Artículo
Macrofaunal assemblages structure three decades after the first report of the invasive Crassostrea gigas reefs in a soft-intertidal of Argentina
Bazterrica, Maria Cielo
; Hidalgo, Fernando Jose
; Rumbold, Carlos Enrique
; Mendez Casariego, Maria Agustina
; Jaubet, Maria Lourdes
; Merlo, Matías Ezequiel
; César, Inés Irma; Provenzal, Marina Soledad; Addino, Mariana del Sol
; Baron, Pedro Jose
; Obenat, Sandra Mabel
Fecha de publicación:
06/2022
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Estuarine, Coastal and Shelf Science
ISSN:
0272-7714
e-ISSN:
1096-0015
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The macrofaunal assemblages of a soft-bottom intertidal area invaded by the Pacific oyster Crassostrea gigas (Thunberg, 1793) were studied at the site where reef formation was first reported for the Atlantic coast of South America (Los Pocitos; 40° 25′ 59.5″ S, 62° 25’ 23.2” W). Seasonal random sampling (winter, spring and summer) was conducted on oyster reefs and the nearby bare sediment and cordgrass areas. The habitat showed different structures with a wide size range of available spaces for macrofaunal colonization. Fifty-three macrofaunal species were recorded. Thirty-five percent of them were native, 3% were cryptogenic, 5% were exotic, and 54% need further taxonomic determination. All of the exotic species were found in reefs; though the amphipod Monocorophium insidiosum (Crawford, 1937) also settled on soft and cordgrass sediments. Species assemblages changed across seasons. Diversity was higher in reefs than in cordgrass or bare sediments during the warm season. There were no differences in the proportion of trophic groups. Our results suggest that C. gigas restructures the macrofaunal species assemblages and that this effect is driven by seasonality. In Los Pocitos, oyster reefs currently show a primary role as a suitable habitat for many species, but the net impacts of the invasion of this ecosystem engineer, including the cascading effects on the food web or the facilitation of further invasions remain unclear. The mechanisms and net effects of this restructuring force need further attention.
Palabras clave:
BIOLOGICAL INVASION
,
ELAPSED INVASION TIME
,
INVASIVE ECOSYSTEM ENGINEERS
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (IIPROSAM)
Articulos de INSTITUTO DE INVESTIGACIONES EN PRODUCCION, SANIDAD Y AMBIENTE
Articulos de INSTITUTO DE INVESTIGACIONES EN PRODUCCION, SANIDAD Y AMBIENTE
Articulos(CESIMAR)
Articulos de CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Articulos de CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Articulos(IIMYC)
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Bazterrica, Maria Cielo; Hidalgo, Fernando Jose; Rumbold, Carlos Enrique; Mendez Casariego, Maria Agustina; Jaubet, Maria Lourdes; et al.; Macrofaunal assemblages structure three decades after the first report of the invasive Crassostrea gigas reefs in a soft-intertidal of Argentina; Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 270; 107832; 6-2022; 1-14
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