Salas F, Patrício J, Marcos C, Pardal M A, Pérez-Ruzafa A, Marques J C
Department of Ecology and Hydrology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
Mar Pollut Bull. 2006 Feb;52(2):162-74. doi: 10.1016/j.marpolbul.2005.08.014. Epub 2005 Oct 7.
Assessing the ecological status, a concept implemented in the European Water Framework Directive [Directive of the European Parliament and of the Council 2000/60/EC establishing a framework for community action in the field of water policy PE-CONS 3639/1/00, 72 p.], requires the application of methods capable of distinguishing different levels of ecological quality. Somerfield and Clarke [Marine Environmental Research 43 (2003) 145-156] proposed Average Taxonomic Distinctness to be used as tool in this context. We tested the robustness of Taxonomic Distinctness measures applying it in different scenarios (estuarine eutrophication, organic pollution, and re-colonisation after physical disturbance), analysing simultaneously its compliance to other types of ecological indicators. Results show that, in most of the case studies, only Total Taxonomic Distinctness was relatively satisfactory in discriminating between disturbed situations. Other Taxonomic Distinctness measures have not proved to be more sensitive than other ecological indicators (Shannon-Wiener, Margalef, and Eco-Exergy indices). Therefore, this approach does not seem to be particularly helpful in assessing systems' ecological status with regard to the WFD implementation.
评估生态状况是欧洲水框架指令[欧洲议会和理事会指令2000/60/EC，为水政策领域的共同体行动建立框架，PE-CONS 3639/1/00，72页]中实施的一个概念，这需要应用能够区分不同生态质量水平的方法。索默菲尔德和克拉克[《海洋环境研究》43（2003）145 - 156]提出将平均分类差异用作这方面的工具。我们在不同情景（河口富营养化、有机污染以及物理干扰后的重新定殖）中应用分类差异度量来测试其稳健性，同时分析其与其他类型生态指标的契合度。结果表明，在大多数案例研究中，只有总分类差异在区分受干扰情况方面相对令人满意。其他分类差异度量并未被证明比其他生态指标（香农 - 维纳指数、马加莱夫指数和生态能值指数）更敏感。因此，就水框架指令的实施而言，这种方法在评估系统的生态状况方面似乎并不是特别有用。
