English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/91926
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

Water flows through mussel rafts and their relationship with wind speed in a coastal embayment (Ría de Ares-Betanzos, NW Spain)

AuthorsPiedracoba, Silvia ; Álvarez-Salgado, Xosé Antón ; Labarta, Uxío ; Fernández-Reiriz, María José ; Gómez, B.; Balseiro, J. C. F.
KeywordsSubtidal currents
Tidal currents
Coastal winds
Mussel rafts
Ría
Issue Date2014
PublisherElsevier
CitationContinental Shelf Research 75: 1-14 (2014)
AbstractKnowledge of water flows through mussel rafts and their controlling factors is required for an ecosystem approach to the sustainable management of this culture in the Galician rías. With this aim, 4 acoustic 2D-ACM current meters were hung from the bow of 4 rafts located in the mussel cultivation areas of the Ría de Ares-Betanzos (NW Spain) during autumn 2007. Simultaneously, an Aanderaa DCM12 Doppler profiler was moored in an area free of rafts in the middle ría. There were differences in the subtidal and tidal dynamics of the middle channel and mussel farm areas. The tide explained 51.5% of the total variance of the surface current in the middle ría. The explained variance in the seed collection areas of Redes (inner ría) and Miranda (outer ría), where only 2–3 rafts are anchored, were 64.1% and 16.8%, respectively. In the cultivation areas of Arnela (inner ría) and Lorbé (middle ría), where 101 and 40 rafts are anchored, 14.3% and 53.4% of the total variance was explained by the tide. These disparities in the contribution of the tide are likely due to a combination of topographic and bathymetric differences among sites and distortions of the natural flow by the rafts and their hanging ropes. Furthermore, there was a marked influence of winds on the subtidal currents within the rafts; contrasting correlation coefficients and lag times between wind speed and currents were observed for the outer and inner sides of the embayment. The filtration rate of the growing mussels and the number of mussels per raft allow an efficient clearing of the particles transported across the hanging ropes by the measured subtidal currents of 2–3 cm s–1 characteristic of the cultivation areas of Arnela and Lorbé
Description14 páginas, 4 tablas, 8 figuras
Publisher version (URL)http://dx.doi.org/10.1016/j.csr.2013.12.007
URIhttp://hdl.handle.net/10261/91926
DOIhttp://dx.doi.org/10.1016/j.csr.2013.12.007
ISSN0278-4343
E-ISSN1873-6955
Appears in Collections:(IIM) Artículos
Files in This Item:
File Description SizeFormat 
Water_flows_mussel.pdf893,14 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.