Collaborative Research: Influences of Geology and Tree Species Composition on the Response of Forest Nutrient Dynamics to an Exotic Pest

合作研究：地质和树种组成对森林养分动态对外来害虫响应的影响

• 批准号: 0444895
• 负责人: Gary Lovett
• 金额: $ 31.93万
• 依托单位: Cary Institute of Ecosystem Studies, Inc.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0444895&HistoricalAwards=false
• 关键词: Collaborative; Research; Influences; Geology; Tree

Beech bark disease (an introduced disease complex involving a scale insect and a pathogenic fungus) initially was introduced into Nova Scotia in 1890 and has been spreading south and west. This research focuses on beech bark disease influences on forest tree community composition and on carbon and nitrogen cycling in northeastern U.S. forests (Catskill Mountains of New York State and the White Mountains of New Hampshire). Replacement of beech by sugar maple has the potential to influence forest carbon and nitrogen cycling because of substantial differences in litter quality between the two species. Sugar maple, in particular, has unique qualities of carbon and nitrogen cycling. Sugar maples compete better on soils of moderate to high base status, and the base status is largely determined by the underlying geology of the forest. The principal hypotheses in this project are: 1) geologic substrate will strongly influence the response of the tree community to BBD, and 2) the changes in tree community composition will have a significant effect on the carbon and nitrogen dynamics of the forest ecosystem. The broader impacts of this project are numerous. The research involves collaboration between two mid-career scientists, one of whom is female, and a young scientist. All investigators will train undergraduate and graduate students over the course of this study. The lead investigator is well poised to take advantage of the NSF-sponsored Research Experiences for Undergraduate Programs in place at his institution. This research has clear connections to policy, conservation, and management concerning the effects of exotic species introductions. This connection is strengthened by collaborations with the Nature Conservancy and the Northeastern Research Cooperative. The relationship between the investigators and TNC and NERC increase the probability of broad dissemination of the results to policy makers and NGO's to ultimately benefit and inform society's conservation of public resources.

山毛榉树皮病（一种涉及介壳虫和致病真菌的外来疾病复合体）最初于1890年传入新斯科舍省，并一直向南部和西部蔓延。 本研究的重点是山毛榉树皮病对林木群落组成和碳和氮循环在美国东北部的森林（卡茨基尔山的纽约州和新罕布什尔州的白色山）的影响。 山毛榉糖枫树的替代有可能影响森林碳和氮循环，因为这两个物种之间的凋落物质量的实质性差异。 特别是糖枫，具有碳和氮循环的独特品质。 糖枫在中度到高度盐基状态的土壤上竞争更好，盐基状态在很大程度上取决于森林的底层地质。 本项目的主要假设是：1）地质基质将强烈影响树木群落对BBD的响应，2）树木群落组成的变化将对森林生态系统的碳和氮动态产生重大影响。 这个项目的广泛影响是多方面的。 这项研究涉及两名职业中期科学家（其中一名是女性）和一名年轻科学家之间的合作。 所有研究者将在本研究过程中培训本科生和研究生。 首席研究员准备充分利用NSF赞助的本科课程研究经验在他的机构。 这项研究有明确的连接到政策，保护和管理有关的外来物种引进的影响。 这种联系通过与大自然保护协会和东北研究合作社的合作得到加强。调查人员与跨国公司和国家经济资源中心之间的关系增加了将调查结果广泛传播给决策者和非政府组织的可能性，以最终使社会受益并了解公共资源的保护情况。