A breadth of discovery: aquatic organisms and the thermal integral; right whales and risk and food; ecosystem biomass spectra; and particle tracing

广泛的发现：水生生物和热积分；

• 批准号: 183728-2009
• 负责人: Taggart, Christopher
• 金额: $ 2.33万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=522946
• 关键词: breadth; discovery; aquatic; organisms; thermal

This "Discovery" proposal addresses 4 research foci involving 3 PhD students and 3 MSc students over the next 5 years. **(1) Advance our research related to the growing degree day metric (GDD) by addressing: a) size-at-age variation in marine ectotherms by using the GDD metric to diagnose size-selective fishing among a large range of exploited stocks; i.e. diagnose how size-selective fishing results in reduced size-at-age commensurate with earlier/smaller maturation, and b) by using the GDD metric to explaining size-at-age variation across a taxonomic range of aquatic organisms (beyond fishes) including molluscs, crustaceans, echinoderms, etc., as well as reptiles and amphibians. **(2) Complete research involving the endangered right whale by: a) estimating the spatial variation in energy density of zooplankton food for right whales within Roseway Basin, b) using a 20-year time series of historical plankton samples from the Fundy and Roseway habitats to determine whether inter-annual variation in food energy density can explain variation in whale occupancy, condition and reproduction, c) determining how spatial and temporal variation in the food within each habitat can be attributed to hydrographic properties and circulation, and d) by completing our research on quantifying spatial and temporal risk to right whales of lethal encounters with vessels and fishing gear where the primary task involves state-space models to estimate whale movements among and between major habitats; these results will also serve to strengthen the other analyses above. **(3) Test biomass spectrum models in their ability to explaining spatial and seasonal variation in the ecological structure and functioning of the Northumberland Strait ecosystem with an emphasis on bottom up and top down processes. **(4) Use particle tracing to determine the fate of invasive species from ballast water discharge in freshwater systems and to address larval lobster "connectivity" and source-sink dispersion and transport in St. Georges Bay and within the Northumberland Strait.

该“发现”提案介绍了4个研究重点，其中涉及3名博士学位学生和3名MSC学生。 **（1）通过解决：a）通过使用GDD指标来诊断大量剥削股票中的大小选择性捕鱼，提高了与增长学度日度量度量（GDD）有关的研究；即，诊断尺寸选择性捕鱼是如何通过使用GDD指标来解释跨分类生物生物（包括Molluscs，crustaceans，crustaceans，crustaceans，echinoderms，echinoderms等）来解释跨年龄范围的大小变化来诊断与早期/较小的年龄相称的尺寸降低，b）b）通过使用GDD指标来解释大小的变化。 **（2）完整的研究，涉及濒临灭绝的右鲸鱼：a）估计浮游动物的浮游食物能量密度的空间变化，用于玫瑰道盆内的右鲸鱼，b）b）使用20年的历史浮游生物样本中的20年时间序列，来自Fundy和Roseway栖息地的历史浮游生物样本，以确定食物的临时变化和依次的变化，并确定临时的变化，并依赖于何种变化。每个栖息地中的食物可以归因于水文特性和循环，d）通过完成我们对量化空间和时间风险的研究，以与船只和渔具的致死鲸鱼的正确鲸鱼，其中主要任务涉及国家空间模型以估计主要栖息地之间和之间的鲸鱼运动；这些结果还将有助于加强上述其他分析。 **（3）测试生物量频谱模型，以解释诺森伯兰海峡海峡生态系统的生态结构和功能的空间和季节性变化的能力，重点是下调和上下的过程。 **（4）使用粒子追踪来确定淡水系统中压载水排放的入侵物种的命运，并解决幼虫龙虾的“连接”以及圣乔治湾和诺森伯兰郡海峡内的源链接分散和运输。