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

【摘要】题目：LTREB：成熟落叶林中溪流生态系统结构与功能[s]: Kaplan， Louis；丹尼斯·纽博尔德；机构：斯特劳德水研究中心该项目研究了宾夕法尼亚州东南部农业区一条河流生态系统的长期变化。斯特劳德水研究中心的科学家们将把重点放在白粘土溪的部分地区，这是一个指定的国家野生和风景河流系统流域，流经：60到100年的森林；20年复植的草甸；还有一片永久的草地。由于科学家们并不完全了解河流生态系统的短期动态或长期稳定性，因此本研究将测量(1)与草甸河流相比，森林河流的好处；(2)达到河流恢复和再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共同努力取样、分析和描述河流及其分水岭中生物群落的组成和活动。对白粘土溪的研究将提供对农业最佳管理做法的评估，以及这些做法所带来的生态系统恢复的时间框架。然后，斯特劳德中心的教育和推广项目将把这些发现传达给农民和土地所有者，供其直接实施；传达给政府官员和社区团体，供其考虑政策；传达给将继承该流域的教师和学生。

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.