Body size and area‐incidence relationships: is there a general pattern?

Biedermann, Robert

doi:10.1046/j.1466-822x.2003.00048.x

Cited by 44 publications

(39 citation statements)

References 43 publications

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“…Many of these life-history attributes (e.g. home range size, dispersal distance and body size) are known to be correlated (Biedermann, 2003;Bowman, 2003) but are independent and significantly variable between different species to warrant treating them separately.…”

Section: Discussionmentioning

confidence: 99%

Avian life‐history determinants of local extinction risk in a hyper‐fragmented neotropical forest landscape

Lees

Peres

2008

Animal Conservation

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The fact that species vary in their vulnerability to extinction is well documented, but the reasons for these differences remain poorly understood. Why should some species/families/guilds decline rapidly with increasing anthropogenic disturbance, while others either tolerate or proliferate in disturbed habitats? We investigated the bird species composition in 31 primary forest patches of varying size in a region of the Amazonian 'Arc of Deforestation' and assessed which species life-history traits predisposed individual species to extinction. Medium-sized non-flocking canopy frugivores/ominvores of low primary forest dependence were least likely to go extinct in small patches, while small-bodied flock-following primary-forest-dependent terrestrial insectivores were most fragmentation sensitive. We found highly idiosyncratic relationships between the minimum size of forest patches occupied by different species and their territory size requirements estimated based on other Amazonian studies. This suggests that avian assemblages in forest fragments primarily comprise species that either have good dispersal abilities or are highly tolerant to the non-forest matrix, rather than those whose minimum spatial requirements can be met by the size of available forest fragments.

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Section: Discussionmentioning

confidence: 99%

Avian life‐history determinants of local extinction risk in a hyper‐fragmented neotropical forest landscape

Lees

Peres

2008

Animal Conservation

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“…Among species, variation in home range size is strongly related to body size (McNab 1963;Biedermann 2003). Among individuals, variation in home range size may be influenced by food availability and competition (Ebersole 1980), predation risk (Lima and Dill 1990), cover (Tufto et al 1996), and differences among individuals (Börger et al 2006b).…”

Section: Introductionmentioning

confidence: 99%

Behavior‐Based Scale Definitions for Determining Individual Space Use: Requirements of Two Amphibians

Indermaur¹,

Gehring²,

Wehrle³

et al. 2009

The American Naturalist

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Understanding individual space use remains a major issue in ecology, and it is complicated by definitions of spatial scale and the interplay of multiple factors. We quantified the effect of habitat and biotic and individual factors on space use by amphibians (Bufo bufo spinosus [BB] and Bufo viridis [BV]) that were radio-tracked in their terrestrial summer habitat. We analyzed two spatial scales, 50% core areas and 95% home ranges (excluding 50% core areas), thought to represent resting and foraging areas, respectively. The 50% core area of BB was best explained by habitat structure and prey density, whereas the 50% core area of BV was determined solely by habitat structure. This suggests that the resting and foraging areas of BB are not spatially separated. The 95% home range of BB was determined by prey density, while for BV both habitat structure and prey density determined home range size. We conclude that the terrestrial area requirements of amphibians depend on the productivity and spatiotemporal complexity of landscapes and that differential space use may facilitate their co-occurrence. Behavior-based a priori hypotheses, in combination with an information-theoretic approach and path analyses, provide a promising framework to disentangle factors that govern individual space use, thereby advancing home range studies. [BV]) that were radiotracked in their terrestrial summer habitat. We analyzed two spatial scales, 50% core areas and 95% home ranges (excluding 50% core areas), thought to represent resting and foraging areas, respectively. The 50% core area of BB was best explained by habitat structure and prey density, whereas the 50% core area of BV was determined solely by habitat structure. This suggests that the resting and foraging areas of BB are not spatially separated. The 95% home range of BB was determined by prey density, while for BV both habitat structure and prey density determined home range size. We conclude that the terrestrial area requirements of amphibians depend on the productivity and spatiotemporal complexity of landscapes and that differential space use may facilitate their co-occurrence. Behavior-based a priori hypotheses, in combination with an information-theoretic approach and path analyses, provide a promising framework to dis-

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“…In general, certain life-history traits are predicted to make species more vulnerable (15), such as having a small niche breadth (e.g., a specialized diet; 16). However, predictions for some other traits such as body size have resulted in contrasting predictions (17,18). In bees, additional traits such as nest site location and brood parasitism or sociality also determine a species' response to environmental change (19)(20)(21).…”

mentioning

confidence: 99%

Historical changes in northeastern US bee pollinators related to shared ecological traits

Bartomeus

Ascher

Gibbs

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

445

425

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Pollinators such as bees are essential to the functioning of terrestrial ecosystems. However, despite concerns about a global pollinator crisis, long-term data on the status of bee species are limited. We present a long-term study of relative rates of change for an entire regional bee fauna in the northeastern United States, based on >30,000 museum records representing 438 species. Over a 140-y period, aggregate native species richness weakly decreased, but richness declines were significant only for the genus Bombus. Of 187 native species analyzed individually, only three declined steeply, all of these in the genus Bombus. However, there were large shifts in community composition, as indicated by 56% of species showing significant changes in relative abundance over time. Traits associated with a declining relative abundance include small dietary and phenological breadth and large body size. In addition, species with lower latitudinal range boundaries are increasing in relative abundance, a finding that may represent a response to climate change. We show that despite marked increases in human population density and large changes in anthropogenic land use, aggregate native species richness declines were modest outside of the genus Bombus. At the same time, we find that certain ecological traits are associated with declines in relative abundance. These results should help target conservation efforts focused on maintaining native bee abundance and diversity and therefore the important ecosystems services that they provide.bee declines | global change | pollination

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Body size and area‐incidence relationships: is there a general pattern?

Cited by 44 publications

References 43 publications

Avian life‐history determinants of local extinction risk in a hyper‐fragmented neotropical forest landscape

Avian life‐history determinants of local extinction risk in a hyper‐fragmented neotropical forest landscape

Behavior‐Based Scale Definitions for Determining Individual Space Use: Requirements of Two Amphibians

Historical changes in northeastern US bee pollinators related to shared ecological traits

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