Abrupt species loss of the Amazonian dung beetle in pastures adjacent to species-rich forests
Abrupt species loss of the Amazonian dung beetle in pastures adjacent to species-rich forests
复制标题
物种丰富的森林附近牧场中亚马逊粪甲虫的物种突然消失
DOI：
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发表时间：
2017
影响因子：
1.9
通讯作者：
F. Vaz
中科院分区：
文献类型：
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作者：
Ricardo J. Silva;Tatiane D. Pelissari;D. Krinski;G. Canale;F. Vaz
人为干扰，例如将森林转变为牧场，被认为是亚马逊生物多样性丧失的主要原因之一。对于不适应开阔地区不利条件的森林物种来说，牧场是一个充满敌意的环境。本研究的目的是以粪甲虫（金龟子科：Scarabaeinae）为指标，分析亚马逊雨林东北部的牛牧场替代森林的影响。因此，我们确定了森林和邻近牛牧场之间粪甲虫物种丰富度、组成和丰度的边缘效应和差异。共采集粪甲虫63种6723只。与森林相比，邻近牧场的粪甲虫数量明显较少且丰富。森林有6604个体、59种；牧场有119个体、12种。牧场取代森林导致粪甲虫物种更替增加。只有 12% 的粪甲虫物种是森林和牧场环境共有的。我们强调，大多数亚马逊粪甲虫是森林物种，对人类驱动的栖息地突然改变敏感，并且仅受到边缘效应的中等影响。
Anthropogenic disturbances, such as conversion of forests to pastures, are considered one of the major causes of Amazonian biodiversity loss. Pastures are hostile environments for forest species that are not adapted to the adverse conditions of open areas. The aim of this study was to analyze the effects of forest replacement by cattle pastures in the north-eastern part of the Amazonian rainforest using dung beetles (Scarabaeidae: Scarabaeinae) as indicators. Therefore, we determined edge effects and differences in dung beetle species richness, composition, and abundance between forest and neighbouring cattle pastures. A total of 6723 individuals of 63 species of dung beetle were collected. In comparison to forests, adjacent pastures were sharply less rich and abundant in dung beetles. The forests had 6604 individuals and 59 species, while the pastures had 119 individuals and 12 species. The replacement of forests by pastures results in an increase of dung beetle species turnover. Only 12% of dung beetle species were shared by both forest and pasture environments. We highlight that most Amazonian dung beetles are forest species sensitive to abrupt human-driven modification of habitats and are only moderately affected by edge effects.