Consulta: subjectFacets:"Shallow waters"
Registros recuperados: 5
Data/hora: 03/06/2024 06:48:50

New evidence of perfect overlapping of Haploops and pockmarks field: Is it a coincidence?
Provedor de dados: 5
Autores: Champilou, Jean-baptiste; Baltzer, Agnes; Murat, Anne; Reynaud, Marine; Maillet, Grégoire M.; Nardelli, Maria Pia; Metzger, Édouard.
In the shallow waters of the Bay of Concarneau (South Brittany, France), previous studies reported a dense settlement of the species Haploops (tube-dwelling bioengineer amphipod) that perfectly overlaps a field of pockmarks. A possible mechanistic link may therefore exist between the Haploops colonies and the shallow pockmarks. To test this hypothesis, interferometry sonar and sub-bottom profiler chirp data were acquired in two new areas located in the marine estuary of the Loire River, “La Lambarde” and “Le Croisic”. The new sites share the same sedimentary and geological characteristics as those found in the Bay of Concarneau. The three sites are similarly located in shallow and muddy environments above a faulted Middle Eocene formation that is incised...
Tipo: Text
Palavras-chave: Shallow waters; South Brittany (France); Geophysics; Pockmarks; Haploops.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00502/61324/64896.pdf

Length-based estimates of growth parameters and mortality rates of fish populations from a coastal zone in the Southeastern Brazil
Provedor de dados: 103
Autores: Costa,Marcus Rodrigues da; Tubino,Rafael de Almeida; Monteiro-Neto,Cassiano.
ABSTRACT Small-scale fisheries in Brazil contribute to a significant share of total fish production, accessing a large variety of species. Life history parameters from these resources are important for their management and conservation, based on primary data. The objective of this article is to generate growth parameters and mortality rates of ten fish populations from a coastal zone in Southeastern Brazil. Monthly samples were taken between January 2011 and November 2014 from landings of the beach-seine fishery in an area adjacent to the entrance of the Guanabara Bay. All fishes were measured (total length) and weighed. The length-weight relationships (LWR) were estimated by linear regression analysis on log-transformed data of the equation: W = aL  b ....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Length-weight relationships; Life history; Shallow waters; Small-scale fisheries.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100343

Zooplankton of an urban coastal lagoon: composition and association with environmental factors and summer fish kill
Provedor de dados: 103
Autores: Souza,Leonardo C. e; Branco,Christina W. C.; Domingos,Patrícia; Bonecker,Sérgio L. C.
Zooplankton may be regarded as a sensitive tool for monitoring environmental variations in coastal lagoons due to their ability to immediately react to changes in the water column trophic features and salinity levels. As a coastal lagoon with a broad history of anthropic influence, Rodrigo de Freitas Lagoon (Rio de Janeiro, Brazil) is widely used for water sports and artisanal fishing. The present study aimed to expand the knowledge base about zooplankton in the Rodrigo de Freitas Lagoon by assessing the composition and time-spatial distribution of the major zooplankton groups. Samples were collected fortnightly from at four distinct sampling points August 2001 to July 2002. At each point, salinity, temperature, dissolved oxygen and water transparency were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachionus plicatilis; Dissolved oxygen; Fish mortality; Mesohaline; Shallow waters.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300010

Use of an estuarine environment (Barra do Saí lagoon, Brazil) as nursery by fish
Provedor de dados: 104
Autores: Vendel,Ana L.; Chaves,Paulo de T.
Studies were carried out at the Barra do Saí lagoon, on the northern coast of Santa Catarina State, Brazil, to evaluate the function played by this estuary in the life cycle of fish found at the coastal zone. Samplings were performed using beach seine net from December 2000 to November 2001. The continental influence is strong, as showed by the occurrence of freshwater fishes, although most of the 43 species recorded are marine ones. It was verified that around summer, when the temperature of the water is high, the values of salinity decrease and those of turbidity increase. At this time there is also an increase in the abundance of juvenile fish in the lagoon. Because of its average depth of less than 0.7 m, the lagoon is inhabited primarily by juveniles,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal lagoon; Fish assemblages; Shallow waters; Recruitment.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400020

A comparative study of the Bivalvia (Mollusca) from the continental shelves of Antarctica and Brazil
Provedor de dados: 49
Autores: Passos,Flávio Dias; Magalhães,Frederico Thomaisino.
During identification of bivalve molluscs collected in Antarctica, a rich taxonomic bibliography was gathered, stimulating comparisons with the Brazilian malacofauna. We listed a total of 68 and 368 known shallow-water species (less than 200 m depth) from Antarctica and Brazil, respectively, in order to find species, families and superfamilies in common, and to investigate how these malacofaunas differ in regard to these representative groups and their life habits. There are 23 superfamilies absent in Antarctica, but present in Brazil with at least one species; the reverse does not occur, as all superfamilies known from Antarctica are also recorded from Brazil. The number of Brazilian species is higher, being composed of a mixture of taxa from different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Checklist; Shallow waters; Brazilian fauna; Antarctic fauna.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000100014