External Forcing vs. Internal Processing in Two Oligotrophic Lakes

将分析加利福尼亚州城堡湖和太浩湖初级和次级生产力模式以及营养循环动态的长期(27年)数据集，以确定营养物质的生物循环和“新”营养物质的供应在控制湖泊生产力方面的相对重要性。此外，将在两个湖泊进行有限的测量，以继续长期数据集。这项新研究的主要成果将是控制加州两个湖泊初级和次级生产的因素的概念模型。该模型对设计进一步的科学研究具有一定的参考价值。同样重要的是，该模型将有助于制定未来大型湖泊系统的管理战略，这些系统位于正在经历土地利用变化的流域，如度假村开发。戈德曼博士和他的同事们长期从事高质量的科学研究，并利用这些科学帮助解决社会问题。这项研究的制度支持是极好的。生态系统研究计划建议授予这笔赠款。

Long-term (27-year) data sets on patterns of primary and secondary productivity and nutrient cycling dynamics for Castle Lake and Lake Tahoe, California, will be analyzed to determine the relative importance of biotic recycling of nutrients and the supply of "new" nutrients in controlling lake productivity. In addition, a limited set of measurements at the two lakes will be made to continue the long-term data sets. The major product of this new research will be a conceptual model of factors that control primary and secondary production in the two California lakes. This model will be useful for designing further scientific research. As important, the model will be useful for developing future management strategies for large lake systems that are located in watersheds undergoing land use changes such as resort development. Dr. Goldman and his colleagues have long records of doing high quality science and using this science to help solve societal problems. The institutional support for the research is excellent. The Ecosystem Studies Program recommends award of this grant.