Comparative Ecology, Resource Utilization and Niche Segregation among Gekkonid Lizards in the Southern Kalahari
نویسنده
چکیده
Research was supported by American Philosophical Society grant 7113, by the Research Foundation of the State University of New York grant 20-7331-A and by funds from the Shenandoah Natural History Association. I am very grateful to Linda Jaeger and William Gergits for help in the field studies and to L. Jaeger for the computer programming involved. Douglas Fraser, W. Gergits and Patricia Nanartowich kindly criticized the manuscript. I thank E. Raymond Schaffner and Dennis Carter, of the National Park Service, for permission to work in Shenandoah National Park.
منابع مشابه
Notes on the Ecology and Natural History of the Rarely Recorded Gekkonid Lizard Heteronotia Binoei in the Great Victoria Desert of Western Australia
Ecological data on the uncommonly encountered terrestrial gecko Heteronotia binoei are presented and discussed. Although Heteronotia is widespread in Australia occurring in many different habitats, it is rarely found in semipristine desert habitats. Heteronotia is composed of a complex of both sexual and asexual populations which may help explain its rarity. Sex ratio is biased towards females....
متن کاملPatterns of Niche Overlap among Broadly Sympatric versus Narrowly Sympatric Kalahari Lizards (scincidae: Mabuya)'
Two semiarboreal skinks (Mabuya) are narrowly sympatric in the Kalahari desert, whereas two terrestrial species are broadly sympatric both with one another and with the semiarboreal species. We attempt to discern reasons for these differing distributional patterns. The narrow zone of sympatry of the semiarboreal species is partially congruent with zones of habitat change (rainfall and vegetatio...
متن کاملOptimal foraging constrains macroecological patterns: body size and dietary niche breadth in lizards
Aim To explore and identify probable mechanisms contributing to the relationships among body size, dietary niche breadth and mean, minimum, maximum and range of prey size in predaceous lizards. Location Our data set includes species from tropical rainforests, semi-arid regions of Brazil, and from deserts of the south-western United States, Australia and the Kalahari of Africa. Methods We calcul...
متن کاملNiche differences between two sympatric whiptail lizards (Cnemidophorus abaetensis and C. ocellifer, Teiidae) in the restinga habitat of northeastern Brazil.
Differences among sympatric lizard species usually result from differences in the use of three resources: space, time and food or some combination of these three. However, differences in resource utilization among sympatric species may simply reflect their specific ecological needs rather than competitive pressures. In this study, we analyzed the temporal, spatial and food niche of two congener...
متن کاملDiet overlap and spatial segregation between two neotropical marsupials revealed by multiple analytical approaches
Species co-existence depends on how organisms utilize their environment and resources. When two sympatric species are similar in some ecological requirements, their coexistence may arise from differences in resource use over time and/or space. Interactions among coexisting marsupials remain poorly understood, especially in the Neotropics. Here we combine spatial niche measurements, individual-r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007