Water and Chemical Budgets for Two Tropical Rainforest Watersheds (SGER)

小行星9800129 这里提议的短期项目的目标是在哥斯达黎加的La Selva生物站建立并开始监测第一批永久性的高质量流量测量站，该生物站是中美洲迅速消失的低地热带雨林中研究得最好（在生态学方面）和设备最好的实地研究站。 数据将用于： 为La Selva的两个小流域制作第一批高质量的水文预算（这方面具有时间敏感性，因为它依赖于与其他研究人员正在进行的降雨量和ET的持续测量相联系，并在特定时间段内获得资助） 测试水文假设，仅从地球化学数据生成，在一个流域的径流的显着部分是高溶质地热地下水到流域地下水跨流域转移的结果开始生产化学收支（投入和产出），认识到输入的一部分可能在地下（我们期望上述关于地热地下水的假设被接受）开始初步，定量评估是否有重大的生态差异，可以可靠地归因于水文差异之间的流域（这依赖于格鲁吉亚大学的凯瑟琳·普林格尔（Catherine Pringle）在单独资助下进行的生态工作）。

9800129 Genereux The goal of the short-term project proposed here is to establish and begin monitoring the first permanent, high-quality streamflow measurement sites at La Selva Biological Station in Costa Rica, the best-studied (with respect to ecology) and best-equipped field research station in the rapidly disappearing lowland tropical rainforest of Central America. The data will be used to: produce the first high-quality hydrologic budgets for two small watersheds at La Selva (this aspect is time-sensitive, in that it relies on linking up with ongoing measurements of rainfall and ET which are being carried out by other researchers and are funded for a specific period of time) test the hydrologic hypothesis, generated solely from geochemical data, that a significant portion of streamflow on one of the watersheds is the result of subsurface interbasin transfer of high-solute geothermal groundwater into the watershed begin production of chemical budgets (input and output) for the watersheds, recognizing that part of the input is probably in the subsurface (we expect the hypothesis above concerning geothermal groundwater to be accepted) begin preliminary, quantitative assessment of whether there are significant ecological differences that can be reliably attributed to hydrologic differences between the watersheds (this relies on ecological work being carried out by Catherine Pringle at the University of Georgia with separate funding).