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Titolo:
EFFECTS OF ROOT PLOWING ON WHITE-TAILED DEER CONDITION, POPULATION STATUS, AND DIET
Autore:
RUTHVEN DC; HELLGREN EC; BEASOM SL;
Indirizzi:
TEXAS A&M UNIV KINGSVILLE,CAESAR KLEBERG WILDLIFE RES INST,CAMPUS BOX218 KINGSVILLE TX 78363
Titolo Testata:
The Journal of wildlife management
fascicolo: 1, volume: 58, anno: 1994,
pagine: 59 - 70
SICI:
0022-541X(1994)58:1<59:EORPOW>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOUTH TEXAS; DEFENDING PLANTS; MULE DEER; RUMINANTS; TANNINS; REDUCTION; SAVANNA; CATTLE; BROWSE; FIBER;
Keywords:
CONDITION INDEXES; DIET; ODOCOILEUS-VIRGINIANUS; POPULATION; ROOT PLOWING; TEXAS; WHITE-TAILED DEER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
D.C. Ruthven et al., "EFFECTS OF ROOT PLOWING ON WHITE-TAILED DEER CONDITION, POPULATION STATUS, AND DIET", The Journal of wildlife management, 58(1), 1994, pp. 59-70

Abstract

Determining the effects of plant community changes on animal populations is an important area of ecological research. We compared condition, population characteristics, and diet composition of white-tailed deer (Odocoileus virginianus) from 2 root-plowed (low brush diversity) and 2 untreated (high brush diversity) sites in the eastern Rio Grande Plains of Texas to test the hypothesis that root plowing, which decreases woody species diversity, reduced deer habitat quality. We collected8 adult female white-tailed deer from each site every 3 months for 6 sampling periods. We assessed condition from several physiological, reproductive, and digestive indices and determined food habits by microhistological analysis of rumen samples. We estimated population size from helicopter surveys. There were no differences (P > 0.1) between high- and low-diversity sites in deer density, fawn production, age, mass, reproductive characteristics, ruminal nitrogen and neutral detergentfiber, and fat, blood, and urine indices. There was a fecal nitrogen treatment by season interaction (P < 0.05). Blood, urine, fat, digestive, and ovarian indices varied seasonally (P < 0.05). Four nitrogen indices provided conflicting information on population protein status. Therefore, data on diet composition were necessary for index interpretation. Percent browse in the diet was greater (P < 0.10) in untreated sites. Browse, forb, and grass use varied seasonally (P < 0.05). Yearlydifferences in precipitation were associated with changes in body condition, reproduction, and diet. Nutritional condition and population status of white-tailed deer were similar in untreated sites and sites root plowed 17 years earlier. In treated sites, the greater abundance of forbs and huisache (Acacia smallii) mast offset the effects of decreases in browse diversity on deer biology. We recommend further work onthe effects of brush management on wildlife communities.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 15:16:25