• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of great lakes research >Temporal Dynamics of Nutrients (N and P) and Hydrology in a Lake Superior Coastal Wetland
【24h】

Temporal Dynamics of Nutrients (N and P) and Hydrology in a Lake Superior Coastal Wetland

机译：苏必利尔湖沿海湿地的养分（N和P）和水文学的时间动态

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

Coastal wetlands on Lake Superior are hydrologically complex ecosystems situated at the interface of upland catchments and the oligotrophic lake. Little is known about nutrient dynamics within coastal wetlands or their role in modifying or contributing to nutrient fluxes from watersheds to Lake Superior. We conducted an intensive study of Lost Creek Wetland (LCW) near Cornucopia, WI, with the objective of determining influences of temporal variability in hydrology on dynamics and retention of N and P. We measured hydrologic inputs and distributions of inorganic and organic forms of nitrogen and phosphorus within LCW under hydrologic conditions ranging from summer base flow to spring snow melt. Our study confirms that the interrelationship between hydrologic connections to lake and tributary and seasonal variations in hydrology can regulate internal nutrient dynamics of coastal wetlands. The strength of hydrologic linkage of LCW to Lake Superior and tributary varied greatly among seasons, resulting in shifts in the relative importance of these nutrient sources and influencing spatial distribution of nutrients within the wetland. Ratios of inorganic nitrogen and phosphorus in the wetland were consistently low ( < 16) indicating a potential for nitrogen limitation. Retention of inorganic nitrogen ranged from 11% to 94% and was positively related to hydraulic residence time which ranged from < 1 day during snow melt to 26 days in summer. Retention of total and soluble reactive phosphorus was generally lower than retention of inorganic nitrogen and was not related to hydraulic residence time.
机译：苏必利尔湖沿岸的湿地是水文复杂的生态系统，位于高地集水区和贫营养湖之间。人们对沿海湿地内的养分动态或其在改变或促进从流域到苏必利尔湖的养分通量的作用了解甚少。我们进行了深入的研究，其目的是确定水文学中的时间变异性对氮素和磷素的动态及保持力的影响。我们在威斯康星州的聚宝盆附近进行了迷失溪湿地（LCW）的研究。在从夏季基流到春季融雪的水文条件下，LCW中的磷和磷。我们的研究证实，与湖泊的水文联系与支流和水文季节变化之间的相互关系可以调节沿海湿地的内部养分动态。 LCW与苏必利尔湖和支流的水文联系强度随季节变化很大，导致这些养分来源的相对重要性发生变化，并影响了湿地中养分的空间分布。湿地中无机氮和磷的比率始终较低（<16），这表明存在氮限制的潜力。无机氮的保留率为11％至94％，与水力停留时间呈正相关，水力停留时间从融雪期间的<1天到夏季的26天不等。总和可溶性反应性磷的保留通常低于无机氮的保留，并且与水力停留时间无关。

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