...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES Journal of Marine Science >Mapping fish community biodiversity for European marine policy requirements
【24h】

Mapping fish community biodiversity for European marine policy requirements

机译：根据欧洲海洋政策要求绘制鱼类群落生物多样性图

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Predictive maps of biodiversity patterns are pivotal to marine conservation and marine spatial planning alike, yet mapping of biodiversity indicators at the community-level is neither straightforward nor well-tested empirically. Two principle approaches exist. A direct approach involves calculation of indices for each sample, followed by interpolation to estimate values at unsampled locations. An indirect approach first interpolates individual species distributions and then determines indices based on the stacked distribution maps. We compared the appropriateness of both approaches to provide management-relevant information by mapping the distribution of demersal fish biodiversity in the German North Sea Exclusive Economic Zone using species richness, Hill's N-1 and a novel traits-based community sensitivity to fishing index (CSI). To substitute zero-inflated species with up to 95% zeros in the sample data, we applied each species' mean abundance value as a flat surface. Spatial patterns between indicators varied, but certain hot-and cold-spots were revealed, which, under current legislation, might suggest that the present level of biodiversity protection is insufficient. Despite both approaches generating similar main patterns, the direct approach predicted a narrower range of index values and only depicted the most dominant patterns. Contrary to that the indirect approach better reproduced the variability in the data, along with additional information on species distributions and a theoretical advantage pertaining to sampling issues. Although the choice over the mapping approach is context dependent, for our study area featuring a community with relatively few species, we consider the indirect approach to provide the more reliable information for implementing marine environmental legislation.
机译：生物多样性模式的预测图对海洋保护和海洋空间规划均至关重要，但是在社区一级对生物多样性指标的测绘既不简单，也未经经验检验。存在两种主要方法。直接方法涉及为每个样本计算索引，然后进行插值以估计未采样位置的值。间接方法首先对单个物种分布进行插值，然后根据堆叠的分布图确定索引。我们通过使用物种丰富度，希尔的N-1和基于特征的新型社区对捕鱼指数的敏感性（CSI）绘制德国北海专属经济区中沉鱼生物多样性的分布图，比较了两种方法提供管理相关信息的适当性）。为了在样本数据中用高达95％的零代替零膨胀的物种，我们将每个物种的平均丰度值应用为平坦表面。指标之间的空间格局各不相同，但揭示了某些热点和热点，根据现行立法，这可能表明目前的生物多样性保护水平不足。尽管两种方法都生成相似的主要模式，但是直接方法预测的索引值范围更窄，并且仅描述了最主要的模式。与之相反，间接方法可以更好地再现数据的可变性，以及有关物种分布的更多信息以及与采样问题有关的理论优势。尽管对映射方法的选择取决于上下文，但是对于我们研究区域中物种相对较少的社区，我们认为间接方法可为实施海洋环境立法提供更可靠的信息。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号