Recruitment dynamics in fish: population consequences of trait-mediated tradeoffs and harvest

鱼类的补充动态：性状介导的权衡和收获的种群影响

• 批准号: 155327-2007
• 负责人: Post, John
• 金额: $ 2.64万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=476030
• 关键词: Recruitment; dynamics; fish; population; consequences

The abundance of fish and many other organisms tend to vary substantially over time within populations, and among populations. This variation often impacts other species within the communities and ecosystems that they inhabit. It is of course also important to humankind, particularly if the species is one that we exploit for food, or if it is a "pest" species. My research is aimed at understanding the biological processes that lead to this variability. In fish populations, much of this variability originates in the early life stages that are particularly susceptible to predators and the vagaries of the environment. Therefore, variability in survival of these young life stages is reflected in older life stages. The objectives of the research proposed here include: (1) understanding the ecological and environmental processes that lead to survival of the young stages of fish populations, (2) understanding of how variation in early survival feeds back to variability at adult life stages and (3) how we might manage fisheries harvest in ways that ensure viable populations in the future.

鱼类和许多其他生物的丰度往往随着时间的推移在种群内和种群之间发生很大变化。这种变化往往会影响它们所居住的社区和生态系统中的其他物种。当然，这对人类也很重要，特别是如果该物种是我们用来食用的物种，或者如果它是一种“有害”物种。我的研究旨在了解导致这种变异性的生物过程。在鱼类种群中，这种变异性大部分起源于生命早期阶段，特别容易受到捕食者和环境变幻莫测的影响。因此，这些年轻生命阶段的存活率变化反映在老年生命阶段。这里提出的研究目标包括：（1）了解导致鱼类种群幼期存活的生态和环境过程，（2）了解早期存活的变化如何反馈到成年生命阶段的变化，以及（3）我们如何管理渔业捕捞，以确保未来的种群。