Diversity and distribution of amphibians and reptiles in the Caramoan Island Group, Maqueda Channel, Southern Luzon, Philippines

Diversity and distribution of amphibians and reptiles in the Caramoan Island Group, Maqueda Channel, Southern Luzon, Philippines
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菲律宾吕宋岛南部马克达海峡卡拉莫安岛群两栖类和爬行动物的多样性和分布

DOI:
10.1016/j.japb.2020.11.005
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发表时间:
2021
影响因子:
0.8
通讯作者:
Brown, Rafe M.
Brown, Rafe M.
中科院分区:
--
文献类型:
--
作者:
Clores, Michael A.;Bautista, Joward B.;Fernandez, Jason B.;Cuesta, Michael A.;Brown, Rafe M.

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首次报道了菲律宾吕宋岛南部马奎达海峡卡拉莫岛群两栖爬行动物的生物多样性。在吕宋岛南部比科尔半岛东北海岸外的CIG的9个地点,采用标准的实地调查方法,进行了两栖动物生物多样性评估。CIG的总体物种丰富度为22(3种两栖动物,12种蜥蜴和7种蛇),代表了各种本地物种的新岛屿记录,其中10种是菲律宾特有的。Beta多样性CIG的β多样性为0.84,反映了在对样地比较进行量化时物种的局部更新程度较高;这一发现很可能反映了栖息地的变异性,这与我们的观察结果一致,即强调高比例的动物多样性与非常特定的微栖息地有关,或局限于非常特定的微栖息地(石灰岩地区、低山森林、红树林、海滩沿海森林等)。群岛的整体群落相似性指数为0.545,这意味着CIG有中度重叠的两栖类和爬行类物种组成。我们的研究结果提供了基线信息的独特组成的CIG,这突出了一般缺乏知识的半岛的herpetofaunal多样性的两栖动物。
We report for the first time the herpetological biodiversity (amphibians and reptiles) of the Caramoan Island Group (CIG), Maqueda Channel, southern Luzon Island, the Philippines. Herpetofaunal biodiversity assessment, using the standard field-based methodology for survey work, was conducted at nine sites in the CIG, off the northeast coast of the Bicol Peninsula of southern Luzon. The overall species richness (s) in the CIG is 22 (three amphibians, 12 lizards, and seven snakes) represent new island records for a variety of the native species, ten of which are endemic to the Philippines. Beta diversity (β-diversity) of the CIG is 0.84 reflecting a relatively high degree of local area turnover of species when among-site comparisons were quantified; this finding most likely reflects habitat variability which is consistent with our observation emphasizing how a high proportion of faunal diversity is associated with, or confined, to very specific microhabitats (limestone areas, lower-montane forests, mangroves, beach coastal forests, etc.). The overall community similarity index of the archipelago was 0.545 implying that CIG has moderate overlap of amphibian and reptilian species composition. Our findings provide baseline information on the unique composition of herpetofauna in the CIG, which highlights a general paucity of knowledge about the Peninsula’s herpetofaunal diversity.
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