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Population and Community Ecology of Ontogenetic Development$
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André M. de Roos and Lennart Persson

Print publication date: 2013

Print ISBN-13: 9780691137575

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691137575.001.0001

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Biomass Overcompensation

Biomass Overcompensation

Chapter:
(p.49) Chapter Three Biomass Overcompensation
Source:
Population and Community Ecology of Ontogenetic Development
Author(s):

André M. de Roos

Lennart Persson

Publisher:
Princeton University Press
DOI:10.23943/princeton/9780691137575.003.0003

This chapter investigates the necessary conditions for the biomass in particular size ranges of a population to increase in response to an increase in mortality, and how the overcompensation comes about through a change in the population energetics. Ultimately, this overcompensation in stage-specific biomass solely results from the interplay between mortality and intraspecific, exploitative competition for resources among consumers. As a direct effect, mortality decreases overall density, but indirectly benefits survivors through the relaxation of competition for resources. This change in resource use by the consumer population may lead to biomass overcompensation, even in the absence of any increase in resource productivity.

Keywords:   bioenergentics, population models, ecology, ecological dynamics, biomass overcompensation, resource competition, consumer population

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