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New Mexico State University (1978)

Species diversity of nocturnal rodents in disturbed desert-grassland habitats

Alberico, Michael Stephen

Titre : Species diversity of nocturnal rodents in disturbed desert-grassland habitats

Auteur : Alberico, Michael Stephen

Université de soutenance : New Mexico State University

Grade : Doctor of Philosophy (PhD) 1978

Résumé
Nocturnal rodent communities were sampled by live-trapping seasonally on seven sites on sandy soils on the USDA Jornada Experimental Range, Dona Ana County, New Mexico during 1975 and 1976. An attempt was made to contrast three current hypotheses concerning those factors which determine species diversity of small mammals. According to these, diversity should be higher in habitats which have 1) greater amounts of predictable precipitation and resources, 2) greater structural complexity, or 3) more mature successful status (i.e., less disturbed)... It was predicted that climax grassland habitats would support greater rodent species diversity than dis-climax shrublands. This was generally true, but substantial temporal variations in diversity weakened tests for statistical significance.

Mots Clés : community, disturbance, rodent, grassland, disturbed habitats, rodent, disturbed habitats, rodent, nocturnal, rodent, species diversity

Présentation (Jornada NMSU)

Page publiée le 31 janvier 2018