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Offshore wind energy and benthic habitat changes : lessons from block island wind farm

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Hutchison_2020_TOS_offshore_wind_CC.pdf (1.819Mb)
Date
12/2020
Author
Hutchison, Zoë
Bartley, Monique
Degraer, Steven
English, Paul
Khan, Anwar
Livermore, Julia
Rumes, Bob
King, John
Keywords
GC Oceanography
TD Environmental technology. Sanitary engineering
T-NDAS
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Abstract
The Block Island Wind Farm (BIWF), situated offshore of Block Island, Rhode Island, is the first commercial offshore wind farm (OWF) in the United States. We briefly review pre-siting studies, which provide contextual information about the benthic habitats and fish in the Block Island Sound area before the BIWF jacket foundations were installed in 2015. We focus on benthic monitoring that took place within the BIWF. This monitoring allowed for assessments of spatiotemporal changes in sediment grain size, organic enrichment, and macrofauna, as well as the colonization of the jacket structures, up to four years post-installation. The greatest benthic modifications occurred within the footprint of the foundation structures through the development of mussel aggregations. Within four years, changes in benthic habitats (defined as biotopes) were observed within the 90 m range of the study, clearly linked to the mussel-dominated colonization of the structures, which also hosted numerous indigenous fish species. We discuss the evident structural and functional effects and their ecological importance at the BIWF and for future US OWFs, drawing on similarities with European studies. While reviewing lessons learned from the BIWF, we highlight the need to implement coordinated monitoring for future developments and recommend a strategy to better understand environmental implications.
Citation
Hutchison , Z , Bartley , M , Degraer , S , English , P , Khan , A , Livermore , J , Rumes , B & King , J 2020 , ' Offshore wind energy and benthic habitat changes : lessons from block island wind farm ' , Oceanography , vol. 33 , no. 4 , pp. 58-69 . https://doi.org/10.5670/oceanog.2020.406
Publication
Oceanography
Status
Peer reviewed
DOI
https://doi.org/10.5670/oceanog.2020.406
ISSN
1042-8275
Type
Journal article
Rights
Copyright © 2020 the Author(s). This is an open access article made available under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution, and reproduction in any medium or format as long as users cite the materials appropriately, provide a link to the Creative Commons license, and indicate the changes that were made to the original content. Images, animations, videos, or other third-party material used in articles are included in the Creative Commons license unless indicated otherwise in a credit line to the material. If the material is not included in the article’s Creative Commons license, users will need to obtain permission directly from the license holder to reproduce the material.
Description
Study concepts, oversight, and funding for the RODEO Program were provided by the US Department of the Interior, Bureau of Ocean Energy Management, Environmental Studies Program, Washington, DC, under HDR’s IDIQ Contract No. M15PC00002.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/21421

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