Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina

Abstract. The soft-bottom macrobenthos of Bahía San Julián intertidal was surveyed to identify infaunal assemblages and analyze their relationships with the main environmental factors determining species distribution. Four seasonal surveys (summer, autumn, winter and spring) were performed in the mi...

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Autores principales:	Martin,Juan P., Sar,Alicia, Caminos,Carlos
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2019
Materias:	Benthic communities, soft bottoms anthropogenic disturbance, bioindicators, Mysella patagona
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572019000100051
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spelling	oai:scielo:S0718-195720190001000512019-07-31Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, ArgentinaMartin,Juan P.Sar,AliciaCaminos,Carlos Benthic communities, soft bottoms anthropogenic disturbance, bioindicators, Mysella patagona Abstract. The soft-bottom macrobenthos of Bahía San Julián intertidal was surveyed to identify infaunal assemblages and analyze their relationships with the main environmental factors determining species distribution. Four seasonal surveys (summer, autumn, winter and spring) were performed in the middle and lower intertidal levels at seven sampling stations established on both sides of the sewage discharge point, and water and sediment variables were measured. To explore possible spatial variations in the community, environmental and biological data were analyzed using univariate and multivariate statistics. Community composition varied with intertidal level, sediment characteristics and distance to sewage discharge site. In sediment with high mud content, the community was characterized by Darina solenoides, Mysella patagona, Eteone sculpta, Scolecolepides uncinatus and Capitella sp., in the middle intertidal, and was characterized by M. patagona and Ampelisca sp. in the lower intertidal. In sediment with dominance of fine sand, the community was characterized by Aricidea sp. at both intertidal levels. Near the effluent discharge site, the community was largely dominated by M. patagona. Intertidal level and sediment particle size are the main factors determining the composition of benthic assemblages in the study area. Sewage discharge also affects the composition of the infaunal community, possibly as a result of the contribution of particulate organic matter in suspension that stimulates the populations of detritus feeders.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.54 n.1 20192019-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572019000100051en10.22370/rbmo.2019.54.1.1494
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Benthic communities, soft bottoms anthropogenic disturbance, bioindicators, Mysella patagona
spellingShingle	Benthic communities, soft bottoms anthropogenic disturbance, bioindicators, Mysella patagona Martin,Juan P. Sar,Alicia Caminos,Carlos Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina
description	Abstract. The soft-bottom macrobenthos of Bahía San Julián intertidal was surveyed to identify infaunal assemblages and analyze their relationships with the main environmental factors determining species distribution. Four seasonal surveys (summer, autumn, winter and spring) were performed in the middle and lower intertidal levels at seven sampling stations established on both sides of the sewage discharge point, and water and sediment variables were measured. To explore possible spatial variations in the community, environmental and biological data were analyzed using univariate and multivariate statistics. Community composition varied with intertidal level, sediment characteristics and distance to sewage discharge site. In sediment with high mud content, the community was characterized by Darina solenoides, Mysella patagona, Eteone sculpta, Scolecolepides uncinatus and Capitella sp., in the middle intertidal, and was characterized by M. patagona and Ampelisca sp. in the lower intertidal. In sediment with dominance of fine sand, the community was characterized by Aricidea sp. at both intertidal levels. Near the effluent discharge site, the community was largely dominated by M. patagona. Intertidal level and sediment particle size are the main factors determining the composition of benthic assemblages in the study area. Sewage discharge also affects the composition of the infaunal community, possibly as a result of the contribution of particulate organic matter in suspension that stimulates the populations of detritus feeders.
author	Martin,Juan P. Sar,Alicia Caminos,Carlos
author_facet	Martin,Juan P. Sar,Alicia Caminos,Carlos
author_sort	Martin,Juan P.
title	Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina
title_short	Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina
title_full	Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina
title_fullStr	Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina
title_full_unstemmed	Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina
title_sort	spatial changes in the infaunal community of a macrotidal flat in bahía san julián, southern patagonia, argentina
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572019000100051
work_keys_str_mv	AT martinjuanp spatialchangesintheinfaunalcommunityofamacrotidalflatinbahiasanjuliansouthernpatagoniaargentina AT saralicia spatialchangesintheinfaunalcommunityofamacrotidalflatinbahiasanjuliansouthernpatagoniaargentina AT caminoscarlos spatialchangesintheinfaunalcommunityofamacrotidalflatinbahiasanjuliansouthernpatagoniaargentina
_version_	1714202384485318656

Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina

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