ABRACOS cruise - Physical datasets
Physical data associated with the ABRACO cruise. The ABRACOS (Acoustics along the BRAzilian COaSt) cruise aims to begin an integrated approach to monitoring the tropical marine ecosystems in the Brazilian Nordeste region in order to better understand the connectivity between the sub-systems composing it. In particular, this cruise should fill this gap and improve understanding of the degree of connectivity which exists between the oceanic islands and the continental margin in the Nordeste of Brazil, as well as within the continental platform. In this context, the main objective of the ABRACOS cruise consisted in drawing up a 3D characterization of abiotic and biotic compartments and their interactions in the Brazilian Nordeste. Specific objectives: Objective 1 - Characterization of island and coastal dynamics. Measurement of hydrological characteristics and currents (rosette, CTD, ADCP) should enable the circulation and characteristics of water masses to be described. These data will be more specifically used to study the physical connections between 1) the oceanic islands and coastal ecosystems and 2) the coast along the ocean and coastal zones. The in-situ measurements obtained will also be used to validate high resolution regional hydrodynamic models (e.g. ROMS model) which will be implemented. In-situ data acquired during the ABRACOS cruise will be supplemented by satellite data for sea surface heights (e.g. AVISO), surface temperature and chlorophyll (e.g. MODIS) and wind (e.g. ASCAT). However, it should be noted that the resolution of the products usually used and land-ocean interferences on altimetry and backscatter data will not allow these products to be used at less than 30-50 km from the coast. We will be able to partially eliminate this problem by using new "alongtrack" processing of altimetric data performed by the Center for Topographic studies of the Ocean and Hydrosphere in Toulouse. These data will be used to document the geostrophic (from sea level) ageostrophic (from wind) components of surface circulation and their variability in coastal zones. Objective 2 - Ecosystem acoustics. Acoustic tools can provide the simultaneous acquisition of quantitative and qualitative data, at different spatial-temporal scales, in numerous biotic and abiotic compartments of an ecosystem. These data can be used to characterize the ecosystem in three dimensions and directly study interactions between compartments. Active acoustics have rarely been used in tropical coastal zones. The multifrequency (38, 70, 120, and 200 kHz) acoustic data acquired during the ABRACOS cruise will be used to create an initial 3D characterization of island and coastal ecosystems in the Brazilian Nordeste region, simultaneously characterizing the seabed and water column, when possible. The French team proposing this has sound experience in the field and developed the open source 'Echopen' software in Brest (www.france-nord.ird.fr/lesressources/outils-informatiques) which can separate the various sources of acoustic echoes (e.g. zooplankton, gelatinous organisms and fish) from multifrequency acoustic data. In order to calibrate the 'Echopen Brésil' version, acoustic observations from the ABRACOS cruise must be combined with sampling using micronekton, mesopelagic and bottom trawls (Leg 2 only) and sampling of zooplankton at fixed stations (bongo and WP2 plankton nets and phytoplankton nets). To validate the 'Echopen substrat' tool we will use sampling done with bottom trawl, substrate grab and video camera observations. Objective 3 - Biodiversity and trophic structure. As indicated, acoustic observations will be complemented by in-situ sampling of planktonic, pelagic (mid-water trawls) and demersal-benthic (bottom trawl) organisms. This will involve establishing how hydrological conditions determine the vertical distribution of organisms and therefore interactions. One part of the sampled organisms will be conserved in formaldehyde then identified by taxonomists at the Federal university of Rio de Janeiro (UFRJ) to be added to Brazilian collections. The remainder of the samples will be used to obtain biological information. Along with the classic biological measurements (size, weight, sex, maturity, etc.) specimens of entire organisms (plankton) and soft tissues (muscles) will be taken in order to titrate various trophic tracers: stable isotopes of carbon, nitrogen and insofar as possible mercury. In addition, particulate organic matter (POM) will be collected by filtration (samples taken by rosette) to titrate the amounts of stable isotopes. Spatial variations in these tracers will make it possible to highlight the relative positions of these organisms in the food web and variations in food sources through the local POM signatures. Measurements of methylmercury (MeHg), a neurotoxin which accumulates in the food chain, will also be performed on part of the samples used for stable isotopes. The related projects are ABRACOS and Action Incitative IRD "DANOB".
Important Note: This submission has been initially submitted to SEA
scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI.
