Effects of habitat disturbance on the termite fauna in a 117 highland humid forest in the Caatinga domain, Brazil
Effects of habitat disturbance on the termite fauna in a 117 highland humid forest in the Caatinga domain, Brazil
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栖息地干扰对巴西卡廷加地区 117 高地湿润森林白蚁动物群的影响
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
R. Constantino
中科院分区：
文献类型：
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作者：
A. G. Bandeira;A. Vasconcellos;Moabe Pina da Silva;R. Constantino
白蚁在巴西布雷霍多斯卡瓦尔沃斯的六个不同栖息地取样，这是一个潮湿的常绿高原森林岛屿，周围是caatinga（干燥的稀树草原）。在每个生境取样一个200 × 10米的样带，分为20个10 × 10米的样地。由于生境的干扰，白蚁的多样性急剧减少，在一年生单一栽培条件下，白蚁未被发现。腐殖质摄食动物受影响最严重，其次是中等摄食动物。食木动物更有弹性，一些物种在次生林中更受欢迎，但它们也往往在很少或没有木材的农业场所消失。与亚马逊和北大西洋森林相比，布雷霍的白蚁动物群的多样性较低，这可能是栖息地受到干扰以及海拔和隔离程度的结果。这种动物群既有来自亚马逊森林的元素，也有来自大西洋森林的元素，但它与大西洋森林更相似。布雷乔斯目前承受着巨大的人类压力，保护这些地区迫在眉睫，因为它们是森林物种的避难所，似乎是地方性的中心。
Termites were sampled in six different habitats in the Brejo dos Cavalos, Brazil, an island of humid, evergreen, highland forest surrounded by caatinga (dry savanna). One transect of 200 x 10 m divided into 20 plots of 10x 10 m was sampled in each habitat. Diversity was drastically reduced by habitat disturbance, and no termite was found at the site under annual monoculture. The humus-feeders were more severely affected, followed by intermediate-feeders. Wood-feeders were more resilient and some species were favored in secondary forests, but they also tend to disappear in agricultural sites where there is little or no wood. The termite fauna at the brejo has a lower diversity when compared to the Amazon and northern Atlantic Forests, which may be a consequence of habitat disturbance as well as of altitude and degree of isolation. This fauna contains elements both from the Amazon and Atlantic Forests, but it is more similar to the latter. The brejos are currently under high human pressure and preservation of these areas is urgent, as they represent refuges for forest species and seem to be centers of endemicity.