Show simple item record Belmaker, Jonathan Jetz, Walter
dc.coverage.spatial Global 2012-11-16T16:40:55Z 2012-11-16T16:40:55Z 2013-03-08
dc.identifier doi:10.5061/dryad.78sr6
dc.identifier.citation Belmaker J, Jetz W (2013) Spatial scaling of functional structure in bird and mammal assemblages. The American Naturalist, 181(4): 464-478.
dc.description Differences in trait composition, or functional structure, of assemblages across spatial scales may stem from the ability to tolerate local conditions (environmental filters) and from assembly rules (biological filters). However, disentangling their respective roles has proven difficult, and limited generalities have emerged from research on the spatial scaling of functional structure. Here we quantify differences in trait composition among 679 spatially nested (i.e., paired regional pool and local community) bird and mammal assemblages worldwide. Among the regional pool, we identify species with trait combinations within the range observed locally as the ecological species pool. The ecological species pool has a trait structure that is generally different from that of the regional pool, consistent with the operation of environmental filters. In contrast, local species trait structure generally shows little difference from that of the ecological pool. We find notable deviations from expectations based on equiprobable draws from the ecological pool. However, these deviations vary little across scales and broad environmental gradients. For mammals, but not birds, this is consistent with assembly rules. Thus, by conceptualizing ecological pools, we demonstrate that functional structure is jointly determined by processes causing both low and high functional differences between scales and are able to quantify their relative importance.
dc.relation.haspart doi:10.5061/dryad.78sr6/1
dc.relation.isreferencedby doi:10.1086/669906
dc.relation.isreferencedby PMID:23535612
dc.subject Biodiversity
dc.subject Community
dc.subject Macroecology
dc.subject gradient diversity
dc.subject Species diversity
dc.subject Bird
dc.subject Mammal
dc.title Data from: Spatial scaling of functional structure in bird and mammal assemblages
dc.type Article *
dc.contributor.correspondingAuthor Belmaker, Jonathan
prism.publicationName The American Naturalist

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Title The biological inventory assemblages, along with summary statistics and trait values
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Description The biological inventory assemblages, along with summary statistics such as their area, richness and trait values [mean(variance)]. All inventories were originally based on Meese (2005). For both birds and mammals we use five similar trait categories: diet, body size, activity time and two measures of foraging niche. Assemblage mean mass is based on log transformed data. Diet include estimates of the proportional use of each of seven dietary categories for mammals (seeds, fleshy fruits, nectar and pollen, other plant material, invertebrates, fish, vertebrates) and eight dietary categories for birds (seeds, fleshy fruits, nectar and pollen, other plant material, invertebrates, fish, carrion, other vertebrates. For birds the first foraging niche trait reflects proportional use of each of seven foraging categories (in water below surface of water, in water on surface, terrestrial ground-level, understory, mid-canopy, upper canopy, aerial). The second foraging niche trait separates species according to their broad habitat affinity to freshwater or terrestrial. Values for diet and, for birds, the first foraging trait are based on proportional use x 10. For mammals, the first foraging niche trait include foraging height categories on an ordinal scale (1 – fully arboreal, 2- scansorial, 3 - terrestrial). The second mammalins forgaing niche trait is the degree to which a species is fossorial on an ordinal scale (1 – not fossorial, 2- semi fossorial, 3 - fully fossorial). ). Activity time included five ordinal variables (1 - nocturnal, 2- nocturnal and crepuscular, 3- crepuscular or cathemeral, 4- diurnal and crepuscular, 5- diurnal). Note that not all assemblages were used for both taxa.
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