Consulta: subjectFacets:"Soft bottoms"
Registros recuperados: 5
Data/hora: 08/06/2024 16:32:02

Estimation des stocks de poissons des lagons de Nouvelle-Calédonie : 2 – Stocks des poissons de fond et des poissons associés aux récifs coralliens
Provedor de dados: 5
Autores: Kulbicki, M; Labrosse, Pierre; Letourneur, Y.
Fish stocks found on lagoon bottoms and near reefs are characterized by a high diversity and heterogeneous habitat which make stock estimation difficult. In particular, it is necessary to combine several methods in order to evaluate the major components of these stocks. The present study aimed at estimating reef fish stocks in the Northern Province of New Caledonia, a region where they represent a major target for the local fishermen. These estimates were based on experimental fishing with handlines and bottom longlines. Handlines were used to assess the stocks near reefs, and longlines for those in areas away from reefs and on lagoon soft bottoms. Handline stations (363) were sampled in three different regions (west, north and east lagoons) and three...
Tipo: Text
Palavras-chave: Poissons démersaux; Évaluation de stocks; Palangrottes; Lignes à main; Fonds meubles; Récifs; Nouvelle-Calédonie; Océan Pacifique; Demersal fish; Stock assessment; Handline; Longline; Soft bottoms; Reefs; SW New Caledonia; Pacific Ocean.
Ano: 2000
URL: https://archimer.ifremer.fr/doc/00608/71969/70659.pdf

Annelid assemblages in soft bottoms subjected to human impact in the Urias estuary (Sinaloa, Mexico)
Provedor de dados: 5
Autores: Mendez, N.
The annelid fauna inhabiting soft bottoms was analysed during February and April, 1997 in the Urfas estuary which is mostly surrounded by mangrove swamps, but is also subjected to the effect of several anthropogenic activities, Classification and ordination techniques were used to perform the characterisation of the system based on the annelid assemblages according to environmental variables (mainly organic matter content and percentage of mud). Three zones were found: (1) 'very polluted zone', in front of a slaughterhouse and a fish processing factory with a total lack of macrofauna due to the strong enrichment of the sediment in organic matters (2) 'polluted zones', characterised by the sporadic presence of oligochaetes in front of a domestic sewage...
Tipo: Text
Palavras-chave: Annélides; Fonds meubles; L'estuaire d'Urías; Écosystème perturbé; Espèces indicatrices; Annelids; Soft bottoms; Urias estuary; Ecosystem disturbances; Indicator species.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43315/42939.pdf

STRUCTURE OF A POLYCHAETE COMMUNITY IN A MANGROVE IN THE NORTHERN COAST OF BRAZIL
Provedor de dados: 37
Autores: TAVARES CUTRIM,Allana Stéphanie; SANTOS SOUSA,Lorena Karine; PASSOS RIBEIRO,Rannyele; DE OLIVEIRA,Verônica Maria; SILVA DE ALMEIDA,Zafira da.
ABSTRACT Polychaetes play an important role in the structure and functioning of benthic communities in mangroves; however, knowledge about these organisms in the Maranhão Amazon coast is scarcity. This study analyzed the ecological aspects of polychaete community in the Quebra Pote mangrove in Maranhão State. Four sampling campaigns were carried out during both rainy and dry periods between November 2013 and July 2014, using 100 meters long transects set perpendicular to the waterline at three zones 50 m between them. A total of 521 organisms were identified belonging to ten families and 15 species; Nephtys simoni, Notomastus sp., and Paraonis sp. represented 58.92 % of all samples. Mobile deposit-feeders polychaetes were dominant and abundant. The Quebra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annelids; Diversity; Estuaries; Soft bottoms; Variation.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000300286

A COMMUNITY ANALYSIS OF THE SOFT BOTTOM MEGAFAUNA (CRUSTACEA, MOLLUSCA) FROM THE SOUTHWESTERN REGION OF SANTA MARTA, COLOMBIAN CARIBBEAN
Provedor de dados: 50
Autores: Arango,Claudia P.; Solano,Oscar D.
Soft bottom megabenthic communities have been poorly studied in the Caribbean Sea. In this study we describe the structure and species composition of a Crustacea-Mollusca megafaunal community based on beam trawl samples taken between 13 and 60 m depth at the southwestern region of Santa Marta, Colombian Caribbean. Classification and ordination analyses using abundance data of crustaceans and molluscs produced two main groups (A and C), which seem to be controlled by depth and sediment characteristics. Group A consisted of species collected at the deeper stations and high content of silts (between 30 and 60 m depth) and exhibited the highest density and biomass mean values. The decapod Chasmocarcinus cilindricus was found as the characteristic species for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Megafauna; Soft bottoms; Communities; Caribbean; Colombia.
Ano: 1999
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97611999000100008

LA CLASE CAUDOFOVEATA (MOLLUSCA) EN EL MAR CARIBE COLOMBIANO*
Provedor de dados: 50
Autores: Gracia C.,Adriana; Fontalvo,Erlenis; Gámez,Luis Carlos.
Five classes of marine mollusks, including Gastropoda, Bivalvia, Cephalopoda, Scaphopoda, and Polyplacophora, have been recorded inhabiting the Colombian Caribbean Sea. Other classes with a basal position within the phylum such as Caudofoveata and Solenogastres have remained overlooked, as a result of their body shape (worm-like with no shell), small sizes (Caudofoveata 1.5 to 140 mm length), and limited taxonomic information for identifications. The presence of Caudofoveata species on the continental margin of the Colombian Caribbean Sea was evidenced through several studies conducted by Invemar between 2007 and 2012. Samples were collected from localities between Gulf of Morrosquillo and La Guajira, in a bathymetrical range from 3 to 1010 m depth. These...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Biodiversity; Mollusks; Colombian Caribbean; Soft bottoms.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200013