COLLABORATIVE RESEARCH: Temporal stability of riverine communities in dendritic networks at multiple spatial scales

合作研究：多个空间尺度的树突网络中河流群落的时间稳定性

• 批准号: 1655764
• 负责人: Kurt Anderson
• 金额: $ 15万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1655764&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Temporal; stability; riverine

Understanding how communities of species change through time is one of the fundamental goals of ecology. A key step toward understanding how natural systems function is answering two questions: 1) Why are some communities more sensitive to disturbance than others? and 2) Can the sensitivity of a community be predicted based on its location in a landscape? This study seeks to understand how communities develop and are maintained in rivers. Specifically, the project will explore how sensitivity of river communities is affected by environmental features that dictate how organisms move about the landscape. Examples of these environmental features include prevailing wind currents, connections between forest fragments, and the shape of a river and the small streams feeding the river (i.e. river network) in a watershed. This project uses stream invertebrates in river networks as a model system. The work involves three major tasks: 1) To analyze how the shape of a river network affect the level of variability of stream invertebrate communities using existing data. 2) To experimentally test how the structure of river networks affects the response of invertebrate communities to disturbances. This task will be accomplished using experimental streams, experimentally inducing a disturbance, and following the response. 3) To produce a computer model to explore scenarios considering different shapes of networks, different types of organisms and novel disturbances that cannot be explored using existing data or experiments. This work will directly inform scientists and managers about the responses of river systems to disturbance. The study will also create a tool for exploration of networks in new river systems. This study will provide training for graduate and undergraduate students in ecology and mathematical modeling.Linking community stability to spatial processes in variable environments is one of ecology?s remaining great challenges, with implications for the management and conservation of biodiversity. The researchers focus on controls over invertebrate community stability in riverine ecosystems because they have found that a site location in a dendritic stream network can influence both local biodiversity and temporal stability. Therefore, this project addresses the general question: How does location of a community within a dispersal network interact with species traits to affect aggregate and compositional community stability? The work will build on existing projects including the ecology of river networks, analysis of community temporal stability, river network modeling, and the interaction between models and field data. The project will employ several techniques to address the question, including a meta-analysis of archived long-term stream monitoring data, field experiments, and mechanistic modeling to achieve an understanding of processes behind observed compositional and aggregate stability while simultaneously providing a general theoretical underpinning that is transferable to other contexts and systems. Ultimately this work will be directed at three specific questions: (1) Within a dispersal network, how does location affect the temporal stability of communities? (2) How resilient are communities at different locations within a network? (3) How does local stability and structure of the dispersal network affect stability at the regional scale, i.e., across the entire dispersal network?

了解物种社区如何随着时间的流逝而变化是生态学的基本目标之一。了解自然系统功能如何回答两个问题的关键步骤：1）为什么某些社区比其他社区对干扰更敏感？ 2）可以根据景观中的位置预测社区的敏感性吗？这项研究旨在了解社区如何在河流中发展和维持。具体而言，该项目将探讨河流社区的敏感性如何受环境特征的影响，这些特征决定了生物如何在景观上移动的环境特征。这些环境特征的例子包括盛行的风流，森林碎片之间的连接以及河流的形状以及在分水岭中喂养河流（即河流网络）的小溪流。该项目将河网络中的无脊椎动物用作模型系统。这项工作涉及三个主要任务：1）分析使用现有数据的河网络形状如何影响无脊椎动物社区的变异水平。 2）实验测试河网的结构如何影响无脊椎动物群落对干扰的反应。该任务将使用实验流来完成，从实验中引起干扰，并遵循响应。 3）生产一个计算机模型来探索方案，考虑网络的不同形状，不同类型的生物和新型干扰，这些干扰无法使用现有数据或实验进行探索。这项工作将直接告知科学家和管理人员河流系统对干扰的反应。该研究还将创建一种用于探索新河流系统网络的工具。这项研究将为生态学和数学建模领域的研究生和本科生提供培训。链接社区稳定在可变环境中的空间过程是生态学的挑战之一，对生物多样性的管理和保护产生了影响。研究人员专注于对河流生态系统中无脊椎动物社区稳定性的控制，因为他们发现树突状溪流网络中的位置可以影响当地的生物多样性和时间稳定性。因此，该项目解决了一个普遍的问题：分散网络中社区的位置如何与物种特征相互作用以影响骨料和组成社区的稳定性？这项工作将建立在现有项目的基础上，包括河流网络的生态，对社区时间稳定性的分析，河流网络建模以及模型和现场数据之间的相互作用。该项目将采用多种技术来解决该问题，包括对存档的长期流量监测数据，现场实验和机械建模的荟萃分析，以了解观察到的构图和骨料稳定性背后的过程，同时提供一般理论基础，从而可以将其传递到其他上下文和系统。最终，这项工作将针对三个特定问题：（1）在分散网络中，位置如何影响社区的时间稳定性？ （2）网络中不同位置的社区的韧性如何？ （3）分散网络的局部稳定性和结构如何在整个分散网络上（即在整个分散网络中）影响稳定性？

项目成果

The application of metacommunity theory to the management of riverine ecosystems

• DOI: 10.1002/wat2.1557
• 发表时间: 2021-08
• 期刊: Wiley Interdisciplinary Reviews: Water
• 作者: C. Patrick;K. Anderson;Brown L. Brown-Brown-L.-Brown-2142476793;C. Hawkins;Anya N. Metcalfe;P. Saffarinia;T. Siqueira;C. S

The Intersection of Wastewater Treatment Plants and Threatened and Endangered Species in California, USA Watersheds

美国加利福尼亚州废水处理厂与受威胁和濒危物种的交叉点

• DOI: 10.1029/2022wr033976
• 发表时间: 2023
• 期刊: Water Resources Research
• 影响因子: 5.4
• 作者: Cassady, Anna;Anderson, Kurt E.;Schwabe, Kurt A.;Regan, Helen M.
• 通讯作者: Regan, Helen M.

Effects of urban spatial and temporal heterogeneity on benthic macroinvertebrate and diatom communities [Effects of urban spatial and temporal heterogeneity on benthic macroinvertebrate and diatom communities]

城市时空异质性对底栖大型无脊椎动物和硅藻群落的影响[城市时空异质性对底栖大型无脊椎动物和硅藻群落的影响]

• DOI: 10.1127/fal/2022/1481
• 发表时间: 2022
• 期刊: Fundamental and Applied Limnology
• 影响因子: 1
• 作者: Saffarinia, Parsa;Anderson, Kurt E.;Palenscar, Kai T.
• 通讯作者: Palenscar, Kai T.

Effects of experimental multi-season drought on abundance, richness, and beta diversity patterns in perennially flowing stream insect communities

实验性多季节干旱对常年流动的溪流昆虫群落丰度、丰富度和β多样性模式的影响

• DOI: 10.1007/s10750-021-04735-2
• 发表时间: 2021
• 期刊: Hydrobiologia
• 影响因子: 2.6
• 作者: Saffarinia, P.;Anderson, K. E.;Herbst, D. B.
• 通讯作者: Herbst, D. B.

Rethinking biodiversity patterns and processes in stream ecosystems

重新思考河流生态系统中的生物多样性模式和过程

• DOI: 10.1002/ecm.1520
• 发表时间: 2022
• 期刊: Ecological Monographs
• 影响因子: 6.1
• 作者: Green, Matthew D.;Anderson, Kurt E.;Herbst, David B.;Spasojevic, Marko J.
• 通讯作者: Spasojevic, Marko J.