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INTEGRATING INTENSIVE AQUACULTURE OF CHONDRACANTHUS EXASPERATUS , THE TURKISH TOWEL SEAWEED
Publication year - 2001
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.2001.jpy37303-135.x
Subject(s) - halibut , seawater , effluent , mariculture , bay , nutrient , biology , aquaculture , fishery , environmental science , oceanography , ecology , environmental engineering , fish <actinopterygii> , geology
Waaland, J. R. Department of Botany, University of Washington, Seattle, WA 98195 USA A new, high value product from the Turkish Towel Seaweed, Chondracanthus exasperatus, was developed recently by a Seattle company. However, Washington State has a long term moratorium on commercial seaweed harvesting from wild populations so there is renewed interest in intensive cultivation of this species. The initial phase of this research was conducted at Mukilteo, Washington. There, strategies for long term cultivation in tanks were tested, and a custom cultivation tank design was developed for pilot scale cultivation research at a site on the shore of Clam Bay near Manchester, Washington. Long term cultivation is now being tested in tanks of up to 5000 L volume supplied with natural seawater, seawater supplemented with nutrients, and seawater effluent from nearby Pacific Halibut culture tanks. Seawater from Clam Bay is naturally rich in nutrients from tidal driven upwelling and nearby commercial salmon mariculture operations. Supplemental nutrients (commercially available “f/2” enrichment) and halibut culture tank effluent have both been tested for their ability to support C. exasperatus growth with relatively low seawater turnover rates. Compared to seawater at the site, Halibut tank effluent differs in both nutrient composition and quantities. Initial results indicate that halibut tank effluent is a satisfactory source of nutrients for C. exasperatus in intensive culture and that the Turkish Towel Seaweed scrubs significant quantities of nutrients from halibut tank effluent.