The metadata elements have been further processed (refined) in EMODnet
Ingestion Service in order to conform with the Data Submission Service
specifications.
Identificatie
Versiedatum | 2015-01-01 |
---|---|
Type versiedatum | Creatie: Aanmaakdatum of opnamedatum van de dataset. |
Versiedatum | 2021-02-26 |
Type versiedatum | Wijziging: Datum van wijziging, controle, verbetering van dataset. |
Versiedatum | 2021-04-06 |
Type versiedatum | Publicatie: Uitgavedatum van de dataset. |
Versiedatum | 2022-09-05 |
Type versiedatum | Publicatie: Uitgavedatum van de dataset. |
Dataset identificator | a53ad03f-3736-7363-3636-000000076696 |
Dataset identificator |
Inhoud
Contactgegevens dataset(serie)
Organisatie | SEA scieNtific Open data Edition |
---|---|
Adres | By address: IFREMER / IDM / SISMER - Scientific Information Systems for the SEA, IFREMER Centre de Bretagne, ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
data@seanoe.org | |
Connectiepunt URL | https://www.seanoe.org/ |
Rol | Publisher: Publisher |
Contactgegevens dataset(serie)
Organisatie | Ifremer, Scientific Information Systems for the sea |
---|---|
Adres | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
sismer@ifremer.fr | |
Connectiepunt URL | http://data.ifremer.fr/SISMER |
Rol | Dataset Holding Organisation: Dataset Holding Organisation |
Contactgegevens dataset(serie)
Organisatie | Ifremer, Scientific Information Systems for the sea |
---|---|
Adres | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
sismer@ifremer.fr | |
Connectiepunt URL | http://data.ifremer.fr/SISMER |
Rol | Auteur: Partij die auteur is van de data. |
Trefwoorden
GEMET - INSPIRE themes, version 1.0 | Oceanographic geographical features |
---|---|
SeaVoX salt and fresh water body gazetteer |
South Atlantic Ocean
|
SeaDataNet Agreed Parameter Groups |
Pigments
|
SeaDataNet device categories |
current profilers
|
SeaVoX Device Catalogue |
Sea-Bird SBE 911plus CTD
|
SeaDataNet Parameter Discovery Vocabulary |
Variable fluorescence parameters
|
CRUISE SUMMARY REPORT INVENTORY (CSR) | 486_15005600 |
SeaVoX Platform Categories | research vessel |
MEDIN data format categories |
Network Common Data Form
|
Karakterset | UTF-8: 8-bit variabele grootte universele karakterset, gebaseerd op ISO/IEC 10646 |
---|---|
Categorie(ën) |
Begrenzing
Omschrijving geografische begrenzing | |
---|---|
Identificator geografische begrenzing |
Begrenzing
Omschrijving geografische begrenzing | |||||||||
---|---|---|---|---|---|---|---|---|---|
Omschrijvende rechthoek
|
|||||||||
Identificator geografische begrenzing |
Referentiesysteem
Horizontaal en/of verticaal referentiesysteem
Naam | WGS 1984 |
---|
Kwaliteit
Niveau kwaliteitsinformatie | Dataset: Informatie heeft betrekking op de dataset. |
---|
Bewerkingen
Algemene beschrijving herkomst | Quality controlled data,Processed data|Physical data associated with the ABRACO cruise. The ABRACOS (Acoustics along the BRAzilian COaSt) cruise aims to begin an integrated approach to monitoring the tropical marine ecosystems in the Brazilian Nordeste region in order to better understand the connectivity between the sub-systems composing it. In particular, this cruise should fill this gap and improve understanding of the degree of connectivity which exists between the oceanic islands and the continental margin in the Nordeste of Brazil, as well as within the continental platform. In this context, the main objective of the ABRACOS cruise consisted in drawing up a 3D characterization of abiotic and biotic compartments and their interactions in the Brazilian Nordeste. Specific objectives: Objective 1 - Characterization of island and coastal dynamics. Measurement of hydrological characteristics and currents (rosette, CTD, ADCP) should enable the circulation and characteristics of water masses to be described. These data will be more specifically used to study the physical connections between 1) the oceanic islands and coastal ecosystems and 2) the coast along the ocean and coastal zones. The in-situ measurements obtained will also be used to validate high resolution regional hydrodynamic models (e.g. ROMS model) which will be implemented. In-situ data acquired during the ABRACOS cruise will be supplemented by satellite data for sea surface heights (e.g. AVISO), surface temperature and chlorophyll (e.g. MODIS) and wind (e.g. ASCAT). However, it