Integrating field methods and numerical models to quantify the links between larval transport, connectivity, and population dynamics

整合现场方法和数值模型来量化幼虫运输、连通性和种群动态之间的联系

• 批准号: 0829512
• 负责人: Elizabeth North
• 金额: $ 75.1万
• 依托单位: University of Maryland Center for Environmental Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-10-01 至 2014-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0829512&HistoricalAwards=false
• 关键词: Integrating; field; methods; numerical; models

This coupled field-and-modeling research project is designed to address fundamental, cutting-edge questions that will significantly enhance our understanding of physical-biological interactions in planktonic organisms and quantify how pelagic life stages influence population dynamics. Technological advances in field methodology and numerical modeling will be integrated and applied to investigate and compare how circulation patterns, larval transport, sub-population connectivity, and population dynamics of the Eastern oyster, Crassostrea virginica, respond to environmental variability and habitat alteration. This project will provide information that will significantly enhance the restoration and management of oysters. Physical-biological interactions are an integral part of understanding fish, bivalve, and crustacean early-life history and the processes that affect inter-annual variability in their recruitment to reproducing populations. The combined modeling and field approach builds on existing state-of-the-art models, it applies a new technology that will significantly advance our ability to investigate in-situ bivalve larvae dynamics, and it will generate critical information about the early life of oysters (timing of spawning, larval behavior) that is necessary for enhancing our understanding and prediction of recruitment processes. This research will also advance our understanding of population dynamics of organisms with a pelagic life stages by making quantitative links between larval transport and a full life-cycle model. In doing so, it will provide improved understanding of the inter-relationships between, and relative importance of, larval transport, the connectivity of different reef systems, and adult growth, mortality, and gamete production, and how these relationships are influenced by changes in physical conditions and habitat. Although focused on the oyster, Crassostrea virginica, the ecological studies and comparisons will result in a significant enhancement in our understanding of the interactions between physical conditions and a suite of bivalve species. This program will benefit society by providing new insights and understanding that will enhance fisheries management capabilities. The numerical tools developed will have the resolution appropriate for helping to guide oyster restoration programs, locate optimal sanctuaries (i.e., marine protected areas), and inform spatial management of oyster harvest. Although the quantitative tools and information generated will directly support oyster management and restoration activities of state and federal partners in Chesapeake Bay, the findings and tools developed in this project will be applicable to many other systems where bivalves comprise an important component of commercial and recreational fisheries. A PhD graduate student will be trained in field and numerical modeling research in this coupled field-and-modeling program. In addition to gaining a solid foundation in a cutting-edge field, the student will have the opportunity to develop science communication skills and interact with management agency representatives.

这一场和模型相结合的研究项目旨在解决基本的、前沿的问题，这些问题将大大加强我们对浮游生物的物理-生物相互作用的理解，并量化远洋生命阶段如何影响种群动态。将整合和应用野外方法学和数值模拟方面的技术进步，以研究和比较东方牡蛎的环流模式、幼虫运输、亚种群连通性和种群动态对环境变化和栖息地变化的反应。该项目将提供信息，大大加强牡蛎的恢复和管理。物理-生物相互作用是了解鱼类、双壳类和甲壳类早期生活史以及影响其补充到繁殖种群的年际变异性的过程的一个组成部分。这种建模和现场相结合的方法建立在现有最先进的模型基础上，它应用了一项新技术，将显著提高我们在现场调查双壳类幼虫动态的能力，并将生成有关牡蛎早期生命(产卵时间、幼虫行为)的关键信息，这对于增强我们对招募过程的理解和预测是必要的。这项研究还将通过在幼虫运输和全生命周期模型之间建立定量联系，促进我们对具有远洋生活期的生物种群动力学的理解。通过这样做，它将有助于更好地理解幼虫运输之间的相互关系和相对重要性、不同珊瑚礁系统的连通性、成虫生长、死亡率和配子产生，以及这些关系如何受到物理条件和生境变化的影响。虽然重点放在牡蛎上，但生态学研究和比较将大大加强我们对物理条件和一系列双壳类物种之间的相互作用的了解。该计划将提供新的见解和理解，从而提高渔业管理能力，从而造福社会。开发的数值工具将具有适当的分辨率，以帮助指导牡蛎恢复方案，确定最佳保护区(即海洋保护区)，并为牡蛎收获的空间管理提供信息。虽然产生的量化工具和信息将直接支持切萨皮克湾州和联邦合作伙伴的牡蛎管理和恢复活动，但本项目开发的结果和工具将适用于许多其他双壳类系统，在这些系统中，双壳类是商业和休闲渔业的重要组成部分。一名博士研究生将在这个耦合的场和建模程序中接受现场和数值建模研究方面的培训。除了在前沿领域获得坚实的基础外，学生还将有机会发展科学交流技能，并与管理机构代表互动。