Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone
Converging water masses and mesoscale eddies shape habitats for larval fish assemblages in upwelling ecosystems. In the Canary Current Upwelling Ecosystem, two water masses, the North Atlantic Central Water (NACW) and the South Atlantic Central Water (SACW) converge. The resulting Cape Verde Frontal...
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ftopenagrar:oai:www.openagrar.de:openagrar_mods_00042123 2024-09-15T18:23:58+00:00 Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone Tiedemann, Maik Fock, Heino Ove Döring, Julian Badji, Luc Bonaventure Möllmann, Christian 2018 https://doi.org/10.1016/j.jmarsys.2018.03.004 https://www.openagrar.de/receive/openagrar_mods_00042123 eng eng Journal of marine systems : journal of the European Association of Marine Sciences and Techniques -- 0924-7963 -- 1041191-4 https://doi.org/10.1016/j.jmarsys.2018.03.004 https://www.openagrar.de/receive/openagrar_mods_00042123 only signed in user all rights reserved info:eu-repo/semantics/restrictedAccess Text article ddc:570 Upwelling -- Larval retention -- Convergence zone -- Banc d'Arguin -- Canary Current Upwelling Ecosystem article Text doc-type:article 2018 ftopenagrar https://doi.org/10.1016/j.jmarsys.2018.03.004 2024-07-08T23:56:25Z Converging water masses and mesoscale eddies shape habitats for larval fish assemblages in upwelling ecosystems. In the Canary Current Upwelling Ecosystem, two water masses, the North Atlantic Central Water (NACW) and the South Atlantic Central Water (SACW) converge. The resulting Cape Verde Frontal Zone (CVFZ) is located off the Banc d'Arguin, Mauritania, an important nursery ground for fishes. We investigated the impact of two converging water masses and a mesoscale anticyclonic eddy on the composition and distribution of larval fish assemblages during an upwelling event. Two distinct larval fish assemblages allowed for the reconstruction of water mass distributions along the CVFZ. While the distribution pattern of Dicologlossa cuneata covered the shelf area in the North by NACW characteristics, Helicolenus dactylopterus, Bathylagoides argyrogaster, Hygophum macrochir, and Notoscopelus resplendens were almost exclusively observed in the offshore area in the South with SACW characteristics. This emergence of a dichotomy in larval fish assemblages was facilitated by the CVFZ and the mesoscale anticyclonic eddy, which retained fish larvae in SACW offshore. Coastal geostrophic currents on the other hand transported fish larvae from the North southward in NACW towards the Banc d'Arguin. The coastal geostrophic currents abetted an onshore surface water flow of upwelled water masses. This process facilitated a phytoplankton bloom on the Banc d'Arguin and possibly enabled a larval transport towards suitable nurseries. Our results have profound implications regarding the comprehension of hydrographical processes that govern the dispersal and retention of fish larvae. Our findings further shed light on the establishment of assemblages and the habitat expansion of fish larvae in upwelling ecosystems. Article in Journal/Newspaper North Atlantic OpenAgrar (OA) Journal of Marine Systems 183 42 55 |
institution |
Open Polar |
collection |
OpenAgrar (OA) |
op_collection_id |
ftopenagrar |
language |
English |
topic |
Text article ddc:570 Upwelling -- Larval retention -- Convergence zone -- Banc d'Arguin -- Canary Current Upwelling Ecosystem |
spellingShingle |
Text article ddc:570 Upwelling -- Larval retention -- Convergence zone -- Banc d'Arguin -- Canary Current Upwelling Ecosystem Tiedemann, Maik Fock, Heino Ove Döring, Julian Badji, Luc Bonaventure Möllmann, Christian Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone |
topic_facet |
Text article ddc:570 Upwelling -- Larval retention -- Convergence zone -- Banc d'Arguin -- Canary Current Upwelling Ecosystem |
description |
Converging water masses and mesoscale eddies shape habitats for larval fish assemblages in upwelling ecosystems. In the Canary Current Upwelling Ecosystem, two water masses, the North Atlantic Central Water (NACW) and the South Atlantic Central Water (SACW) converge. The resulting Cape Verde Frontal Zone (CVFZ) is located off the Banc d'Arguin, Mauritania, an important nursery ground for fishes. We investigated the impact of two converging water masses and a mesoscale anticyclonic eddy on the composition and distribution of larval fish assemblages during an upwelling event. Two distinct larval fish assemblages allowed for the reconstruction of water mass distributions along the CVFZ. While the distribution pattern of Dicologlossa cuneata covered the shelf area in the North by NACW characteristics, Helicolenus dactylopterus, Bathylagoides argyrogaster, Hygophum macrochir, and Notoscopelus resplendens were almost exclusively observed in the offshore area in the South with SACW characteristics. This emergence of a dichotomy in larval fish assemblages was facilitated by the CVFZ and the mesoscale anticyclonic eddy, which retained fish larvae in SACW offshore. Coastal geostrophic currents on the other hand transported fish larvae from the North southward in NACW towards the Banc d'Arguin. The coastal geostrophic currents abetted an onshore surface water flow of upwelled water masses. This process facilitated a phytoplankton bloom on the Banc d'Arguin and possibly enabled a larval transport towards suitable nurseries. Our results have profound implications regarding the comprehension of hydrographical processes that govern the dispersal and retention of fish larvae. Our findings further shed light on the establishment of assemblages and the habitat expansion of fish larvae in upwelling ecosystems. |
format |
Article in Journal/Newspaper |
author |
Tiedemann, Maik Fock, Heino Ove Döring, Julian Badji, Luc Bonaventure Möllmann, Christian |
author_facet |
Tiedemann, Maik Fock, Heino Ove Döring, Julian Badji, Luc Bonaventure Möllmann, Christian |
author_sort |
Tiedemann, Maik |
title |
Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone |
title_short |
Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone |
title_full |
Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone |
title_fullStr |
Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone |
title_full_unstemmed |
Water masses and oceanic eddy regulation of larval fish assemblages along the Cape Verde Frontal Zone |
title_sort |
water masses and oceanic eddy regulation of larval fish assemblages along the cape verde frontal zone |
publishDate |
2018 |
url |
https://doi.org/10.1016/j.jmarsys.2018.03.004 https://www.openagrar.de/receive/openagrar_mods_00042123 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of marine systems : journal of the European Association of Marine Sciences and Techniques -- 0924-7963 -- 1041191-4 https://doi.org/10.1016/j.jmarsys.2018.03.004 https://www.openagrar.de/receive/openagrar_mods_00042123 |
op_rights |
only signed in user all rights reserved info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.jmarsys.2018.03.004 |
container_title |
Journal of Marine Systems |
container_volume |
183 |
container_start_page |
42 |
op_container_end_page |
55 |
_version_ |
1810464263629701120 |