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Morphometrics of mid-Atlantic dabbling ducks for use in thermoregulation models

Authors :
Matthew T. Dibona
John M. Coluccy
Christopher K. Williams
Mark C. Livolsi
Source :
The Condor. 117:644-649
Publication Year :
2015
Publisher :
Oxford University Press (OUP), 2015.

Abstract

Bioenergetics modeling is a popular tool used by waterfowl biologists to estimate carrying capacity based on food energy availability and daily energy expenditure (DEE). For wintering waterfowl, estimates of DEE may incorporate a cost of thermoregulation (CT) component, which accounts for metabolic heat production when ambient temperatures fall below a species-specific Lower Critical Temperature (LCT). Typically, DEE estimates have utilized either a fixed CT component or a simple CT model based solely on the magnitude of the difference between ambient temperature and LCT. Using a more complex CT model that accounts for differential heat loss from individual body regions due to temperature, wind speed, and contact with air or water may provide more detailed estimates of CT and, in turn, carrying capacity. However, such models required detailed morphometrics as model inputs in addition to environmental data. We present morphometrics for 8 dabbling duck species for use in thermoregulation models, as...

Details

ISSN :
19385129 and 00105422
Volume :
117
Database :
OpenAIRE
Journal :
The Condor
Accession number :
edsair.doi...........820d76ded86e044655974cc478663c49
Full Text :
https://doi.org/10.1650/condor-15-63.1