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The Avian MigrantThe Biology of Bird Migration$
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John Rappole

Print publication date: 2013

Print ISBN-13: 9780231146784

Published to Columbia Scholarship Online: November 2015

DOI: 10.7312/columbia/9780231146784.001.0001

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PRINTED FROM COLUMBIA SCHOLARSHIP ONLINE (www.columbia.universitypressscholarship.com). (c) Copyright University of Minnesota Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CUPSO for personal use.date: 26 September 2021

Population Ecology

Population Ecology

Chapter:
(p.198) Chapter 7 Population Ecology
Source:
The Avian Migrant
Author(s):

John H. Rappole

Publisher:
Columbia University Press
DOI:10.7312/columbia/9780231146784.003.0007

This chapter focuses on the avian migrant's population ecology. The basic equation for population growth states that change in the population over time equals the birth or natality rate minus the death or mortality rate. This type of population growth is referred to as “density independent.” Although no population is truly independent of its size, as population size is what birth and death rates act upon, in density-independent populations there is little interindividual effect on members based on their numbers alone. This chapter describes an alternative model for density-dependent population limitation in multiple habitats. It then considers other models for migrant population limitation that emphasized breeding habitat availability and assumed that nonbreeding-period effects on population size were assumed to be largely density-independent. It also discusses the density-independent and density-dependent causes of population change in avian migrants.

Keywords:   population ecology, population growth, mortality, population size, breeding, breeding habitat, population change, avian migrants

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