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Accueil du site → Master → Etats Unis → 2015 → Diurnal patterns in the spatial distribution of female desert bighorn sheep (Ovis canadensis mexicana)

New Mexico State University (2015)

Diurnal patterns in the spatial distribution of female desert bighorn sheep (Ovis canadensis mexicana)

Forney, Ronny

Titre : Diurnal patterns in the spatial distribution of female desert bighorn sheep (Ovis canadensis mexicana)

Auteur : Forney, Ronny

Université de soutenance : New Mexico State University

Grade : M.A.G. —Geography 2015

Résumé
Desert bighorn sheep are affected by naturally occurring factors present in their environment as well as anthropogenic activity. One ecological factor that affects desert bighorn distribution is topography of the terrain. Studies on the diurnal activities of desert bighorn sheep, particularly in relation to topography of the terrain, are few. A better understanding of desert bighorn sheep distribution may aid in protecting its habitat. This research examined whether there were significant differences in elevation, slope, aspect, profile, and planform of desert bighorn sheep locations stratified by the time of day, for six females. I modeled the terrain using a Digital Elevation Model, overlaid with GIS-based presence data. I employed t-tests, MANOVA, and Repeated Measures ANOVA to compare the means of multiple groups of variables. The statistical tests showed significant diurnal differences, and the visual analyses showed more variability in female desert bighorn sheep topographical locations. The results did not support the null hypothesis — that there is no difference in diurnal patterns of desert bighorn sheep females in relation to topography.

Sujets : Desert bighorn sheep—Habitat. Desert bighorn sheep—Geographical distribution. Landforms.

Présentation (NMSU Library)

Page publiée le 5 mars 2016, mise à jour le 25 décembre 2019