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Macrobentos del área de Bahía Blanca (Argentina), distribución espacial de la fauna
Bremec, Claudia Silvia;
Boletim do Instituto Oceanográfico , 1990, DOI: 10.1590/S0373-55241990000200001
Abstract: the present paper refers to the results ofbenthic surveys carried out between september 1982 and august 1983 in the area of bahfa blanca, province of buenos aires, argentina. they include the composition and spatial distribution of the macrofauna, related to the granulometric characteristics of the sediments. the area was characterized by dominance of species, in spite of spatial and seasonal fluctuations. the correspondence between many abundant species and the granulometric characteristics of the bottom is related to their feeding habits. a gradual increase of deposit feeders in muddy sediments was observed.
Macrobentos del área de Bahía Blanca (Argentina), distribución espacial de la fauna
Bremec, Claudia Silvia;
Brazilian Journal of Oceanography , 1990, DOI: 10.1590/S1679-87591990000200001
Abstract: the present paper refers to the results ofbenthic surveys carried out between september 1982 and august 1983 in the area of bahfa blanca, province of buenos aires, argentina. they include the composition and spatial distribution of the macrofauna, related to the granulometric characteristics of the sediments. the area was characterized by dominance of species, in spite of spatial and seasonal fluctuations. the correspondence between many abundant species and the granulometric characteristics of the bottom is related to their feeding habits. a gradual increase of deposit feeders in muddy sediments was observed.
Benthic diversity in a submarine canyon in the Argentine sea Diversidad bentónica en un ca ón submarino en el mar argentino
CLAUDIA BREMEC,LAURA SCHEJTER
Revista chilena de historia natural , 2010,
Abstract:
Benthic survey of natural and artificial reefs off Mar del Plata, Argentina, southwestern Atlantic
Genzano,Gabriel; Giberto,Diego; Bremec,Claudia;
Latin american journal of aquatic research , 2011,
Abstract: this study describes the macrofaunal assemblages of subtidal rocky reefs off mar del plata in order to compare the macro invertebrate assemblages settled on shipwrecks with those of nearby reef sand to characterize the fish fauna associated with natural (nr) and artificial (ar) reefs. topographic characterizations and surveys of invertebrates and fishes were performed in november and december 2005, using scuba diving. a non-parametric multivariate analysis was used to analyze the environmental and biological data. the reefs were mainly distinguished by their depth and the position of the substrate. the red calcareous algae, corallina officinalis, dominated the shallowest nr, whereas conspicuous mytilid assemblages of mytilus platensis were present at depths over 3 m, sea anemones, anthothoe chilensis, were more abundant between 6 and 10 m, and the soft coral, tripalea clavaria, was found at nearly 20 m depth. no differences were found between horizontal ars and the adjacent nrs. the greatest differences were found between the communities of vertical and horizontal substrates, both in nrs and ars. fifteen fish species were recorded in the analyzed area. species having strong site fidelity, e.g., acanthistius brasilianus and pseudopercis semifasciata, were clearly more abundant and/or frequent in ars (shipwrecks) than in nrs. this pioneer study in the surveyed area showed that reef sallow the settlement of diverse benthic assemblages. ars also provide refuge for fishes. as sport fishing and diving are activities being carried out in mar del plata, where tourism is one of the main economic resources, the protection of such areas should be considered in conservation plans.
POLYCHAETE ASSEMBLAGES IN SW ATLANTIC: RESULTS OF "SHINKAI MARU" IV, V, X AND XI (1978-1979) CRUISES IN PATAGONIA AND BUENOS AIRES
Bremec,Claudia; Souto,Valeria; Genzano,Gabriel;
Anales del Instituto de la Patagonia , 2010, DOI: 10.4067/S0718-686X2010000200005
Abstract: the aim of this paper is to study the polychaete composition from a wide area in the argentinean shelf, between 36°s and 55°s, by means of samples collected from soft bottoms with picard dredge, during the "shinkai maru" cruises developed in 1978-79. as the study area comprises both the magellanic and argentinean biogeographic provinces, we analyze if these results show differences in polychaete composition between both provinces. a total of 816 individuals was studied; 29 families, represented by 70 taxa, were identified. the most frequent (36-57% sampling stations) and abundant families were onuphidae, nephtyidae and ampharetidae, mainly represented by kinbergonuphis dorsalis, aglaopha-mus sp. and ampharete kerguelensis, respectively. cluster analysis, simper test and anosim showed two different species assemblages in two well defined areas according to a nearly 60m depth boundary, in correspondence with the classical magellanic and argentinean provinces.
