Distribution and Transport of Larvae of Inner-Shelf Benthic Invertebrates

内陆架底栖无脊椎动物幼虫的分布和运输

• 批准号: 9633025
• 负责人: Steven Lentz
• 金额: $ 66.78万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-01 至 2000-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633025&HistoricalAwards=false
• 关键词: Distribution; Transport; Larvae; Inner; Shelf

This research will be conducted under the auspices of the Coastal Ocean Processes (CoOP) program and is a continuation of a previously funded research project. Funding is provided for an integrated, interdisciplinary analysis and synthesis of extensive physical and biological samples and data collected off Duck, North Carolina in 1994 during the CoOP project, entitled "Suspension, cross-shelf transport, and deposition of planktonic larvae of inner-shelf benthic invertebrates." The field program provided simultaneous and comprehensive sampling of physical and biological patterns that comprise a unique resource from which investigators will derive a greater understanding of processes (both physical and behavioral) influencing the distribution and transport of invertebrate larvae over the inner continental shelf, as well as detailed knowledge of physical processes on the inner shelf. Sample analysis and data integration will continue on this unique data set in order to achieve the basic scientific objectives of the originally proposed research: (1) Do larval distributions show water mass or interface (i.e., fronts or clines) affinity? (2) Are there large changes in larval distributions during wind-driven, cross-shelf circulation (i.e., upwelling and downwelling)? (3) Does the freshwater plume from the Chesapeake Bay influence larval distributions on the inner shelf, both in terms of species composition (i.e., as a source of estuarine larvae) and of inner-shelf circulation? (4) Is there a semi-diurnal (i.e., tidal) variation in near-bottom larval concentrations? (5) Is there a correlation between near-bottom larval distributions and turbidity profiles? Do near-bottom larval distributions change during resuspension events and how might these changes affect larval transport? The work will be accomplished by six different teams of investigators at five separate institutions as a collaborative interdisciplinary effort.

这项研究将在沿海海洋过程（CoOP）计划的主持下进行，是以前资助的研究项目的延续。 1994年，在题为“大陆架内底栖无脊椎动物浮游幼虫的悬浮、跨大陆架迁移和沉积”的合作项目期间，为对在北卡罗来纳州达克外海收集的大量物理和生物样本及数据进行综合、跨学科分析和综合提供了资金。“实地方案提供了对物理和生物模式的同时和全面的采样，这些模式构成了一个独特的资源，调查人员将从中更好地了解影响无脊椎动物幼虫在内大陆架分布和运输的过程（物理和行为），以及内大陆架物理过程的详细知识。 样本分析和数据整合将继续对这一独特的数据集，以实现最初提出的研究的基本科学目标：（1）幼虫分布是否显示水团或界面（即，（fronts or clines）亲和力？(2)在风驱动的跨大陆架环流（即，上升流和下降流）？(3)来自切萨皮克湾的淡水羽流是否影响了内大陆架的幼虫分布，无论是在物种组成方面（即，作为河口幼虫的来源）和内陆架环流？(4)有没有一个半昼夜（即，潮）的变化在近底幼虫浓度？(5)近底幼体分布与浊度剖面之间是否存在相关性？在再悬浮事件期间，近底幼虫的分布是否发生变化，这些变化如何影响幼虫的运输？ 这项工作将由五个不同机构的六个不同的调查小组完成，作为一项跨学科的合作努力。