...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean & coastal management >Impact of maintenance dredging on macrobenthic community structure of a tropical estuary
【24h】

Impact of maintenance dredging on macrobenthic community structure of a tropical estuary

机译：维修疏on对热带河口大型底栖动物群落结构的影响

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

This paper demonstrates the impact of maintenance dredging activities on the macrobenthic community structure of a tropical monsoonal estuary (Cochin estuary), located in the southwest coast of India for three consecutive years. The results of the study indicates apparent differences in benthic fauna and sediment characteristics between dredging and non-dredging sites, while most of the hydrographical parameters (temperature, pH, DO and BOD) exhibited inconspicuous variations. The dredging sites were characterized by significantly lower faunal density, biomass, and diversity and sustained distinct benthic faunal communities. The tubificid Oligochaeta, an opportunistic benthic taxon, was highly abundant in the dredging sites along with less density of Mollusca and Amphipoda. Prominent distinctions were evident in the feeding guilds of macrobenthic fauna between the dredging and non-dredging sites. The Benthic Opportunistic Annelida Amphipods Index (BO2A index), an index of benthic habitat quality showed relatively higher values (>0.24), which indicates the prevalence of poor environmental conditions in the dredging locations. The present study reveals the extent of impacts associated with maintenance dredging activities in a tropical estuary, which can be used to formulate effective management strategies for the protection of ecologically and economically significant benthic communities of estuarine ecosystems. (C) 2017 Elsevier Ltd. All rights reserved.
机译：本文证明了维持挖泥活动对连续三年位于印度西南海岸的热带季风河口（科钦河口）的大型底栖动物群落结构的影响。研究结果表明，疏sites地点和非疏sites地点之间底栖动物区系和沉积物特征存在明显差异，而大多数水文参数（温度，pH，DO和BOD）表现出不起眼的变化。疏sites点的特点是动物群密度，生物量和多样性显着降低，底栖动物群落持续存在。大头鱼Oligochaeta是一种机会性底栖生物分类群，在疏sites处非常丰富，而软体动物和两栖动物的密度较小。在疏ben地点和非疏sites地点之间大型底栖动物的饲养行会中有明显的区别。底栖生境双栖动物两栖动物指数（BO2A指数）是底栖生境质量指数，显示相对较高的值（> 0.24），这表明在疏the地区普遍存在恶劣的环境条件。本研究揭示了在热带河口与维护疏dr活动相关的影响程度，可用于制定有效的管理策略，以保护具有生态和经济意义的河口生态系统底栖生物群落。 （C）2017 Elsevier Ltd.保留所有权利。

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