Collaborative Research: Changing Seasonality of the Arctic: Alteration of Production Cycles and Trophic Linkages in Response to Changes in Sea Ice and Upper Ocean Physics

合作研究:北极季节性的变化:生产周期和营养联系的变化响应海冰和上层海洋物理的变化

基本信息

  • 批准号:
    0901926
  • 负责人:
  • 金额:
    $ 10.85万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-08-15 至 2013-07-31
  • 项目状态:
    已结题

项目摘要

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Significant seasonal changes in arctic sea ice have been observed in recent years, characterized by unprecedented summer melt-back because of the lengthening of the summer melt season with earlier melt and later freeze onsets. As summer sea ice extent shrinks to record low levels, the peripheral seas of the Arctic Ocean are exposed much earlier to atmospheric surface heat flux, resulting in longer and warmer summers with more oceanic heat absorption. The changing seasonality in the arctic ice/ocean system will alter the timing, magnitude, duration, and pattern of marine production cycles, by disrupting key trophic linkages and feedbacks in planktonic food webs. These alterations will have consequences on the structure of arctic marine ecosystems with reverberations through the entire arctic system up to and including humans. It is, thus, important to understand the changes in the patterns of seasonality in the arctic physical and biological system. The PIs propose to investigate future changes in the seasonal linkages and interactions among arctic sea ice, the water column, and the marine production cycles and trophic structure as an integrated system. Their investigation will target the following seasonality hypotheses:1) Changes in the timing of spring sea ice retreat will cause a mismatch in the timing of primary and secondary production such that the plankton community size structure is altered. That in turn will modify the utilization of primary production and the availability of large zooplankton prey for upper trophic levels (e.g., whales, fish).2) Closer coupling of phytoplankton and zooplankton production cycles will result in a reduction in the magnitude of the spring bloom over productive shelves, greater utilization of primary production by water column consumers and a reduction in its export to the benthos.3) A longer growing season, which might include a secondary production peak later in summer/early fall, will permit the colonization of the Arctic Ocean by subarctic species that presently are unable to persist there because of the short duration of the growing season. These hypotheses will be explored by synthesizing model estimates and satellite and field observations. The PIs will use the existing coupled pan-Arctic Biology/Ice/Ocean Modeling and Assimilation System (BIOMAS), together with observations, to strengthen their understanding of the integrated arctic system of sea ice, ocean, and the marine production cycles. A series of model hindcasts, sensitivity studies, and future scenario simulations will be conducted to identify seasonally sensitive linkages and to test their hypotheses
该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。近年来,北极海冰发生了显著的季节性变化,其特征是前所未有的夏季融回,因为夏季融融季延长,融化时间提前,冻结时间推迟。随着夏季海冰范围缩小到创纪录的低水平,北冰洋的外围海洋更早地暴露于大气表面热通量,导致夏季更长,更温暖,海洋吸收更多的热量。北极冰/海洋系统的季节性变化将改变海洋生产周期的时间、规模、持续时间和模式,破坏关键的营养联系和浮游食物网的反馈。这些变化将对北极海洋生态系统的结构产生影响,并影响到整个北极系统,包括人类。因此,了解北极物理和生物系统中季节性模式的变化是很重要的。研究所建议调查北极海冰、水柱、海洋生产周期和营养结构作为一个综合系统之间的季节性联系和相互作用的未来变化。他们的调查将针对以下季节性假设:1)春季海冰退缩时间的变化将导致初级和次级生产时间的不匹配,从而改变浮游生物群落大小结构。这反过来又会改变初级生产力的利用和高营养级大型浮游动物猎物的可用性(例如,鲸鱼,鱼类)。2)浮游植物和浮游动物生产周期的紧密耦合将导致春季生产架上水华的规模减少,水柱消费者更多地利用初级生产,并减少其向底栖生物的出口。3)更长的生长季节,其中可能包括夏季晚些时候/初秋的第二次生产高峰,将允许亚北极物种在北冰洋定居,目前由于生长季节持续时间短而无法在那里生存。将通过综合模型估计值以及卫星和实地观测来探讨这些假设。研究人员将利用现有的泛北极生物学/冰/海洋模拟和同化系统(BIOMAS)以及观测,加强他们对海冰、海洋和海洋生产周期综合北极系统的了解。将进行一系列模型后报、敏感性研究和未来情景模拟,以确定季节性敏感联系并检验其假设