should be noted that the resolution of the products usually used and land-ocean interferences on altimetry and backscatter data will not allow these products to be used at less than 30-50 km from the coast. We will be able to partially eliminate this problem by using new "alongtrack" processing of altimetric data performed by the Center for Topographic studies of the Ocean and Hydrosphere in Toulouse. These data will be used to document the geostrophic (from sea level) ageostrophic (from wind) components of surface circulation and their variability in coastal zones. Objective 2 - Ecosystem acoustics. Acoustic tools can provide the simultaneous acquisition of quantitative and qualitative data, at different spatial-temporal scales, in numerous biotic and abiotic compartments of an ecosystem. These data can be used to characterize the ecosystem in three dimensions and directly study interactions between compartments. Active acoustics have rarely been used in tropical coastal zones. The multifrequency (38, 70, 120, and 200 kHz) acoustic data acquired during the ABRACOS cruise will be used to create an initial 3D characterization of island and coastal ecosystems in the Brazilian Nordeste region, simultaneously characterizing the seabed and water column, when possible. The French team proposing this has sound experience in the field and developed the open source 'Echopen' software in Brest (www.france-nord.ird.fr/lesressources/outils-informatiques) which can separate the various sources of acoustic echoes (e.g. zooplankton, gelatinous organisms and fish) from multifrequency acoustic data. In order to calibrate the 'Echopen Brésil' version, acoustic observations from the ABRACOS cruise must be combined with sampling using micronekton, mesopelagic and bottom trawls (Leg 2 only) and sampling of zooplankton at fixed stations (bongo and WP2 plankton nets and phytoplankton nets). To validate the 'Echopen substrat' tool we will use sampling done with bottom trawl, substrate grab and video camera observations. Objective 3 - Biodiversity and trophic structure. As indicated, acoustic observations will be complemented by in-situ sampling of planktonic, pelagic (mid-water trawls) and demersal-benthic (bottom trawl) organisms. This will involve establishing how hydrological conditions determine the vertical distribution of organisms and therefore interactions. One part of the sampled organisms will be conserved in formaldehyde then identified by taxonomists at the Federal university of Rio de Janeiro (UFRJ) to be added to Brazilian collections. The remainder of the samples will be used to obtain biological information. Along with the classic biological measurements (size, weight, sex, maturity, etc.) specimens of entire organisms (plankton) and soft tissues (muscles) will be taken in order to titrate various trophic tracers: stable isotopes of carbon, nitrogen and insofar as possible mercury. In addition, particulate organic matter (POM) will be collected by filtration (samples taken by rosette) to titrate the amounts of stable isotopes. Spatial variations in these tracers will make it possible to highlight the relative positions of these organisms in the food web and variations in food sources through the local POM signatures. Measurements of methylmercury (MeHg), a neurotoxin which accumulates in the food chain, will also be performed on part of the samples used for stable isotopes. The related projects are ABRACOS and Action Incitative IRD "DANOB". |
---|
Conformiteit
Domeinconsistentie
Resultaat
|
Domeinconsistentie
Resultaat
|
Domeinconsistentie
Resultaat
|
Toegangs- en gebruiksbeperkingen
Legale en veiligheidsbeperkingen
Beperkingen van de dataset(serie)
|
|||||||||||
Beperkingen van de dataset(serie)
|
Distributie
Overdracht
|
Meta-metadata
Metadata identificator (fileIdentifier) | a53ad03f-3736-7363-3636-000000076696 | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Taal metadatarecord | Engels | ||||||||||||||
Karakterset metadatarecord | UTF-8: 8-bit variabele grootte universele karakterset, gebaseerd op ISO/IEC 10646 | ||||||||||||||
Hiërarchisch niveau | Dataset: Informatie heeft betrekking op de dataset. | ||||||||||||||
Metadata wijzigingsdatum | 2024-10-01T00:00:00 | ||||||||||||||
Naam metadatastandaard | ISO 19115:2003/19139 | ||||||||||||||
Versie metadatastandaard | 1.0 | ||||||||||||||
Metadata-auteur
|