Size population dynamics. Medical search. Frequent questions

Protecting vital territories enables us to conserve not only falcon populations but also other species sharing their ecosystem. (topfalconry.com)
The growth rates of colonies of both species were rapid but declined with increased size. (ub.edu)
The course provides an introduction to basic concepts used in analyses of single-species population dynamics. (ntnu.edu)
Subjects covered include demography, population regulation and life history strategies in different animal and plant species. (ntnu.edu)
The distribution and dynamics of aquatic invasive species and the application of this knowledge to their control (my current position). (usgs.gov)
To justify and defend lethal or reproductive control programs to solve vertebrate pest problems, wildlife biologists must have a sound understanding of the population status and dynamics of the problem species. (escholarship.org)
PM4 simulates population changes for a species at weekly intervals over an annual cycle, exploring the immediate (≤1 year) impact of population management actions. (escholarship.org)
Population simulations using PM1 and PM2 demonstrated that for most vertebrate pest species considered, lethal control will be more efficient than reproductive control in reducing population levels. (escholarship.org)
Understanding the population dynamics of wildlife species is the cornerstone to successful management, and population models will be essential for this task in the years to come. (escholarship.org)
I study size-dependent interactions within and between fish species and effects of fishing and climate change on population dynamics and ecological processes. (umu.se)
My general research focus on size dependent predatory and competitive interactions within and between fish species and how these, together with abiotic factors, affect the size structure, density, production and dynamics of fish populations and fish communities. (umu.se)
Because cormorants are not typically preyed upon by other species, their populations are regulated primarily by these factors rather than by predation. (fws.gov)
The environmental conditions in this upwelling region may have induced this population of A. spinimanus to show different characteristics and behaviors from other populations on the Brazilian coast, since alterations linked to the periods of reproduction and recruitment, as well as the population structure and distribution, may reveal different survival strategies of the species. (scielo.br)
In 2011, due to the combined threats of harvest and sea ice loss, the USFWS determined that listing of the population as threatened under the Endangered Species Act was warranted but was precluded by higher priorities. (enn.com)
One method for determining population size and connectivity of marine species is through the examination of their genetics. (umaine.edu)
Further, diseases may provide selective pressures that shape the genetic diversity of populations or species. (nih.gov)
As changes in forest landscapes continue, landscape effects may become increasingly important drivers of population dynamics for forest bird species. (confex.com)
We used metapopulation theory as an interpretative framework to evaluate the characteristics of population dynamics and factors associated with local extinction and colonization for 22 wood warbler species over a 20 year time period. (confex.com)
Characterize long-term population dynamics in managed forests for 22 warbler species 2. (confex.com)
Assess the relationship of species life history and ecological traits as explanations for the observed occupancy dynamics. (confex.com)
Results of this study show long-term dynamics of 22 warbler species at large spatial scales were associated with species' population density and habitat specialization. (confex.com)
Landscape effects of mean patch size and total edge, as well as scale, on local extinction and colonization dynamics were species specific. (confex.com)
Total edge was negatively associated with the probability of local extinction for nine species and mean patch size negatively affected local extinction probability for three species but the scale for the best models varied by species. (confex.com)
Mean patch size was a significant predictor of colonization probabilities for five species. (confex.com)
Identifying mechanisms of species population dynamics at large scales is critical for understanding the ecology of these species, their population trends, and their conservation. (confex.com)
We analyze population and strategy (= heritable phenotype) dynamics of the two populations under clade initiation (when species are introduced into a. (lu.se)
We analyze population and strategy (= heritable phenotype) dynamics of the two populations under clade initiation (when species are introduced into a population), evolutionary tracking (constant, small changes in the environment), adaptive radiation (availability of multiple ecological niches), and evolutionary rescue (extreme environmental disturbances). (lu.se)
We find that when species are far from an eco-evolutionary equilibrium, faster-evolving species reach higher population sizes, and when species are close to an equilibrium, slower-evolving species are more successful. (lu.se)
Frequent, minor environmental changes promote the extinction of species with small population sizes, regardless of their evolvability. (lu.se)
Finally, disrupting the environment at intermediate frequencies can result in coexistence with cyclical population dynamics of species with different rates of evolution. (lu.se)

