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

基本信息

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：
2017
资助国家：
加拿大
起止时间：
2017-01-01 至 2018-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=631888
关键词：
Exploring interactions among climatic stressors

项目摘要

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:

全球变化的生态意外证明，缺乏一种概念方法来研究多种新颖和快速的环境变化（即压力源）的累积影响，压力源和物种之间的相互作用是这些意外事件的核心，因为它们会导致间接影响。然而，对非生物和生物（例如竞争、捕食）相互作用、物种扩散和对压力群落的适应的中介作用的机制理解仍然非常深入。不断发展的生态位和元群落概念的整合提供了一种发现涉及多种压力因素的生态进化动态的工具，例如极端气候事件（例如干旱和热浪），这种方法还必须考虑功能性物种特征。预测气候压力源对生态系统功能及其服务的净影响是，沿着海拔和纬度梯度探索池塘元群落可以揭示全球变暖如何影响生物多样性和功能。我的年轻科学家小组的几项发现是这项拟议研究的基础，该研究将建立在我们的经验基础上，调查多种压力因素对水生生态系统的净影响。我们将在未来五年内实现以下四个研究目标：