita death rate "d" multiplied by the number of individuals " N "). Additionally, ecologists are interested in the population at a particular point in time, an infinitely small time interval. (openstax.org)

During the initial phase, from 1981 to 1997, the gulls found such good breeding conditions and the population growth was exponential, thanks to very high fertility and immigration rates never recorded before, and the colony contained up to 73% of the population, something absolutely unheard of. (csic.es)
The ACT Roo Management model is one of high fertility sedentary populations that rarely migrate, grazing grasslands down to the subsoil. (candobetter.net)

Further, individual tumors are composed of heterogeneous cell populations, not all cells being equal in their ability to respond to treatment or to repopulate a tumor. (stanford.edu)

It is unique in that it gives both a comprehensive survey of the theory of population growth dynamics and also the application of the theory to experimental populations. (princeton.edu)
Using field data collected by the CEAB-CSIC scientific team, they were able to study the initial exponential growth of the population and find the most relevant ecological parameters accountable for the dynamics observed in Punta de la Banya, estimating the rates of reproduction, immigration, and competition (for food and/or nesting areas) between members of the same population. (csic.es)
1 Population growth has slowed significantly in recent decades, but both economic growth through market expansion and its attendant environmental destruction have only continued. (greattransition.org)
Video and text of Sheila Newman's speech at the Animal Justice Party's event, "Policy basis for Kangaroo treatment in the ACT," 5 April 2016: Harvesting, damage mitigation and culling probably actually accelerate population growth in roos because the smaller ones survive and adapt by sexually maturing earlier - which speeds up fertility turnover. (candobetter.net)
Canberra is pursuing a policy of rapid population growth, mostly through invited economic immigration. (candobetter.net)
Predicting a population growth of at least 98 per cent within 50 years, ACT population projections for 2061 suggest that the Australian Capital Territory population could exceed Tasmania's population by 2038. (candobetter.net)
ACT Kangaroo Management Policy works on a model that all creatures maximize their population growth and that Canberra's roos are riding an expansive curve which can only be capped by massive frequent culls. (candobetter.net)
Malthus published a book in 1798 stating that populations with unlimited natural resources grow very rapidly, and then population growth decreases as resources become depleted. (openstax.org)
When the population size, N , is plotted over time, a J-shaped growth curve is produced ( Figure 45.9 ). (openstax.org)
Therefore, when calculating the growth rate of a population, the death rate ( D ) (number organisms that die during a particular time interval) is subtracted from the birth rate ( B ) (number organisms that are born during that interval). (openstax.org)
These achievements are important mathematics, They also illuminate otherwise puzzling phenomena in the age structure and growth of populations with variable vital rates. (nih.gov)

Thus, scientists usually study populations by sampling a representative portion of each habitat and use this sample to make inferences about the population as a whole. (openstax.org)
It also covers how scientists study groups of organisms to stay on top of how their populations are growing (or declining). (schoolbag.info)

This close connection explains why experts from across CDC are working closely with physicians, veterinarians, ecologists, and many others-ranging from pet owners, to laboratorians, to agricultural officials-to protect health for all living beings. (cdc.gov)

Dr. Joshua Weitz is a quantitative biologist interested in the structure and dynamics of complex biological systems. (igem.org)

Our estimate is that the population increases 2-3x each generation (so it's about 100-200x larger in Fall than Spring), then resets each year due to mortality during Fall migration and overwintering. (ucanr.edu)
It is too in-depth to cover here, but in short, killing young deer amounts to what ecologists have called "compensatory mortality" and is a natural part of maintaining healthy deer population dynamics. (truthaboutfur.com)

This project will combine theory, lab and field experiments, molecular tools, and statistical analyses, to understand when and how rapid evolution affects the dynamics of plants and animals in an era of global environmental change. (findaphd.com)

By conducting long-term research on large mammals in the Mara-Serengeti ecosystem and elsewhere in East Africa, Anthony showed the ways in which different animal populations are regulated. (royalsociety.org)
40 years of observations of the Audouin's Gull ( Ichthyaetus audouinii ) population by Dr. Meritxell Genovart and Dr. Daniel Oro of the Centre d'Estudis Avançats de Blanes (CEAB-CSIC) have made possible to model, for the first time, a collapse of a population with dispersion by social copying after a disturbance in the ecosystem. (csic.es)
We are also collaborating with ecologists Rick Karban and Louie Yang, both professors at UC Davis who have an interest in cicada population dynamics and nutrient cycling in the ecosystem. (okinawaclimbing.com)

This method assumes that the larger the population, the lower the percentage of marked organisms that will be recaptured since they will have mixed with more unmarked individuals. (openstax.org)

It is unknown whether these monarchs are effectively lost from the migratory population, or whether they or their offspring (the caterpillars in your yard) will continue on to the overwintering sites. (ucanr.edu)