In addition, the findings indicate that population growth was negatively related to density in all 12 ponds.These results support the hypothesis that in SSPs, density may have multiple and contrasting effects on demographic parameters and growth rates within local populations as well as on dispersal. (uzh.ch)
Local populations in marginal habitats close to the distribution border are expected to vary more in size than central populations. (lu.se)

More specifically, present main research approaches focus on how fish populations, fish communities and ecosystems are affected by climate change and fisheries. (umu.se)
The research on the effects of fishing focuses on how different types of fisheries and fishing mortality, size-dependent interactions between fish individuals and the variation in productivity between different habitats(and resources)affect the densities and size structure of fish populations. (umu.se)
Do double-crested cormorants negatively impact fish populations in open waters? (fws.gov)
Cormorants are just one of many factors that can affect fish populations. (fws.gov)
A limited but growing body of research has shown that cormorants can take numbers of sport fish significant enough to have a negative impact on catch rates and in some cases, management can reduce those impacts and benefit fish populations. (fws.gov)

The estimated population size is about 2,000 birds and their breeding distribution is subdivided into several local areas, in each of which they may be at risk of local extinction. (bioone.org)
Averaged population growth rate under the stochastic model was λ = 1.1, and the risk of extinction defined as the proportion of trials in which population size ≤ 1 within 30 years was ≤ 8.9%, even when the starting population was small (15 birds). (bioone.org)
Does noisy environment facilitate extinction, or stabilize the population? (tue.nl)
Conservation biologists want to understand both types because this helps them manage populations and prevent extinction or overpopulation. (lumenlearning.com)
This approach allowed us to assess the complex spatio-temporal dynamics of warbler populations by directly addressing the underlying processes of local extinction and colonization. (confex.com)
Determine the influence of patch size and edge at multiple spatial scales on probability of local extinction, 3. (confex.com)

Understanding the factors that determine territory size is essential for effective conservation management strategies. (topfalconry.com)
Understanding these requirements is essential for conservation efforts and maintaining healthy falcon populations. (topfalconry.com)
Routine censusing to monitor changes is important for understanding both population dynamics and the effectiveness of conservation strategies. (stir.ac.uk)
We discuss conservation strategies that are likely to have contributed to an increase in the gorilla population during this time of turmoil. (stir.ac.uk)
Understanding the mechanisms that regulate the dynamics of spatially structured populations (SSP) is a critical challenge for ecologists and conservation managers. (uzh.ch)
Infectious diseases are increasingly recognized as an important force driving population dynamics, conservation biology, and natural selection in wildlife populations. (nih.gov)
This reflects the importance of large conservation areas for large carnivores, as leopard populations are generally declining across their range. (sciencedaily.com)
The research supports the use of closed zone legislation as a conservation tool with developing O. edulis populations. (alr-journal.org)

Building upon our understanding of the territory requirements for falcons, let us delve further into the factors that influence their territory size. (topfalconry.com)
The aim of the course is to give the students an in-depth understanding of general principles in population dynamics with emphasis on how they can be applied in practice to analyse different kinds of data. (ntnu.edu)
However, additional research in this area is needed to improve our understanding of the relationship between cormorants and their prey populations. (fws.gov)
Thus, understanding disease dynamics and selective pressures from pathogens is crucial to understanding population processes, managing wildlife diseases, and conserving biological diversity. (nih.gov)
Understanding genotype-specific epidemiology will improve predictive models and inform management strategies for CWD-affected cervid populations. (nih.gov)
Understanding how carnivore populations are faring and what factors contribute to their success is essential to conserving them and the other wildlife in their ecosystem, Allen said. (sciencedaily.com)
The project conducts a variety of research and monitoring programs designed to enhance our understanding of lobster population dynamics and life history traits. (mass.gov)
These factors are also important to understanding how a specific population will grow. (lumenlearning.com)
Most studies have been performed on large cell populations, but detailed understanding of cell dynamics and heterogeneity requires single-cell analysis. (frontiersin.org)
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)
Pre-clinical cancer trials aim at understanding the dynamics of tumor growth and evaluate the e ffect of treatments such as radio- and chemotherapies in delaying this. (lu.se)

