Large temporal and spatial scales in the structure of mammalian assemblages in South America

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dc.contributor.authorMarquet, PA
dc.contributor.authorCofré, H
dc.date.accessioned2025-01-21T01:32:05Z
dc.date.available2025-01-21T01:32:05Z
dc.date.issued1999
dc.description.abstractWe analyze the distribution of body masses for 701 species of South American terrestrial mammals at different spatial resolutions from continental to biome, to local habitat scales. Previous studies on North American mammals suggest that body size distributions are highly modal and right skewed at continental scales, but become more uniform as spatial scale decreases. We show, in general, that these patterns also hold for the body size distribution of South American terrestrial mammals. However, we also found some striking differences attributable to the history of this biota and related to the Great American Biotic Interchange (GABI). At continental scales the distribution of body masses for South American mammals is highly right skewed and possesses several modes. One mode corresponds to species derived from North American ancestors, while a second mode, towards larger size, is characteristic of the South American stock. The same pattern is apparent at biome and local habitat scales. We found support for the progressive flattening of the distributions as spatial scale decreases, but they do not become as flat (indistinguishable from log-uniform) as they do in North America. However, the pattern is stronger for species of South American origin. Our results indicate that there is a strong historical component affecting the macroecological structure of contemporary assemblages at different spatial scales. Body size distributions can provide valuable information on the ways biotas built up.
dc.fuente.origenWOS
dc.identifier.eissn1600-0706
dc.identifier.issn0030-1299
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97201
dc.identifier.wosidWOS:000080841400013
dc.issue.numero2
dc.language.isoen
dc.pagina.final309
dc.pagina.inicio299
dc.revistaOikos
dc.rightsacceso restringido
dc.subject.ods14 Life Below Water
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa14 Vida submarina
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleLarge temporal and spatial scales in the structure of mammalian assemblages in South America
dc.typeartículo
dc.volumen85
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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