项目成果

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Robert Campbell其他文献

Glycine and experimental spinal spasticity
甘氨酸与实验性脊柱痉挛
  • DOI:
    10.1212/wnl.29.2.262
  • 发表时间:
    1979
  • 期刊:
  • 影响因子:
    9.9
  • 作者:
    P. Hall;James E. Smith;John Lane;T. Mote;Robert Campbell
  • 通讯作者:
    Robert Campbell
THE FIRST-EVER PEDIATRIC APPROPRIATE USE CRITERIA IMPLEMENTATION PROJECT: A LARGE MULTICENTER QUALITY INITIATIVE
  • DOI:
    10.1016/s0735-1097(15)60484-3
  • 发表时间:
    2015-03-17
  • 期刊:
  • 影响因子:
  • 作者:
    Ritu Sachdeva;Wyman Lai;Joseph Allen;Oscar Benavidez;Robert Campbell;Benjamin Eidem;Lara Gold;Michael Kelleman;Leo Lopez;Courtney E. McCracken;Kenan Stern;Rory Weiner;Elizabeth Welch;Pamela Douglas
  • 通讯作者:
    Pamela Douglas
CARDIAC MAGNETIC RESONANCE IN HYPERTROPHIC CARDIOMYOPATHY: APPLICATION TO PEDIATRIC PATIENTS
  • DOI:
    10.1016/s0735-1097(12)61096-1
  • 发表时间:
    2012-03-27
  • 期刊:
  • 影响因子:
  • 作者:
    Tim Slesnick;W. James Parks;Peter Fischbach;Patrick Frias;Robert Campbell;Erin Demo;Denver Sallee;Margaret Strieper
  • 通讯作者:
    Margaret Strieper
Chapter IV. The Petland Hills
  • DOI:
    10.1016/s0016-7878(14)80027-8
  • 发表时间:
    1914-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Robert Campbell
  • 通讯作者:
    Robert Campbell
Investigating Glycosylation Inhibition in Chronic Myeloid Leukemia: A Literature Review
  • DOI:
    10.1016/j.ajpe.2024.101217
  • 发表时间:
    2024-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Norymar Ayala Concepcion;Robert Campbell;Najlaa Alsini;Zein Dib;Binyaz IIavia
  • 通讯作者:
    Binyaz IIavia

Robert Campbell的其他文献

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{{ truncateString('Robert Campbell', 18)}}的其他基金

Collaborative Research: Taking the Pulse of the Arctic Ocean - A US Contribution to the International Synoptic Arctic Survey
合作研究:把握北冰洋的脉搏——美国对国际北极天气调查的贡献
  • 批准号:
    2052626
  • 财政年份:
    2021
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Continuing Grant
Collaborative Research: The Role of Planktonic Lower Trophic Levels in Carbon and Nitrogen Transformations in the Central Arctic, a MOSAiC Proposal
合作研究:浮游低营养级在北极中部碳和氮转化中的作用,MOSAiC 提案
  • 批准号:
    1824414
  • 财政年份:
    2018
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: The Importance of Shelf Break Upwelling to Upper Trophic Level Ecology in the Western Beaufort Sea
合作研究:陆架破裂上升流对波弗特海西部高营养层生态的重要性
  • 批准号:
    1603321
  • 财政年份:
    2016
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: Formation and Persistence of Benthic Biological Hotspots in the Pacific Arctic
合作研究:北极太平洋底栖生物热点的形成和持续
  • 批准号:
    1603466
  • 财政年份:
    2016
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: Changes in Arctic Sea Ice and their Impact on Timing of Life History and Production of Zooplankton
合作研究:北极海冰的变化及其对浮游动物生命史和生产时间的影响
  • 批准号:
    1417339
  • 财政年份:
    2014
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative research: Copepod life-history and lipid strategy in a changing Arctic - A new trait-based approach to data synthesis, modeling, and end-to-end integration
合作研究:不断变化的北极中的桡足类生活史和脂质策略 - 一种基于性状的新数据合成、建模和端到端集成方法
  • 批准号:
    1417224
  • 财政年份:
    2014
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: Mechano-Lipidomics and Mechano-Cytosis of Drug Delivery Liposomes
合作研究:药物递送脂质体的机械脂质组学和机械胞质作用
  • 批准号:
    1232339
  • 财政年份:
    2012
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: Linking sea-ice retreat to plankton community structure and function in the Bering Sea: Data synthesis, biophysical modeling, and multi-decadal projection
合作研究:将海冰退缩与白令海浮游生物群落结构和功能联系起来:数据合成、生物物理建模和多十年预测
  • 批准号:
    1107842
  • 财政年份:
    2011
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: Annual Observations of the Biological and Physical Marine Environment in the Chukchi and nearshore Beaufort Seas near Barrow, AK
合作研究:对阿拉斯加州巴罗附近的楚科奇海和近岸波弗特海生物和物理海洋环境的年度观测
  • 批准号:
    1022139
  • 财政年份:
    2010
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant
Collaborative Research: A winter expedition to explore the biological and physical conditions of the Bering, Chukchi, and southern Beaufort Seas
合作研究:冬季探险,探索白令海、楚科奇海和波弗特海南部的生物和物理条件
  • 批准号:
    0909006
  • 财政年份:
    2009
  • 资助金额:
    $ 10.85万
  • 项目类别:
    Standard Grant

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