DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf
The ecological impact of environmental changes at high latitudes (e.g., increasing temperature, and decreased sea ice cover) on low-trophic species, such as bowhead whales, are poorly understood. Key to understanding the vulnerability of zooplanktivorous predators to climatic shifts in prey is knowi...
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ftfrontimediafig:oai:figshare.com:article/21938933 2024-09-15T17:57:12+00:00 DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf Sarah M. E. Fortune Andrew W. Trites Valerie LeMay Mark F. Baumgartner Steven H. Ferguson 2023-01-23T04:20:18Z https://doi.org/10.3389/fmars.2022.853525.s001 https://figshare.com/articles/dataset/DataSheet_1_Year-round_foraging_across_large_spatial_scales_suggest_that_bowhead_whales_have_the_potential_to_adapt_to_climate_change_pdf/21938933 unknown doi:10.3389/fmars.2022.853525.s001 https://figshare.com/articles/dataset/DataSheet_1_Year-round_foraging_across_large_spatial_scales_suggest_that_bowhead_whales_have_the_potential_to_adapt_to_climate_change_pdf/21938933 CC BY 4.0 Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering state-space modelling satellite-telemetry time-depth recorder (TDR) Arctic behavioural flexibility zooplankton sea ice bathymetry Dataset 2023 ftfrontimediafig https://doi.org/10.3389/fmars.2022.853525.s001 2024-08-19T06:19:53Z The ecological impact of environmental changes at high latitudes (e.g., increasing temperature, and decreased sea ice cover) on low-trophic species, such as bowhead whales, are poorly understood. Key to understanding the vulnerability of zooplanktivorous predators to climatic shifts in prey is knowing whether they can make behavioural or distributional adjustments to maintain sufficient prey acquisition rates. However, little is known about how foraging behaviour and associated environmental conditions fluctuate over space and time. We collected long-term movement (average satellite transmission days were 397 (± 204 SD) in 2012 and 484 (± 245 SD) in 2013) and dive behaviour data for 25 bowhead whales (Balaena mysticetus) equipped with time-depth telemetry tags, and used hierarchical switching-state-space models to quantify their movements and behaviours (resident and transit). We examined trends in inferred two-dimensional foraging behaviours based on dive shape of Eastern Canada-West Greenland bowhead whales in relation to season and sea ice, as well as animal sex and age via size. We found no differences with regards to whale sex and size, but we did find evidence that subsurface foraging occurs year-round, with peak foraging occurring in fall (7.3 hrs d -1 ± 5.70 SD; October) and reduced feeding during spring (2.7 hrs d -1 ± 2.55 SD; May). Although sea ice cover is lowest during summer foraging, whales selected areas with 65% (± 36.1 SD) sea ice cover. During winter, bowheads occurred in areas with 90% (± 15.5 SD) ice cover, providing some open water for breathing. The depth of probable foraging varied across seasons with animals conducting epipelagic foraging dives (< 200 m) during spring and summer, and deeper mesopelagic dives (> 400 m) during fall and winter that approached the sea bottom, following the seasonal vertical migration of lipid-rich zooplankton. Our findings suggest that, compared to related species (e.g., right whales), bowheads forage at relatively low rates and over a large geographic ... Dataset Balaena mysticetus Greenland Sea ice Zooplankton Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering state-space modelling satellite-telemetry time-depth recorder (TDR) Arctic behavioural flexibility zooplankton sea ice bathymetry |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering state-space modelling satellite-telemetry time-depth recorder (TDR) Arctic behavioural flexibility zooplankton sea ice bathymetry Sarah M. E. Fortune Andrew W. Trites Valerie LeMay Mark F. Baumgartner Steven H. Ferguson DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering state-space modelling satellite-telemetry time-depth recorder (TDR) Arctic behavioural flexibility zooplankton sea ice bathymetry |
description |
The ecological impact of environmental changes at high latitudes (e.g., increasing temperature, and decreased sea ice cover) on low-trophic species, such as bowhead whales, are poorly understood. Key to understanding the vulnerability of zooplanktivorous predators to climatic shifts in prey is knowing whether they can make behavioural or distributional adjustments to maintain sufficient prey acquisition rates. However, little is known about how foraging behaviour and associated environmental conditions fluctuate over space and time. We collected long-term movement (average satellite transmission days were 397 (± 204 SD) in 2012 and 484 (± 245 SD) in 2013) and dive behaviour data for 25 bowhead whales (Balaena mysticetus) equipped with time-depth telemetry tags, and used hierarchical switching-state-space models to quantify their movements and behaviours (resident and transit). We examined trends in inferred two-dimensional foraging behaviours based on dive shape of Eastern Canada-West Greenland bowhead whales in relation to season and sea ice, as well as animal sex and age via size. We found no differences with regards to whale sex and size, but we did find evidence that subsurface foraging occurs year-round, with peak foraging occurring in fall (7.3 hrs d -1 ± 5.70 SD; October) and reduced feeding during spring (2.7 hrs d -1 ± 2.55 SD; May). Although sea ice cover is lowest during summer foraging, whales selected areas with 65% (± 36.1 SD) sea ice cover. During winter, bowheads occurred in areas with 90% (± 15.5 SD) ice cover, providing some open water for breathing. The depth of probable foraging varied across seasons with animals conducting epipelagic foraging dives (< 200 m) during spring and summer, and deeper mesopelagic dives (> 400 m) during fall and winter that approached the sea bottom, following the seasonal vertical migration of lipid-rich zooplankton. Our findings suggest that, compared to related species (e.g., right whales), bowheads forage at relatively low rates and over a large geographic ... |
format |
Dataset |
author |
Sarah M. E. Fortune Andrew W. Trites Valerie LeMay Mark F. Baumgartner Steven H. Ferguson |
author_facet |
Sarah M. E. Fortune Andrew W. Trites Valerie LeMay Mark F. Baumgartner Steven H. Ferguson |
author_sort |
Sarah M. E. Fortune |
title |
DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
title_short |
DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
title_full |
DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
title_fullStr |
DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
title_full_unstemmed |
DataSheet_1_Year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
title_sort |
datasheet_1_year-round foraging across large spatial scales suggest that bowhead whales have the potential to adapt to climate change.pdf |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2022.853525.s001 https://figshare.com/articles/dataset/DataSheet_1_Year-round_foraging_across_large_spatial_scales_suggest_that_bowhead_whales_have_the_potential_to_adapt_to_climate_change_pdf/21938933 |
genre |
Balaena mysticetus Greenland Sea ice Zooplankton |
genre_facet |
Balaena mysticetus Greenland Sea ice Zooplankton |
op_relation |
doi:10.3389/fmars.2022.853525.s001 https://figshare.com/articles/dataset/DataSheet_1_Year-round_foraging_across_large_spatial_scales_suggest_that_bowhead_whales_have_the_potential_to_adapt_to_climate_change_pdf/21938933 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fmars.2022.853525.s001 |
_version_ |
1810433367032725504 |