Coarse-filter surrogates do not represent freshwater fish diversity at a regional scale in Queensland, Australia
Coarse-filter surrogates do not represent freshwater fish diversity at a regional scale in Queensland, Australia
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DOI：
10.1016/j.biocon.2011.07.004
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发表时间：
2011-10-01
影响因子：
5.9
通讯作者：
VanDerWal, J.
中科院分区：
文献类型：
--
作者：
Januchowski-Hartley, S. R.;Hermoso, V.;VanDerWal, J.
非生物和生物信息分类经常被用于保护规划作为物种的粗过滤替代品。这些替代物和物种分布之间的关系通常是假设的，但很少由规划者评估。我们得出了四个非生物和八个生物信息分类的流达到作为替代品在湿热带生物区，昆士兰州，澳大利亚的生物多样性模式。我们使用流达到规划单位，并为每个代理的保护目标，我们使用了两个百分比- 10%和30% -的总流达到每个类所占的长度。然后，我们推导出最小集的规划单元，以满足每个代理人的目标，并通过计算28种鱼类的预测分布相同的目标的平均成绩测试的有效性的代理人。我们的结果表明，非生物分类和生物学分类都不善于代表淡水鱼类;事实上，没有一个替代品比随机选择的规划单元更能平均代表物种。业绩不佳主要有两个原因。首先，没有一个替代品有很高的分类强度或信息组成的变化，在研究区域内的鱼类。第二，频率分布的发生概率为大多数鱼类品种强烈右偏，少数流达到具有高概率。结合起来，这些结果意味着，流达到实现替代目标的选择是有效的随机相对于鱼类物种发生的概率，导致代表性差的鱼类物种。我们的结论是有一个有限的基础上使用粗过滤器的替代品，代表淡水鱼类的多样性在这一地区，有一个明确的需要在这个以及其他地区的研究，如果规划人员要了解与粗过滤器的替代品代表淡水生物多样性更广泛的限制。(C)2011爱思唯尔有限公司保留所有权利。
Abiotic and biologically informed classifications are often used in conservation planning as coarse-filter surrogates for species. The relationship between these surrogates and the distribution of species is commonly assumed, but rarely assessed by planners. We derived four abiotic and eight biologically informed classifications of stream reaches to serve as surrogates for biodiversity patterns in the Wet Tropics bioregion, Queensland, Australia. We used stream reaches as planning units and, as conservation targets for each surrogate, we used two percentages - 10% and 30% - of the total stream reach length occupied by each class. We then derived minimum sets of planning units to meet targets for each surrogate and tested the effectiveness of the surrogates by calculating the average achievement of the same targets for predicted distributions of 28 fish species. Our results showed that neither abiotic nor biologically informed classifications were good at representing freshwater fish species; in fact none of the surrogates led to average representation of species better than randomly selected planning units. There were two main reasons for this poor performance. First, none of the surrogates had high classification strength or informativeness about compositional change in fish species within the study region. Second, frequency distributions of probabilities of occurrence for most fish species were strongly right-skewed, with few stream reaches having high probabilities. Combined, these results meant that selection of stream reaches to achieve surrogate targets was effectively random with respect to probabilities of fish species occurrence, leading to poor representation of fish species. We conclude there is a limited basis for using coarse-filter surrogates to represent freshwater fish diversity in this region, and that there is a clear need for research in this as well as other regions if planners are to understand the limitations associated with coarse-filter surrogates for representing freshwater biodiversity more broadly. (C) 2011 Elsevier Ltd. All rights reserved.