7-MS-LS2-2 - Ecosystems--Interactions, Energy, and Dynamics - competition/predation/parasitism/etc. (massaudubon.org)
Similarly, the numbers of successful clutches in our two populations with low predation rate were positively related to the same index. (lu.se)

Simplified population models usually start with four key variables (four demographic processes) including death, birth, immigration, and emigration. (wikipedia.org)
Internal population processes such as births and deaths occur at a local level, while external processes such as dispersal take place at an inter‐population level. (uzh.ch)
In this study, we examine how density is related to demographic processes at both the pond level (survival and population growth) and the SSP level (between‐pond dispersal) in a pond‐breeding amphibian, the great crested newt (Triturus cristatus). (uzh.ch)
Given staging habitats being lost in many parts of the world, our goal is to investigate responses of individual migration tactics and population dynamics in the face of loss of staging habitat, and to identify the key processes connecting them. (datadryad.org)
Some very robust correlations between galaxy structural properties, such as total luminosity, maximum circular velocity, and size display rather small scatter, hinting at well-regulated galaxy formation processes. (utoronto.ca)
The "slow" processes of individual allocation and growth, population dynamics and disturbance are implemented once each simulation year (Figure 1). (lu.se)

Population dynamics is the type of mathematics used to model and study the size and age composition of populations as dynamical systems. (wikipedia.org)

fertility and mortality, and age-composition of population. (azpdf.net)
A Bayesian size-based stock assessment model was used to estimate blue catfish abundance, fishing mortality, and size structure over time (2001-2016) in the tidal James River. (usgs.gov)
The differences in disease infection and mortality rates allowed genetically resistant deer to achieve higher population growth and obtain a long-term fitness advantage, which translated into a selection coefficient of over 1% favoring the CWD-resistant genotype. (nih.gov)
These are grouped into density-dependent factors, in which the density of the population at a given time affects growth rate and mortality, and density-independent factors, which influence mortality in a population regardless of population density. (lumenlearning.com)
Usually, the denser a population is, the greater its mortality rate. (lumenlearning.com)
Many factors, typically physical or chemical in nature (abiotic), influence the mortality of a population regardless of its density, including weather, natural disasters, and pollution. (lumenlearning.com)
This raises the question how the implies that some populations produce more flycatcher populations in these marginal habitats recruits than needed to cover mortality and popu- behave during a period of population decline. (lu.se)

At a patch scale, demographic traits (e.g., survival, breeding success) and the population growth rate can be influenced by density either negatively (e.g., competition effect) or positively (e.g. (uzh.ch)

Abstract This study investigated the temporal abundance, periods of reproduction and recruitment, gonad sexual maturity, and population structure of the swimming crab Achelous spinimanus (Latreille, 1819) in Macaé, a region of the Brazilian coast affected by upwelling events. (scielo.br)
abstract = "Evolvability is the capacity of a population to generate heritable variation that can be acted upon by natural selection. (lu.se)

We also estimated population viability using deterministic and stochastic population models. (bioone.org)
To complement the deterministic model, we developed an individual-based stochastic population model in which each of the individuals produced a variable number of offspring and survived one year with certain probabilities that were drawn from estimated distributions of age-specific clutch size and survival rates. (bioone.org)

