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

标题：LTREB：成熟落叶森林中的溪流生态系统结构和功能PI：卡普兰，路易斯；纽博尔德，丹尼斯J；和杰克逊，约翰K。研究所：干水研究中心这个项目研究位于宾夕法尼亚州东南部农业区的溪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专注于被指定为国家野生和风景河流系统分水岭的白泥溪的几个部分，这些分水岭流经：一片60到100年的森林；一片20年的重新造林的草甸；以及一片永久的草甸。由于科学家既不完全了解河流生态系统的短期动态，也不完全了解河流生态系统的长期稳定性，这项研究将衡量(1)与草甸河流相比，森林河流的好处，以及(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，对溪流及其分水岭中生物群落的组成和活动进行采样、分析和描述。对白泥溪的研究将提供对农业最佳管理做法的评价，以及因这些做法而导致的生态系统恢复的时间框架。斯特劳德中心的教育和推广计划随后将把这些调查结果传达给农民和土地所有者直接实施，传达给公职人员和社区团体以供政策考虑，并传达给将继承这一分水岭的教师和学生。

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.