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Titolo:
Energy and protein balance of free-ranging black-tailed deer in a natural forest environment
Autore:
Parker, KL; Gillingham, MP; Hanley, TA; Robbins, CT;
Indirizzi:
Univge, British Columbia, Fac Nat Resources & Environm Studies, Prince Geor Univ No British Columbia Prince George BC Canada V2N 4Z9 ies, Prince Geor US1Forest Serv, USDA, Pacific NW Res Stn, Forestry Sci Lab, Juneau, AK 9980 US Forest Serv Juneau AK USA 99801 Stn, Forestry Sci Lab, Juneau, AK 9980 Washington State Univ, Dept Nat Resource Sci, Pullman, WA 99164 USA Washington State Univ Pullman WA USA 99164 rce Sci, Pullman, WA 99164 USA Washington State Univ, Dept Zool, Pullman, WA 99164 USA Washington State Univ Pullman WA USA 99164 pt Zool, Pullman, WA 99164 USA
Titolo Testata:
WILDLIFE MONOGRAPHS
fascicolo: 143, , anno: 1999,
pagine: 5 - 48
SICI:
0084-0173(199901):143<5:EAPBOF>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
ODOCOILEUS-HEMIONUS-SITKENSIS; CERVUS-ELAPHUS-NELSONI; INDIVIDUAL-BASED MODEL; LABELED WATER METHOD; MULE DEER; SOUTHEAST ALASKA; FORAGING EFFICIENCY; WESTERN HEMLOCK; CARRYING-CAPACITY; NUTRITIONAL BASIS;
Keywords:
Alaska; black-tailed deer; deer; double-labeled water; energy balance; energy expenditure; energy intake; nutrition; Odocoileus hemionus; protein balance; protein intake;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
115
Recensione:
Indirizzi per estratti:
Indirizzo: Parker, KL Univge, British Columbia, Fac Nat Resources & Environm Studies,Prince Geor Univ No British Columbia Prince George BC Canada V2N 4Z9 Geor
Citazione:
K.L. Parker et al., "Energy and protein balance of free-ranging black-tailed deer in a natural forest environment", WILDL MON, (143), 1999, pp. 5-48

Abstract

The purpose of this study was to quantitatively examine the validity of conclusions derived from reductionist studies of nutritional ecology of black-tailed deer. We measured protein and energy intake, activity budgets, and changes in body mass of free-ranging animals in a natural forest environment in relation to availability and nutritional quality of forage and environmental constraints (snow, temperature) over a 2-year period. We compared those observations of intake with modeled predictions of requirements. Daily protein intake remained above demands during all months of the year except February, whereas deer were unable to meet energy requirements for more than half the year. Compounded by increased demands associated with lactation during summer and with snow rather than temperature during winter, the availability of digestible energy is potentially the greatest nutritional limiting factor for black-tailed deer in Alaska. Changes in body mass were directly related to the ratio of energy intake to requirement. Body reserves accumulated during summer with abundant digestible energy were critical to winter survival. Reductionist studies of nutritional and physiological processes provided a strong mechanistic basis for understanding and predicting animal-habitat interactions in a natural environment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 14:22:55