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A Linear Programming Model of Diet Choice of Free-Living Beavers

A Linear Programming Model of Diet Choice of Free-Living Beavers A LINEAR PROGRAMMING MODEL OF DIET CHOICE OF FREE-LIVING BEAVERS by BART A. NOLET1, PIETERJ. VAN DER VEER2, E.G.J. EVERS3 and MART M. OTTENHEIM4 (1 Institute for Forestry and Nature Research (IBN-DLO), P.O. Box 23, 6700 AA Wageningen, The Netherlands; 2 Zoological Laboratory, University of Groningen, P.O. Box 14, 9750 AA Haren, The Netherlands; 3 Dept. of Ecology, Catholic University of Njmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands; 4 Institute of Evolutionary and Ecological Sciences, State University Leiden, P.O. Box 9516, 2300 RA Leiden, The Netherlands) ABSTRACT Linear programming has been remarkably successful in predicting the diet choice of generalist herbivores. We used this technique to test the diet choice of free-living beavers (Castor fiber) in thc Biesbosch (The Netherlands) under different foraging goals, i.e. maximization of intake of energy, nitrogen, phosphorus or sodium, or minimization of feeding time. Three food types were distinguished, i.e. woody food, herbs and roots of monocots. We assessed forage quality by measuring the dry matter, energy and mineral contents of the food plants as well as food intake rates, digestibility and metabolisability in captive beavers. Actual diet was in accordance with the predicted food choice in the summer when the beavers were http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Netherlands Journal of Zoology (in 2003 continued as Animal Biology) Brill

A Linear Programming Model of Diet Choice of Free-Living Beavers

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Publisher
Brill
Copyright
© 1994 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2960
eISSN
1568-542X
DOI
10.1163/156854295X00339
Publisher site
See Article on Publisher Site

Abstract

A LINEAR PROGRAMMING MODEL OF DIET CHOICE OF FREE-LIVING BEAVERS by BART A. NOLET1, PIETERJ. VAN DER VEER2, E.G.J. EVERS3 and MART M. OTTENHEIM4 (1 Institute for Forestry and Nature Research (IBN-DLO), P.O. Box 23, 6700 AA Wageningen, The Netherlands; 2 Zoological Laboratory, University of Groningen, P.O. Box 14, 9750 AA Haren, The Netherlands; 3 Dept. of Ecology, Catholic University of Njmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands; 4 Institute of Evolutionary and Ecological Sciences, State University Leiden, P.O. Box 9516, 2300 RA Leiden, The Netherlands) ABSTRACT Linear programming has been remarkably successful in predicting the diet choice of generalist herbivores. We used this technique to test the diet choice of free-living beavers (Castor fiber) in thc Biesbosch (The Netherlands) under different foraging goals, i.e. maximization of intake of energy, nitrogen, phosphorus or sodium, or minimization of feeding time. Three food types were distinguished, i.e. woody food, herbs and roots of monocots. We assessed forage quality by measuring the dry matter, energy and mineral contents of the food plants as well as food intake rates, digestibility and metabolisability in captive beavers. Actual diet was in accordance with the predicted food choice in the summer when the beavers were

Journal

Netherlands Journal of Zoology (in 2003 continued as Animal Biology) – Brill

Published: Jan 1, 1994

Keywords: nutrition; re-introduction; Castor fiber; optimal foraging; The Netherlands

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