The more-individuals hypothesis revisited: the role of community abundance in species richness regulation and the productivity-diversity relationship

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10386090" target="_blank" >RIV/00216208:11310/18:10386090 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11620/18:10386090

Result on the web

<a href="https://doi.org/10.1111/ele.12941" target="_blank" >https://doi.org/10.1111/ele.12941</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ele.12941" target="_blank" >10.1111/ele.12941</a>

Result language

angličtina

Original language name

The more-individuals hypothesis revisited: the role of community abundance in species richness regulation and the productivity-diversity relationship

Original language description

Species richness increases with energy availability, yet there is little consensus as to the exact processes driving this species-energy relationship. The most straightforward explanation is the more-individuals hypothesis (MIH). It states that higher energy availability promotes a higher total number of individuals in a community, which consequently increases species richness by allowing for a greater number of species with viable populations. Empirical support for the MIH is mixed, partially due to the lack of proper formalisation of the MIH and consequent confusion as to its exact predictions. Here, we review the evidence of the MIH and evaluate the reliability of various predictions that have been tested. There is only limited evidence that spatial variation in species richness is driven by variation in the total number of individuals. There are also problems with measures of energy availability, with scale-dependence, and with the direction of causality, as the total number of individuals may sometimes itself be driven by the number of species. However, even in such a case the total number of individuals may be involved in diversity regulation. We propose a formal theory that encompasses these processes, clarifying how the different factors affecting diversity dynamics can be disentangled.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/GA16-26369S" target="_blank" >GA16-26369S: Are there limits to diversity? Towards an equilibrium theory of biodiversity</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ecology Letters

ISSN

1461-023X

e-ISSN

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Volume of the periodical

21

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

18

Pages from-to

920-937

UT code for WoS article

000431987100015

EID of the result in the Scopus database

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