首页> 外文期刊>Animal Biodiversity and Conservation >Ecological status of headwaters in the wet Betic Mountains (Los Alcomocales Natural Park, southernmost Spain) according to the WFD: does the application of this Directive ensure conservation?
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Ecological status of headwaters in the wet Betic Mountains (Los Alcomocales Natural Park, southernmost Spain) according to the WFD: does the application of this Directive ensure conservation?

机译:根据世界粮食日(WFD),在湿润的Baetic山区(Los Alcornocales自然公园,西班牙最南端)的源头的生态状况:该指令的应用是否能确保保护?

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In compliance with the European Water Framework Directive, member states have had to develop a method to assess the quality of aquatic ecosystems by comparing the current situation regarding near natural reference conditions for each river type. In 2008, the Spanish Ministry of Environment approved the Order of Water Planning Statement. This statement sets out reference conditions and ecological status class change limits for the different types of rivers in Spain for which sufficient data are available. In the present study, we established reference conditions and quality class thresholds for streams classified as wet Betic mountain rivers from 24 reaches of streams located in Los Alcornocales Natural Park, using two qualitative indices based on macroinvertebrates (IBMWP and IMMi-L). The results for the IBMWP index indicate that from the standpoint of management of the ecological state, the watercourses studied show more affinity with the types of the Spanish Atlantic siliceous slope than with those of the Mediterranean siliceous slope when we consider EQR values. Considering the threshold values, the index resembles siliceous low Mediterranean mountain rivers (type 8). However, the EQR values do not match those calculated in this study. These results suggest that it is necessary to use an index adapted to the characteristics of these watercourses. Application of the quality criteria contained in the Guadalete Barbate and Mediterranean Andalusian Basin Plans to the management of these waterways is discussed, because it is unlikely that they ensure the maintenance of good ecological status. We thus propose a new calibration of the IBMWP index that ensures the maintenance of good environmental status of watercourses in this natural area, and the use of the IMMi-L index as an effective management tool. However, as our study area represents only a part of the wet headwaters in the southern Iberian peninsula, analysis of other basin types is necessary to complete such information.
机译:根据欧洲水框架指令,成员国必须开发一种方法,通过比较每种河流类型的近乎自然参考条件的现状来评估水生生态系统的质量。 2008年,西班牙环境部批准了《水利计划令》。该声明列出了西班牙各种类型河流的参考条件和生态状况等级变化限制,这些数据可提供足够的数据。在本研究中,我们使用两个基于大型无脊椎动物的定性指标(IBMWP和IMMi-L),为位于Los Alcornocales自然公园的24条河流分类为湿Betic山区河流的河流确定了参考条件和质量等级阈值。 IBMWP指数的结果表明,从生态状态管理的角度来看,当我们考虑EQR值时,所研究的水道与西班牙大西洋硅质斜坡的类型比与地中海硅质斜坡的类型具有更大的亲和力。考虑到阈值,该指数类似于硅质地中海低山区河流(类型8)。但是,EQR值与本研究计算的值不匹配。这些结果表明,有必要使用适合这些水道特征的指标。讨论了瓜达莱特·巴贝特和地中海安达卢西亚流域规划中包含的质量标准在这些水道的管理中的应用,因为它们不太可能确保维持良好的生态状况。因此,我们建议对IBMWP指数进行新的校准,以确保在该自然地区中维持水道的良好环境状态,并使用IMMi-L指数作为有效的管理工具。但是,由于我们的研究区域仅代表伊比利亚半岛南部湿润的上游水源的一部分,因此有必要对其他流域类型进行分析以完成此类信息。

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