LTREB Renewal: Multiscale effects of climate variability and change on hydrologic regimes, ecosystem function, and community structure in a desert stream and its catchment

LTREB 更新:气候变率和变化对沙漠溪流及其流域的水文状况、生态系统功能和群落结构的多尺度影响

基本信息

  • 批准号:
    1457227
  • 负责人:
  • 金额:
    $ 45万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2015
  • 资助国家:
    美国
  • 起止时间:
    2015-03-15 至 2021-08-31
  • 项目状态:
    已结题

项目摘要

River and wetland ecosystems provide important ecosystem services that are determined by climate, such as water for human uses and habitat support for fish and wildlife. In southwestern deserts of the United States, years of extreme drought often follow years of very wet conditions, thus it is impossible to define river ecosystem services in terms of average conditions. In fact, high variability is an apt descriptor of the hydrologic regimes for streams in this region. In this project, researchers are using new statistical techniques that describe hydrological regimes, coupled with long-term measurements of stream structure and processes, to understand how shifts in climate and river discharge regimes on many time scales will influence the ecosystem. The research will focus on factors that explain why the abundance and distribution of wetland plants and the degree of nitrogen limitation vary dramatically among years. Also, the variation among years in patterns of change after spring floods - in primary production, nutrient retention, and community composition (of invertebrates and plants)- will be related to within- and among-year variation in hydrology, to determine the impact of regimes on these successional patterns. Finally, an interdisciplinary team of collaborators will reevaluate stream ecosystem models and test new models using long-term data from this and other desert streams. This research will advance synthesis of long-term data from desert streams and advance understanding in ways that can contribute to the general theory of stability of multiple ecosystem states. A graduate student-led workshop will give students experience in using long-term databases and foster collaborative interactions. Activities of a collaboratory will expand the coupling of innovative hydrologic time-series analyses with ecological data. The database for this well-known stream ecosystem will be extended to more than 40 years and made available to the scientific and management community, potentially informing management in a highly variable environment where stressors of climate change and population growth are converging.
河流和湿地生态系统提供由气候决定的重要生态系统服务,例如供人类使用的水以及为鱼类和野生动物提供栖息地支持。在美国西南部的沙漠中,极端干旱的年份往往伴随着非常潮湿的年份,因此不可能根据平均条件来定义河流生态系统的服务。事实上,高变异性是该地区河流水文状况的恰当描述。在这个项目中,研究人员正在使用新的统计技术来描述水文制度,再加上对河流结构和过程的长期测量,以了解气候和河流排放制度在许多时间尺度上的变化将如何影响生态系统。研究将集中于解释为什么湿地植物的丰度和分布以及氮限制程度在不同年份之间变化巨大的因素。此外,春洪后变化模式的年际变化——初级生产、营养保持和群落组成(无脊椎动物和植物)——将与水文的年内和年内变化有关,以确定各种制度对这些演替模式的影响。最后,一个跨学科的合作团队将重新评估河流生态系统模型,并使用来自这条和其他沙漠河流的长期数据测试新模型。这项研究将促进对来自沙漠河流的长期数据的综合,并促进对多种生态系统状态稳定性的一般理论的理解。研究生主导的研讨会将给予学生使用长期数据库的经验,并促进协作互动。一个合作实验室的活动将扩大创新性水文时间序列分析与生态数据的耦合。这一众所周知的河流生态系统的数据库将扩展到40多年,并提供给科学和管理界,在气候变化和人口增长的压力因素正在汇聚的高度变化的环境中,有可能为管理提供信息。

