The paradox of energy equivalence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11620%2F13%3A10139509" target="_blank" >RIV/00216208:11620/13:10139509 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/j.1466-8238.2012.00782.x" target="_blank" >http://dx.doi.org/10.1111/j.1466-8238.2012.00782.x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/j.1466-8238.2012.00782.x" target="_blank" >10.1111/j.1466-8238.2012.00782.x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The paradox of energy equivalence

Popis výsledku v původním jazyce

Energy equivalence, the notion that population energy flux is independent of body mass, has become a key concept in ecology. We argue that energy equivalence is not an ecological rule, as claimed, but a flawed concept beset by circular reasoning. In fact, the independence of mass and energy flux is a null hypothesis. We show that our mechanistic understanding of sizedensity relationships (SDRs) follows directly from this null model and the assumption that energy limits abundance. Paradoxically, withoutthis assumption energy equivalence has no meaning and we lack a mechanistic understanding for SDRs. We derive an expression for the strength (r 2) of SDRs under the null model, which provides a framework within which to compare published SDRs. This confirms that tight correlations between mass and abundance are a trivial consequence of the span of body masses considered. Our model implies that energy flux varies by five to six orders of magnitude among similarly sized mammals and to a fa

Název v anglickém jazyce

The paradox of energy equivalence

Popis výsledku anglicky

Energy equivalence, the notion that population energy flux is independent of body mass, has become a key concept in ecology. We argue that energy equivalence is not an ecological rule, as claimed, but a flawed concept beset by circular reasoning. In fact, the independence of mass and energy flux is a null hypothesis. We show that our mechanistic understanding of sizedensity relationships (SDRs) follows directly from this null model and the assumption that energy limits abundance. Paradoxically, withoutthis assumption energy equivalence has no meaning and we lack a mechanistic understanding for SDRs. We derive an expression for the strength (r 2) of SDRs under the null model, which provides a framework within which to compare published SDRs. This confirms that tight correlations between mass and abundance are a trivial consequence of the span of body masses considered. Our model implies that energy flux varies by five to six orders of magnitude among similarly sized mammals and to a fa

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/GAP505%2F11%2F2387" target="_blank" >GAP505/11/2387: Limity druhového bohatství: makroekologická analýza evolučních a ekologických procesů podmiňujících diverzitu na povrchu Země</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Global Ecology and Biogeography

ISSN

1466-822X

e-ISSN

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Svazek periodika

22

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

000312455800001

EID výsledku v databázi Scopus

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