Measuring the conservation value of tropical primary forests: the effect of occasional species on estimates of biodiversity uniqueness.
Measuring the conservation value of tropical primary forests: the effect of occasional species on estimates of biodiversity uniqueness.
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DOI：
10.1371/journal.pone.0009609
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发表时间：
2010-03-09
期刊：
影响因子：
3.7
通讯作者：
Peres CA
中科院分区：
文献类型：
--
作者：
Barlow J;Gardner TA;Louzada J;Peres CA
为多功能景观制定有效的保护计划需要准确了解不同土地利用的相对保护价值。越来越多的热带生态学家使用原始森林或古老森林特有的物种数量（或比例）来评估保护价值。然而，对改变土地利用的保护价值的估计可能会因偶尔存在的物种（例如单个体和双个体）而被夸大，这些物种可能无法作为孤立的可行种群存在。我们使用来自巴西亚马逊混合用途森林景观的独特 15 类群数据集来检验以下假设：从样本数据中删除偶尔的物种可以增加对原始森林生物多样性保护价值的估计。基于热带原始森林或古老森林特有物种比例的保护价值估算，对研究人员做出的关于纳入或排除偶尔物种的决定高度敏感。通过从改良的森林样本中去除单例，并仅考虑原始森林中已知的物种，我们对热带原始森林的保护价值的估计几乎翻了一番。
Developing effective conservation plans for multi-functional landscapes requires an accurate knowledge of the relative conservation value of different land-uses. A growing number of tropical ecologists have evaluated conservation value using the number (or proportion) of species that are unique to primary or old-growth forests. However, estimates of the conservation value of modified land-uses may be inflated by the presence of occasional species (e.g. singletons and doubletons) that may be unable to exist as viable populations in isolation. We use a unique 15-taxa dataset from a mixed-use forest landscape in the Brazilian Amazon to test the hypothesis that the removal of occasional species from sample data can increase estimates of the value of primary forest for biodiversity conservation. Estimates of conservation value that are based on the proportion of species that are unique to tropical primary or old-growth forests are highly sensitive to decisions researchers make regarding the inclusion or exclusion of occasional species. By removing singletons from modified forest samples, and considering only those species known to occur in primary forest, we almost double estimates of the conservation value of tropical primary forests.
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