项目成果

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Nancy Grimm其他文献

Roots of Caring, Sharing and Helping: The Development of Prosocial Behavior in Children
关怀、分享和帮助的根源:儿童亲社会行为的发展
  • DOI:
    10.1176/appi.psychotherapy.1979.33.2.321
  • 发表时间:
    1979
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Nancy Grimm
  • 通讯作者:
    Nancy Grimm
Rearticulating the Work of the Writing Center.
重新阐明写作中心的工作。
Co-producing new knowledge systems for resilient and just coastal cities: A social-ecological-technological systems framework for data visualization
  • DOI:
    10.1016/j.cities.2024.105513
  • 发表时间:
    2025-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Mathieu Feagan;Tischa A. Muñoz-Erickson;Robert Hobbins;Kristin Baja;Mikhail Chester;Elizabeth M. Cook;Nancy Grimm;Morgan Grove;David M. Iwaniec;Seema Iyer;Timon McPhearson;Pablo Méndez-Lázaro;Clark Miller;Daniel Sauter;William Solecki;Claudia Tomateo;Tiffany Troxler;Claire Welty
  • 通讯作者:
    Claire Welty
Addressing Racial Diversity in a Writing Center: Stories and Lessons from Two Beginners
在写作中心解决种族多样性问题:两个初学者的故事和教训
  • DOI:
  • 发表时间:
    2002
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Nancy G. Barrón;Nancy Grimm
  • 通讯作者:
    Nancy Grimm

Nancy Grimm的其他文献

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{{ truncateString('Nancy Grimm', 18)}}的其他基金

IRES Track 1: Nature-Based Solutions Research in Urban Latin America: International Research Experience for Students (NBS-RULA-IRES)
IRES 轨道 1:拉丁美洲城市基于自然的解决方案研究:学生的国际研究经验 (NBS-RULA-IRES)
  • 批准号:
    2107545
  • 财政年份:
    2021
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
RAPID: Indirect impacts of a novel wildfire on a well-studied desert stream: connectivity, carbon, and communities
RAPID:一场新型野火对经过深入研究的沙漠溪流的间接影响:连通性、碳和社区
  • 批准号:
    2040194
  • 财政年份:
    2020
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
Collaborative Research: Accel-Net: Nature-Based Solutions for Urban Resilience in the Anthropocene (NATURA)
合作研究:Accel-Net:人类世城市复原力的自然解决方案(NATURA)
  • 批准号:
    1927468
  • 财政年份:
    2019
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
SCC-Planning: Building resilient coastal cities through smart and connected communities
SCC-规划:通过智能和互联社区建设有复原力的沿海城市
  • 批准号:
    1737626
  • 财政年份:
    2017
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
IRES: Interdisciplinary student research on urban resilience in Latin America
IRES:拉丁美洲城市复原力的跨学科学生研究
  • 批准号:
    1658731
  • 财政年份:
    2017
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
COLLABORATIVE RESEARCH: Defining Stream Biomes to Better Understand and Forecast Stream Ecosystem Change
合作研究:定义河流生物群落以更好地理解和预测河流生态系统变化
  • 批准号:
    1442522
  • 财政年份:
    2015
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
CAP3: Urban Sustainability in the Dynamic Environment of Central Arizona, USA
CAP3:美国亚利桑那州中部动态环境中的城市可持续性
  • 批准号:
    1026865
  • 财政年份:
    2010
  • 资助金额:
    $ 45万
  • 项目类别:
    Continuing Grant
LTREB: Multi-scale effects of climate variability and change on hydrologic regimes, ecosystem function, and community structure in a desert stream and its catchment
LTREB:气候变率和变化对沙漠溪流及其流域的水文状况、生态系统功能和群落结构的多尺度影响
  • 批准号:
    0918262
  • 财政年份:
    2009
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
Collaborative Research: Impacts of urbanization on nitrogen biogeochemistry in xeric ecosystems
合作研究:城市化对干旱生态系统氮生物地球化学的影响
  • 批准号:
    0918457
  • 财政年份:
    2009
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant
Dissertation Research:The Fate of Nitrate in Stormwater Retention Basins in an Arid Metropolitan Area
论文研究:干旱大都市地区雨水滞留盆地中硝酸盐的命运
  • 批准号:
    0808524
  • 财政年份:
    2008
  • 资助金额:
    $ 45万
  • 项目类别:
    Standard Grant

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