Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA
International audience Whale populations recovering from historical whaling are particularly vulnerable to incidental mortality and disturbance caused by growing ocean industrialization. Several distinct populations of rorqual whales (including humpback, blue, and fin whales) migrate and feed off th...
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Language: | English |
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Online Access: | https://hal.science/hal-04398394 https://hal.science/hal-04398394/document https://hal.science/hal-04398394/file/Derville_et_al_2022_frontiers_preprint_accepted.pdf https://doi.org/10.3389/fmars.2022.868566 |
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ftccsdartic:oai:HAL:hal-04398394v1 2024-02-11T10:02:35+01:00 Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA Derville, Solène Barlow, D, R Hayslip, C. Torres, L, G Oregon State University (OSU) 2022-05-16 https://hal.science/hal-04398394 https://hal.science/hal-04398394/document https://hal.science/hal-04398394/file/Derville_et_al_2022_frontiers_preprint_accepted.pdf https://doi.org/10.3389/fmars.2022.868566 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2022.868566 hal-04398394 https://hal.science/hal-04398394 https://hal.science/hal-04398394/document https://hal.science/hal-04398394/file/Derville_et_al_2022_frontiers_preprint_accepted.pdf doi:10.3389/fmars.2022.868566 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-04398394 Frontiers in Marine Science, 2022, 9, ⟨10.3389/fmars.2022.868566⟩ species distribution model phenology prediction spatial management humpback whale blue whale fin whale Oregon [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.3389/fmars.2022.868566 2024-01-20T23:38:35Z International audience Whale populations recovering from historical whaling are particularly vulnerable to incidental mortality and disturbance caused by growing ocean industrialization. Several distinct populations of rorqual whales (including humpback, blue, and fin whales) migrate and feed off the coast of Oregon, USA where spatial overlap with human activities are on the rise. Effective mitigation of conflicts requires better foundational understanding of spatial and temporal habitat use patterns to inform conservation management. Based on a year-round, multi-platform distance sampling dataset (2016-2021, 177 survey days, 754 groups observed), this study generated density models to describe and predict seasonal distribution of rorqual whales in Oregon. Phenology analysis of sightings revealed a peak of humpback whale and blue whale density over the Oregon continental shelf in August and September respectively, and higher fin whale density in the winter (December). Additionally, we compared rorqual sighting rates across three decades of survey effort (since 1989) and demonstrate that rorqual whales are strikingly more prevalent in the current dataset, including distinct increases of blue and fin whales. Finally, density surface models relating whale densities to static and dynamic environmental variables acquired from data-assimilative ocean models revealed that summer and spring rorqual distribution were influenced by dynamic oceanographic features indicative of active upwelling and frontal zones (respectively 27% and 40% deviance explained). On the continental shelf, blue whales were predicted to occur closer to shore than humpback whales and in the more southern waters off Oregon. Summer and spring rorqual models, and humpback whale models, showed predictive performance suitable for management purposes, assessed through internal cross-validation and comparison to an external dataset (388 groups observed). Indeed, monthly hotspots of high predicted rorqual whale density across multiple years were ... Article in Journal/Newspaper Blue whale Fin whale Humpback Whale Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Rorqual ENVELOPE(-62.311,-62.311,-65.648,-65.648) Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
species distribution model phenology prediction spatial management humpback whale blue whale fin whale Oregon [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
species distribution model phenology prediction spatial management humpback whale blue whale fin whale Oregon [SDE.BE]Environmental Sciences/Biodiversity and Ecology Derville, Solène Barlow, D, R Hayslip, C. Torres, L, G Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA |
topic_facet |
species distribution model phenology prediction spatial management humpback whale blue whale fin whale Oregon [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Whale populations recovering from historical whaling are particularly vulnerable to incidental mortality and disturbance caused by growing ocean industrialization. Several distinct populations of rorqual whales (including humpback, blue, and fin whales) migrate and feed off the coast of Oregon, USA where spatial overlap with human activities are on the rise. Effective mitigation of conflicts requires better foundational understanding of spatial and temporal habitat use patterns to inform conservation management. Based on a year-round, multi-platform distance sampling dataset (2016-2021, 177 survey days, 754 groups observed), this study generated density models to describe and predict seasonal distribution of rorqual whales in Oregon. Phenology analysis of sightings revealed a peak of humpback whale and blue whale density over the Oregon continental shelf in August and September respectively, and higher fin whale density in the winter (December). Additionally, we compared rorqual sighting rates across three decades of survey effort (since 1989) and demonstrate that rorqual whales are strikingly more prevalent in the current dataset, including distinct increases of blue and fin whales. Finally, density surface models relating whale densities to static and dynamic environmental variables acquired from data-assimilative ocean models revealed that summer and spring rorqual distribution were influenced by dynamic oceanographic features indicative of active upwelling and frontal zones (respectively 27% and 40% deviance explained). On the continental shelf, blue whales were predicted to occur closer to shore than humpback whales and in the more southern waters off Oregon. Summer and spring rorqual models, and humpback whale models, showed predictive performance suitable for management purposes, assessed through internal cross-validation and comparison to an external dataset (388 groups observed). Indeed, monthly hotspots of high predicted rorqual whale density across multiple years were ... |
author2 |
Oregon State University (OSU) |
format |
Article in Journal/Newspaper |
author |
Derville, Solène Barlow, D, R Hayslip, C. Torres, L, G |
author_facet |
Derville, Solène Barlow, D, R Hayslip, C. Torres, L, G |
author_sort |
Derville, Solène |
title |
Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA |
title_short |
Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA |
title_full |
Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA |
title_fullStr |
Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA |
title_full_unstemmed |
Seasonal, Annual, and Decadal Distribution of Three Rorqual Whale Species Relative to Dynamic Ocean Conditions Off Oregon, USA |
title_sort |
seasonal, annual, and decadal distribution of three rorqual whale species relative to dynamic ocean conditions off oregon, usa |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04398394 https://hal.science/hal-04398394/document https://hal.science/hal-04398394/file/Derville_et_al_2022_frontiers_preprint_accepted.pdf https://doi.org/10.3389/fmars.2022.868566 |
long_lat |
ENVELOPE(-62.311,-62.311,-65.648,-65.648) |
geographic |
Rorqual |
geographic_facet |
Rorqual |
genre |
Blue whale Fin whale Humpback Whale |
genre_facet |
Blue whale Fin whale Humpback Whale |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-04398394 Frontiers in Marine Science, 2022, 9, ⟨10.3389/fmars.2022.868566⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2022.868566 hal-04398394 https://hal.science/hal-04398394 https://hal.science/hal-04398394/document https://hal.science/hal-04398394/file/Derville_et_al_2022_frontiers_preprint_accepted.pdf doi:10.3389/fmars.2022.868566 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2022.868566 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1790598612168736768 |