LTREB: Stream Ecosystem Structure and Function within a Maturing Deciduous Forest

成熟落叶林溪流生态系统的结构和功能;和杰克逊，约翰K.机构：斯特劳德水研究中心这个项目解决了长期的变化，生态系统的一条河流位于农业地区的宾夕法尼亚州东南部。 斯特劳德水研究中心的科学家们将把重点放在白色粘土溪的部分，这是一个指定的国家野生和风景河流系统的分水岭，流经：一个60至100岁的森林;一个20岁的重新造林的草地;和一个永久性的草地。 由于科学家不完全了解河流生态系统的短期动态或长期稳定性，本研究将衡量（1）森林河流与草甸河流相比的效益，以及（2）达到河流恢复和重新造林项目里程碑所需的时间框架。 具有化学、生物学和生态系统建模专业知识的科学家将联合收割机努力取样、分析和描述溪流及其流域中生物群落的组成和活动。 对白色粘土溪的研究将提供对农业最佳管理做法的评估，以及由于这些做法而恢复生态系统的时间框架。 斯特劳德中心的教育和推广计划将把这些发现传达给农民和土地所有者，供他们直接实施，传达给政府官员和社区团体，供他们考虑政策，传达给将继承流域的教师和学生。

ABSTRACTTitle: LTREB: Stream ecosystem structure and function within a maturing deciduous forestPI's: Kaplan, Louis; Newbold, Denis J.; and Jackson, John K.Institutions: Stroud Water Research CenterThis project addresses long-term changes in the ecosystem of a stream located an agricultural region of southeastern Pennsylvania. Stroud Water Research Center scientists will focus on segments of White Clay Creek, a designated National Wild and Scenic River System watershed, that flow through: a 60- to100-year-old forest; a 20-year-old reforested meadow; and a permanent meadow. Because scientists do not fully understand either the short-term dynamics or the long-term stability of stream ecosystems, this study will measure (1) the benefits of a forested stream compared to a meadow stream and (2) the time frames needed to reach milestones for stream restoration and reforestation projects. Scientists with expertise in chemistry, biology, and ecosystem modeling will combine efforts to sample, analyze, and describe the composition and activities of biological communities in the stream and its watershed. The research on White Clay Creek will provide an evaluation of best management practices in agriculture and a time frame for ecosystem recovery as a result of those practices. Stroud Center educational and outreach programs will then convey these findings to farmers and landowners for direct implementation, to public officials and community groups for policy considerations, and to the teachers and students who will inherit the watershed.