Top marine predators track Lagrangian coherent structures. Tew-Kai, E., Rossi, V., Sudre, J., Weimerskirch, H., Hernandez-Garcia, E., Marsac, F., & Garçon, V. Proceedings of the National Academy of Sciences of the United States of America, 106:8245--8250, 2009. ACLdoi abstract bibtex Meso- and submesoscales (fronts, eddies, filaments) in surface ocean flow have a crucial influence on marine ecosystems. Their dynamics partly control the foraging behavior and the displacement of marine top predators (tuna, birds, turtles, and cetaceans). In this work we focus on the role of submesoscale structures in the Mozambique Channel in the distribution of a marine predator, the Great Frigatebird. Using a newly developed dynamic concept, the finite-size Lyapunov exponent (FSLE), we identified Lagrangian coherent structures (LCSs) present in the surface flow in the channel over a 2-month observation period (August and September 2003). By comparing seabird satellite positions with LCS locations, we demonstrate that frigatebirds track precisely these structures in the Mozambique Channel, providing the first evidence that a top predator is able to track these FSLE ridges to locate food patches. After comparing bird positions during long and short trips and different parts of these trips, we propose several hypotheses to understand how frigatebirds can follow these LCSs. The birds might use visual and/or olfactory cues and/or atmospheric current changes over the structures to move along these biologic corridors. The birds being often associated with tuna schools around foraging areas, a thorough comprehension of their foraging behavior and movement during the breeding season is crucial not only to seabird ecology but also to an appropriate ecosystemic approach to fisheries in the channel.
@article{ tew-kai_top_2009,
title = {Top marine predators track Lagrangian coherent structures},
volume = {106},
issn = {0027-8424},
doi = {10.1073/pnas.0811034106},
abstract = {Meso- and submesoscales (fronts, eddies, filaments) in surface ocean flow have a crucial influence on marine ecosystems. Their dynamics partly control the foraging behavior and the displacement of marine top predators (tuna, birds, turtles, and cetaceans). In this work we focus on the role of submesoscale structures in the Mozambique Channel in the distribution of a marine predator, the Great Frigatebird. Using a newly developed dynamic concept, the finite-size Lyapunov exponent ({FSLE}), we identified Lagrangian coherent structures ({LCSs}) present in the surface flow in the channel over a 2-month observation period (August and September 2003). By comparing seabird satellite positions with {LCS} locations, we demonstrate that frigatebirds track precisely these structures in the Mozambique Channel, providing the first evidence that a top predator is able to track these {FSLE} ridges to locate food patches. After comparing bird positions during long and short trips and different parts of these trips, we propose several hypotheses to understand how frigatebirds can follow these {LCSs}. The birds might use visual and/or olfactory cues and/or atmospheric current changes over the structures to move along these biologic corridors. The birds being often associated with tuna schools around foraging areas, a thorough comprehension of their foraging behavior and movement during the breeding season is crucial not only to seabird ecology but also to an appropriate ecosystemic approach to fisheries in the channel.},
language = {Eng},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
author = {Tew-Kai, Emilie and Rossi, Vincent and Sudre, Joel and Weimerskirch, Henri and Hernandez-Garcia, Emilio and Marsac, Francis and Garçon, Véronique},
year = {2009},
note = {{ACL}},
keywords = {Mozambique Channel, finite-size Lyapunov exponent, frigatebird, submesoscale},
pages = {8245--8250}
}
Downloads: 0
{"_id":"qMjgkCewnDHJXZJm2","authorIDs":[],"author_short":["Tew-Kai, E.","Rossi, V.","Sudre, J.","Weimerskirch, H.","Hernandez-Garcia, E.","Marsac, F.","Garçon, V."],"bibbaseid":"tewkai-rossi-sudre-weimerskirch-hernandezgarcia-marsac-garon-topmarinepredatorstracklagrangiancoherentstructures-2009","bibdata":{"abstract":"Meso- and submesoscales (fronts, eddies, filaments) in surface ocean flow have a crucial influence on marine ecosystems. Their dynamics partly control the foraging behavior and the displacement of marine top predators (tuna, birds, turtles, and cetaceans). In this work we focus on the role of submesoscale structures in the Mozambique Channel in the distribution of a marine predator, the Great Frigatebird. Using a newly developed dynamic concept, the finite-size Lyapunov exponent (FSLE), we identified Lagrangian coherent