Seasonal variation in populations of panamanian litter frogs and their prey: A comparison of wetter and drier sites
Seasonal variation in populations of panamanian litter frogs and their prey: A comparison of wetter and drier sites
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巴拿马幼蛙及其猎物种群的季节变化：潮湿和干燥地点的比较
DOI：
10.1007/bf00541772
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发表时间：
2004
期刊：
影响因子：
2.7
通讯作者：
C. Toft
中科院分区：
文献类型：
--
作者：
C. Toft
在帕纳马热带雨林的落叶层中，分布着蟾蜍属、Atelopus属、Dendrobates属、Colostethus属和Eleutherodactylus属的各种青蛙和蟾蜍。本研究比较了帕纳马两个地点的凋落物群落：管道路，干燥的网站，和Carti路，潮湿的网站。在这两个地点，青蛙的丰度在旱季更大，当他们的猎物，垃圾节肢动物的丰度更大。物种多样性不随季节变化，在任何一个网站，但是，物种多样性显着不同的网站之间，与Carti路有更大的物种多样性。饮食的相似性并不总是随着单一地点食物丰富度的季节性变化或不同地点之间物种多样性的差异而变化。这些结果表明，无论是水分还是食物丰富度单独影响的丰富度或在这两个网站在帕纳马的垃圾蛙的多样性。
Various species of frogs and toads, belonging to the generaBufo, Atelopus, Dendrobates, Colostethus, andEleutherodactylus, occur in the leaf litter in rainforest in Panamá. This study compares the litter communities at two sites in Panamá: Pipeline Road, the drier site, and Carti Road, the wetter site. At both sites, frog abundance is greater in the dry season, when abundance of their prey, the litter arthropods, is greater. Species diversity does not change seasonally at either site; however, species diversity differs strikingly between sites, with Carti Road having the greater species diversity. Similarity in diet does not vary consistently with seasonal changes in food abundance at a single site or with differences in species diversity between sites. These results suggest that neither moisture nor food abundance alone influences the abundance or the diversity of litter frogs at these two sites in Panamá.