Response of benthic macroinvertebrates to dam removal in the restoration of the Boardman River, Michigan, USA

Autor: Fred Van Dyke, Jessica M. Outcalt, David C. Mahan, Eric Nord, Joel T. Betts
Rok vydání: 2020
Předmět:
0106 biological sciences
Aquatic Organisms
Michigan
Insecta
Snails
Dam removal
Marine and Aquatic Sciences
Invasive Species
01 natural sciences
Upstream and downstream (DNA)
Flooding
Abundance (ecology)
Biomass
Sedimentary Geology
Multidisciplinary
geography.geographical_feature_category
Ecology
Eukaryota
Geology
Habitats
Community Ecology
Benthic zone
Medicine
Stream restoration
Channel (geography)
Research Article
Freshwater Environments
Science
010603 evolutionary biology
Rivers
Species Colonization
Animals
Ecosystem
Community Structure
Petrology
Invertebrate
Hydrology
geography
010604 marine biology & hydrobiology
Endangered Species
Ecology and Environmental Sciences
Organisms
Aquatic Environments
Biology and Life Sciences
Bodies of Water
Invertebrates
Earth Sciences
Environmental science
Sediment
Species richness
Zoology
Zdroj: PLoS ONE, Vol 16, Iss 5, p e0245030 (2021)
PLoS ONE
DOI: 10.1101/2020.12.22.423935
Popis: Dam removal is an increasingly important method of stream restoration, but most removal efforts are under-studied in their effects. In order to better understand the effects of such removals on the stream ecosystem, we examined changes in stream macroinvertebrate communities from 2011–2016. Comparisons were focused above, below, and before and after the October 2012 removal of the Brown Bridge Dam on the Boardman River in Michigan (USA), as well as to new channel sites created in its former reservoir (2013–2015). Using linear mixed-effect models on the percent abundance of ecologically sensitive taxa (% Ephemeroptera, Plecoptera, Trichoptera (EPT)), total density of all macroinvertebrates, overall taxa richness, and Functional Feeding Groups, along with multivariate analyses on the community matrix, we examined differences in community composition among sites and years. EPT declined downstream of the dam immediately after dam removal, but recovered in the second year, becoming dominant within 2–4 years. Downstream sites before removal had different community composition than upstream sites and downstream sites after removal (pPotamopyrgus antipodarum) was absent from all sites prior to dam removal, but appeared at low densities in upstream sites in 2013, had spread to all sites by 2015, and showed large increases at all sites by 2016. Managers employing dam removal for stream restoration should include post-removal monitoring for multiple years following removal and conduct risk analysis regarding potential effects on colonization of invasive invertebrate species.
Databáze: OpenAIRE
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