On the Regulation of Populations of Mammals, Birds, Fish, and Insects

@article{Sibly2005OnTR,
  title={On the Regulation of Populations of Mammals, Birds, Fish, and Insects},
  author={Richard M Sibly and Daniel Barker and Michael C. Denham and Jim Hone and Mark Pagel},
  journal={Science},
  year={2005},
  volume={309},
  pages={607 - 610}
}
A key unresolved question in population ecology concerns the relationship between a population's size and its growth rate. We estimated this relationship for 1780 time series of mammals, birds, fish, and insects. We found that rates of population growth are high at low population densities but, contrary to previous predictions, decline rapidly with increasing population size and then flatten out, for all four taxa. This produces a strongly concave relationship between a population's growth rate… Expand
On the stability of populations of mammals, birds, fish and insects.
TLDR
In a study of 634 populations of mammals, birds, fish and insects, it is found that most can be expected to remain stable despite year to year fluctuations caused by environmental factors. Expand
Comment on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects" III
TLDR
Time series suggest that populations of large-bodied animals underfill their environments because they measure strength of density compensation, which is consistent with slower responses in ascent than descent toward carrying capacity. Expand
Response to Comment on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects"
Our conclusions are unaffected by removal of the time series identified by Peacock and Garshelis as harvest data. The relationship between a population's growth rate and its size is generally concaveExpand
Comment on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects" IV
TLDR
Sibly et al.'s contention that density dependence acts strongly on low-density animal populations irrespective of body size contradicts many long-term studies of large mammals. Expand
Comment on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects" I
TLDR
It is argued that the authors confused discrete and continuous models, that their best-fit models cannot explain observed oscillations, and that their estimation procedures appear biased. Expand
Comment on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects" II
  • J. Ross
  • Biology, Medicine
  • Science
  • 2006
TLDR
It is explained why some aspects of their analysis are questionable and, therefore, why their results and estimation procedure should be used with care. Expand
Genetic diversity affects the strength of population regulation in a marine fish.
TLDR
The results suggest that the genetic and phenotypic composition of populations can play a major role in their dynamics, and Mechanisms that contributed to this pattern include links between genetic diversity, habitat use, and spatial crowding. Expand
Genetic diversity affects the strength of population regulation in a marine fish
Variation is an essential feature of biological populations, yet much of ecological theory treats individuals as though they are identical. This simplifying assumption is often justified by theExpand
Evidence for the buffer effect operating in multiple species at a national scale
TLDR
Habitat-specific population trends for 85 bird species from long-term national monitoring data are used and it is found that both patterns of population change and changes in habitat preference are consistent with the predictions of the buffer effect, providing support for its widespread operation. Expand
Response to Comments on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects"
The technical comments by Getz and Lloyd-Smith, Ross, and Doncaster focus on specific aspects of our analysis and estimation and do not demonstrate any results opposing our key conclusion—that,Expand
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References

SHOWING 1-10 OF 46 REFERENCES
Mammal population regulation, keystone processes and ecosystem dynamics.
  • A. Sinclair
  • Biology, Medicine
  • Philosophical transactions of the Royal Society of London. Series B, Biological sciences
  • 2003
TLDR
It is shown how keystone processes can, in principle, be measured using the example of the wildebeest in the Serengeti ecosystem and how these relationships are relevant to applied aspects of conservation and pest management. Expand
Demographic Characteristics and Population Dynamical Patterns of Solitary Birds
TLDR
Using time-series data on populations of solitary bird species, it is found that fluctuations in population size of solitary birds were affected by the deterministic characteristics of the population dynamics as well as the stochastic factors, and patterns in avian population fluctuations can be predicted. Expand
Environmental stochasticity and population dynamics of large herbivores: a search for mechanisms.
  • B. Sæther
  • Biology, Medicine
  • Trends in ecology & evolution
  • 1997
TLDR
A thorough understanding of the mechanisms generating population fluctuations suggests that studies of ungulates will provide an important source for examining effects of long-term changes in the environment, for instance, resulting from a climatic change. Expand
Complex numerical responses to top-down and bottom-up processes in vertebrate populations.
  • A. Sinclair, C. Krebs
  • Biology, Medicine
  • Philosophical transactions of the Royal Society of London. Series B, Biological sciences
  • 2002
TLDR
Some relationships between growth rate and density can be hyperbolic or even have multiple nodes, and this work illustrates some of these in marsupial, ungulate and rabbit populations. Expand
Stability and Instability in Ungulate Populations: An Empirical Analysis
TLDR
This article investigates the causes of variation in population stability in ungulates by comparing the contrasting dynamics of two naturally regulated island populations: the Soay sheep population of Hirta (St. Kilda) and the red deer population of the North Block of Rum, where numbers have been stable for over a decade. Expand
Density Dependence as Related to Life History Strategy
Both theory and empirical information support the conclusion that most density-de- pendent change occurs at high population levels (close to the carrying capacity) for species with life historyExpand
Life History Variation, Population Processes and Priorities in Species Conservation: Towards a Reunion of Research Paradigms
TLDR
It is argued that a relationship between life history variation and population processes may form the foundation for developing a theory for variation in population growth rate and that the securing of survival habitats for especially longlived species outside the breeding season should be focused on. Expand
Population viability analysis
TLDR
This book evaluates what has become a key tool in estimating extinction risk and evaluating potential recovery strategies - population viability analysis, or PVA, to predict whether a given population will remain viable under various management options. Expand
Consequences of the Allee effect for behaviour, ecology and conservation.
TLDR
The Allee effect can be regarded not only as a suite of problems associated with rarity, but also as the basis of animal sociality. Expand
Population growth rate and its determinants: an overview.
  • R. Sibly, J. Hone
  • Biology, Medicine
  • Philosophical transactions of the Royal Society of London. Series B, Biological sciences
  • 2002
TLDR
It is concluded that population regulation, density dependence, resource and interference competition, the effects of environmental stress and the form of the ecological niche, are all best defined and analysed in terms of population growth rate. Expand
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