ID:
publications-78
Type:
PEER REVIEWED ARTICLE
Year:
2012
Authors:
Basset, A.
Title:
A unifying approach to allometric scaling of resource ingestion rates under limiting conditions.
Venue/Journal:
DOI:
10.1890/es11-00249.1
Research type:
Uncategorized
Water System:
Groundwater
Technical Focus:
Abstract:
Individual resource ingestion rates depend on both individual body size and resource supply. A component of the latter, namely resource availability, is also bodyâsize dependent. This raises the question of the adequacy of simple scaling laws to describe the bodyâsize dependency of resource ingestion. Here we propose a model which integrates resource ingestion drivers by merging a scaling law for feeding metabolism and Holling's functional responses into a single mathematical framework. At any fixed level of resource supply, the model predicts a logâlog concaveâdown relationship between resource ingestion rates and body size, rather than a simple scaling law. Deviations from the latter are accounted for by the body size dependency of resource limitations. Experimental and literature data describing patterns of perceived resource availability and individual intake rates under limiting conditions with increasing individual body size are used to validate the model's assumptions and predictions. The model incorporates and extends wellâestablished theoretical approaches and is intended as a step towards the integration of metabolic theory with behavioral ecology and population dynamics.
Link with Projects:
226273
Link with Tools:
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