Effects of Population Density on Growth Rates of Animal Populations
Author :
Publisher :
Page : 56 pages
File Size : 27,26 MB
Release : 1964
Category :
ISBN :
Author :
Publisher :
Page : 56 pages
File Size : 27,26 MB
Release : 1964
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ISBN :
Author :
Publisher :
Page : pages
File Size : 21,51 MB
Release : 1964
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Author : R. M. Sibly
Publisher : Cambridge University Press
Page : 372 pages
File Size : 24,54 MB
Release : 2003-08-07
Category : Nature
ISBN : 9780521533478
What determines where a species lives? And what determines its abundance? This book takes a fresh approach to some of the classic questions in ecology. Despite great progress in the twentieth century much more remains to be done before we can provide full answers to these questions. The methods described and deployed in this book point the way forward. The core message of the book is that the key insights come from understanding what determines population growth rate, and that application of this approach will make ecology a more predictive science. Topics covered include population regulation, density-dependence, the ecological niche, resource and interference competition, habitat fragmentation and the ecological effects of environmental stress, together with applications to conservation biology, wildlife management, human demography and ecotoxicology. After a substantial introduction by the editors the book brings together contributions from leading scientists from Australia, New Zealand, North America, Europe and the U.K.
Author : McLaren
Publisher : Transaction Publishers
Page : 204 pages
File Size : 15,6 MB
Release : 1971
Category : Animal populations
ISBN : 0202367452
Author : Lawrence B. Slobodkin
Publisher : New York : Dover Publications
Page : 272 pages
File Size : 25,62 MB
Release : 1980
Category : Science
ISBN :
Author : National Research Council
Publisher : National Academies Press
Page : 399 pages
File Size : 35,36 MB
Release : 2013-10-04
Category : Technology & Engineering
ISBN : 0309264944
Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.
Author : Paul D. Clarke
Publisher :
Page : 0 pages
File Size : 21,2 MB
Release : 1996
Category : Animal populations
ISBN :
Animal population densities are thought to be "regulated" by density-dependent processes (Haldane, 1953; Royama, 1977: Berryman, 1991). The perceived importance of these processes to biologists is evident from the vast amount of research dedicated to this idea (Inchausti, 1994). Most of this research addresses the problem(s) of detecting the effect of density-dependent regulatory processes using time series data. However, the question of the relative importance of density-dependent factors upon rates of change of population abundances is rarely addressed. In this thesis, I quantify the importance of density-dependent factors in 303 natural animal populations. I found that, on average, only $\approx$19% of the temporal variability in per capita growth rate could be statistically related to population density. Yet research effort concentrates overwhelmingly on density-dependent processes. I conclude that the effects of density-dependent processes within natural animal populations are generally weak and disproportionately studied.
Author : Ian A. McLaren
Publisher : Routledge
Page : 263 pages
File Size : 46,8 MB
Release : 2017-07-05
Category : Science
ISBN : 1351503464
Surveying an area dense with conflicting observations and ideas, this volume vividly depicts the current state of knowledge as well as the great diversity of opinion in the field of population ecology. Ten papers by outstanding authorities focus on three main issues-the effects of environment and population density on population dynamics, the influence of animal behavior on population growth, and the possibilities of genetic feedback or short-term evolutionary change on control of animal populations. An incisive introduction by the editor establishes a frame of reference and supplies succinct resolutions of some of the important controversies dealt with in these pages.
Author : R. Moss
Publisher : Springer Science & Business Media
Page : 84 pages
File Size : 25,37 MB
Release : 1982-10-31
Category : Science
ISBN : 9780412222405
This text on animal pollution dynamics should be of interest to those studying ecology, population dynamics and pest control.
Author : Hermann Remmert
Publisher : Springer Science & Business Media
Page : 162 pages
File Size : 37,72 MB
Release : 2012-12-06
Category : Science
ISBN : 3642782140
H. REMMERT Small populations are very often discussed, but there seems to be no general overview touching all the self-evident but norma,lly simply neglected problems connected with small populations. First, there are many very different types of organisms, and as every biologist should know, the problems of small populations are very different in different types of organisms. 1. In vascular plants the problems are different from the situation in birds and mammals; in marine benthic animals or in parasites such as tapeworms the problems are different again, and in seasonal planktonic animals or insects they are different from those in biotopes under constant conditions. In tapeworms or in vascular plants, an adult organism seems to be comparable to a population of mammals or birds because its offspring can be so diverse and plentiful. 2. There are small populations which explode and break down to a small population again, and then explode and break down again.