7-MS-LS2-4 - Ecosystems--Interactions, Energy, and Dynamics - ecosystem disruptions can shift pop. (massaudubon.org)
Large carnivores at the top of the food chain play important roles in ecosystem regulation, and disease and population control," Allen said. (sciencedaily.com)

These findings suggest that the availability of suitable nesting sites and prey abundance may influence territory size, with urban environments offering more concentrated resources for these raptors. (topfalconry.com)

This is lower than growth estimates made in several population viability analyses, but approximately 5% of the 1989 population is known to have died due to military activity over the last decade. (stir.ac.uk)
Particular emphasis will be made to how these models can be used in analyses of the consequences for population viability of different kinds of human activities such as expected changes in climate, habitat destruction and fragmentation and harvesting. (ntnu.edu)

Additionally, we will discuss how changes in habitat quality and anthropogenic impacts pose challenges to falcon populations' ability to establish successful breeding pairs within their territories. (topfalconry.com)
Our results demonstrate how environmental change that impacts one energetically costly life history stage in migratory birds can have population dynamics impacts across the entire annual cycle via phenotypic plasticity. (datadryad.org)

To assess management tradeoffs, managers need to understand the current status of the population and anticipate future population abundance and trends. (usgs.gov)
The model estimated population size increases until around 2006, with declines in total abundance after 2011 and large blue catfish (≥80 cm total length) after 2001. (usgs.gov)
In recent years, data on abundance and size structure have also been collected from the ventless lobster trap survey. (mass.gov)
Thus, despite the lack of a change in the proportion of krill in the diet, the population demographics of the krill population suggested that the abundance of krill may have fallen below the level required to support normal breeding success of penguins sometime before or during the 2000 breeding season. (nerc.ac.uk)

Geometric populations grow in discrete reproductive periods between intervals of abstinence, as opposed to populations which grow without designated periods for reproduction. (wikipedia.org)

The community-to-community heterogeneity observed in dog populations could explain the persistence of rabies in certain communities. (cdc.gov)

Additionally, populations do not usually exist in isolation. (lumenlearning.com)
Furthermore, we demonstrate that a subset of response genes identified in breast cancer are already highly expressed pre-therapy in melanoma, and additionally we establish divergent RNA dynamics between breast cancer and melanoma following CPI treatment, which may suggest distinct immune microenvironments between the two cancer types. (bvsalud.org)

Populations can rapidly respond to environmental change via adaptive phenotypic plasticity, which can also modify interactions between individuals and their environment, affecting population dynamics. (datadryad.org)

According to Malthus, assuming that the conditions (the environment) remain constant (ceteris paribus), a population will grow (or decline) exponentially. (wikipedia.org)
A simulation (PM3) of the removal of 47,000 laughing gulls (Larus atridlla) from the Long Island-New Jersey population accurately predicted the 33% decline of the population over five years. (escholarship.org)
The age structure dataâ€"collected between 1981 and 1999â€"were particularly informative, and enabled us to quantify the population decline and the birth and death rates that caused it. (enn.com)
Infectious agents have been implicated in the decline of small or endangered populations and may act to constrain population size, distribution, growth rates, or migration patterns. (nih.gov)
The human-induced changes to habitat availability and quality are accelerating the decline of large carnivores, which are already vulnerable because they have naturally low population densities at birth. (sciencedaily.com)
After an epizootic has abated, terrestrial reservoir populations decrease, and reports of rabies in animals in a given locale can decline precipitously. (cdc.gov)

All blood cells originate from a population of relatively few haematopoietic stem cells residing in the bone marrow, which give rise to specific progenitors through different lineages. (lu.se)

citation needed] The mathematical formula below can used to model geometric populations. (wikipedia.org)

