Longitudinal variation in the physiology, growth and reproduction of white spruce at the Arctic treeline in Alaska

阿拉斯加北极林线白云杉生理、生长和繁殖的纵向变化

基本信息

  • 批准号:
    1204247
  • 负责人:
  • 金额:
    $ 68.09万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2012
  • 资助国家:
    美国
  • 起止时间:
    2012-09-01 至 2016-09-30
  • 项目状态:
    已结题

项目摘要

The position of the Arctic treeline is an important regulator of surface energy budgets, carbon cycling, habitat availability and subsistence resources in high latitude environments. Changes in the health and spatial extent of the arctic forest are largely governed by relationships among climate and the physiology, growth and reproductive success of the trees. Previous work along a longitudinal gradient in the Brooks Range, Alaska, showed a pattern of declining growth in response to rising temperatures from west to east. This study aims to uncover the processes underlying this trend and examine the implications for reproductive success and the establishment of new trees beyond the current treeline. Its goals are to measure and compare tree microclimates of the western, central and eastern Brooks Range; compare and contrast continuous measurements of white spruce canopy gas exchange over several growing seasons in the western, central and eastern Brooks Range in order to evaluate the relative importance of drought stress and cold soils at the arctic treeline in Alaska; make detailed measurements of the seasonality and magnitude of growth in all major organs of white spruce in the western, central and eastern Brooks Range, assess the potential for shifts in allocation and to more accurately evaluate current and future tree performance; and conduct a detailed study of longitudinal variation in seed production, seed quality, seedling establishment and seedling performance (physiology and growth) within the Brooks Range, as these demographic processes will largely determine whether a treeline will advance, remain static or retreat in response to climate change. Results of the study will inform policy makers and local residents of the likely outcomes of interactions between climate change and the health and spatial extent of the highly sensitive arctic forests of Alaska.The team will reach out to students and adults in rural and urban Alaska through four specific activities. They will extend an existing relationship with biology teachers at Kotzebue High School and visit their classrooms to introduce the importance of vegetation as a mediator of climate change and to share the results of previous and ongoing work in the area. They will provide opportunities for outstanding students from Kotzebue High School to join their research team in the field at the Kugururok site. They will arrange to be interviewed by Kotzebue Public Radio to inform the communities about their research activities and findings, and they will participate in a BLM Campbell Creek Science Center Fireside Chat series.
北极林线的位置是高纬度环境中地表能量收支、碳循环、栖息地可用性和生存资源的重要调节因素。北极森林的健康和空间范围的变化在很大程度上取决于气候与树木的生理、生长和繁殖成功之间的关系。之前在阿拉斯加州布鲁克斯山脉沿纵向梯度进行的研究显示,随着气温从西向东的上升,增长呈下降趋势。这项研究旨在揭示这一趋势背后的过程,并研究其对生殖成功和建立超出当前树线的新树的影响。其目标是测量和比较西部、中部和东部布鲁克斯山脉的树木小气候;比较和对比西部、中部和东部布鲁克斯山脉几个生长季白云杉树冠气体交换的连续测量,以评估阿拉斯加北极树线干旱胁迫和寒冷土壤的相对重要性;对西部、中部和东部布鲁克斯山脉所有主要白云杉器官生长的季节性和大小进行详细测量,评估分配变化的可能性,并更准确地评估当前和未来的树木表现;并对布鲁克斯山脉内种子生产、种子质量、苗木建立和苗木表现(生理和生长)的纵向变化进行详细研究,因为这些人口统计过程将在很大程度上决定林线是前进、保持不变还是随着气候变化而后退。研究结果将向政策制定者和当地居民通报气候变化与阿拉斯加高度敏感的北极森林的健康和空间范围之间相互作用的可能结果。该团队将通过四项具体活动接触阿拉斯加农村和城市的学生和成年人。他们将扩展与Kotzebue高中生物教师的现有关系,并访问他们的教室,介绍植被作为气候变化媒介的重要性,并分享该地区以往和正在进行的工作的成果。他们将为Kotzebue高中的优秀学生提供机会,加入他们在Kugururok现场的研究团队。他们将安排接受Kotzebue公共广播电台的采访,向社区通报他们的研究活动和发现,他们将参加BLM Campbell Creek科学中心炉边聊天系列活动。

