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Theory-Based EcologyA Darwinian approach$
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Liz Pásztor, Zoltán Botta-Dukát, Gabriella Magyar, Tamás Czárán, and Géza Meszéna

Print publication date: 2016

Print ISBN-13: 9780199577859

Published to Oxford Scholarship Online: August 2016

DOI: 10.1093/acprof:oso/9780199577859.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use.date: 01 July 2022

Population regulation and the ecological niche

Population regulation and the ecological niche

(p.200) Chapter 10 Population regulation and the ecological niche
Theory-Based Ecology

Liz Pásztor

Zoltán Botta-Dukát

Gabriella Magyar

Tamás Czárán

Géza Meszéna

Oxford University Press

On the basis of the theory of robust coexistence the ecological niche—one of the most controversial concepts in ecology—can be appropriately defined and operationalized. Abstract definitions for the notions of niche space, regulating variable, niche, niche overlap, and niche segregation are given in this chapter, with the range of their interpretation extended to alleles and clones besides the usual ecological (species-oriented) one. Models formulated in discrete and continuous niche spaces and temporal niches with circular (seasonal) timescales are explained. Several empirical examples of the three types of niche segregation (-trophical, spatial, and temporal) are introduced. Relation of temporal niche segregation and the storage effect is discussed. The community context dependence of the niche space and of the niche of any specific variant is emphasized and explicated. An evolutionary toy model of competition-induced diversification—the central idea of Darwin—closes the chapter.

Keywords:   niche segregation, trophic niche segregation, spatial niche segregation, temporal niche segregation, storage effect, niche space, niche overlap, structured population, dispersal, character displacement

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