Linking Forest Regeneration, Plant Distributions, and Ecotone Dynamics in Changing Mountain Environments

将不断变化的山区环境中的森林再生、植物分布和生态交错带动态联系起来

• 批准号: 1759724
• 负责人: Martin Dovciak
• 金额: $ 32.3万
• 依托单位: SUNY College of Environmental Science and Forestry
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-05-01 至 2023-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1759724&HistoricalAwards=false
• 关键词: Linking; Forest; Regeneration; Plant; Distributions

This research project will investigate how distributions of tree species and boundaries between deciduous and coniferous ecosystems respond to changing environmental conditions across multiple spatial scales The project will expand current knowledge about the mechanisms through which tree seedlings colonize new areas or experience poor recruitment in other areas by testing hypotheses that integrate concepts from theoretical ecology, biogeography of climatic gradients, and invasion ecology. Using predictive modeling, the project will provide new insights about strategies for adapting to changing climatic conditions in forests that provide valuable ecological and socioeconomic services in the northeastern United States. Research findings will be disseminated to regional forest management agencies and the general public via presentations or exhibits in regional nature visitor centers, meetings of professional societies and public interest groups, and a public-access website. The project also will contribute to improved education in science, technology, engineering, and mathematics (STEM) fields through graduate training and expansion of undergraduate participation in research.Mountain regions contain spatially compressed elevational gradients in climate and associated biological communities. As a result, they are vulnerable to environmental changes. Montane ecotones, such as the transition between low-elevation deciduous and high-elevation coniferous forests, are particularly conducive to detecting changes in species distributions. Many high-elevation treelines across the globe have advanced upslope in recent decades in direct response to increasing temperature and growing season length. The investigators will quantify ongoing demographic shifts in tree species to provide an early indicator of potential future changes along elevational climatic gradients of northeastern United States. They will also analyze how the diversity and composition of forest understories change along elevational climatic gradients, and they will determine how forest understory composition and diversity affect the establishment and recruitment of tree seedlings of various species along spatial environmental gradients. Understory plant community composition, light environment, microclimate, and tree seedling banks will be characterized and analyzed in closed canopy settings and in forest gaps. Size-class distributions of tree species over elevation will be analyzed using logistic models. Understory plant diversity and compositional gradients will be characterized with generalized linear models (GLM) and non-metric multidimensional scaling, and GLM-based tree regeneration models will be developed for each major tree species relative to the environmental gradients and understory vegetation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该研究项目将调查落叶和针叶性生态系统之间的分布以及在多个空间尺度上不断变化的环境条件的反应。项目将扩大有关树幼苗在新领域或在其他领域中经历不良招募的机制的知识，通过验证从理论生态学的概念，生物学级别的概念，并在其他领域中经历其他领域的招聘，并逐渐成熟。 使用预测建模，该项目将提供有关适应不断变化的森林气候状况的策略的新见解，这些森林在美国东北部提供了宝贵的生态和社会经济服务。 研究发现将通过区域自然游客中心，专业社会和公共利益群体的会议以及公共访问网站中的演讲或展览来传播到区域森林管理机构和公众。 该项目还将通过研究生培训和本科参与研究的扩展来改善科学，技术，工程和数学（STEM）领域的教育。山区包含气候和相关生物学社区中空间压缩的高度梯度。 结果，它们容易受到环境变化的影响。 山地生物酮，例如低海拔落叶和高海拔针叶林之间的过渡，特别有利于检测物种分布的变化。 在近几十年以来，全球许多高海拔的树木在全球范围内都提高了坡道，以直接响应温度和生长季节的长度。 研究人员将量化树木种类正在进行的人口变化，以提供早期的指标，表明沿美国东北部海拔气候梯度的未来变化。 他们还将分析森林底层的多样性和组成如何沿着高度气候梯度变化，并将确定森林的植物组成和多样性如何影响沿空间环境梯度的各种物种的树幼苗的建立和募集。 在封闭的树冠环境和森林间隙中，将对植物群社区组成，轻环，微气候和树幼苗库进行表征和分析。 将使用逻辑模型分析树种高度的大小类别。 Understory plant diversity and compositional gradients will be characterized with generalized linear models (GLM) and non-metric multidimensional scaling, and GLM-based tree regeneration models will be developed for each major tree species relative to the environmental gradients and understory vegetation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

项目成果

Montane Temperate-Boreal Forests Retain the Leaf Economic Spectrum Despite Intraspecific Variability

尽管存在种内变异，山地温带-北方森林仍保留叶经济谱

• DOI: 10.3389/ffgc.2021.754063
• 发表时间: 2022
• 期刊: Frontiers in Forests and Global Change
• 影响因子: 3.2
• 作者: Hecking, Matthew J.;Zukswert, Jenna M.;Drake, John E.;Dovciak, Martin;Burton, Julia I.
• 通讯作者: Burton, Julia I.

Characterizing Canopy Openness Across Large Forested Landscapes Using Spherical Densiometer and Smartphone Hemispherical Photography

• DOI: 10.1093/jofore/fvab046
• 发表时间: 2021-08
• 期刊: Journal of Forestry
• 影响因子: 2.3
• 作者: Katie L Beeles;J. Tourville;M. Dovciak

Bryophytes in fir waves: Forest canopy indicator species and functional diversity decline in canopy gaps

• DOI: 10.1111/jvs.12718
• 发表时间: 2019-03
• 期刊: Journal of Vegetation Science
• 影响因子: 2.8
• 作者: Monica B. Berdugo;M. Dovciak

Sentinel Research Sites in Global Change Research: Whiteface Mountain, New York

全球变化研究哨兵研究点：纽约怀特菲斯山

• DOI: 10.1656/045.028.s1104
• 发表时间: 2021
• 期刊: Northeastern Naturalist
• 影响因子: 0.4
• 作者: Wason, Jay;Battles, John;Berdugo, Monica B.;Casson, Paul;Tourville, Jordon;Dovciak, Martin
• 通讯作者: Dovciak, Martin

Acidic Deposition and Climate Warming as Drivers of Tree Growth in High-Elevation Spruce-Fir Forests of the Northeastern US

• DOI: 10.3389/ffgc.2019.00063
• 发表时间: 2019-10
• 期刊: Frontiers in Forests and Global Change
• 影响因子: 3.2
• 作者: J. Wason;C. Beier;J. Battles;M. Dovciak