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首页> 外文期刊>Estuarine Coastal and Shelf Science >Empirical relationship between eelgrass extent and predicted watershed-derived nitrogen loading for shallow New England estuaries
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Empirical relationship between eelgrass extent and predicted watershed-derived nitrogen loading for shallow New England estuaries

机译:新英格兰浅河口鳗草范围与分水岭氮预测负荷之间的经验关系

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摘要

Seagrasses provide important ecological services that directly or indirectly benefit human well-being and the environment. Excess nitrogen inputs are a major cause of eelgrass loss in the marine environment. Here we describe the results of a study aimed at quantifying the extent of eelgrass as a function of predicted watershed-derived nitrogen loading for small-to-medium-sized shallow estuaries in New England. Findings confirm that reduced extent of eelgrass corresponds to increased loading of nitrogen to this class of estuary. At lower levels of nitrogen loading (≤50 Kg ha~(-1) yr~(-1)), eelgrass extent is variable and is likely controlled by other ecosystem factors unrelated to water quality. At higher loading rates, eelgrass roverage decreases markedlv. with essentially no eelgrass at loading levels ≥100 kg ha~(-1) yr~(-1).
机译:海草提供了直接或间接有益于人类福祉和环境的重要生态服务。过量的氮输入是海洋环境中鳗草损失的主要原因。在这里,我们描述了一项研究结果,该研究旨在量化鳗鱼草的范围,作为新英格兰中小型浅河口预测的分水岭派生氮负荷的函数。结果证实,鳗草的减少程度对应于此类河口的氮负荷增加。在较低的氮负荷水平下(≤50Kg ha〜(-1)yr〜(-1)),鳗草的范围是可变的,并且可能受到与水质无关的其他生态系统因素的控制。在较高的装载速率下,鳗gra的流失显着减少。负载水平≥100kg ha〜(-1)yr〜(-1)时基本上没有鳗gra。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2010年第4期|p.231-240|共10页
  • 作者单位

    US. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Atlantic Ecology Division, Narragansett, RI 02882, USA;

    US. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Atlantic Ecology Division, Narragansett, RI 02882, USA;

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

    New England; eutrophication; estuary; watershed nitrogen; eelgrass; zostera marina;

    机译:新英格兰;富营养化河口;分水岭氮;鳗草佐斯特拉码头;

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