Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes

BACKGROUND: Natural M. chilensis populations dominate habitats with a steep environmental gradient, and that are characterized by abrupt changes in salinity and exposure to desiccation. Although these populations are the source of seed supplies for the Chilean mussel culture industry (annual product...

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Autores principales:	Molinet Flores,Carlos Alberto, Díaz Gomez,Manuel Alejandro, Arriagada Muñoz,Camilo Bernardo, Cares Pérez,Leny Eunise, Marín Arribas,Sandra Lorena, Astorga Opazo,Marcela Patricia, Niklitschek Huaquin,Edwin Juan Elías
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2015
Materias:	Salinity gradient Mussel spatial distribution Cross-shore contraction/expansion dynamic
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2015000100011
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spelling	oai:scielo:S0716-078X20150001000112015-12-21Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processesMolinet Flores,Carlos AlbertoDíaz Gomez,Manuel AlejandroArriagada Muñoz,Camilo BernardoCares Pérez,Leny EuniseMarín Arribas,Sandra LorenaAstorga Opazo,Marcela PatriciaNiklitschek Huaquin,Edwin Juan Elías Salinity gradient Mussel spatial distribution Cross-shore contraction/expansion dynamic BACKGROUND: Natural M. chilensis populations dominate habitats with a steep environmental gradient, and that are characterized by abrupt changes in salinity and exposure to desiccation. Although these populations are the source of seed supplies for the Chilean mussel culture industry (annual production around 250 thousand Tons), knowledge about natural populations is scarce. Based on video transect recordings, this study carries out research into one of the principal mussel beds and its associated epibenthic community in the Reloncaví Fjord, both along cross-shore and along-shore distribution gradients RESULTS: Mytiluschilensis was observed between the middle intertidal zone and the upper subtidal zone (between approximately 9 and 26 psu), with a richer associated community towards the subtidal zone and the fjord mouth. The mussel Condition Index (total meat weight/shell length*100) in the intertidal zone was significantly greater than in the subtidal zone, which raises questions about the reproductive contribution of mussels along the intertidal mid-subtidal gradient CONCLUSIONS: Salinity and tidal variations, together with biological interactions, would seem to be key factors for explaining M. chilensis spatial distribution in the Reloncaví fjord, where beds appear to be in a contraction stage, as evidenced by M. chilensis scarcity towards the subtidal zone. The importance of these populations and their persistence in environments with high perturbation frequency, suggests a monitoring program should be implemented that considers both population spatial distribution and the changing environmental conditions.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.88 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2015000100011en10.1186/S40693-015-0041-7
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Salinity gradient Mussel spatial distribution Cross-shore contraction/expansion dynamic
spellingShingle	Salinity gradient Mussel spatial distribution Cross-shore contraction/expansion dynamic Molinet Flores,Carlos Alberto Díaz Gomez,Manuel Alejandro Arriagada Muñoz,Camilo Bernardo Cares Pérez,Leny Eunise Marín Arribas,Sandra Lorena Astorga Opazo,Marcela Patricia Niklitschek Huaquin,Edwin Juan Elías Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes
description	BACKGROUND: Natural M. chilensis populations dominate habitats with a steep environmental gradient, and that are characterized by abrupt changes in salinity and exposure to desiccation. Although these populations are the source of seed supplies for the Chilean mussel culture industry (annual production around 250 thousand Tons), knowledge about natural populations is scarce. Based on video transect recordings, this study carries out research into one of the principal mussel beds and its associated epibenthic community in the Reloncaví Fjord, both along cross-shore and along-shore distribution gradients RESULTS: Mytiluschilensis was observed between the middle intertidal zone and the upper subtidal zone (between approximately 9 and 26 psu), with a richer associated community towards the subtidal zone and the fjord mouth. The mussel Condition Index (total meat weight/shell length*100) in the intertidal zone was significantly greater than in the subtidal zone, which raises questions about the reproductive contribution of mussels along the intertidal mid-subtidal gradient CONCLUSIONS: Salinity and tidal variations, together with biological interactions, would seem to be key factors for explaining M. chilensis spatial distribution in the Reloncaví fjord, where beds appear to be in a contraction stage, as evidenced by M. chilensis scarcity towards the subtidal zone. The importance of these populations and their persistence in environments with high perturbation frequency, suggests a monitoring program should be implemented that considers both population spatial distribution and the changing environmental conditions.
author	Molinet Flores,Carlos Alberto Díaz Gomez,Manuel Alejandro Arriagada Muñoz,Camilo Bernardo Cares Pérez,Leny Eunise Marín Arribas,Sandra Lorena Astorga Opazo,Marcela Patricia Niklitschek Huaquin,Edwin Juan Elías
author_facet	Molinet Flores,Carlos Alberto Díaz Gomez,Manuel Alejandro Arriagada Muñoz,Camilo Bernardo Cares Pérez,Leny Eunise Marín Arribas,Sandra Lorena Astorga Opazo,Marcela Patricia Niklitschek Huaquin,Edwin Juan Elías
author_sort	Molinet Flores,Carlos Alberto
title	Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes
title_short	Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes
title_full	Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes
title_fullStr	Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes
title_full_unstemmed	Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes
title_sort	spatial distribution pattern of mytilus chilensis beds in the reloncaví fjord: hypothesis on associated processes
publisher	Sociedad de Biología de Chile
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2015000100011
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Spatial distribution pattern of Mytilus chilensis beds in the Reloncaví fjord: hypothesis on associated processes

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