At the population level, macroscopic bursting has been identified in populations of neurons that do not express intrinsic bursting mechanisms. (nih.gov)
In this article, we derive mean-field descriptions of populations of spiking neurons and examine whether states of collective bursting behavior can arise from short-term adaptation mechanisms. (nih.gov)
CONCLUSIONS: Overall, delineating longitudinal RNA dynamics following CPI therapy sheds light on the mechanisms underlying diverging response trajectories, and identifies putative targets for combination therapy. (bvsalud.org)

By investigating similar case studies and synthesizing existing research on territorial behavior, this article will delve into the ecological and behavioral factors influencing territory size among falcons. (topfalconry.com)
Examples of such problems are the minimum size of viable populations, optimal harvest strategies of renewable resources and ecological effects of expected changes in climate. (ntnu.edu)

A study of camera-trap data from Serengeti National Park in Tanzania found that leopard population densities in the 3.7-million-acre park are similar to those in other protected areas but vary between wet and dry seasons. (sciencedaily.com)
These densities suggest the leopard populations are at moderately healthy levels in the Serengeti. (sciencedaily.com)

Population dynamics overlap with another active area of research in mathematical biology: mathematical epidemiology, the study of infectious disease affecting populations. (wikipedia.org)
Our work provides a rare example of a quantifiable disease-driven selection process in a wildlife population, demonstrating the potential for infectious diseases to alter host populations. (nih.gov)

The quality of staging habitats affects individuals' migration timing and energy budgets in the course of migration, and can consequently affect individuals' breeding and overwintering performance, and impact population dynamics. (datadryad.org)
Ficedula hypoleuca population dynamics in peripheral habitats in Scandinavia. (lu.se)
The numbers of initiated clutches in our populations were correlated with this index from the previous autumn, supporting the idea that populations in peripheral habitats are sensitive yardsticks for overall population size. (lu.se)
The source- tion range, the Scandinavian subalpine forests sink model (Murphy 2001) is one of the ways to form peripheral habitats, which were colonised rel- understand population dynamics. (lu.se)

Determinants of dynamics: Population size, stability and persistence. (ox.ac.uk)

Characterization of size-at-age and somatic growth patterns for Kemps ridleys in the Gu. (noaa.gov)
Division of Marine Fisheries biologists research Jonah crab size at maturity, movement patterns, and growth. (mass.gov)

The census provides data on household characteristics as well as size, growth, composition and dynamics of population. (azpdf.net)
We consider the Moran model with recombination, which describes the evolution of the genetic composition of a population under recombination and resampling. (tue.nl)
Determine the influence of habitat composition, patch size, and edge at multiple spatial scales on the probability of colonization 4. (confex.com)

These concepts will be applied in models for analysing fluctuations in size of populations in space and time. (ntnu.edu)
The second theme deals with the importance of population dynamics, especially fluctuations in fertility, and thus cohort size, on living standards in industrial society. (lu.se)

See also exponential population growth and logistic population growth. (wikipedia.org)

Maintaining healthy populations contributes to overall biodiversity and fosters harmony between humans and nature. (topfalconry.com)

This will have direct bearing on the epidemiology, dynamics, and future trends in CWD transmission and spread. (nih.gov)

The algebraic symbols b, d and r stand for the rates of birth, death, and the rate of change per individual in the general population, the intrinsic rate of increase. (wikipedia.org)
The rate at which a population increases in size if there are no density-dependent forces regulating the population is known as the intrinsic rate of increase. (wikipedia.org)
It is d N d t = r N {\displaystyle {\frac {dN}{dt}}=rN} where the derivative d N / d t {\displaystyle dN/dt} is the rate of increase of the population, N is the population size, and r is the intrinsic rate of increase. (wikipedia.org)
This is to understand the between-subjects variation, in addition to the intrinsic variation in individual dynamics. (lu.se)

LPJ-GUESS is a flexible framework for modelling the structure and dynamics of terrestrial ecosystems at landscape, regional and global scales. (lu.se)

