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Coffee agrosystems: an important refuge for amphibians in central Veracruz, Mexico

机译：咖啡农业系统：墨西哥韦拉克鲁斯中部的两栖动物重要避难所

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摘要

Of the most common types of land use, agroecosystems put enormous pressure on many groups of biological organisms. Amphibians are not the exception and here we show the value of these habitats to the conservation of this group. We evaluated the diversity of amphibians in coffee plantations (traditional and specialized shade) and also in fragments of cloud forest, the ecosystem that was dominant in pre-agricultural central Veracruz, Mexico. A sampling effort of 2,688 person hours recorded 1,078 amphibians belonging to 26 species, 10 families and three orders. Based on the mean complementarity of 64 %, the non-metric multidimensional scaling analysis identified three groups of communities indicating a high degree of species turnover. The Craugastoridae family was dominant at the study sites, representing 40 % of the entire sample. Amphibian diversity was high in cloud forest fragments, followed by the traditional coffee plantation. However, amphibian richness in the specialized shaded coffee plantation was not significantly different from that of the other two habitats. We conclude that the different types of coffee agrosystems are reservoirs for at least 46 % of the species native to cloud forest, indicating that this habitat is very important to the conservation of the amphibian fauna in central Veracruz.
机译：在最常见的土地利用类型中，农业生态系统给许多种类的生物造成了巨大压力。两栖动物也不例外，在这里我们展示了这些栖息地对保护这一群体的价值。我们评估了咖啡种植园（传统和专业阴影）中两栖动物的多样性，还评估了云雾森林的两栖动物的多样性，云雾森林是墨西哥韦拉克鲁斯前农业中部的主要生态系统。采样工作量为2688人/小时，记录了1078个两栖动物，它们属于26个物种，10个科目和三个科。基于64％的平均互补性，非度量多维标度分析确定了三类群落，这些群落表明物种转换的程度很高。 Craugastoridae家族在研究地点占主导地位，占整个样本的40％。两栖动物多样性在云雾森林碎片中较高，其次是传统的咖啡种植园。但是，在专门的遮荫咖啡种植园中，两栖动物的丰富程度与其他两个生境的丰富程度没有显着差异。我们得出的结论是，不同类型的咖啡农业系统是至少46％的云林原生物种的水库，这表明该栖息地对于维拉克鲁斯中部的两栖动物保护非常重要。

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