Comunidades bentónicas de la plataforma continental argentina: campa?as transección BIP "Oca Balda" 1987/88/89
Roux, Ana;Batisda, Ricardo;Bremec, Claudia;
Boletim do Instituto Oceanográfico , 1993, DOI: 10.1590/S0373-55241993000100007
Abstract: the macrobenthic assemblages of buenos aires province continental shelf were studied from samples collected by the r/v "capitán oca balda" along a transect from 38 m to 218 m depth. three faunistic areas were determined, corresponding to the coastal, central and external shelf, inhabited by species originate d from the argentine and/or magellanic zoogeographical provinces. these results confirm the presence of different ecological areas in the argentine continental shelf.
Comunidades bentónicas de la plataforma continental argentina, campa?as transección BIP "Oca Balda" 1987/88/89: transection cruises R/V "Oca Balda" 1987/88/89
Roux, Ana;Batisda, Ricardo;Bremec, Claudia;
Brazilian Journal of Oceanography , 1993, DOI: 10.1590/S1679-87591993000100007
Abstract: the macrobenthic assemblages of buenos aires province continental shelf were studied from samples collected by the r/v "capitán oca balda" along a transect from 38 m to 218 m depth. three faunistic areas were determined, corresponding to the coastal, central and external shelf, inhabited by species originate d from the argentine and/or magellanic zoogeographical provinces. these results confirm the presence of different ecological areas in the argentine continental shelf.
New records of two species of Sabellaria (Polychaeta: Sabellariidae) from the Argentinean Biogeographic Province
Bremec,Claudia S; Giberto,Diego A;
Revista de biología marina y oceanografía , 2004, DOI: 10.4067/S0718-19572004000200006
Abstract: sabellaria bellis hansen, 1882 and s. wilsoni lana & gruet, 1989 were recorded in different habitats from coastal localities of uruguay and argentina, between 34°s and 37°s, argentinean biogeographic province. local distribution patterns in relation with the hydrography are discussed. our findings show that both species are tolerant to salinity changes
Benthic survey of natural and artificial reefs off Mar del Plata, Argentina, southwestern Atlantic Estudios del bentos de arrecifes naturales y artificiales de Mar del Plata, Argentina, Atlántico sudoccidental
Gabriel Genzano,Diego Giberto,Claudia Bremec
Latin american journal of aquatic research , 2011,
Abstract: This study describes the macrofaunal assemblages of subtidal rocky reefs off Mar del Plata in order to compare the macro invertebrate assemblages settled on shipwrecks with those of nearby reef sand to characterize the fish fauna associated with natural (NR) and artificial (AR) reefs. Topographic characterizations and surveys of invertebrates and fishes were performed in November and December 2005, using SCUBA diving. A non-parametric multivariate analysis was used to analyze the environmental and biological data. The reefs were mainly distinguished by their depth and the position of the substrate. The red calcareous algae, Corallina officinalis, dominated the shallowest NR, whereas conspicuous mytilid assemblages of Mytilus platensis were present at depths over 3 m, sea anemones, Anthothoe chilensis, were more abundant between 6 and 10 m, and the soft coral, Tripalea clavaria, was found at nearly 20 m depth. No differences were found between horizontal ARs and the adjacent NRs. The greatest differences were found between the communities of vertical and horizontal substrates, both in NRs and ARs. Fifteen fish species were recorded in the analyzed area. Species having strong site fidelity, e.g., Acanthistius brasilianus and Pseudopercis semifasciata, were clearly more abundant and/or frequent in