项目成果

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Patrick Sullivan其他文献

Engaging First Peoples: A Review of Government Engagement Methods for Developing Health Policy
让原住民参与:政府参与制定卫生政策的方法回顾
  • DOI:
  • 发表时间:
    2016
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Alister Thorpe;K. Arabena;Patrick Sullivan;K. Silburn;K. Rowley
  • 通讯作者:
    K. Rowley
Causes and consequences of major depressive disorder: An encompassing Mendelian randomization study
重度抑郁症的原因和后果:一项全面的孟德尔随机化研究
  • DOI:
    10.1101/2024.05.21.24307678
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Joëlle A. Pasman;Jacob Bergstedt;A. Harder;Tong Gong;Ying Xiong;Sara Hägg;Fang Fang;J. Treur;Karmel W Choi;Patrick Sullivan;Yi Lu
  • 通讯作者:
    Yi Lu
Cutaneous Iridophoroma in an Argentine Horned Frog (Ceratophrys ornata)
阿根廷角蛙(Ceratophrys ornata)的皮肤虹膜瘤
40. BRAIN CELL TYPE SPECIFIC EQTLS AND SCHIZOPHRENIA
  • DOI:
    10.1016/j.euroneuro.2022.07.128
  • 发表时间:
    2022-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Shuyang Yao;Lisa Bast;José Martínez-López;Fatima Memic;Naomi Wray;Patrick Sullivan;Jens Hjerling-Leffler
  • 通讯作者:
    Jens Hjerling-Leffler
W91. GENE-ENVIRONMENT INTERACTION AND BRAIN NETWORKS IN THE PATHOPHYSIOLOGY OF EXTERNALIZING BEHAVIORS AND SUBSTANCE USE RISK
  • DOI:
    10.1016/j.euroneuro.2021.08.174
  • 发表时间:
    2021-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Bharath Holla;Biju Viswanath;Ganesan Venkatasubramanian;Ravi Muddashetty;Meera Purushottam;Sanjeev Jain;Gunter Schumann;Ryan Bogdan;Manuel Mattheisen;Patrick Sullivan;Arpana Agrawal;Vivek cVEDA Consortium; Benegal
  • 通讯作者:
    Benegal

Patrick Sullivan的其他文献

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{{ truncateString('Patrick Sullivan', 18)}}的其他基金

Collaborative Research: RAPID: Identifying the biogeochemical causes of sudden widespread metal loading in streams of the western Brooks Range, Alaska
合作研究:RAPID:确定阿拉斯加布鲁克斯山脉西部溪流中突然大范围金属负载的生物地球化学原因
  • 批准号:
    2325290
  • 财政年份:
    2023
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
LTREB: Long-Term Consequences of Asymmetric Warming at the Tundra-Taiga Interface
LTREB:苔原-针叶林交界处不对称变暖的长期后果
  • 批准号:
    2133494
  • 财政年份:
    2022
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
Collaborative Research: Soil temperature, mycorrhizal association and tree nutrition as determinants of divergent changes in tree growth and abundance in arctic Alaska.
合作研究:土壤温度、菌根关联和树木营养是北极阿拉斯加树木生长和丰度不同变化的决定因素。
  • 批准号:
    1748849
  • 财政年份:
    2018
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
MRI: Acquisition of a State-of-the-Art Water Isotope Analyzer to Monitor Changes in the Coupled Climate System and Water Cycle at High Latitudes
MRI:购买最先进的水同位素分析仪来监测高纬度地区耦合气候系统和水循环的变化
  • 批准号:
    1828786
  • 财政年份:
    2018
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
Collaborative Research: Winter snow depth as a driver of microbial activity, nutrient cycling, tree growth and treeline advance in the Arctic
合作研究:冬季积雪深度是北极微生物活动、养分循环、树木生长和林线推进的驱动因素
  • 批准号:
    1504538
  • 财政年份:
    2015
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
Collaborative Research: Linking belowground phenology and ecosystem function in a warming Arctic
合作研究:将变暖的北极的地下物候与生态系统功能联系起来
  • 批准号:
    1108425
  • 财政年份:
    2011
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
Canopy gas exchange and growth of white spruce near the Arctic treeline: confronting measurements with models along natural and experimental resource gradients
北极林线附近的树冠气体交换和白云杉的生长:用沿自然和实验资源梯度的模型进行测量
  • 批准号:
    0909155
  • 财政年份:
    2009
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
Collaborative Research: The Changing Seasonality of Tundra Nutrient Cycling: Implications for Ecosystem and Arctic System Functioning
合作研究:苔原养分循环的季节性变化:对生态系统和北极系统功能的影响
  • 批准号:
    0902184
  • 财政年份:
    2009
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant
PostDoctoral Research Fellowship
博士后研究奖学金
  • 批准号:
    0528748
  • 财政年份:
    2005
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Fellowship Award
SBIR PHASE I: Utilization of Deep Ocean Water for Water Desalination: The Hurricane Tower
SBIR 第一阶段:利用海洋深层水进行海水淡化:飓风塔
  • 批准号:
    9561408
  • 财政年份:
    1996
  • 资助金额:
    $ 68.09万
  • 项目类别:
    Standard Grant

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