African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna
Atmospheric deposition of desert dust and other aerosols influence on the open ocean ecosystem and climate. These aerosols provide iron, phosphorus and bio-essential trace elements, which affect the composition and growth of phytoplankton, generating new organic matter that is distributed across the...
Published in: | Atmospheric Environment |
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2023
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Online Access: | http://hdl.handle.net/10553/124534 https://doi.org/10.1016/j.atmosenv.2023.120022 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/124534 2023-12-03T10:27:27+01:00 African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna Rodríguez, Sergio Riera Elena, Rodrigo Fonteneau, Alain Alonso-Pérez, Silvia López-Darias, Jessica orcid:0000-0002-1727-3107 orcid:0000-0003-1264-1625 NO DATA orcid:0000-0003-0572-6081 56985219600 7003416980 56074715600 23972269300 23568114600 282983 2147624 21461298 38880923 49800439 WOS:Rodríguez, S WOS:Riera, R WOS:Fonteneau, A WOS:Alonso-Pérez, S WOS:López-Darias, J BU-BAS 2023 http://hdl.handle.net/10553/124534 https://doi.org/10.1016/j.atmosenv.2023.120022 eng eng Atmospheric environment (1994) 312 1352-2310 Scopus http://hdl.handle.net/10553/124534 doi:10.1016/j.atmosenv.2023.120022 85168153556 001065632800001 1873-2844 Sí Atmospheric Environment [ISSN 1352-2310], v. 312, (Noviembre 2023) 2502 Climatología 2510 Oceanografía 531201 Agricultura silvicultura pesca African Desert Dust Dust Deposition Ocean Fertilization Skipjack Fisheries Skipjack Tuna info:eu-repo/semantics/Article Article 2023 ftunivlaspalmas https://doi.org/10.1016/j.atmosenv.2023.120022 2023-11-08T00:16:52Z Atmospheric deposition of desert dust and other aerosols influence on the open ocean ecosystem and climate. These aerosols provide iron, phosphorus and bio-essential trace elements, which affect the composition and growth of phytoplankton, generating new organic matter that is distributed across the food web. Although this process has an impact on upper trophic levels and fisheries, direct evidence is lacking. Skipjack tropical tuna (Katsuwonus pelamis) is the most important commercial tuna in the Atlantic, main stocks occur in the tropical and subtropical North-East Atlantic. We found that the migrations and fisheries of skipjack are connected to Saharan dust variability. From boreal winter to summer, skipjack performs an Atlantic-Saharan migration, from equatorial (0-5°N) to subtropical waters of the North-East Atlantic (regularly reaching open waters off Mauritania ∼20°N and the Canary Islands ∼28°N), tracking the seasonal shift of dust deposition in the North-East Atlantic. The observed long-term associations of skipjack catch with the seasonal cycles, anomalies and meridional variability of dust over the North-East Atlantic, shows that along the year skipjack catches mainly occur in waters affected by massive dust deposition linked (i) to dust wet deposition in tropical waters and (ii) to dust dry deposition in the Saharan desert-dust outflow. Atmospheric deposition of dust in the open ocean and in upwelling waters contributes to support zooplankton-rich areas, which are optimal for feeding small fish, molluscs and cephalopods, and suitable for feeding large predators, as skipjacks, where they are caught in abundance. The most important fishing area of Atlantic skipjack tuna is located off North West Africa in the waters affected by massive dust deposition that underly the dusty airstream from the North Africa desert. The role of dust as fertilizing and supporter of phytoplankton and zooplankton rich areas also has implications for other species of fishing interest, including other tropical tuna (e.g. ... Article in Journal/Newspaper North East Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Atmospheric Environment 312 120022 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
2502 Climatología 2510 Oceanografía 531201 Agricultura silvicultura pesca African Desert Dust Dust Deposition Ocean Fertilization Skipjack Fisheries Skipjack Tuna |
spellingShingle |
