...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Both riverine detritus and dissolved nutrients drive lagoon fisheries
【24h】

Both riverine detritus and dissolved nutrients drive lagoon fisheries

机译：河流碎屑和溶解性养分共同驱动泻湖渔业

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

The net ecosystem metabolism in lagoons has often been estimated from the net budget of dissolved nutrients. Such is the case of the LOICZ estuarine biogeochemistry nutrient budget model that considers riverine dissolved nutrients, but not riverine detritus. However the neglect of detritus can lead to inconsistencies; for instance, it results in an estimate of 5-10 times more seaward export of nutrients than there is import from rivers in Chilika Lagoon, India. To resolve that discrepancy the UNESCO estuarine ecohydrology model, that considers both dissolved nutrients and detritus, was used and, for Chilika Lagoon, it reproduced successfully the spatial distribution of salinity, dissolved nutrients, phytoplankton and zooplankton as well as the fish yield data. Thus the model suggests that the riverine input of both detritus and dissolved nutrients supports the pelagic food web. The model also reproduces well the observation of decreased fish yield when the mouth of the lagoon was choked in the 1990s, demonstrating the importance of the physics that determine the flushing rate of waterborne matter. Thus, both farming in the watershed by driving the nutrient and detritus inputs to the lagoon, and dredging and engineering management of the mouth by controlling the flushing rate of the lagoon, have a major influence on fish stocks in the lagoon. (C) 2016 Elsevier Ltd. All rights reserved.
机译：泻湖的净生态系统新陈代谢通常是根据溶解养分的净预算估算的。 LOICZ河口生物地球化学养分预算模型就是这种情况，该模型考虑了河流溶解的养分，而不考虑河流碎屑。然而，忽视碎屑会导致矛盾。例如，与印度Chilika泻湖的河流进口相比，它向海面输出的养分估计多5-10倍。为了解决这一差异，使用了考虑溶解营养物和碎屑的联合国教科文组织河口生态水文模型，并且对于Chilika泻湖，它成功地再现了盐度，溶解营养物，浮游植物和浮游动物的空间分布以及鱼类产量数据。因此，该模型表明碎屑和溶解性养分的河流输入都支持中上层食物网。该模型还很好地再现了1990年代泻湖口被cho鱼时鱼类产量下降的观察结果，证明了决定含水物冲洗速率的物理学的重要性。因此，通过将营养物和碎屑输入到泻湖中在流域进行养殖，以及通过控制泻湖的冲洗速度进行疏dr和口部工程管理，都对泻湖中的鱼类种群产生重大影响。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2016年第ptab期|360-369|共10页
  • 作者

    Bonthu Subbareddy; Ganguly Dipnarayan; Ramachandran Purvaja; Ramachandran Ramesh; Pattnaik Ajit K.; Wolanski Eric;

  • 作者单位

    Govt India, Minist Environm Forest & Climate Change, Natl Ctr Sustainable Coastal Management, Koodal Bldg,Anna Univ Campus, Madras 600025, Tamil Nadu, India;

    Govt India, Minist Environm Forest & Climate Change, Natl Ctr Sustainable Coastal Management, Koodal Bldg,Anna Univ Campus, Madras 600025, Tamil Nadu, India;

    Govt India, Minist Environm Forest & Climate Change, Natl Ctr Sustainable Coastal Management, Koodal Bldg,Anna Univ Campus, Madras 600025, Tamil Nadu, India;

    Govt India, Minist Environm Forest & Climate Change, Natl Ctr Sustainable Coastal Management, Koodal Bldg,Anna Univ Campus, Madras 600025, Tamil Nadu, India;

    Chilika Dev Author, Bhubaneswar 751014, Odisha, India;

    James Cook Univ, TropWATER, Townsville, Qld, Australia|James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld, Australia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Estuarine food web; Detritus; Ecosystem model; Lagoon; Fish stocks;

    机译：河口食物网;碎屑;生态系统模型;泻湖;鱼类种群;

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