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The size–grain hypothesis and interspecific scaling in ants
1. The size–grain hypothesis maintains that as terrestrial walking organisms decrease in size, their environment becomes less planar and more rugose. The benefits of long legs (efficient, speedyExpand
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Multiple nutrients limit litterfall and decomposition in a tropical forest.
To explore the importance of 12 elements in litter production and decomposition, we fertilized 36 1600 m(2)-plots with combinations of N, P, K, or micronutrients (i.e. B, Ca, Cu, Fe, Mg, Mn, Mo, S,Expand
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Energy, Density, and Constraints to Species Richness: Ant Assemblages along a Productivity Gradient
Species richness describes the number of species of a given taxon in a given time and space. The energy limitation hypothesis links the species richness of consumer taxa to net primary productivityExpand
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Potassium, phosphorus, or nitrogen limit root allocation, tree growth, or litter production in a lowland tropical forest.
We maintained a factorial nitrogen (N), phosphorus (P), and potassium (K) addition experiment for 11 years in a humid lowland forest growing on a relatively fertile soil in Panama to evaluateExpand
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On the biogeography of salt limitation: A study of ant communities
Sodium is an essential nutrient whose deposition in rainfall decreases with distance inland. The herbivores and microbial decomposers that feed on sodium-poor vegetation should be particularlyExpand
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Testing resource-based models of patchiness in four Neotropical litter ant assemblages
In four Neotropical forests I studied how resource availability affected patchiness in litter ants, colonies of about 100 workers living in hollow twigs. At the regional scale, and contrary toExpand
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Ecological morphospace of New World ants
Abstract.  1. Here the quantitative relationships between ecology, taxonomy, and morphology of ant workers are explored. The morphospace for worker ants taken from 112 genera and 12 subfamilies ofExpand
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Thermal adaptation generates a diversity of thermal limits in a rainforest ant community.
The Thermal Adaptation Hypothesis posits that the warmer, aseasonal tropics generates populations with higher and narrower thermal limits. It has largely been tested among populations acrossExpand
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Three energy variables predict ant abundance at a geographical scale
Energy theory posits three processes that link local abundance of ectotherms to geographical gradients in temperature. A survey of 49 New World habitats found a two order of magnitude span in theExpand
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Colony Size as a Buffer Against Seasonality: Bergmann's Rule in Social Insects
In eusocial species, the size of the superorganism is the summed sizes of its component individuals. Bergmann's rule, the cline of decreasing size with decreasing latitude, applies to colony size inExpand
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