These included annual harvest records, 6 age structure surveys and 5 population size surveys conducted at various times over the 32 year study. (enn.com)
Conclusions The infection fatality rate of COVID-19 can vary substantially across different locations and this may reflect differences in population age structure and case-mix of infected and deceased patients as well as multiple other factors. (researchgate.net)
Detailed analysis of the population-size structure of krill in the diet indicated a lack of recruitment of small krill into the population since 1996. (nerc.ac.uk)
Galaxies like our Milky Way can be described in terms of their structure, dynamics, and stellar populations. (utoronto.ca)
Furthermore, the age structure and population dynamics differed considerably from non-policed areas which still experienced harvesting. (alr-journal.org)

The term occupational health disparities refers to increased rates of work-related illness and injuries in particularly vulnerable populations [Centers for Disease Control and Prevention (CDC), 2011]. (cdc.gov)

The logistic model of population growth, while valid in many natural populations and a useful model, is a simplification of real-world population dynamics. (lumenlearning.com)

Mathematical models used to calculate changes in population demographics and evolution hold the assumption of no external influence. (wikipedia.org)
The formula can be read as follows: the rate of change in the population (dN/dT) is equal to growth (aN) that is limited by carrying capacity (1 − N/K). From these basic mathematical principles the discipline of population ecology expands into a field of investigation that queries the demographics of real populations and tests these results against the statistical models. (wikipedia.org)

citation needed] The beginning of population dynamics is widely regarded as the work of Malthus, formulated as the Malthusian growth model. (wikipedia.org)
Using the minimum population and best-case scenario respectively, this represents a 0.9% or 1.8% annual growth rate over the last decade and 1.0% or 1.3% annual growth rate since 1972. (stir.ac.uk)
While the population has grown, the results should be viewed with caution, not only because all known growth during the last decade can be attributed to one subset of the population, but also because the region is still plagued by political unrest. (stir.ac.uk)
The population growth rate, evaluated by use of a deterministic projection-matrix model, predicted a stable population, λ = 1.105 ± 0.063, 95% CI = 0.985-1.231 and λ = 1.114 ± 0.062, 0.996-1.239, using two different assumptions for the final age of reproduction by ptarmigan. (bioone.org)
The Government of India aims at lowering the growth rate of population to zero, to achieve a stationary state of population. (azpdf.net)
While many studies have investigated the effects of density on population growth or on dispersal, few have simultaneously examined density‐dependent effects at the scale of both the local population and the entire SSP. (uzh.ch)
Lastly, we used state‐space time series models to investigate whether density affected population growth in each pond. (uzh.ch)
Then, tree crown growth was deduced from detection results and compared with the expected dynamics of corresponding populations. (inria.fr)
We used these epidemiological parameters in a multi-stage population matrix model to evaluate relative fitness based on genotype-specific population growth rates. (nih.gov)
Nature regulates population growth in a variety of ways. (lumenlearning.com)

A neutral marker such as the cytochrome c oxidase I (COI) gene can help establish genetic diversity and maternal gene flow among populations. (umaine.edu)

95% CIs assume a Poisson distribution);based on no. cases enrolled from each geography divided by the population estimates for each geography annualized to the duration of study period. (cdc.gov)
A recent U.S. Geological Survey estimates that the Pacific walrus population nearly halved between 1981 and 1999, the last year for which demographic data are available. (enn.com)
These first estimates of blue catfish population dynamics in the Chesapeake Bay region provide inputs for projection models to evaluate prospective management actions and identify monitoring needs. (usgs.gov)
We conducted 16 field-based dog population estimates in urban, semi-urban and rural areas of Guatemala to determine HDR and evaluate the standard 5:1. (cdc.gov)

We show how a major shock to population can trigger a transition to a new steady state with higher per-capita income. (repec.org)

