- hunting
- grazing
- filter feeding
- root growth
- enzyme secretion
- prey capture
- digestion
- pumping
- ventilation
- searching and foraging
Operational definition
Allocation function.
Energy expended to locate, expose, capture, ingest, digest, transport, or absorb resources.
Examples include:
- foraging;
- hunting;
- filtration;
- root growth;
- digestive pumping;
- enzyme secretion;
- ventilation;
- prey handling;
- active nutrient transport.
This category records the cost of obtaining the resource, not the energy content of the resource itself.