In this book, Laurence Mueller and Amitabh Joshi examine current theories of population stability and show how recent laboratory research on model populations - particularly blowflies, Tribolium, and Drosophila - contributes to our understanding of population dynamics and the evolution of stability. (princeton.edu)
They then show how rigorous empirical research can reveal both the proximal causes of stability (how populations are regulated and maintained at an equilibrium, including the relative roles of biotic and abiotic factors) and its ultimate, mostly evolutionary causes. (princeton.edu)
It makes a large contribution to the field and will be of great use to everyone who does research in population dynamics, no matter their individual approach or study system. (princeton.edu)
In her research, Dr. Pardini studies population dynamics of rare plants and coastal dune restoration. (wustl.edu)
I wish I knew," commented UC Davis distinguished professor emeritus Art Shapiro , who has monitored the butterfly populations of Central California since 1972 and maintains a research website, Art's Butterfly World . (ucanr.edu)
Our international team of ecologists and evolutionary biologists based at prestigious universities in the USA, Canada, Japan, and Australia has multiple fully-funded (including both salary and research funds) PhD projects exploring how rapid evolution influences ecological dynamics and stability in an era of global environmental change. (findaphd.com)
Successful candidates will join a young team of ecologists and evolutionary biologists to work on a funded Australian Research Council Discovery Project "How does rapid evolution affect the dynamics and stability of ecological communities? (findaphd.com)

I am particularly interested in the drivers of community structure and habitat use patterns as well as population dynamics and life history variability. (fsu.edu)
Furthermore, raccoon core habitat within suburban environments is fragmented with raccoon populations concentrated in preserves interspersed among residential areas ( 8 ). (cdc.gov)

Temporal and spatial variation in assortative mating: an example in Blue Tit Mediterranean populations. (cnrs.fr)

This month, Harvard Forest hosted a three-day training workshop for landscape ecologists interested in learning how to use the LANDIS-II forest simulation model. (harvard.edu)

By studying how plants interact - one-on-one, as a population, and in their communities - ecologists can figure out how to conserve our photosynthetic friends. (kcts9.org)
Eco-evolutionary models of spatiotemporal dynamics of plant-pollinator communities. (lu.se)

Robert Treat "Bob" Paine III (April 13, 1933 - June 13, 2016) was an American ecologist who spent most of his career at the University of Washington. (wikipedia.org)

I think this is probably because some are stopping to lay eggs on the return migration, and the fall population is much larger than the spring migration population. (ucanr.edu)
Natural resource managers and ecologists often desire an understanding of spatial dynamics such as migration, dispersion, and meta-population dynamics. (geneconvenevi.org)

Ed Yong wrote that "by encouraging independence and prizing fieldwork, Paine mentored an entire generation of superstar ecologists. (wikipedia.org)

We show that these integrative models allow a better understanding of how different functional traits influence demographic rates (the phenotype-demography map), how the variation in demographic rates influences fitness (the demography-fitness map) and how individual variations of fitness may in turn influence the genetic composition of a population. (dialectical-ecologist.fr)
Turchin has done an outstanding job and produced a significant milestone in our understanding of population dynamics. (princeton.edu)

Never before has a lucid synthesis of the basic principles and models of population dynamics been so effectively merged with insightful analyses of some of the best data for populations of insects, birds and mammals. (princeton.edu)
Figure 19.2 Australian mammals show a typical inverse relationship between population density and body size. (openstax.org)

Many of these tools were actually designed to study human populations. (openstax.org)
In fact, while the term "demographics" is sometimes assumed to mean a study of human populations, all living populations can be studied using this approach. (openstax.org)
The global human population increased from approximately 1 billion in the year 1800 to 7 billion in 2011. (greattransition.org)
What changes with time is increased human development constantly shrinking the patch size of cicada populations. (okinawaclimbing.com)
For epidemic theory, the models replace the assumption of homogeneous mixing of individuals by a more realistic description:-~ In demography, Cohen has proposed and studied in depth a new class of models for populations, such as human populations, in which individuals are categorized by age, Cohen's models are special cases of a model for products. (nih.gov)

The social dynamics of plants are as complex as those at any high school. (kcts9.org)
For example, factors such as temperature, precipitation, land use, and social dynamics can affect the likelihood that people will be exposed to infectious agents, while exposure to pollutants may affect the severity of the disease in those who become infected. (nih.gov)

Throughout the twentieth century, biologists investigated the mechanisms that stabilize biological populations, populations which - if unchecked by such agencies as competition and predation - should grow geometrically. (princeton.edu)

Field results indicate that salamander populations exhibit a wide range of phenological variation in the timing of breeding and metamorphosis, though precision in identification of climatic drivers varied among our focal specific taxa. (serdp-estcp.org)
Population size can affect potential for adaptation because it affects the amount of genetic variation present in the population. (openstax.org)
Cohen has proved a new class of ergodic theorems for populations in which birth and death rates contain some random variation over time. (nih.gov)

She cites the example of the 2002 drought-triggered famine in southern Africa, which affected millions due partly to populations' coping capacity being weakened by HIV/AIDS. (nih.gov)

The potential practical significance of this work is that Cohen's models may provide improved means of preparing population projections for developed countries like the United States. (nih.gov)

All people working in the field will use it, and professors will use it in courses on population dynamics. (princeton.edu)
He is a statistician, modeler, and field ecologist. (berkeley.edu)

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