UNDERUTILIZED TOOLS: SEAWEEDS AS BIOREMEDIATION AND DIVERSIFICATION TOOLS AND BIOINDICATORS FOR INTE‐GRATED AQUACULTURE AND COASTAL MANAGEMENT

Chopin, T.1, Yarish, C.2, Neefus, C.3, Kraemer, G. P.4, Belyea, E.1, Carmona, R.2, Saunders, G. W.5, Bates, C.5, Page, F.6 & Dowd, M.6 1University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, New Brunswick, E2L 4L5, Canada; 2University of Connecticut, Department of Ecology and Evolutionary Biology, 1 University Place, Stamford, Connecticut, 06901‐2315, USA; 3University of New Hampshire, Department of Plant Biology, Office of Biometrics, G32 Spaulding Life Science Center, Durham, New Hampshire, 03824, USA; 4State University of New York, Purchase College, Division of Natural Sciences, Purchase, New York, 10577, USA; 5University of New Brunswick, Centre for Environmental and Molecular Algal Research, P.O. Box 4400, Fredericton, New Brunswick, E3B 5A3, Canada; 6Department of Fisheries and Oceans, Biological Station, 531 Brandy Cove Road, St. Andrews, New Brunswick, E5B 2L9, Canada On a regional scale, finfish aquaculture can be one of the significant contributors to coastal nutrification. Contrary to common belief, even in regions of exceptional tidal and apparent “flushing” regimes like the Bay of Fundy, water mixing and transport may be limited and water residency time can be locally prolonged. Hence, nutrient bio‐availability remains significant for a relatively long period of time in some areas. Understanding the assimilative capacity of coastal ecosystems under cumulative pressure, then, becomes critical. To avoid pronounced shifts in coastal processes, conversion, not dilution, is the solution by integrating fed aquaculture (finfish) with organic and inorganic extractive aquaculture (shellfish and seaweed) so that the “ wastes” of one resource user become a resource for the others. Such a bioremediative approach provides mutual benefits to co‐cultured organisms, and economic diversification and increased profitability per cultivation unit for the aquaculture industry. These concepts will be discussed and illustrated by the results of our on‐going projects and we will demonstrate that seaweeds can also be excellent bio‐indicators of nutrification/eutrophication revealing symptoms of environmental stress and measuring the zone of influence of an aquaculture site. The aquaculture industry is here to stay in our “coastal scape”: it has its place in the global seafood supply and demand, and in the economy of coastal communities. To help ensure its sustainability, it needs, however, to responsibly change its too often monotrophic practices by adopting polytrophic ones to become better integrated into a broader coastal management framework.

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.