Habitat association and distribution of rodents and insectivores in Chebera Churchura National Park, Ethiopia
نویسنده
چکیده
The main objective of the study was to characterize the habitat composition and distribution of rodents and insectivores in a recently established Chebera Churchura National Park, Ethiopia. The study was carried out between 2010 and 2011. Study grids were marked in seven randomly selected habitats. Swampy forest, riverine forest, grassland, wooded grassland, bushland, lake shore, and agricultural field were identified. Forty nine Sherman live traps were used to capture the small mammals. A total of 704 individuals of rodents and insectivores were captured in 5488 trap-nights. These comprised 16 species of rodents, and 2 species of insectivores. The distribution of species varied among habitats. Mastomys natalensis was the most widely distributed species, whereas Crocidura flavescens was the least. The distribution pattern also varied along altitudinal gradients. The study revealed that habitat composition is a very important factor for species richness and distribution of rodents and insectivores in the park. Resumen: El objetivo principal delestudio fuecaracterizarla composición del hábitat y ladistribuciónde roedores einsectívoros en el recién establecido Parque Nacional Chebera Churchura, Etiopía. Elestudio se realizóen 2010 y 2011. Se marcaron retículas de estudio en siete hábitats seleccionados al azar: bosque de pantano, bosque ribereño, pastizal, pastizal arbolado, matorral, orilla de lago ycampo agrícola. Se usaron 49 trampas Sherman para la capturaren vivo de losmamíferos pequeños. Se capturaron en total 704 individuos de roedoreseinsectívorosen 5488 noches-trampa, las cuales abarcaron16 especies de roedoresydosde insectívoros. Ladistribuciónde lasespecies varióentre hábitats. Mastomys natalensis fue la especie con distribución más amplia, mientras que Crocidura flavescens fue la más restringida. El patrón dedistribución también varióa lo largo de los gradientes altitudinales.El estudio mostróque la composición del hábitat es un factor muy importante para la riqueza de especies y la distribución de roedores e insectívoros en el parque. Resumo: O principal objetivo do estudo foi caracterizar a composição do habitat ea distribuição de roedores e insectívoros no Parque Nacional Churchura Cheberarecém-criada, na Etiópia. O estudo foi realizado entre 2010 e 2011. Foram marcadas aleatoriamente quadrículas de estudo em sete habitats selecionados. Identificaram-se a floresta pantanosa, a mata ribeirinha, a pastagem, a pastagemarborizado, o matagal, apraia lacustre, e o campo agrícola. Foram utilizadas quarenta e nove armadilhas Sherman para capturar os pequenos mamíferos. Um total de 704 roedores e insectívoros foram capturados em 5488 noites de armadilhagem. Estes compreendiam 16 espécies de roedores e 2 espécies de insectívoros. A distribuição das espécies variou entre habitats. A Mastomys natalensis foi a espécie mais amplamente distribuída, enquanto a Crocidura flavescens foi a menos representada. O padrão de distribuição também variou ao longo dos gradientes de altitude. O estudo revelou que a composição do habitat é um fator muito importante para a riqueza específica e a distribuição de roedores e insectívoros no parque. *Corresponding Author; e-mail: [email protected] 222 HABITAT ASSOCIATION OF RODENTS AND INSECTIVORES
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تاریخ انتشار 2013