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The relative performance of umbrella species for biodiversity conservation in island archipelagos of the Great Lakes, North America

机译：北美大湖群岛群岛的伞形物种在生物多样性保护中的相对性能

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摘要

Managers often face the dilemma of planning reserve networks with limited data on species' distributions; "umbrella species," as surrogates for other co-occurring taxa, were thus proposed. Here, the relative efficiencies of "target species" representation in reserves selected using "single-species umbrellas" and "umbrella species groups" are compared, both relative to each other and to target species representation in randomly selected reserve areas. Distribution data for vertebrates and plants on islands of six Great Lakes basin archipelagos were analyzed. Reserves selected using "umbrella groups" contained more species than did those selected using "single-species umbrellas." Random selection constrained to the same total area occupied by umbrellas typically performed as well as umbrellas of any type. Reserve systems selected at random but constrained to the same number of islands occupied by umbrellas, however, contained lower proportions of target species than did reserve systems selected using umbrellas. Where data are limited, managers may be consoled by the result that random reserve selection appears to perform at least as well as any of the traditional applications of "umbrella species".
机译：管理者常常面临规划保护区网络的困境，而保护区网络的物种分布数据有限。因此，提出了“伞类”作为其他同时出现的分类单元的代用品。在此，比较了使用“单物种伞”和“伞物种组”选择的保护区中“目标物种”表示的相对效率，既相对彼此，又相对于随机选择的保护区中的目标物种表示。分析了六个大湖盆地群岛的岛屿上脊椎动物和植物的分布数据。与使用“单物种伞”选择的保护区相比，使用“伞类”选择的保护区包含的物种更多。随机选择被限制为通常执行的雨伞以及任何类型的雨伞所占的总面积相同。随机选择但被限制在相同数量的伞所占据的岛屿上的保护区所包含的目标物种比例要比使用伞所选择的保护区低。在数据有限的情况下，管理者可能会受到以下结果的安慰：随机储藏区选择的表现至少与“伞类”的任何传统应用一样好。

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