Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic
The vertical distributions of early developmental stages of oceanic fishes were investigated across the tropical and equatorial Atlantic, from oligotrophic waters close to the Brazilian coast to more productive waters close to the Mauritanian Upwelling Region. Stratification of the water column was...
Published in: | Progress in Oceanography |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2018
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/59039/ https://oceanrep.geomar.de/id/eprint/59039/1/Olivar.pdf https://doi.org/10.1016/j.pocean.2017.12.005 |
id |
ftoceanrep:oai:oceanrep.geomar.de:59039 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:59039 2023-08-27T04:11:02+02:00 Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic Olivar, M. Pilar Contreras, Tabit Hulley, P. Alexander Emelianov, Mikhail López-Pérez, Cristina Tuset, Víctor Castellón, Arturo 2018-01 text https://oceanrep.geomar.de/id/eprint/59039/ https://oceanrep.geomar.de/id/eprint/59039/1/Olivar.pdf https://doi.org/10.1016/j.pocean.2017.12.005 en eng Elsevier https://oceanrep.geomar.de/id/eprint/59039/1/Olivar.pdf Olivar, M. P., Contreras, T., Hulley, P. A., Emelianov, M., López-Pérez, C., Tuset, V. and Castellón, A. (2018) Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic. Progress in Oceanography, 160 . pp. 83-100. DOI 10.1016/j.pocean.2017.12.005 <https://doi.org/10.1016/j.pocean.2017.12.005>. doi:10.1016/j.pocean.2017.12.005 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2018 ftoceanrep https://doi.org/10.1016/j.pocean.2017.12.005 2023-08-06T23:19:58Z The vertical distributions of early developmental stages of oceanic fishes were investigated across the tropical and equatorial Atlantic, from oligotrophic waters close to the Brazilian coast to more productive waters close to the Mauritanian Upwelling Region. Stratification of the water column was observed throughout the study region. Fishes were caught with a MOCNESS-1 net with mouth area of 1 m2 at 11 stations. Each station was sampled both during the day and at night within a single 24-h period. The investigation covered both larvae and transforming stages from the surface to 800 m depth. Distribution patterns were analysed, and weighted mean depths for the larvae and transforming stages of each species were calculated for day and night conditions. Forty-seven different species were found. The highest number of species occurred in the three stations south of Cape Verde Islands, characterized by a mixture of South Atlantic Central Water (SACW) and Eastern North Atlantic Central Water (ENACW). There was a marked drop in species richness in the three stations closer to the African upwelling, dominated by ENACW. The highest abundances occurred in the families Myctophidae, Sternoptychidae, Gonostomatidae and Phosichthyidae. Day and night vertical distributions of larvae and transforming stages showed contrasting patterns, both in the depths of the main concentration layers in the water column, and in the diel migration patterns (where these were observed). Larvae generally showed a preference for the upper mixed layer (ca. 0–50 m) and upper thermocline (ca. 50–100 m), except for sternoptychids, which were also abundant in the lower thermocline layer (100–200 m) and even extended into the mesopelagic zone (down to 500 m). Transforming stages showed a more widespread distribution, with main concentrations in the mesopelagic zone (200–800 m). Larvae showed peak concentrations in the more illuminated and zooplankton-rich upper mixed layers during the day and a wider distribution through the upper 100 m during the ... Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Progress in Oceanography 160 83 100 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The vertical distributions of early developmental stages of oceanic fishes were investigated across the tropical and equatorial Atlantic, from oligotrophic waters close to the Brazilian coast to more productive waters close to the Mauritanian Upwelling Region. Stratification of the water column was observed throughout the study region. Fishes were caught with a MOCNESS-1 net with mouth area of 1 m2 at 11 stations. Each station was sampled both during the day and at night within a single 24-h period. The investigation covered both larvae and transforming stages from the surface to 800 m depth. Distribution patterns were analysed, and weighted mean depths for the larvae and transforming stages of each species were calculated for day and night conditions. Forty-seven different species were found. The highest number of species occurred in the three stations south of Cape Verde Islands, characterized by a mixture of South Atlantic Central Water (SACW) and Eastern North Atlantic Central Water (ENACW). There was a marked drop in species richness in the three stations closer to the African upwelling, dominated by ENACW. The highest abundances occurred in the families Myctophidae, Sternoptychidae, Gonostomatidae and Phosichthyidae. Day and night vertical distributions of larvae and transforming stages showed contrasting patterns, both in the depths of the main concentration layers in the water column, and in the diel migration patterns (where these were observed). Larvae generally showed a preference for the upper mixed layer (ca. 0–50 m) and upper thermocline (ca. 50–100 m), except for sternoptychids, which were also abundant in the lower thermocline layer (100–200 m) and even extended into the mesopelagic zone (down to 500 m). Transforming stages showed a more widespread distribution, with main concentrations in the mesopelagic zone (200–800 m). Larvae showed peak concentrations in the more illuminated and zooplankton-rich upper mixed layers during the day and a wider distribution through the upper 100 m during the ... |
format |
Article in Journal/Newspaper |
author |
Olivar, M. Pilar Contreras, Tabit Hulley, P. Alexander Emelianov, Mikhail López-Pérez, Cristina Tuset, Víctor Castellón, Arturo |
spellingShingle |
Olivar, M. Pilar Contreras, Tabit Hulley, P. Alexander Emelianov, Mikhail López-Pérez, Cristina Tuset, Víctor Castellón, Arturo Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic |
author_facet |
Olivar, M. Pilar Contreras, Tabit Hulley, P. Alexander Emelianov, Mikhail López-Pérez, Cristina Tuset, Víctor Castellón, Arturo |
author_sort |
Olivar, M. Pilar |
title |
Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic |
title_short |
Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic |
title_full |
Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic |
title_fullStr |
Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic |
title_full_unstemmed |
Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic |
title_sort |
variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial atlantic |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://oceanrep.geomar.de/id/eprint/59039/ https://oceanrep.geomar.de/id/eprint/59039/1/Olivar.pdf https://doi.org/10.1016/j.pocean.2017.12.005 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/59039/1/Olivar.pdf Olivar, M. P., Contreras, T., Hulley, P. A., Emelianov, M., López-Pérez, C., Tuset, V. and Castellón, A. (2018) Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic. Progress in Oceanography, 160 . pp. 83-100. DOI 10.1016/j.pocean.2017.12.005 <https://doi.org/10.1016/j.pocean.2017.12.005>. doi:10.1016/j.pocean.2017.12.005 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.pocean.2017.12.005 |
container_title |
Progress in Oceanography |
container_volume |
160 |
container_start_page |
83 |
op_container_end_page |
100 |
_version_ |
1775353488067264512 |