• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>PLoS Clinical Trials >Spatio-Temporal Patterns of Key Exploited Marine Species in the Northwestern Mediterranean Sea
【2h】

Spatio-Temporal Patterns of Key Exploited Marine Species in the Northwestern Mediterranean Sea

机译：西北地中海主要被开发海洋物种的时空格局

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study analyzes the temporal variability/stability of the spatial distributions of key exploited species in the Gulf of Lions (Northwestern Mediterranean Sea). To do so, we analyzed data from the MEDITS bottom-trawl scientific surveys from 1994 to 2010 at 66 fixed stations and selected 12 key exploited species. We proposed a geostatistical approach to handle zero-inflated and non-stationary distributions and to test for the temporal stability of the spatial structures. Empirical Orthogonal Functions and other descriptors were then applied to investigate the temporal persistence and the characteristics of the spatial patterns. The spatial structure of the distribution (i.e. the pattern of spatial autocorrelation) of the 12 key species studied remained highly stable over the time period sampled. The spatial distributions of all species obtained through kriging also appeared to be stable over time, while each species displayed a specific spatial distribution. Furthermore, adults were generally more densely concentrated than juveniles and occupied areas included in the distribution of juveniles. Despite the strong persistence of spatial distributions, we also observed that the area occupied by each species was correlated to its abundance: the more abundant the species, the larger the occupation area. Such a result tends to support MacCall's basin theory, according to which density-dependence responses would drive the expansion of those 12 key species in the Gulf of Lions. Further analyses showed that these species never saturated their habitats, suggesting that they are below their carrying capacity; an assumption in agreement with the overexploitation of several of these species. Finally, the stability of their spatial distributions over time and their potential ability to diffuse outside their main habitats give support to Marine Protected Areas as a potential pertinent management tool.
机译：这项研究分析了狮子湾（西北地中海）主要被开发物种空间分布的时间变异性/稳定性。为此，我们分析了MEDITS底拖网科学调查从1994年至2010年在66个固定站进行的数据，并选择了12种关键开发物种。我们提出了一种地统计学方法来处理零膨胀和非平稳分布，并测试空间结构的时间稳定性。然后应用经验正交函数和其他描述符来研究时间持久性和空间模式的特征。研究的12个关键物种的分布空间结构（即空间自相关模式）在采样期间内保持高度稳定。通过克里金法获得的所有物种的空间分布也似乎随着时间的推移是稳定的，而每个物种都显示出特定的空间分布。此外，成年人通常比青少年和集中在青少年分布中的居住区更为密集。尽管空间分布具有很强的持久性，但我们还观察到每种物种所占的面积都与其丰富程度相关：物种越丰富，占用面积就越大。这种结果倾向于支持MacCall的流域理论，根据该理论，密度依赖性响应将推动这12个主要物种在狮子湾的扩张。进一步的分析表明，这些物种从未使栖息地饱和，这表明它们低于其承载能力；一个与这些物种中的几种过度开发相一致的假设。最后，随着时间的推移，其空间分布的稳定性以及其扩散到主要栖息地之外的潜在能力，为海洋保护区提供了潜在的相关管理工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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