Food webs and species biodiversity of the fouling community associated with bivalve aquaculture farms compared to analogous non-farm structures.

Autor: Maurin CE; University of New England, School of Marine Programs, 11 Hills Beach Road, Biddeford, ME, 04005, USA. Electronic address: cmaurin@une.edu., Byron CJ; University of New England, School of Marine Programs, 11 Hills Beach Road, Biddeford, ME, 04005, USA. Electronic address: cbyron@une.edu., Wilson KA; University of Southern Maine, Department of Environmental Science and Policy, 37 College Ave, Gorham, ME, 04038, USA. Electronic address: karen.wilson@maine.edu., St Gelais AT; University of New England, School of Marine Programs, 11 Hills Beach Road, Biddeford, ME, 04005, USA. Electronic address: astgelais@une.edu.
Jazyk: angličtina
Zdroj: Marine environmental research [Mar Environ Res] 2019 May; Vol. 147, pp. 49-61. Date of Electronic Publication: 2019 Mar 28.
DOI: 10.1016/j.marenvres.2019.03.012
Abstrakt: Bivalve aquaculture farms are an integral part of the surrounding coastal marine ecosystem and associated food webs. What is not well understood is how these anthropogenically manipulated, dense, single-species cultures influence species trophodynamics in the coastal ocean. Fouling macrofauna biodiversity, macroalgae biomass, sediment, and food web structure were studied at two blue mussel (Mytilus edulis) floating raft rope-culture aquaculture farm structures and two analogous floating dock structures without mussels in Casco Bay, Maine, USA during the summers of 2016 and 2017. Shannon Wiener diversity index of macrofauna was variable across structures compared depending on month. Macroalgae biomass was significantly higher on farm structures exclusively due to green macroalgae. There was no shift in food web structure determined by stable isotope analysis (δ 13 C and δ 15 N) and Layman metrics. This study is an initial step critical to assessing interactions of bivalve farms with coastal food webs.
(Copyright © 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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