Exploring interactions among climatic stressors and adaptive freshwater metacommunities

探索气候压力源与适应性淡水元群落之间的相互作用

• 批准号: RGPIN-2015-04684
• 负责人: Vinebrooke, Rolf
• 金额: $ 2.33万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=613107
• 关键词: Exploring; interactions; among; climatic; stressors

The ecological surprises of global change attest to the lack of a conceptual approach to the study of cumulative impacts by multiple novel and rapid environmental changes (i.e. stressors). Interactions among stressors and species are at the core of these unexpected events as they result in indirect effects that cannot be easily predicted based on knowledge of single direct effects. However, mechanistic understanding of the mediating effects of abiotic and biotic (e.g., competition, predation) interactions, species dispersal, and adaptation on stressed communities remains very limited. Integration of the evolving niche and metacommunity concepts provides a tool for discovering eco-evolutionary dynamics involving multiple stressors, such as extreme climatic events (e.g., drought and heat waves). Functional species traits must also be considered in such an approach to enable forecasting of the net impacts of climatic stressors on ecosystem function and their services. The premise of my proposal is that exploring pond metacommunities along altitudinal and latitudinal gradients can reveal how global warming affects biodiversity and functional performance. Several discoveries by my group of young scientists are the basis for this proposed research, which will build on our empirical strength to investigate the net effects of multiple stressors on aquatic ecosystems. We will address these four research objectives over the next five years: 1. Using a space-for-time approach, construct community response surfaces in the context of climate change. 2. Test for indirect effects of drought, higher temperature, and species interactions on local communities. 3. Test for "rescue effects" by regional species pools on climatically stressed local communities. 4. Test the potential for climatic niche adaptation in focal species. Success of the proposed research will depend highly on my ability to mentor a dynamic HQP team. My strategy continues to consist of frequent interaction, constructive criticism, encouragement, and sharing of resources among all members of my lab. HQP receive training across a high diversity of disciplines, including paleolimnology, limnology, whole-ecosystem and mesocosm experiments, quantitative taxonomy, and multivariate analyses. The state-of-the-art research infrastructure provided by the University of Alberta and also my own lab enables me to provide comprehensive ecological and taxonomic training, generating skill sets that are increasingly in demand by academic, governmental, and private environmental agencies conducting environmental assessments of impacts on biodiversity and ecosystem services. Though my focus is here on the ecological impacts of global warming, my proposed conceptual approach is broadly applicable to the study of other multiple stressors affecting aquatic and terrestrial ecosystems.

全球的生态意识证明了对新型和快速的铁变化（即压力源）对累积影响的研究，这是压力源和物种之间的相互作用。很容易预测单个直接效应我的建议的气候压力及其服务的前提是，沿着池塘的元素逐步探索池塘梯度，可以揭示如何揭示出生物多样性和功能性能的基础。多种压力源对水生生态系统的影响。 1。使用空间方法，在气候变化的背景下构建社区响应表面。 2。测试干旱，温度较高和物种相互作用对局部社区的间接影响。 3.区域物种池对气候压力的当地社区的“救援效应”测试。 4。测试焦点物种中气候适应的潜力。 拟议的研究的成功将是我指导一个动态的HQP团队的能力最先进的研究基础设施以及我自己的实验室，使我能够在有线，政府和私人环境机构中越来越多地进行培训方法广泛适用于对水生生态系统的其他多重压力源的研究。