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Resource use patterns among mongoose...

Ray, Justina Coste.

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Resource use patterns among mongooses and other carnivores in a Central African rainforest.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Resource use patterns among mongooses and other carnivores in a Central African rainforest./
作者:	Ray, Justina Coste.
面頁冊數:	257 p.
附註:	Source: Dissertation Abstracts International, Volume: 57-09, Section: B, page: 5410.
Contained By:	Dissertation Abstracts International57-09B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9703599
ISBN:	9780591100839

Resource use patterns among mongooses and other carnivores in a Central African rainforest.
Ray, Justina Coste.

Resource use patterns among mongooses and other carnivores in a Central African rainforest. - 257 p.

Source: Dissertation Abstracts International, Volume: 57-09, Section: B, page: 5410.

Thesis (Ph.D.)--University of Florida, 1996.

Two years of research in the Dzanga-Sangha Reserve/Dzanga-Ndoki National Park in the Central African Republic provided ecological data on an assemblage of eight sympatric Carnivora (including three herpestids, three viverrids, and two felids) and their resources. The 28 km

ISBN: 9780591100839Subjects--Topical Terms:

1017726
Biology, Ecology.

Resource use patterns among mongooses and other carnivores in a Central African rainforest.
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245 1 0 $a Resource use patterns among mongooses and other carnivores in a Central African rainforest.
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500 $a Source: Dissertation Abstracts International, Volume: 57-09, Section: B, page: 5410.
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502 $a Thesis (Ph.D.)--University of Florida, 1996.
520 $a Two years of research in the Dzanga-Sangha Reserve/Dzanga-Ndoki National Park in the Central African Republic provided ecological data on an assemblage of eight sympatric Carnivora (including three herpestids, three viverrids, and two felids) and their resources. The 28 km $\ sp2 $ study area was a mosaic of habitats, including logged and unlogged forests, which demonstrated distinct differences in community composition of large ( $\ geq $1 0 cm DBH) and small ( $< $1 0 cm) trees, stem density (for both trees and lianas), basal area, species and family diversity, and vegetation structure (analyzed for both understory (0-10 m) and canopy cover). Small mammal trapping over 17,361 trap-nights resulted in the capture of 1,957 individuals of 15 species, 13 of which were rodents and two shrews. The species composition of the rodent community indicated a relatively undisturbed habitat. In mixed-species unlogged forest, the ratio of Hylomyscus:Praomys was high, Deomys was abundant, and species characteristic of savannah edge habitats were absent. Highest levels of rodent abundance and diversity were attained in secondary forest; detailed analyses of trap-sites where rodent species were captured demonstrated that dense understory was important for most species. Repeated sampling during three seasons over two years also yielded important differences in population levels of all species in this highly seasonal forest. Although seasonality in breeding activity was evident, inter-year differences in population densities were even more significant. Radio-tracking of five long-nosed mongooses (Herpestes (Xenogale) naso) and one marsh mongoose (Atilax paludinosus) revealed clear separation in activity, habitat use, and movement patterns. A detailed analysis of predation on small mammals by Herpestes naso and other carnivores indicated a highly diverse prey base, including 16 species of shrews. Analyses of selective predation on rodent species for which population densities could be estimated indicated a tendency for small carnivores to select species inhabiting areas with relatively dense understories or large amounts of fallen timber. Interestingly, not only was the incidence of predation on shrews unusually high (as judged by an extensive literature survey), but monthly frequencies of rodent remains in the scats closely mirrored shrew frequencies. Of the 1,066 carnivore scats collected, 666 (62%) were identified using seven techniques, including the analysis of bile acid patterns via thin-layer-chromatography, Detailed identification of mammalian, arthropod, herpetofauna, fish, fruit, and bird contents in scats revealed clear dietary separation between most of the eight species in the community. Those species that experienced a relatively high degree of overlap in the diet were the most likely to exhibit differing habitat use or activity patterns. The diets of all species were diverse, but two species (Atilax paludinosus and Civettictis civetta) were relatively specialized by virtue of their restricted use of habitat. Arthropods dominated the scats of all species except the two felids (Profelis aurata and Panthera pardus), which were specialists on mammalian prey. It is suggested that the maintenance of this highly diverse carnivore community was facilitated by the breadth of the resource base, marked degree of microhabitat heterogeneity, and high levels of abundance, or high rates of renewability in some prey groups.
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650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Zoology. $3 1018632
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