Potential effects of invasive Dreissenid mussels on a pelagic freshwater ecosystem: using an ecosystem model to simulate mussel invasion in a sockeye lake

IF 2.2 3区 环境科学与生态学 Q2 ECOLOGY Aquatic Invasions Pub Date : 2021-01-01 DOI:10.3391/AI.2021.16.1.09
P. Woodruff, B. Poorten, C. Walters, V. Christensen
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引用次数: 4

Abstract

Dreissenid (zebra and quagga) mussels are spreading across North America and having an impact on freshwater ecosystems, through bottom-up impacts. Lakes in British Columbia are known to be at risk for mussel invasion due to favourable water chemistry and significant cross-border boat movements. This project uses Ecopath with Ecosim (EwE) to model a hypothetical mussel invasion into Shuswap Lake: one of the most popular lakes for recreation and one of the most productive sockeye lakes in the province. A model of the ecosystem was fit to available data and then projected forward to examine the effects from three different scenarios: no invasion, a base mussel invasion scenario resulting in a carrying capacity of 5 g∙m and 15 g∙m of zebra and quagga mussels, respectively, and a high density invasion scenario resulting in a combined carrying capacity of 40 g∙m of Dreissenid mussels. The greatest ecosystem impacts resulted in declines in large piscivorous rainbow trout and lake trout, followed by non-anadromous kokanee salmon, with little effect observed on anadromous sockeye salmon. Two mechanisms limit the predicted impact of mussels in the study system: (1) paucity of shallow water habitat, limiting the scope for invasion; and (2) movements by fish in and out of the system. This second mechanism includes some resident species that rear for up to three years upstream of the lake, as well as anadromous species, which spend most of their life in the marine environment. While most of the effects are observed on recreationally important species, there is also the possibility of mussels spreading from this system into others within the same watershed, reiterating the importance of preventing the invasion and spread of Dreissenid mussels.
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贻贝入侵对远洋淡水生态系统的潜在影响:用生态系统模型模拟红眼湖贻贝入侵
斑马和斑驴贻贝正在北美蔓延,并通过自下而上的影响对淡水生态系统产生影响。由于有利的水化学和重大的跨境船只运动,不列颠哥伦比亚省的湖泊面临贻贝入侵的风险。该项目使用Ecopath with Ecosim (EwE)来模拟贻贝入侵舒斯瓦普湖的假设:舒斯瓦普湖是该省最受欢迎的休闲湖泊之一,也是最具生产力的红眼鱼湖之一。将生态系统模型拟合现有数据,然后进行预测,以检验三种不同情景的影响:没有入侵,基本贻贝入侵情景导致斑马贻贝和斑驴贻贝的承载能力分别为5 g∙m和15 g∙m,高密度入侵情景导致德莱森尼贻贝的总承载能力为40 g∙m。对生态系统影响最大的是大型食鱼虹鳟鱼和湖鳟鱼的数量下降,其次是非溯河鲑鱼,对溯河红鲑的影响很小。两种机制限制了贻贝在研究系统中的预测影响:(1)浅水栖息地缺乏,限制了贻贝的入侵范围;(2)鱼类进出系统的运动。第二种机制包括一些在湖上游生活长达三年的常驻物种,以及在海洋环境中度过大部分生命的溯河物种。虽然观察到的大多数影响是对娱乐重要物种的影响,但也有可能贻贝从这个系统扩散到同一流域内的其他物种,这重申了防止德雷塞尼贻贝入侵和扩散的重要性。
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来源期刊
Aquatic Invasions
Aquatic Invasions ECOLOGY-MARINE & FRESHWATER BIOLOGY
CiteScore
4.30
自引率
0.00%
发文量
20
审稿时长
6-12 weeks
期刊介绍: Aquatic Invasions is an open access, peer-reviewed international journal focusing on academic research of biological invasions in both inland and coastal water ecosystems from around the world. It was established in 2006 as initiative of the International Society of Limnology (SIL) Working Group on Aquatic Invasive Species (WGAIS) with start-up funding from the European Commission Sixth Framework Programme for Research and Technological Development Integrated Project ALARM. Aquatic Invasions is an official journal of International Association for Open Knowledge on Invasive Alien Species (INVASIVESNET). Aquatic Invasions provides a forum for professionals involved in research of aquatic non-native species, including a focus on the following: • Patterns of non-native species dispersal, including range extensions with global change • Trends in new introductions and establishment of non-native species • Population dynamics of non-native species • Ecological and evolutionary impacts of non-native species • Behaviour of invasive and associated native species in invaded areas • Prediction of new invasions • Advances in non-native species identification and taxonomy
期刊最新文献
Horizon scanning for potentially invasive non-native marine species to inform trans-boundary conservation management – Example of the northern Gulf of Mexico Models based on chronological data correctly predict the spread of freshwater aliens, and reveal a strong influence of river access, anthropogenic activities and climate regimes Dietary habits change of Lessepsian migrants’ fish from the Red Sea to the Eastern Mediterranean Sea Size-dependent functional response of the round goby Neogobius melanostomus; implications for more accurate impact potential calculation Early stage of invasion of the quagga mussel (Dreissena rostriformis bugensis) within the interconnected lakes Lough Ree and Lough Derg of the Shannon River system, Ireland
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