DREAMER-1 Cruise, RV Sarmiento de Gamboa

DREAMER-1 Cruise (29SG20170313) carried out on the Research Vessel Sarmiento de Gamboa in 2017 The European hake, Merluccius merluccius L., is one of the most important economical fisheries in the North-East Atlantic that also plays a key role in the marine ecosystem. After the implementation by the...

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Bibliographic Details
Main Authors: Saborido-Rey, Fran, CSIC - Unidad de Tecnología Marina (UTM)
Format: Dataset
Language:unknown
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/10261/232061
https://doi.org/10.20351/29SG20170313
id ftcsic:oai:digital.csic.es:10261/232061
record_format openpolar
spelling ftcsic:oai:digital.csic.es:10261/232061 2024-02-11T10:06:55+01:00 DREAMER-1 Cruise, RV Sarmiento de Gamboa Saborido-Rey, Fran CSIC - Unidad de Tecnología Marina (UTM) 2017 http://hdl.handle.net/10261/232061 https://doi.org/10.20351/29SG20170313 unknown https://doi.org/10.20351/29SG20170313 http://hdl.handle.net/10261/232061 doi:10.20351/29SG20170313 none http://aims.fao.org/aos/agrovoc/c_4609 http://aims.fao.org/aos/agrovoc/c_69c4ff63 http://aims.fao.org/aos/agrovoc/c_29120 Ecología marina Pesca comercial Atlántico del Norte dataset http://purl.org/coar/resource_type/c_ddb1 2017 ftcsic https://doi.org/10.20351/29SG20170313 2024-01-16T11:03:53Z DREAMER-1 Cruise (29SG20170313) carried out on the Research Vessel Sarmiento de Gamboa in 2017 The European hake, Merluccius merluccius L., is one of the most important economical fisheries in the North-East Atlantic that also plays a key role in the marine ecosystem. After the implementation by the EU of various recovery plans for both stocks, the spawning biomass has recently recuperated, after more than two decades under the security limits. However, recruitment remains highly variable, and in the case of the Southern stock (SS) still decreasing. The overall objective of the project is to analyze the causes that determine hake recruitment with special attention to the demographic and environmental causes and focusing in particular in the seasonal differences in the spawning pattern (SS hake shows two spawning peaks, in late winter and late spring-summer), larval distribution, trophic dynamics of larvae, seasonal differences in recruitment and connectivity patterns between stocks. To achieve these objectives the project will carry out two research surveys, in March and June 2017 within the main hake spawning area, between Cape Finisterre and Eo estuary. The main goals of the surveys are to determine the distributional pattern of hake larvae and the factors determining the observed pattern (climatic, oceanographic and foraging) and collecting biological samples in several life stages: from larvae to young of the year recruits. March survey (DRE0317) was divided in two legs. The first one aimed to characterize environmental conditions and larval abundance along 18 transects orthogonal to the coast, covering the whole research area, and summing 114 fixed stations. Each transect was drawn every 8 nautical miles, while the stations within transect was separated every 4 nm. In each station it was performed an oblique Bongo (60 cm, 500 m mesh size), a vertical pairovet (60 and 150 m) and a CTD profile to estimate hake larval abundance, ichthyoplankton community, micro and mesozooplankton and oceanographic ... Dataset North East Atlantic Digital.CSIC (Spanish National Research Council) Hake ENVELOPE(15.612,15.612,66.797,66.797) Sarmiento ENVELOPE(-68.000,-68.000,-72.000,-72.000)
institution Open Polar
collection Digital.CSIC (Spanish National Research Council)
op_collection_id ftcsic
language unknown
topic http://aims.fao.org/aos/agrovoc/c_4609
http://aims.fao.org/aos/agrovoc/c_69c4ff63
http://aims.fao.org/aos/agrovoc/c_29120
Ecología marina
Pesca comercial
Atlántico del Norte
spellingShingle http://aims.fao.org/aos/agrovoc/c_4609
http://aims.fao.org/aos/agrovoc/c_69c4ff63
http://aims.fao.org/aos/agrovoc/c_29120
Ecología marina
Pesca comercial
Atlántico del Norte
Saborido-Rey, Fran
CSIC - Unidad de Tecnología Marina (UTM)
DREAMER-1 Cruise, RV Sarmiento de Gamboa
topic_facet http://aims.fao.org/aos/agrovoc/c_4609
http://aims.fao.org/aos/agrovoc/c_69c4ff63
http://aims.fao.org/aos/agrovoc/c_29120
Ecología marina
Pesca comercial
Atlántico del Norte
description DREAMER-1 Cruise (29SG20170313) carried out on the Research Vessel Sarmiento de Gamboa in 2017 The European hake, Merluccius merluccius L., is one of the most important economical fisheries in the North-East Atlantic that also plays a key role in the marine ecosystem. After the implementation by the EU of various recovery plans for both stocks, the spawning biomass has recently recuperated, after more than two decades under the security limits. However, recruitment remains highly variable, and in the case of the Southern stock (SS) still decreasing. The overall objective of the project is to analyze the causes that determine hake recruitment with special attention to the demographic and environmental causes and focusing in particular in the seasonal differences in the spawning pattern (SS hake shows two spawning peaks, in late winter and late spring-summer), larval distribution, trophic dynamics of larvae, seasonal differences in recruitment and connectivity patterns between stocks. To achieve these objectives the project will carry out two research surveys, in March and June 2017 within the main hake spawning area, between Cape Finisterre and Eo estuary. The main goals of the surveys are to determine the distributional pattern of hake larvae and the factors determining the observed pattern (climatic, oceanographic and foraging) and collecting biological samples in several life stages: from larvae to young of the year recruits. March survey (DRE0317) was divided in two legs. The first one aimed to characterize environmental conditions and larval abundance along 18 transects orthogonal to the coast, covering the whole research area, and summing 114 fixed stations. Each transect was drawn every 8 nautical miles, while the stations within transect was separated every 4 nm. In each station it was performed an oblique Bongo (60 cm, 500 m mesh size), a vertical pairovet (60 and 150 m) and a CTD profile to estimate hake larval abundance, ichthyoplankton community, micro and mesozooplankton and oceanographic ...
format Dataset
author Saborido-Rey, Fran
CSIC - Unidad de Tecnología Marina (UTM)
author_facet Saborido-Rey, Fran
CSIC - Unidad de Tecnología Marina (UTM)
author_sort Saborido-Rey, Fran
title DREAMER-1 Cruise, RV Sarmiento de Gamboa
title_short DREAMER-1 Cruise, RV Sarmiento de Gamboa
title_full DREAMER-1 Cruise, RV Sarmiento de Gamboa
title_fullStr DREAMER-1 Cruise, RV Sarmiento de Gamboa
title_full_unstemmed DREAMER-1 Cruise, RV Sarmiento de Gamboa
title_sort dreamer-1 cruise, rv sarmiento de gamboa
publishDate 2017
url http://hdl.handle.net/10261/232061
https://doi.org/10.20351/29SG20170313
long_lat ENVELOPE(15.612,15.612,66.797,66.797)
ENVELOPE(-68.000,-68.000,-72.000,-72.000)
geographic Hake
Sarmiento
geographic_facet Hake
Sarmiento
genre North East Atlantic
genre_facet North East Atlantic
op_relation https://doi.org/10.20351/29SG20170313
http://hdl.handle.net/10261/232061
doi:10.20351/29SG20170313
op_rights none
op_doi https://doi.org/10.20351/29SG20170313
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