2502 Climatología 2510 Oceanografía 531201 Agricultura silvicultura pesca African Desert Dust Dust Deposition Ocean Fertilization Skipjack Fisheries Skipjack Tuna Rodríguez, Sergio Riera Elena, Rodrigo Fonteneau, Alain Alonso-Pérez, Silvia López-Darias, Jessica African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna |
topic_facet |
2502 Climatología 2510 Oceanografía 531201 Agricultura silvicultura pesca African Desert Dust Dust Deposition Ocean Fertilization Skipjack Fisheries Skipjack Tuna |
description |
Atmospheric deposition of desert dust and other aerosols influence on the open ocean ecosystem and climate. These aerosols provide iron, phosphorus and bio-essential trace elements, which affect the composition and growth of phytoplankton, generating new organic matter that is distributed across the food web. Although this process has an impact on upper trophic levels and fisheries, direct evidence is lacking. Skipjack tropical tuna (Katsuwonus pelamis) is the most important commercial tuna in the Atlantic, main stocks occur in the tropical and subtropical North-East Atlantic. We found that the migrations and fisheries of skipjack are connected to Saharan dust variability. From boreal winter to summer, skipjack performs an Atlantic-Saharan migration, from equatorial (0-5°N) to subtropical waters of the North-East Atlantic (regularly reaching open waters off Mauritania ∼20°N and the Canary Islands ∼28°N), tracking the seasonal shift of dust deposition in the North-East Atlantic. The observed long-term associations of skipjack catch with the seasonal cycles, anomalies and meridional variability of dust over the North-East Atlantic, shows that along the year skipjack catches mainly occur in waters affected by massive dust deposition linked (i) to dust wet deposition in tropical waters and (ii) to dust dry deposition in the Saharan desert-dust outflow. Atmospheric deposition of dust in the open ocean and in upwelling waters contributes to support zooplankton-rich areas, which are optimal for feeding small fish, molluscs and cephalopods, and suitable for feeding large predators, as skipjacks, where they are caught in abundance. The most important fishing area of Atlantic skipjack tuna is located off North West Africa in the waters affected by massive dust deposition that underly the dusty airstream from the North Africa desert. The role of dust as fertilizing and supporter of phytoplankton and zooplankton rich areas also has implications for other species of fishing interest, including other tropical tuna (e.g. ... |
author2 |
orcid:0000-0002-1727-3107 orcid:0000-0003-1264-1625 NO DATA orcid:0000-0003-0572-6081 56985219600 7003416980 56074715600 23972269300 23568114600 282983 2147624 21461298 38880923 49800439 WOS:Rodríguez, S WOS:Riera, R WOS:Fonteneau, A WOS:Alonso-Pérez, S WOS:López-Darias, J BU-BAS |
format |
Article in Journal/Newspaper |
author |
Rodríguez, Sergio Riera Elena, Rodrigo Fonteneau, Alain Alonso-Pérez, Silvia López-Darias, Jessica |
author_facet |
Rodríguez, Sergio Riera Elena, Rodrigo Fonteneau, Alain Alonso-Pérez, Silvia López-Darias, Jessica |
author_sort |
Rodríguez, Sergio |
title |
African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna |
title_short |
African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna |
title_full |
African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna |
title_fullStr |
African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna |
title_full_unstemmed |
African desert dust influences migrations and fisheries of the Atlantic skipjack-tuna |
title_sort |
african desert dust influences migrations and fisheries of the atlantic skipjack-tuna |
publishDate |
2023 |
url |
http://hdl.handle.net/10553/124534 https://doi.org/10.1016/j.atmosenv.2023.120022 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Atmospheric Environment [ISSN 1352-2310], v. 312, (Noviembre 2023) |
op_relation |
Atmospheric environment (1994) 312 1352-2310 Scopus http://hdl.handle.net/10553/124534 doi:10.1016/j.atmosenv.2023.120022 85168153556 001065632800001 1873-2844 Sí |
op_doi |
https://doi.org/10.1016/j.atmosenv.2023.120022 |
container_title |
Atmospheric Environment |
container_volume |
312 |
container_start_page |
120022 |
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1784277224103346176 |