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Titolo:
Stochastic recruitment in white-tailed deer along an environmental gradient
Autore:
Ginnett, TF; Young, ELB;
Indirizzi:
Texas A&M Univ, Texas Agr Expt Stn, Uvalde, TX 78801 USA Texas A&M Univ Uvalde TX USA 78801 xas Agr Expt Stn, Uvalde, TX 78801 USA Texas Parks & Wildlife Dept, Kerrville, TX 78028 USA Texas Parks & Wildlife Dept Kerrville TX USA 78028 errville, TX 78028 USA
Titolo Testata:
JOURNAL OF WILDLIFE MANAGEMENT
fascicolo: 3, volume: 64, anno: 2000,
pagine: 713 - 720
SICI:
0022-541X(200007)64:3<713:SRIWDA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
NATURAL-POPULATIONS; MOUNTAIN SHEEP; LAMB SURVIVAL; NATIONAL-PARK; SOUTH TEXAS; FIRE ANTS; DENSITY; FAWNS; HERBIVORE; MORTALITY;
Keywords:
environmental stochasticity; Odocoileus virginianus; precipitation; recruitment; Texas; white-tailed deer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
60
Recensione:
Indirizzi per estratti:
Indirizzo: Ginnett, TF Texas A&M Univ, Texas Agr Expt Stn, 1619 Garner Field Rd, Uvalde, TX 78801USA Texas A&M Univ 1619 Garner Field Rd Uvalde TX USA 78801 801USA
Citazione:
T.F. Ginnett e E.L.B. Young, "Stochastic recruitment in white-tailed deer along an environmental gradient", J WILDL MAN, 64(3), 2000, pp. 713-720

Abstract

Texas encompasses a strong precipitation gradient from arid deserts (<370 mm) in the west to mesic pine forests (>1,300 mm) in the east. We examined the relationship between fawn recruitment in white-tailed deer (Odocoileus virginianus), as estimated by fall census data, and same-year precipitationalong this environmental gradient. Census data for the years 1977-95 were obtained from the Texas Parks and Wildlife Department. Precipitation data covering the same period were obtained from the National Oceanographic and Atmospheric Administration for every official recording station in the state. Data were summarized by 8 precipitation zones, followed by exploratory regression analyses that revealed a changing pattern in recruitment along theprecipitation gradient. The best model was a simple linear regression thatincorporated the sum of March-July precipitation as the independent variable and recruitment expressed as fawns per 100 does as the dependent variable. In arid western Texas, recruitment was strongly and positively related to March-July precipitation totals. Moving eastward, regression slopes declined as precipitation totals increased. In eastern Texas, regression slopes indicated a negative relationship between recruitment and precipitation. Long-term average recruitment across precipitation zones is negatively correlated with long-term average precipitation. We suggest various causal explanations for these relationships.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 06:54:19