How do species really divide resources?

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dc.contributor.authorTaper, ML
dc.contributor.authorMarquet, PA
dc.date.accessioned2025-01-21T01:34:01Z
dc.date.available2025-01-21T01:34:01Z
dc.date.issued1996
dc.description.abstractWe show that the relationship between variance in population energy use and variance in species abundance depends critically on the model of causal relationships among metabolic rate, body size, and population density assumed, provided that they specify alternative paths of error propagation. It has been claimed that the allometric relationship between population density and body size indicates that species within communities use resources less equitably than would be inferred from a particular species abundance distribution. Our analysis of 41 local bird communities shows that this claim is supported only if it is assumed that both body size and metabolic rate are a consequence of population density. A more realistic model that assumes a causal role for body size as affecting metabolic rate and population density provides estimates of variance in population energy use that closely match the pattern of variance in population density. This implies that the apportionment of individuals and resources, among species, are equivalent processes.
dc.fuente.origenWOS
dc.identifier.eissn1537-5323
dc.identifier.issn0003-0147
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97502
dc.identifier.wosidWOS:A1996UP97600010
dc.issue.numero6
dc.language.isoen
dc.pagina.final1086
dc.pagina.inicio1072
dc.revistaAmerican naturalist
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleHow do species really divide resources?
dc.typeartículo
dc.volumen147
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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