U.S. GLOBEC: Cross-Frontal Distributions and Exchange of Zooplankton on Georges Bank
美国 GLOBEC:乔治滩上浮游动物的跨前沿分布和交换
基本信息
- 批准号:9806444
- 负责人:
- 金额:$ 33.15万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:1998
- 资助国家:美国
- 起止时间:1998-11-01 至 2002-10-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
U.S. GLOBEC: Cross-frontal distributions and exchange of zooplankton on Georges Bank Cross-frontal distributions and exchange of zooplankton on Georges Bank are a primary focus of Phase 3 of the U.S. GLOBEC Georges Bank program, which has the broader goal of understanding the response of marine populations to global climate change, especially interactions between zooplankton and fish. This proposal examines the cross-frontal exchange of zooplankton at two sites important to the biology of GLOBEC-targeted species: the Northeast Peak Front in March (coincident with expected inflow of the copepod Calanus finmarchicus and the presence of cod larvae and high predator abundance) and the Southern Flank Tidal Mixing Front in June (coincident with high concentrations of Calanus and predators). Questions addressed include the interaction between vertically-stratified zooplankton distributions and the cross-frontal exchange at different depths, the temporal variability of these interactions on diel, tidal, and fortnightly scales, and the effects over time of the repeated passage of tidal fronts at particular locations along a bathymetric slope. Zooplankton abundances and vertical distributions will be determined from a Lagrangian sampling scheme utilizing transects relative to frontal position conducted at different phases of the tidal cycle (semidiurnal and fortnightly), and will be related to hydrographic structure, tidal phase, and distance from the front. In a complementary Eulerian sampling scheme employing time series sampling at fixed locations along a bathymetric slope, zooplankton distributions and variability will be related to the time since frontal passage. Vertically-stratified MOCNESS tows will be used to collect zooplankton. Cross-frontal exchange of zooplankton (different species and lifestages with different vertical distributions) will be estimated from concentration gradients across the front at different depths and along isopycnal surfaces, using various estimates of flow and water exchange provided by physical oceanographers.
美国GLOBEC:乔治斯海岸浮游动物的跨锋分布和交换乔治海岸浮游动物的跨锋分布和交换是美国GLOBEC乔治斯银行计划第三阶段的主要重点,该计划的更广泛目标是了解海洋种群对全球气候变化的反应,特别是浮游动物与鱼类之间的相互作用。这项建议审查了对GLOBEC目标物种生物学很重要的两个地点浮游动物的跨锋交换:3月份的东北高峰锋(与预期的桡足类Calanus finmarchicus流入和鳕鱼幼体的存在以及捕食者的高度丰富一致)和6月份的南侧潮汐混合锋(与Calanus和捕食者的高度集中一致)。所涉及的问题包括浮游动物垂直分层分布与不同深度的跨锋面交换之间的相互作用,这些相互作用在双周、潮汐和双周尺度上的时间变异性,以及沿等深坡度的特定位置潮汐锋重复经过的影响。浮游动物丰度和垂直分布将根据拉格朗日采样方案确定,该方案利用在潮汐周期的不同阶段(半日和每两周)进行的相对于锋面位置的横断面,并将与水文结构、潮汐阶段和与锋面的距离有关。在沿水深坡度的固定位置采用时间序列采样的互补欧拉采样方案中,浮游动物的分布和变异性将与锋面通过以来的时间有关。垂直分层的MOCNESS拖网将用于采集浮游动物。浮游动物的跨锋面交换(不同物种和生活方式具有不同的垂直分布)将利用物理海洋学家提供的各种流动和水交换估计,从锋面不同深度和沿等径面的浓度梯度估算。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Karen Wishner其他文献
Karen Wishner的其他文献
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{{ truncateString('Karen Wishner', 18)}}的其他基金
Collaborative Research: A metabolic index to predict the consequences of climate change for midwater ecosystems
合作研究:预测气候变化对中层水域生态系统影响的代谢指数
- 批准号:
1459243 - 财政年份:2015
- 资助金额:
$ 33.15万 - 项目类别:
Standard Grant
Collaborative Research: Zooplankton in the Redoxcline of the Cariaco Basin: Impact on Biogeochemical Cycling
合作研究:卡里亚科盆地氧化还原碱中的浮游动物:对生物地球化学循环的影响
- 批准号:
0526502 - 财政年份:2006
- 资助金额:
$ 33.15万 - 项目类别:
Standard Grant
US GLOBEC: Interaction of Zooplankton Vertical Migration with Episodic Mesoscale Advective Features: Impacts on Population Retention and Loss
US GLOBEC:浮游动物垂直迁移与间歇性中尺度平流特征的相互作用:对种群保留和损失的影响
- 批准号:
9632746 - 财政年份:1996
- 资助金额:
$ 33.15万 - 项目类别:
Continuing Grant
Collaborative Research: JGOFS (Arabian Sea): Effects of the Oxygen Minimum Zone on Mesozooplankton Distributions and Food Webs
合作研究:JGOFS(阿拉伯海):最低含氧区对中生浮游生物分布和食物网的影响
- 批准号:
9310591 - 财政年份:1994
- 资助金额:
$ 33.15万 - 项目类别:
Continuing Grant
Ingestion Rates and Trophic Relationships of Deep-Sea Benthic Boundary Layer Zooplankton
深海底栖边界层浮游动物的摄食率和营养关系
- 批准号:
8716564 - 财政年份:1988
- 资助金额:
$ 33.15万 - 项目类别:
Continuing Grant
Zooplankton Aggregations in the Great South Channel and their Interactions with Right Whales
大南海峡的浮游动物聚集及其与露脊鲸的相互作用
- 批准号:
8711847 - 财政年份:1987
- 资助金额:
$ 33.15万 - 项目类别:
Continuing Grant
Ingestion Rates and Trophic Relationships of Deep-Sea Benthic Boundary Layer Zooplankton
深海底栖边界层浮游动物的摄食率和营养关系
- 批准号:
8608846 - 财政年份:1986
- 资助金额:
$ 33.15万 - 项目类别:
Standard Grant
Grazing Rates and Food of Deep-Sea Benthic Boundary Layer Zooplankton
深海底栖边界层浮游动物的放牧率和食物
- 批准号:
8300041 - 财政年份:1983
- 资助金额:
$ 33.15万 - 项目类别:
Standard Grant
Deep-Sea Benthic Boundary Layer Biology: Zooplankton Trophodynamics
深海底栖边界层生物学:浮游动物营养动力学
- 批准号:
8207922 - 财政年份:1982
- 资助金额:
$ 33.15万 - 项目类别:
Standard Grant
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美国GLOBEC计划的科学进展和成就——专家会议
- 批准号:
1128156 - 财政年份:2011
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