ARs (shipwrecks) than in NRs. This pioneer study in the surveyed area showed that reef sallow the settlement of diverse benthic assemblages. ARs also provide refuge for fishes. As sport fishing and diving are activities being carried out in Mar del Plata, where tourism is one of the main economic resources, the protection of such areas should be considered in conservation plans. Se describió la macrofauna de los arrecifes rocosos sublitorales, frente a Mar del Plata, para comparar las asociaciones de macro-invertebrados de los pecios con las de los arrecifes aleda os y caracterizar la fauna de peces tanto en los arrecifes naturales (NR) como artificiales (AR). Las caracterizaciones topográficas y los censos de invertebrados y peces se realizaron mediante buceo autónomo en noviembre y diciembre de 2005. Los datos ambientales y biológicos fueron analizados mediante análisis multivariados no paramétricos. Los arrecifes fueron principalmente discriminados acorde a su profundidad y posición del sustrato. El alga roja calcárea Corallina officinalis fue dominante en los NR poco profundos, mientras que conspicuas asociaciones del mitílido Mytilus platensis se encontraron a más de 3 m de profundidad; la anémona de mar Anthothoe chilensis fue más abundante a los 6-10 m y el
POLYCHAETE ASSEMBLAGES IN SW ATLANTIC: RESULTS OF "SHINKAI MARU" IV, V, X AND XI (1978-1979) CRUISES IN PATAGONIA AND BUENOS AIRES ASOCIACIONES DE POLIQUETOS EN EL ATLáNTICO SW: RESULTADOS DE LAS CAMPA AS "SHINKAI MARU" IV, V, X AND XI (1978-1979) EN PATAGONIA Y BUENOS AIRES
Claudia Bremec,Valeria Souto,Gabriel Genzano
Anales del Instituto de la Patagonia , 2010,
Abstract: The aim of this paper is to study the polychaete composition from a wide area in the Argentinean shelf, between 36°S and 55°S, by means of samples collected from soft bottoms with Picard dredge, during the "Shinkai Maru" cruises developed in 1978-79. As the study area comprises both the Magellanic and Argentinean Biogeographic Provinces, we analyze if these results show differences in polychaete composition between both Provinces. A total of 816 individuals was studied; 29 families, represented by 70 taxa, were identified. The most frequent (36-57% sampling stations) and abundant families were Onuphidae, Nephtyidae and Ampharetidae, mainly represented by Kinbergonuphis dorsalis, Aglaopha-mus sp. and Ampharete kerguelensis, respectively. Cluster Analysis, SIMPER test and ANOSIM showed two different species assemblages in two well defined areas according to a nearly 60m depth boundary, in correspondence with the classical Magellanic and Argentinean Provinces. El objetivo de este trabajo es estudiar la composición de poliquetos en una amplia zona de la plataforma argentina, entre 36°S y 55°S, a partir de muestras colectadas en fondos blandos con rastra Picard, durante las campa as "Shinkai Maru" desarrolladas en 1978-79. Dado que el área de estudio comprende las provincias Biogeográficas Magallánica y Argentina, se analiza si los resultados muestran diferencias en la composición de poliquetos en ambas Provincias. Se estudió un total de 816 individuos; 29 familias, representadas por 70 taxa, fueron identificadas. Las familias más frecuentes (36-57% estaciones de muestreo) y abundantes fueron Onuphidae, Nephtyidae y Ampharetidae, representadas por Kinbergonuphis dorsaíis, Agíaophamus sp. y Ampharete kergueíensis, respectivamente. El Análisis de Agrupamientos, la prueba SIMPER y el ANOSIM mostraron dos conjuntos de especies en dos áreas bien definidas, de acuerdo con un límite aproximado a los 60m de profundidad, en correspondencia con las clásicas Provincias Magallánica y Argentina.
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