structures (LCSs) present in the surface flow in the channel over a 2-month observation period (August and September 2003). By comparing seabird satellite positions with LCS locations, we demonstrate that frigatebirds track precisely these structures in the Mozambique Channel, providing the first evidence that a top predator is able to track these FSLE ridges to locate food patches. After comparing bird positions during long and short trips and different parts of these trips, we propose several hypotheses to understand how frigatebirds can follow these LCSs. The birds might use visual and/or olfactory cues and/or atmospheric current changes over the structures to move along these biologic corridors. The birds being often associated with tuna schools around foraging areas, a thorough comprehension of their foraging behavior and movement during the breeding season is crucial not only to seabird ecology but also to an appropriate ecosystemic approach to fisheries in the channel.","author":["Tew-Kai, Emilie","Rossi, Vincent","Sudre, Joel","Weimerskirch, Henri","Hernandez-Garcia, Emilio","Marsac, Francis","Garçon, Véronique"],"author_short":["Tew-Kai, E.","Rossi, V.","Sudre, J.","Weimerskirch, H.","Hernandez-Garcia, E.","Marsac, F.","Garçon, V."],"bibtex":"@article{ tew-kai_top_2009,\n title = {Top marine predators track Lagrangian coherent structures},\n volume = {106},\n issn = {0027-8424},\n doi = {10.1073/pnas.0811034106},\n abstract = {Meso- and submesoscales (fronts, eddies, filaments) in surface ocean flow have a crucial influence on marine ecosystems. Their dynamics partly control the foraging behavior and the displacement of marine top predators (tuna, birds, turtles, and cetaceans). In this work we focus on the role of submesoscale structures in the Mozambique Channel in the distribution of a marine predator, the Great Frigatebird. Using a newly developed dynamic concept, the finite-size Lyapunov exponent ({FSLE}), we identified Lagrangian coherent structures ({LCSs}) present in the surface flow in the channel over a 2-month observation period (August and September 2003). By comparing seabird satellite positions with {LCS} locations, we demonstrate that frigatebirds track precisely these structures in the Mozambique Channel, providing the first evidence that a top predator is able to track these {FSLE} ridges to locate food patches. After comparing bird positions during long and short trips and different parts of these trips, we propose several hypotheses to understand how frigatebirds can follow these {LCSs}. The birds might use visual and/or olfactory cues and/or atmospheric current changes over the structures to move along these biologic corridors. The birds being often associated with tuna schools around foraging areas, a thorough comprehension of their foraging behavior and movement during the breeding season is crucial not only to seabird ecology but also to an appropriate ecosystemic approach to fisheries in the channel.},\n language = {Eng},\n journal = {Proceedings of the National Academy of Sciences of the United States of America},\n author = {Tew-Kai, Emilie and Rossi, Vincent and Sudre, Joel and Weimerskirch, Henri and Hernandez-Garcia, Emilio and Marsac, Francis and Garçon, Véronique},\n year = {2009},\n note = {{ACL}},\n keywords = {Mozambique Channel, finite-size Lyapunov exponent, frigatebird, submesoscale},\n pages = {8245--8250}\n}","bibtype":"article","doi":"10.1073/pnas.0811034106","id":"tew-kai_top_2009","issn":"0027-8424","journal":"Proceedings of the National Academy of Sciences of the United States of America","key":"tew-kai_top_2009","keywords":"Mozambique Channel, finite-size Lyapunov exponent, frigatebird, submesoscale","language":"Eng","note":"ACL","pages":"8245--8250","title":"Top marine predators track Lagrangian coherent structures","type":"article","volume":"106","year":"2009","bibbaseid":"tewkai-rossi-sudre-weimerskirch-hernandezgarcia-marsac-garon-topmarinepredatorstracklagrangiancoherentstructures-2009","role":"author","urls":{},"keyword":["Mozambique Channel","finite-size Lyapunov exponent","frigatebird","submesoscale"],"downloads":0},"bibtype":"article","biburl":"https://api.zotero.org/users/1621677/collections/QK92WEV4/items?key=S3gP4Tt3mSpvUbXvDKwbyvJ7&format=bibtex&limit=100","creationDate":"2014-10-24T18:14:28.929Z","downloads":0,"keywords":["mozambique channel","finite-size lyapunov exponent","frigatebird","submesoscale"],"search_terms":["top","marine","predators","track","lagrangian","coherent","structures","tew-kai","rossi","sudre","weimerskirch","hernandez-garcia","marsac","garçon"],"title":"Top marine predators track Lagrangian coherent structures","year":2009,"dataSources":["uE82A3bEwSqAWmQyN"]}