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Conservation Goals and the Relative Importance of Costs and Benefits in Reserve Selection

机译：保护目标和储备选择中成本和收益的相对重要性

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Including both economic costs and biological benefits of sites in systematic reserve selection greatly increases cost-efficiency. Nevertheless, limited funding generally forces conservation planners to choose which data to focus The most resources on; therefore, the relative importance of different types of data must be carefully assessed. We investigated the relative importance of including information about costs and benefits for 3 different commonly used conservation goals: 2 in which biological benefits were measured per site (species number and conservation value scores) and 1 in which benefits were measured on the basis of site complementarity (total species number in the reserve network). For each goal, we used site-selection models with data on benefits only, costs only, and benefits and costs together, and we compared the efficiency of each model, Costs were more important to include than benefits for the goals in which benefits were measured per site. By contrast, for the complementarity-based goal, benefits were more important to include. To understand this pattern, we compared the variability in benefits and in costs for each goal. By comparing the best and the worst possible selection of sites with regard to costs alone and benefits alone for each conservation goal, we introduced a simple and consistent variability measure that is applicable to all kinds of reserve-selection situations. In our study, benefit variability depended strongly on bow the conservation goal was formulated and was largest for the complementarity-based conservation goal. We argue that from a cost-efficiency point of view, most resources should be spent on collecting the most variable type of data for the conservation goal at band.
机译：在系统化的储量选择中既包括经济成本又包括场地的生物效益，可以大大提高成本效益。然而，资金有限通常迫使保护规划者选择最关注资源的数据。因此，必须仔细评估不同类型数据的相对重要性。我们调查了包括3种不同的常用保护目标的成本和收益信息的相对重要性：2其中每个站点测量了生物收益（物种数量和保护价值得分），1其中根据站点互补性测量了收益（保护区网络中的物种总数）。对于每个目标，我们使用了仅具有收益，仅成本以及收益和成本数据的站点选择模型，并且我们比较了每个模型的效率，对于衡量收益的目标而言，成本比收益更重要每个站点。相比之下，对于基于互补性的目标，包含收益更为重要。为了理解这种模式，我们比较了每个目标的收益和成本的可变性。通过比较就每个保护目标而言，就成本和收益而言，最佳和最差地点的选择，我们引入了一种简单而一致的变异性度量方法，适用于所有种类的储量选择情况。在我们的研究中，利益可变性很大程度上取决于弓箭，制定了保护目标，对于基于互补性的保护目标最大。我们认为，从成本效率的角度来看，应将大多数资源用于收集频段可变性最强的数据，以实现频段保护目标。

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