The purpose of this research is to identify sustainable harvest regimes and to developed long-term monitoring methods and management strategies of lake fish top consumer populations. (umu.se)
Scientists think past walrus population dynamics were affected mainly by harvest. (enn.com)
Biologists work aboard cooperating commercial vessels to measure the sizes of whelk captured in the traps, and this information is used to characterize the commercial harvest in various portions of MA waters. (mass.gov)

The field of population ecology often uses data on life history and matrix algebra to develop projection matrices on fecundity and survivorship. (wikipedia.org)
The concept is commonly used in insect population ecology or management to determine how environmental factors affect the rate at which pest populations increase. (wikipedia.org)

In 2000 we estimated population size using repeated observations of 17 habituated groups and information on 15 unhabituated groups obtained during patrols. (stir.ac.uk)

This bursting behavior can coexist with steady-state behavior, providing a bistable regime that allows for transient switches between synchronized and nonsynchronized states of population dynamics. (nih.gov)
In summary, we provide mechanistic descriptions of phase transitions between bursting and steady-state population dynamics, which play important roles in both healthy neural communication and neurological disorders. (nih.gov)
Steady-state dynamics are governed by cell division and commitment rates as well as by population sizes, while feedback components guarantee the restoration of steady-state conditions. (lu.se)

economic characteristics of population. (azpdf.net)

Gaining insights into these dynamics can aid wildlife managers and conservationists in implementing targeted measures to ensure healthy falcon populations amidst increasing human activities and changing landscapes. (topfalconry.com)
Still, little is known about how genetic differences might influence natural selection within wildlife populations. (nih.gov)

Currently, I am developing population models to inform Invasive carp management and developing methods for applying occupancy models to environmental DNA (eDNA). (usgs.gov)
Stock assessment modeling provides a means to estimate the population dynamics of invasive fishes and may do so despite data limitations. (usgs.gov)

Next, through the interrogation of survey data, we tested these hypotheses by analysing population trends and stopover duration of migratory waterbirds experiencing loss of staging habitat. (datadryad.org)
The subsequent increasing population density on the staging habitat has knock on effects on population dynamics in the breeding and overwintering stage. (datadryad.org)
NetLogo code to construct the individual-based model with capital breeding tactic and income breeding tactic respectively, and to get the model outputs including: total number of individuals, daily population density at each habitat, individual time spent at each habitat, individual energy reserves when leaving each habitat and individual energy reserves at each time step. (datadryad.org)
In the long term, the population will likely stabilize due to factors such as disease, lack of available nesting habitat, or limitations on food resources. (fws.gov)

The decrease in population size since the start of this survey was most evident for the two sink populations. (lu.se)

However, the link between the population dynamics of migratory birds and migration tactic plasticity is not well understood. (datadryad.org)

It is likely that these price increases have led to harvesting pressure on established wild populations. (alr-journal.org)

Small populations are particularly susceptible to disturbance. (stir.ac.uk)
Although the mean-field model has been derived under the assumptions of an infinite population size and all-to-all coupling inside the population, we show that this correspondence holds even for small, sparsely coupled networks. (nih.gov)
To illustrate the concept of overlapping vulnerabilities, this report focuses on three populations that research indicates are at increased risk for adverse work-related health outcomes- Hispanic immigrants (individuals living in the United States who were born in Latin America), small business employees (firms with fewer than 20 employees), and young workers ( (cdc.gov)

The first phase of the simulation is known as the spinup , and normally takes 1000 years in population mode, or three times the generic disturbance interval in cohort or individual mode (see Section 2.3). (lu.se)

When so many humans live together in relatively close quarters (particularly with lack of good, or any, sewage systems and the like), disease spreads quickly with the general population continually getting exposed to numerous pathogens. (todayifoundout.com)

We estimated age-specific demographic parameters of the core population breeding on Mt. Norikura in Gifu and Nagano prefecture in Japan. (bioone.org)

