Cross-Site: Groundwater Influences on the Littoral Communities of Lakes: Recent and Long Term Impacts

新兴的地下水生态学认为，某些生物群是地下水的特征性居民，地下水与地表水生物群之间存在着重要的耦合关系。一种假设是，地下水流动影响了湖泊中底栖藻类的种类组成。在这里，我们建议通过密歇根州的波光湖内文斯湖和明尼苏达州的威廉姆斯湖来解决重要的短期和长期地下水/生物多样性相互作用。该研究将评估地下水输送的营养物质如何影响排放点和补给点底栖硅藻的物种组成，该排放点特有硅藻的扩散如何促进湖内硅藻多样性，以及地下水耦合的长期后果如何在沉积物岩心中得到跟踪。拟议的调查将扩大和补充三个地点的长期研究和周围的区域研究。

The emerging new field of groundwater ecology asserts that certain biota are characteristic residents of groundwater and that there are important couplings between groundwater and surface-water biota. One hyopthesis is that groundwater flow influenced benthic algal species composition in lakes. Here we propose to critically address important short-and long-term groundwater/biotic diversity interaction by Sparkling Lake Nevins Lake, MI and Williams Lake, MN. The research will assess how nutrients delivered by groundwater influence the species composition benthic diatoms at discharge and recharge sites, how dispersal of characteristic diatoms from that discharge contributes to within-lake diatom diversity,, and how the long-term consequences of groundwater coupling can be followed in sediment cores. The proposed investigations would expand and complement long-term studies at the three sites and surrounding regional studies.