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A review of protocols for selecting species at risk in the context of US Forest Service viability assessments

机译:在美国森林服务业可行性评估的背景下,选择有风险物种的协议的审查

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In December 2000, the USDA Forest Service (USFS) commissioned a review of their process for conducting viability assessments under the National Forest Management Act (NFMA). The objectives of the USFS review were to establish the scientific basis for geographic and temporal scales used in the assessment of viability, to identify and improve approaches that could be used to assess species viability within the context of NFMA, and to describe the strengths and limitations of the approaches used in the viability assessment process. In this paper, we present one aspect of this overall review: methods available and in use for selection of species at risk for the viability assessment process. A representative group of methods includes threatened and endangered species protocols such as the IUCN protocol, the Heritage ranks, the method devised by Millsap et al. (1990) to identify threatened and endangered species in Florida, as well as protocols for narrower taxonomic and geographic ranges. We provide a description of each of the nine protocols reviewed and compare them in terms of their taxonomic and geographic range. biological attributes, consideration of threats and population trends, data requirements, reliability and robustness, transparency and ability to deal With Uncertainty. We found that all threatened and endangered species protocols are useful for classifying species at risk, however, those that explicitly include current and future threats are of most use in determining which species will be adversely affected by proposed management actions. We recommend that Heritage ranks be used to identify an initial set of candidate species for assessment of viability considerations, with further refinement and supplementation based on species distributions, relative to the scale of the planning area. (C) 2004 Published by Elsevier SAS.
机译:2000年12月,美国农业部森林服务局(USFS)委托其根据《国家森林管理法》(NFMA)进行可行性评估。 USFS审查的目标是建立用于生存能力评估的地理和时间尺度的科学基础,确定和改进可用于在NFMA范围内评估物种生存力的方法,并描述优势和局限性可行性评估过程中使用的方法。在本文中,我们介绍了这一总体综述的一个方面:可用的方法和用于选择生存力评估过程中处于危险中的物种的方法。代表性的方法组包括受威胁和濒危物种规程,例如IUCN规程,Heritage等级(由Millsap等人设计的方法)。 (1990年),以确定在佛罗里达州的濒危和濒临灭绝的物种,以及缩小分类和地理范围的协议。我们提供了所审查的九种协议中每一种的描述,并根据它们的分类和地理范围对其进行了比较。生物学特性,对威胁和人口趋势的考虑,数据要求,可靠性和健壮性,透明度和处理不确定性的能力。我们发现,所有濒危物种协议都可用于对处于风险中的物种进行分类,但是,那些明确包含当前和未来威胁的协议在确定哪些物种将受到提议的管理措施不利影响时最有用。我们建议使用Heritage等级来识别候选物种的初始集合,以评估生存能力,并根据物种分布(相对于规划区域的规模)进一步完善和补充。 (C)2004由Elsevier SAS发布。

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