Population data, 1950–2018. (crossref.org)
Currently, the USGS is working to obtain more recent population data of the Pacific walrus. (enn.com)
However, most of our knowledge about cell proliferation comes from studies that average data from large and mixed cell populations. (frontiersin.org)
However, it is possible to make several generalizations from passive surveillance data and trends in the reporting of cases of rabies in animals, especially from detailed studies of red fox populations in Europe. (cdc.gov)

In real-life situations, population regulation is very complicated and density-dependent and independent factors can interact. (lumenlearning.com)

A simulation (PM4) of the annual cycle of the common grackle (Quiscalus quiscula) population in the eastern United States demonstrated why removing 4.2 million birds in one winter had no discernible impact on subsequent breeding populations. (escholarship.org)

Models are essential to project how populations will respond to proposed management actions, providing a scientific foundation to counter the emotional debates that often arise. (escholarship.org)
Four population models (PM1 to PM4) for predicting population responses are described. (escholarship.org)
Eco-evolutionary models of spatiotemporal dynamics of plant-pollinator communities. (lu.se)

A disaster occurs somewhere in the world almost daily, but these events vary considerably in scope, size, and context. (medscape.com)

Although my skill set and research interests may appear to be broad, they have an underlying theme of studying population-level effects and distribution and then applying these finding to resource management. (usgs.gov)
This computational approach to the haematopoietic system is novel and provides insight into the dynamics and the nature of possible solutions, with potential applications in both fundamental and clinical research. (lu.se)

Based 2011 Population and Housing Census. (cdc.gov)
However, due to war and political unrest in the region since 1990, no census had been conducted since 1989, when the population was thought to number 324 gorillas. (stir.ac.uk)
The last population census of India was conducted in year 2011. (azpdf.net)
The reference date for the population figures provided by Population Census of India, 2011, is 1st March 2011. (azpdf.net)
percentage change in population for the census decade. (azpdf.net)

The last overall population estimate, done in 1992, found that approximately 135,000 to 175,000 emperor penguins lived around the continent. (csmonitor.com)

It is often difficult to examine the precise epizootic characteristics of rabies as it spreads among animals of a given population. (cdc.gov)
An apparent host threshold density has been suggested as necessary for rabies to perpetuate in red fox populations.15 Below this threshold, contacts appear too few to continue transmission. (cdc.gov)
To date, this is the most extensive dog-population evaluation conducted in Guatemala, and can be used to inform future rabies vaccination campaigns needed to meet the global 2030 rabies elimination targets. (cdc.gov)

Anatomy5

Organisms70

Diseases4

Chemicals and Drugs11

Analytical, Diagnostic and Therapeutic Techniques and Equipment28

Psychiatry and Psychology9

Phenomena and Processes90

Disciplines and Occupations13

Anthropology, Education, Sociology and Social Phenomena6

Technology, Industry, Agriculture8

Information Science8

Health Care52

Geographicals14

Species30

Local populations2

Fish populations5

Extinction6

Conservation8

Understanding11

Predation2

Processes6

Dynamical1

Mortality7

Negatively1

Abstract2

Stochastic2

Ecosystem2

Prey1

Viability2

Impacts2

Abundance4

Reproductive1

Heterogeneity1

Additionally2

Adaptive1

Decline6

Lineages1

Geometric1

Mechanisms3

Ecological2

Densities2

Infectious2

Habitats4

Persistence1

Patterns2

Composition3

Fluctuations2

Exponential1

Contributes1

Epidemiology1

Intrinsic4

Terrestrial1

Structure5

Vulnerable1

Logistic1

Demographics2

Growth10

Establish1

Estimates4

Capita1

Harvest3

Ecology2

20001

Steady state3

Characteristics of population1

Wildlife2

Invasive2

Habitat4

Decrease1

Migration1

Increases1

Small3

Cohort1

Pathogens1

Demographic parameters1

Data4

Density-dependent1

Subsequent1

Models3

Considerably1

Research2

Census5

19921

Rabies3