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Latitude, elevation and body mass variation in Andean passerine birds
1 Relationships between body mass and latitude, and body mass and elevation are examined in the assemblage of Andean passerine birds. 2 Across species, body mass is positively correlated with… Expand
One-dimensional analyses of Rapoport's rule reviewed through meta-analysis
Aim To analyse quantitatively the extent to which several methodological, geographical and taxonomic variables affect the magnitude of the tendency for the latitudinal ranges of species to increase… Expand
Why do mountains support so many species of birds
Although topographic complexity is often associated with high bird diversity at broad geographic scales, little is known about the relative contributions of geomorphologic heterogeneity and… Expand
Environmental correlates of mammal species richness in South America: effects of spatial structure, taxonomy and geographic range
Although some consensus exists regarding the positive synergism between energy and heterogeneity in increasing species diversity, the role of environmental variability remains controversial. We… Expand
Coefficient shifts in geographical ecology: an empirical evaluation of spatial and non-spatial regression
A major focus of geographical ecology and macroecology is to understand the causes of spatially structured ecological patterns. However, achieving this understanding can be complicated when using… Expand
The geographic ranges of mammalian species in South America: spatial patterns in environmental resistance and anisotropy
We analyse the geographical distribution of South American mammalian species using two biogeographic indices: environmental resistance (R50) and anisotropy (A50). R50 quantifies the loss of biotic… Expand
Quality of basic data and method to identify shape affect richness-altitude relationships in meta-analysis.
We compiled 109 species richness-altitude (SRA) relationships in arthropods to test the hypothesis that identification of shape and robustness of pattern are contingent on the selection of studies… Expand
Plant species richness–environment relationships across the Subantarctic–Patagonian transition zone
Aim To evaluate the relative importance of climate, productivity, environmental heterogeneity, biotic associations and habitat use by cattle to account for the species richness of trees, shrubs and… Expand
Latitudinal decrease in folivory within Nothofagus pumilio forests: dual effect of climate on insect density and leaf traits?
Aim The strength of consumer–plant interactions may decrease with latitude. Our objectives were to assess the spatial variation in folivory on Nothofagus pumilio and understand the influence of… Expand
Environmental rugosity, body size and access to food: a test of the size-grain hypothesis in tropical litter ants
Farji-Brener, A. G., Barrantes, G. and Ruggiero, A. 2004. Environmental rugosity,body size and access to food: a test of the size-grain hypothesis in tropical litter ants.– Oikos 104: 165–171.In… Expand