...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquatic Sciences >Relating Variation In Species Composition To Environmental Variables: A Multi-taxon Study In An Indonesian Coral Reef Complex
【24h】

Relating Variation In Species Composition To Environmental Variables: A Multi-taxon Study In An Indonesian Coral Reef Complex

机译：物种组成变化与环境变量的关系：印度尼西亚珊瑚礁综合体的多分类研究

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

In order to manage and conserve coral reefs it is essential to understand the factors that structure reef communities. In Indonesia's Jakarta Bay - Pulau Seribu reef complex, pronounced on-to-offshore variation in a number of variables was observed. Live coral cover, and echinoderm and fish species richness were higher in midshore sites than either in- or offshore sites. Variation in habitat structure, the abiotic environment, distance between sample sites and covariation of these factors separately explained 9.6 to 15.1 % of the spatial variation in the composition of corals, echinoderms and fishes. Together, all three components explained > 50 % of the variation in composition. This indicates that spatial and environmental factors influence the distribution of species across the study area and have important implications for the large-scale management of this reef ecosystem. Large scale management and protection of these reefs will probably be important because the majority or reefs were in poor to very poor condition as exemplified by low (<25 %) coral cover. The coral cover of some inshore reefs was particularly low (< 1%). Inshore coral assemblages tended to be composed of stress-tolerant or specialised pioneers of highly perturbed environments. There were also locally high densities of potentially destructive species such as the sea urchin Diadema setosum. Midshore sites had relatively high coral cover comprising Acropora and Montipora spp. that were rare or absent elsewhere, presumably due to their sensitivity to pollution and mechanical damage. Most of the offshore sites had relatively low live coral cover and were dominated by rapidly growing pioneers or by stress- or -sediment-tolerant species. Spatial variation in the composition of taxa is discussed in the context of past-and-ongoing disturbances, including land-based pollution, coral mining, sedimentation and destructive fishing practices.
机译：为了管理和保护珊瑚礁，必须了解构成珊瑚礁群落的因素。在印度尼西亚的雅加达湾-斯里布岛礁复合体中，观察到许多变量的明显变化。中部沿海地区的活珊瑚覆盖率，棘皮动物和鱼类物种丰富度高于内陆或沿海地区。生境结构的变化，非生物环境，采样点之间的距离以及这些因素的协变分别解释了珊瑚，棘皮动物和鱼类组成的空间变化的9.6％至15.1％。所有这三个成分一起解释了成分变化的> 50％。这表明空间和环境因素影响整个研究区域内物种的分布，并对该珊瑚礁生态系统的大规模管理产生重要影响。对这些珊瑚礁进行大规模管理和保护可能很重要，因为大多数珊瑚礁的状况很差至极差，例如珊瑚覆盖率低（<25％）。一些近海珊瑚礁的珊瑚覆盖率特别低（<1％）。近海珊瑚群倾向于由承受压力或高度扰动环境的专门先驱组成。当地还存在高密度的潜在破坏物种，例如海胆Diadema setosum。中部沿海地区的珊瑚覆盖率较高，包括Ac足纲和蒙提普拉纲。可能是由于它们对污染和机械损坏的敏感性而在其他地方很少或不存在的。大多数离岸地点的活珊瑚覆盖率相对较低，主要由迅速增长的先驱者或耐压力或耐沉积物的物种主导。在过去和持续的干扰情况下讨论了分类单元组成的空间变化，包括陆地污染，珊瑚开采，沉积和破坏性捕捞活动。

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