COLLABORATIVE RESEARCH: RAPID: Using river restoration to test the ecological and evolutionary effects of secondary contact

合作研究：RAPID：利用河流恢复来测试二次接触的生态和进化效应

• 批准号: 1343916
• 负责人: Eric Palkovacs
• 金额: $ 0.63万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2016-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1343916&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; RAPID; Using; river

In many aquatic ecosystems, dams have isolated fish populations for decades to centuries and the isolated populations have diverged both morphologically and genetically. Secondary contact between previously isolated populations will occur as these dams are removed or restoration efforts restore spatial connectivity. This RAPID project will examine the ecological and evolutionary consequences of the initial stages of secondary contact; restoration of river connectivity will soon allow secondary contact between anadromous alewife populations and landlocked populations in Rogers Lake, Connecticut. Divergence in morphology, foraging behavior, and migration has altered the ecological role of these two alewife life history forms over the past 250-350 years. Research will examine the inbreeding between anadromous and landlocked alewife using genetic markers to track introgression. It will document changes in food web structure, nutrient loading, and habitat and resource use by alewife at the initiation of secondary contact. By documenting these important direct and indirect effects of initial contact between anadromous and landlocked populations, the project will significantly advance our understanding of a process that is fundamental to the origin and maintenance of biodiversity.Although anadromous alewives are a critical resource in freshwater and marine habitats and a federally listed species of conservation concern, landlocked alewives are invasive across their range. The investigators will continue work with local lake associations, land trusts and the regional conservation and management community to aid anadromous alewife restoration efforts by contributing results from this study. They will take advantage of an NIH-funded Yale program to recruit under-represented minority undergraduate students to the project, and will train them in the broader scientific context of the research, research methods, data analysis, and written and oral project reports. Outreach talks to the general public, education programs targeting underrepresented minority groups, interactive displays, and digital outreach via internet and social media are also planned.

在许多水生生态系统中，大坝数十年到几个世纪都有孤立的鱼类种群，而孤立的种群在形态和遗传上都存在分歧。由于去除这些大坝或恢复工作恢复空间连接性，因此将发生先前隔离人群之间的次要接触。这个快速的项目将检查次级接触初始阶段的生态和进化后果。河流连通性的恢复将很快允许在康涅狄格州罗杰斯湖（Rogers Lake）的Anadromous Alewife人群与内陆种群之间进行次要接触。在过去的250 - 350年中，形态学，觅食行为和迁移的差异改变了这两种Alewife生命史的生态作用。研究将使用遗传标记来检验无肿瘤和内陆的阿雷植物之间的近亲繁殖，以跟踪渗入。它将记录食物网络结构，营养加载以及栖息地的变化，以及在次要接触开始时Alewife的资源使用。通过记录这些重要的直接和间接效果，对人群和内陆种群之间的初步接触，该项目将大大促进我们对生物多样性起源和维持基础的过程的理解。尽管如此，Anadromous Alewives还是淡水和海洋栖息地以及陆上列出的保存众多的众多的Allocked Alewives的范围，这些范围是熟悉的范围，这些范围是跨越的范围。调查人员将继续与当地的湖泊协会，土地信托和区域保护和管理社区合作，通过为这项研究的结果做出贡献，以帮助无效的Alewife恢复工作。他们将利用NIH资助的耶鲁大学计划，以招募代表性不足的少数群体本科生参加该项目，并将在研究，研究方法，数据分析以及书面和口头项目报告的更广泛的科学背景下进行培训。还计划了与公众的宣传对话，针对代表性不足的少数群体，交互式展示以及通过互联网和社交媒体数字外展的教育计划。