Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2018 Highly migratory marine fishes support valuable commercial fisheries worldwide. Yet, many target specie...
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Massachusetts Institute of Technology and Woods Hole Oceanographic Institution
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/10644 2023-05-15T17:31:35+02:00 Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean Braun, Camrin D. 2018-09 https://hdl.handle.net/1912/10644 en_US eng Massachusetts Institute of Technology and Woods Hole Oceanographic Institution WHOI Theses https://hdl.handle.net/1912/10644 doi:10.1575/1912/10644 doi:10.1575/1912/10644 Fishes Fisheries Pelagic fishes Eddies Animal marking Thesis 2018 ftwhoas https://doi.org/10.1575/1912/10644 2022-05-28T23:00:30Z Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2018 Highly migratory marine fishes support valuable commercial fisheries worldwide. Yet, many target species have proven difficult to study due to long-distance migrations and regular deep diving. Despite the dominance of oceanographic features, such as fronts and eddies, in the open ocean, the biophysical interactions occurring at the oceanic (sub)mesoscale (< 100 km) remain poorly understood. This leads to a paucity of knowledge on oceanographic associations of pelagic fishes and hinders management efforts. With ever-improving oceanographic datasets and modeling outputs, we can leverage these tools both to derive better estimates of animal movements and to quantify fish-environment interactions. In this thesis, I developed analytical tools to characterize the biophysical interactions influencing animal behavior and species’ ecology in the open ocean. A novel, observation-based likelihood framework was combined with a Bayesian state-space model to improve geolocation estimates for archival-tagged fishes using oceanographic profile data. Using this approach, I constructed track estimates for a large basking shark tag dataset using a high-resolution oceanographic model and discovered a wide range of movement strategies. I also applied this modeling approach to track archival-tagged swordfish, which revealed affinity for thermal front and eddy habitats throughout the North Atlantic that was further corroborated by synthesizing these results with a fisheries-dependent conventional tag dataset. An additive modeling approach applied to longline catch-per-unit effort data further highlighted the biophysical interactions that characterize variability in swordfish catch. In the final chapter, I designed a synergistic analysis of high-resolution, 3D shark movements and satellite observations to quantify the influence of ... Thesis North Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Woods Hole, MA |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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ftwhoas |
language |
English |
topic |
Fishes Fisheries Pelagic fishes Eddies Animal marking |
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Fishes Fisheries Pelagic fishes Eddies Animal marking Braun, Camrin D. Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean |
topic_facet |
Fishes Fisheries Pelagic fishes Eddies Animal marking |
description |
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2018 Highly migratory marine fishes support valuable commercial fisheries worldwide. Yet, many target species have proven difficult to study due to long-distance migrations and regular deep diving. Despite the dominance of oceanographic features, such as fronts and eddies, in the open ocean, the biophysical interactions occurring at the oceanic (sub)mesoscale (< 100 km) remain poorly understood. This leads to a paucity of knowledge on oceanographic associations of pelagic fishes and hinders management efforts. With ever-improving oceanographic datasets and modeling outputs, we can leverage these tools both to derive better estimates of animal movements and to quantify fish-environment interactions. In this thesis, I developed analytical tools to characterize the biophysical interactions influencing animal behavior and species’ ecology in the open ocean. A novel, observation-based likelihood framework was combined with a Bayesian state-space model to improve geolocation estimates for archival-tagged fishes using oceanographic profile data. Using this approach, I constructed track estimates for a large basking shark tag dataset using a high-resolution oceanographic model and discovered a wide range of movement strategies. I also applied this modeling approach to track archival-tagged swordfish, which revealed affinity for thermal front and eddy habitats throughout the North Atlantic that was further corroborated by synthesizing these results with a fisheries-dependent conventional tag dataset. An additive modeling approach applied to longline catch-per-unit effort data further highlighted the biophysical interactions that characterize variability in swordfish catch. In the final chapter, I designed a synergistic analysis of high-resolution, 3D shark movements and satellite observations to quantify the influence of ... |
format |
Thesis |
author |
Braun, Camrin D. |
author_facet |
Braun, Camrin D. |
author_sort |
Braun, Camrin D. |
title |
Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean |
title_short |
Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean |
title_full |
Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean |
title_fullStr |
Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean |
title_full_unstemmed |
Movements and oceanographic associations of large pelagic fishes in the North Atlantic Ocean |
title_sort |
movements and oceanographic associations of large pelagic fishes in the north atlantic ocean |
publisher |
Massachusetts Institute of Technology and Woods Hole Oceanographic Institution |
publishDate |
2018 |
url |
https://hdl.handle.net/1912/10644 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
doi:10.1575/1912/10644 |
op_relation |
WHOI Theses https://hdl.handle.net/1912/10644 doi:10.1575/1912/10644 |
op_doi |
https://doi.org/10.1575/1912/10644 |
op_publisher_place |
Woods Hole, MA |
_version_ |
1766129251064479744 |