RUI: A Geomorphic-Trophic Hypothesis for Arctic Lake Productivity

[00-9020] hersheyrui：北极湖泊生产力的地貌营养假说对湖泊生产力控制的研究历来集中在水柱-远洋区，要么强调自下而上的物理化学约束，要么强调自上而下的食物网约束。这两种模式都不足以描述世界上许多小湖泊，因为在浅湖中，与底栖生物有关的初级生产很重要。该项目将测试北极湖泊藻类、无脊椎动物和鱼类的生产，以及底栖动物和远洋动物之间的生产分布，可以根据景观标准、湖泊地貌和食物网配置来预测。对于任何湖泊系统来说，在决定底栖生物和远洋生物生产力方面，都缺乏对景观特征、湖泊地貌和营养结构之间关系的完整理解。这项工作将大大有助于理解浅湖的这些关系，这在世界各地的湖区都很常见。北卡罗莱纳大学格林斯博罗分校主要是一所拥有大量少数民族人口的本科院校。拟议的工作将积极地包括本科生，为他们提供执行他们将主要负责的监督项目的机会，让他们参与实地工作的各个方面，并使他们参与更大项目的整体范围。

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.