RUI: A Geomorphic-Trophic Hypothesis for Arctic Lake Productivity

关于北极湖生产力的地貌营养假说历史上对湖泊生产力控制的研究一直集中在水柱--中上层区域，强调自下而上的物理化学限制，或自上而下的食物网限制。这两种模式都不足以描述世界上许多小湖泊，因为在浅水湖中，与底物相关的(底栖生物)初级生产力是重要的。该项目将检验这样一种假设，即可以根据景观标准、湖泊地貌和食物网结构来预测北极湖藻类、无脊椎动物和鱼类的产量，以及底栖生物和远洋生物之间的产量分布。对于任何湖泊系统来说，都缺乏对景观特征、湖泊地貌和营养结构之间的关系的全面了解，这些关系决定了底栖和远洋生产力。这项工作将大大有助于理解浅水湖泊的这些关系，这些关系在世界各地的湖区都很常见。北卡罗来纳大学格林斯伯勒分校主要是一所拥有大量少数族裔人口的本科院校。拟议的工作将积极纳入本科生，为他们提供机会执行他们将承担主要责任的受监督项目，让他们参与实地工作的所有方面，并让他们参与更大项目的总体范围。

00-90202HersheyRUI: A geomorphic trophic hypothesis for arctic lake productivityStudies of controls of lake productivity have historically focused on the water column-the pelagic zone, emphasizing either bottom up physiochemical constraints, or top-down food web constraints. Neither paradigm is fully adequate to describe many small lakes of the world, because in shallow lakes, substrate-associated (benthic) primary production is important. This project will test the hypothesis that Arctic lake algal, invertebrate, and fish production, and the distribution of production between benthic and pelagic compartments, can be predicted based on landscape criteria, lake geomorphology, and food web configuration. A complete understanding of the relationships between landscape features, lake geomorphology, and trophic structure in determining both benthic and pelagic productivity is lacking for any system of lakes. This work will contribute substantially to the understanding of these relationships for shallow lakes, which are common in lake districts worldwide. The University of North Carolina at Greensboro is primarily an undergraduate institution with a substantial minority population. The proposed work will actively include undergraduates, providing them with opportunities to perform supervised projects for which they will have primary responsibility, involving them in all aspects of field work, and engaging them in the overall scope of the larger project.