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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


Demography: social group size and composition and population density

Thomas T. Struhsaker

in The Red Colobus Monkeys: Variation in Demography, Behavior, and Ecology of Endangered Species

Published in print:
2010
Published Online:
May 2010
ISBN:
9780198529583
eISBN:
9780191712746
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529583.003.0003
Subject:
Biology, Animal Biology, Biodiversity / Conservation Biology

An understanding of the parameters affecting intra-and intertaxa demographic variation is critical to both the applied and theoretical evaluation of this variation, such as in the development of ... More


The National Evidence

Chris Bramall

in The Industrialization of Rural China

Published in print:
2006
Published Online:
January 2007
ISBN:
9780199275939
eISBN:
9780191706073
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199275939.003.0007
Subject:
Economics and Finance, South and East Asia

The evidence on the determinants of growth for China’s counties in the post-1978 era points to the clear causal role of initial conditions. Proximity to large urban centres, the dependency rate, and ... More


A Population Density Model of the Driven LGN/PGN

Marco A. Huertasand and Gregory D. Smith

in Stochastic Methods in Neuroscience

Published in print:
2009
Published Online:
February 2010
ISBN:
9780199235070
eISBN:
9780191715778
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235070.003.0008
Subject:
Mathematics, Biostatistics

The interaction of two populations of integrate-and-fire-or-burst neurons representing thalamocortical cells from the dorsal lateral geniculate nucleus (dLGN) and thalamic reticular cells from the ... More


City Sizes and Urbanization in the Roman Empire

Andrew Wilson

in Settlement, Urbanization, and Population

Published in print:
2011
Published Online:
May 2012
ISBN:
9780199602353
eISBN:
9780191731570
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199602353.003.0007
Subject:
Classical Studies, European History: BCE to 500CE, Archaeology: Classical

This chapter looks at some of the physical evidence for Roman towns to see how we might establish the parameters of the plausible in estimating population densities for Roman cities in different ... More


Human Social Evolution: A Comparison of Hunter-gatherer and Chimpanzee Social Organization

Robert Layton and Sean O'Hara

in Social Brain, Distributed Mind

Published in print:
2010
Published Online:
January 2012
ISBN:
9780197264522
eISBN:
9780191734724
Item type:
chapter
Publisher:
British Academy
DOI:
10.5871/bacad/9780197264522.003.0005
Subject:
Psychology, Evolutionary Psychology

This chapter compares the social behaviour of human hunter-gatherers with that of the better-studied chimpanzee species, Pan troglodytes, in an attempt to pinpoint the unique features of human social ... More


Peopling the Countryside: Roman Demography in the Albegna Valley and Jerba

Elizabeth Fentress

in Quantifying the Roman Economy: Methods and Problems

Published in print:
2009
Published Online:
September 2009
ISBN:
9780199562596
eISBN:
9780191721458
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199562596.003.0005
Subject:
Classical Studies, European History: BCE to 500CE

The surveys of the Albegna Valley and the Island of Jerba were carried out respectively between 1979–1983 and 1995–2000 using similar methodologies (flow data and transect sampling). Each recovered ... More


Archaeology, Demography, and Roman Economic Growth

Willem Jongman

in Quantifying the Roman Economy: Methods and Problems

Published in print:
2009
Published Online:
September 2009
ISBN:
9780199562596
eISBN:
9780191721458
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199562596.003.0004
Subject:
Classical Studies, European History: BCE to 500CE

This chapter probes the potential of archaeological data for a reconstruction of the demography of ancient Rome. Unfortunately demographic structure is hard to document archaeologically: to calculate ... More


Urbanization in Etruria

Tom Rasmussen

in Mediterranean Urbanization 800-600 BC

Published in print:
2005
Published Online:
January 2012
ISBN:
9780197263259
eISBN:
9780191734618
Item type:
chapter
Publisher:
British Academy
DOI:
10.5871/bacad/9780197263259.003.0004
Subject:
Archaeology, Historical Archaeology

This chapter examines the process of urbanization in Etruria. There is general agreement that, in Etruria, urbanization was well under way by the end of the seventh century BC. During this period ... More


Big Bills Left on the Sidewalk: Why Some Nations Are Rich, and Others Poor

Mancur Olson

in A Not-so-dismal Science: A Broader View of Economies and Societies

Published in print:
2000
Published Online:
November 2003
ISBN:
9780198294900
eISBN:
9780191596728
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0198294905.003.0002
Subject:
Economics and Finance, Economic Systems

The idea is advanced that it is the rationality of individuals in societies that makes them achieve their production potential rather than their per capita productive resources, and that the ... More


