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Making marinas bivalve friendly for enhanced biodiversity outcomes

Adams, LW, Morris, RL, Hull, RB, Dempster, T and Strain, EMA ORCID: 0000-0003-2165-9544 2021 , 'Making marinas bivalve friendly for enhanced biodiversity outcomes' , Marine Pollution Bulletin, vol. 169 , pp. 1-10 , doi: 10.1016/j.marpolbul.2021.112464.

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Natural coastlines are being replaced by artificial structures (pilings, pontoons, breakwaters), with negative environmentalimpacts, particularly in marinas. Ropes seeded with mussels (Mytilus galloprovincialis) were added toartificial structures in a marina, using aquaculture techniques, to reduce the colonisation of invasive taxa. After6-months, droplines beneath pontoons had the highest seeded mussel survival and growth, richness of native andinvasive taxa, and proportion of invasive to native taxa, compared with the other interventions. Mussel ropes onthe intertidal structures (pilings and breakwaters) supported higher biomass of native taxa, whereas mussel ropeson subtidal structures (pontoons and breakwaters) had reduced biomass of invasive taxa, relative to the unseededropes. Droplines had the greater biomass of mussels, while mussel ropes placed under pontoons, and in subtidalgabion baskets limited the biomass but not the diversity of invasive species. Further study is required to determinewhether these interventions can be upscaled to improve both the native biodiversity and functioning ofmarinas.

Item Type: Article
Authors/Creators:Adams, LW and Morris, RL and Hull, RB and Dempster, T and Strain, EMA
Keywords: artificial structures, eco-engineering, biodiversity, invasive species, eco-engineering, piling, pontoon, bivalve
Journal or Publication Title: Marine Pollution Bulletin
Publisher: Pergamon-Elsevier Science Ltd
ISSN: 0025-326X
DOI / ID Number: 10.1016/j.marpolbul.2021.112464
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© 2021 Elsevier Ltd. All rights reserved

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