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The anurofauna of a vanishing savanna: the case of the Brazilian Cerrado
Biodiversity and Conservation ( IF 3.0 ) Pub Date : 2017-11-18 , DOI: 10.1007/s10531-017-1468-8
Joana Ribeiro , Guarino R. Colli , Amadeu M. V. M. Soares

The second largest biome in Brazil, the Cerrado has been transformed into a highly mechanized and intensive agricultural area, with little public opposition. The native anurofauna is rich in species number and endemisms, but has long been regarded as a generalist community originated from neighboring biomes. The accelerated degradation of Cerrado habitats caused by agriculture is bound to affect local anuran communities. This review aims to investigate the effects of anthropogenic activities on local amphibians. Despite a clear paucity, the existing studies indicate that, while this community may be more resilient to some anthropogenic activities (e.g. fire) than their forest counterparts, agricultural environments are strongly dominated by generalist species. Susceptibility to agro-cattle land-uses appears to be determined by specializations, especially regarding habitat and breeding strategies. Natural vegetation fragments are important for maintaining diverse anuran communities in agroecosystems. Agrochemicals cause histopathologic alterations and potential decreased fitness. Chytridiomycosis has been recorded in species extant in the biome, including endemics. The anurofauna appears to be especially sensitive to hydroelectric dams, as even previously common, widespread and generalist species declined or disappeared after dam flooding. Latest predictions indicate the occupation of the Cerrado will proceed northward, which, coupled with climate change, will cause great loss of biodiversity. Only a small portion of suitable natural habitats will remain in northern Cerrado, with amphibian richness being reduced to less than half. We conclude that less popular biomes may benefit from trait-oriented reviews to assess and guide future scientific and conservation projects.



中文翻译:

消失的稀树草原的动物群:以巴西的塞拉多为例

塞拉多(Cerrado)是巴西第二大生物群落,已转变为高度机械化和集约化的农业地区,公众对此几乎没有反对。原生动物动物具有丰富的物种数量和特有性,但长期以来一直被认为是起源于邻近生物群落的通才群落。由农业引起的塞拉多栖息地的加速退化势必会影响当地的无脊椎动物社区。这篇综述旨在调查人为活动对当地两栖动物的影响。尽管缺乏明确证据,但现有研究表明,尽管该社区对某些人为活动(例如火)的抵抗力可能比森林同行强,但农业环境却被通才种所主导。农用牛土地利用的敏感性似乎由专业来决定,特别是关于栖息地和繁殖策略。天然植被碎片对于维持农业生态系统中的各种无色生物很重要。农用化学品会引起组织病理学改变,并可能降低健康状况。在生物群系中存在的物种,包括地方性物种中,都记录了霉菌病。大型动物似乎对水电大坝特别敏感,因为即使以前普遍的,普遍的和通俗的物种在大坝洪水后也减少或消失了。最新的预测表明,对塞拉多的占领将向北进行,再加上气候变化,将导致生物多样性的巨大损失。塞拉多北部仅会保留一小部分合适的自然栖息地,两栖动物的丰富度将减少到不到一半。

更新日期:2020-04-20
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