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Allee Effects in Ecology and Conservation

Franck Courchamp, Ludek Berec, and Joanna Gascoigne

Published in print:
2008
Published Online:
May 2008
ISBN:
9780198570301
eISBN:
9780191717642
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570301.001.0001
Subject:
Biology, Biodiversity / Conservation Biology

Allee effects are broadly defined as a decline in individual fitness at low population size or density, that can result in critical population thresholds below which populations crash to extinction. ... More


Mechanisms for Allee effects

Franck Courchamp, Luděk Berec, and Joanna Gascoigne

in Allee Effects in Ecology and Conservation

Published in print:
2008
Published Online:
May 2008
ISBN:
9780198570301
eISBN:
9780191717642
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570301.003.0002
Subject:
Biology, Biodiversity / Conservation Biology

This chapter describes the mechanisms by which an Allee effect can arise. For each mechanism, the chapter discusses how it works in theory, and then presents current evidence for, and examples of, ... More


Reproductive Freedom

Tim Mulgan

in Future People: A Moderate Consequentialist Account of our Obligations to Future Generations

Published in print:
2006
Published Online:
May 2006
ISBN:
9780199282203
eISBN:
9780191603624
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/019928220X.003.0006
Subject:
Philosophy, Moral Philosophy

This chapter first establishes a strong prima facie Rule Consequentialist case in favour of reproductive freedom. Arguments against reproductive freedom are then examined and found wanting. Rule ... More


Inbreeding, geographic subdivision, and gene flow

Jacob Höglund

in Evolutionary Conservation Genetics

Published in print:
2009
Published Online:
May 2009
ISBN:
9780199214211
eISBN:
9780191706660
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199214211.003.0003
Subject:
Biology, Biodiversity / Conservation Biology, Evolutionary Biology / Genetics

This chapter outlines the theory of inbreeding including a brief account on the theory of population subdivision and gene flow. This is of relevance to conservation issues because habitat loss and ... More


Size Matters: Toward Understanding the Natural History of Genomes

Norman A. Johnson

in Darwinian Detectives: Revealing the Natural History of Genes and Genomes

Published in print:
2007
Published Online:
September 2007
ISBN:
9780195306750
eISBN:
9780199790203
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195306750.003.0012
Subject:
Biology, Evolutionary Biology / Genetics

Genome size varies widely among different organisms, and is not very closely correlated with complexity of the organism. In species with large genomes, most of the DNA does not code for genes. This ... More


Extraordinary Population Structure among the Baining of New Britain

Jason A. Wilder and Michael F. Hammer

in Population Genetics, Linguistics, and Culture History in the Southwest Pacific

Published in print:
2007
Published Online:
September 2007
ISBN:
9780195300307
eISBN:
9780199790142
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195300307.003.0013
Subject:
Biology, Evolutionary Biology / Genetics

This chapter examines with four unlinked loci the extent of divergence between two linguistically related Baining groups in New Britain. Although they are linguistically related and are less than 100 ... More


Extinction dynamics

Russell Lande, Steinar Engen, and Bernt-Erik SÆther

in Stochastic Population Dynamics in Ecology and Conservation

Published in print:
2003
Published Online:
April 2010
ISBN:
9780198525257
eISBN:
9780191584930
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198525257.003.0002
Subject:
Biology, Ecology

This chapter begins with a discussion of paleo-extinctions. It then discusses modern anthropogenic extinctions, diffusion approximation of stochastic dynamics, extinction trajectories in small ... More


Greater Sage-Grouse Population Dynamics and Probability of Persistence

Edward O. Garton, John W. Connelly, Jon S. Horne, Christian A. Hagen, Ann Moser, and Michael A. Schroeder

in Greater Sage-Grouse: Ecology and Conservation of a Landscape Species and Its Habitats

Published in print:
2011
Published Online:
March 2012
ISBN:
9780520267114
eISBN:
9780520948686
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520267114.003.0016
Subject:
Biology, Ornithology

A study was conducted to analyze Greater Sage-Grouse (Centrocercus urophasianus) populations throughout the species' range by accumulating and estimating counts of males at 9,870 leks identified ... More


Why the Philippine Negrito Languages are Endangered

Thomas N. Headland

in Endangered Languages of Austronesia

Published in print:
2009
Published Online:
May 2010
ISBN:
9780199544547
eISBN:
9780191720260
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199544547.003.0006
Subject:
Linguistics, Sociolinguistics / Anthropological Linguistics

This chapter explains why the thirty-plus Negrito languages in the Philippines are endangered, and what the projected future is for these numerically tiny post-foraging societies in the 21st century. ... More


Population Ecology

John H. Rappole

in The Avian Migrant: The Biology of Bird Migration

Published in print:
2013
Published Online:
November 2015
ISBN:
9780231146784
eISBN:
9780231518635
Item type:
chapter
Publisher:
Columbia University Press
DOI:
10.7312/columbia/9780231146784.003.0007
Subject:
Biology, Evolutionary Biology / Genetics

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 ... More


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