Population Densities and Dynamics

Dietland Müller-Schwarze

in The Beaver: Its Life and Impact

Published in print:
2011
Published Online:
August 2016
ISBN:
9780801450105
eISBN:
9780801460869
Item type:
chapter
Publisher:
Cornell University Press
DOI:
10.7591/cornell/9780801450105.003.0011
Subject:
Biology, Animal Behavior / Behavioral Ecology

This chapter provides an overview of beaver population densities and population dynamics. Beavers hold territories that contain essential food and water resources, thus limiting their population ... More


Linking dispersal to spatial dynamics

Tim G. Benton and Diana E. Bowler

in Dispersal Ecology and Evolution

Published in print:
2012
Published Online:
December 2013
ISBN:
9780199608898
eISBN:
9780191774560
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199608898.003.0020
Subject:
Biology, Ecology, Evolutionary Biology / Genetics

This chapter focuses on population dynamics, and how the demographic processes underpinning them are affected by dispersal and its evolution. It examines the dynamical consequences of dispersal on ... More


Density: Universes with Definite Limits

Alison Bashford

in Global Population: History, Geopolitics, and Life on Earth

Published in print:
2014
Published Online:
November 2015
ISBN:
9780231147668
eISBN:
9780231519526
Item type:
chapter
Publisher:
Columbia University Press
DOI:
10.7312/columbia/9780231147668.003.0003
Subject:
History, World Modern History

This chapter explores the debates surrounding the question of population density, or, the optimum ratio of people to space. Raymond Pearl's paper at the 1927 World Population Conference sets the tone ... More


Man-Eating Tigers

Peter Boomgaard

in Frontiers of Fear: Tigers and People in the Malay World, 1600-1950

Published in print:
2001
Published Online:
October 2013
ISBN:
9780300085396
eISBN:
9780300127591
Item type:
chapter
Publisher:
Yale University Press
DOI:
10.12987/yale/9780300085396.003.0004
Subject:
History, Asian History

This chapter reviews data about man-eating tigers that suggests an inverse linear relationship between population densities and per capita numbers of people killed by tigers. In areas with low ... More


Resolving the African Financial Development Gap: Cross-Country Comparisons and a Within-Country Study of Kenya

Franklin Allen, Elena Carletti, Robert Cull, Jun Qian, Lemma Senbet, and Patricio Valenzuela

in African Successes, Volume III: Modernization and Development

Published in print:
2016
Published Online:
May 2017
ISBN:
9780226315720
eISBN:
9780226315867
Item type:
chapter
Publisher:
University of Chicago Press
DOI:
10.7208/chicago/9780226315867.003.0001
Subject:
Economics and Finance, Development, Growth, and Environmental

With extensive country- and firm-level data sets we first document that the financial sectors of most sub-Saharan African countries remain significantly underdeveloped by the standards of other ... More


Classifying Rodent Population Changes

Charles J. Krebs

in Population Fluctuations in Rodents

Published in print:
2013
Published Online:
September 2013
ISBN:
9780226010359
eISBN:
9780226010496
Item type:
chapter
Publisher:
University of Chicago Press
DOI:
10.7208/chicago/9780226010496.003.0001
Subject:
Biology, Ecology

This chapter discusses the rise and fall of rodent populations, and classifies these population changes. First, it defines four background issues that must be reviewed before classifying patterns of ... More


Mayfly Population Density, Persistence and Genetic Structure in Fragmented Headwater Habitats

L. C. Alexander and W. O. Lamp

in International Advances in the Ecology, Zoogeography, and Systematics of Mayflies and Stoneflies

Published in print:
2008
Published Online:
March 2012
ISBN:
9780520098688
eISBN:
9780520943803
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520098688.003.0003
Subject:
Biology, Animal Biology

This chapter investigates the effects of steam habitat loss and fragmentation on the density, genetic diversity, and persistence of Ephemerella inconstans in twenty-four steams across nine headwater ... More


At the Margins of the Champion Countryside: The Emergence of Villages and Common Fields in Somerset

Stephen Rippon

in Beyond the Medieval Village: The Diversification of Landscape Character in Southern Britain

Published in print:
2008
Published Online:
January 2009
ISBN:
9780199203826
eISBN:
9780191708282
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199203826.003.0002
Subject:
History, British and Irish Medieval History

This chapter examines the landscape of Somerset, which lies at the south‐western limit of landscapes that in the medieval period were characterized by villages and open fields. The topographical ... More


Biogeography of Rodent Population Fluctuations

Charles J. Krebs

in Population Fluctuations in Rodents

Published in print:
2013
Published Online:
September 2013
ISBN:
9780226010359
eISBN:
9780226010496
Item type:
chapter
Publisher:
University of Chicago Press
DOI:
10.7208/chicago/9780226010496.003.0002
Subject:
Biology, Ecology

This chapter discusses the amplitude of population change in a variety of small rodent species, focusing on the latitudinal variations in population variability and population density. The ... More


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