Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific
Abstract The prevalence of disease-driven mass mortality events is increasing, but our understanding of spatial variation in their magnitude, timing, and triggers are often poorly resolved. Here, we use a novel range-wide dataset comprised of 48,810 surveys to quantify how Sea Star Wasting Disease a...
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ftborealisdata:doi:10.5683/SP3/NKMSSF 2023-05-15T16:17:06+02:00 Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific Hamilton, Sara Saccomanno, Vienna Heady, Walter Gehman, Alyssa-Lois Lonhart, Steve Beas-Luna, Rodrigo Francis, Fiona Lee, Lynn Rogers-Bennett, Laura Salomon, Anne Gravem, Sarah https://doi.org/10.5683/SP3/NKMSSF unknown Borealis https://doi.org/10.5683/SP3/NKMSSF Other ftborealisdata https://doi.org/10.5683/SP3/NKMSSF 2022-10-10T05:43:48Z Abstract The prevalence of disease-driven mass mortality events is increasing, but our understanding of spatial variation in their magnitude, timing, and triggers are often poorly resolved. Here, we use a novel range-wide dataset comprised of 48,810 surveys to quantify how Sea Star Wasting Disease affected Pycnopodia helianthoides , the sunflower sea star, across its range from Baja California, Mexico to the Aleutian Islands, USA. We found that the outbreak occurred more rapidly, killed a greater percentage of the population, and left fewer survivors in the southern half of the species’ range. Pycnopodia now appears to be functionally extinct (> 99.2% declines) from Baja California, Mexico to Cape Flattery, Washington, USA and exhibited severe declines (> 87.8%) from the Salish Sea to the Gulf of Alaska. The importance of temperature in predicting Pycnopodia distribution rose 450% after the outbreak, suggesting these latitudinal gradients may stem from an interaction between disease severity and warmer waters. We found no evidence of population recovery in the years since the outbreak. Natural recovery in the southern half of the range is unlikely over the short-term and assisted recovery will likely be required for recovery in the southern half of the range on ecologically-relevant time scales. Methods Thirty research groups from Canada, the United States, Mexico, including First Nations, shared 34 datasets containing field surveys of Pycnopodia (Table S1). The data included 48,810 surveys from 1967 to 2020 derived from trawls, remotely operated vehicles, SCUBA dives, and intertidal surveys. We compiled survey data into a standardized format that included at minimum the coordinates, date, depth, area surveyed, and occurrence of Pycnopodia for each survey. When datasets contained more than one survey at a site in the same day (e.g. multiple transects), we divided the total Pycnopodia count in all surveys by the total survey area and averaged the latitude, longitude, and depth as necessary. Using breaks ... Other/Unknown Material First Nations Alaska Aleutian Islands Borealis Baja Canada Gulf of Alaska Pacific |
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Other Hamilton, Sara Saccomanno, Vienna Heady, Walter Gehman, Alyssa-Lois Lonhart, Steve Beas-Luna, Rodrigo Francis, Fiona Lee, Lynn Rogers-Bennett, Laura Salomon, Anne Gravem, Sarah Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific |
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Other |
description |
Abstract The prevalence of disease-driven mass mortality events is increasing, but our understanding of spatial variation in their magnitude, timing, and triggers are often poorly resolved. Here, we use a novel range-wide dataset comprised of 48,810 surveys to quantify how Sea Star Wasting Disease affected Pycnopodia helianthoides , the sunflower sea star, across its range from Baja California, Mexico to the Aleutian Islands, USA. We found that the outbreak occurred more rapidly, killed a greater percentage of the population, and left fewer survivors in the southern half of the species’ range. Pycnopodia now appears to be functionally extinct (> 99.2% declines) from Baja California, Mexico to Cape Flattery, Washington, USA and exhibited severe declines (> 87.8%) from the Salish Sea to the Gulf of Alaska. The importance of temperature in predicting Pycnopodia distribution rose 450% after the outbreak, suggesting these latitudinal gradients may stem from an interaction between disease severity and warmer waters. We found no evidence of population recovery in the years since the outbreak. Natural recovery in the southern half of the range is unlikely over the short-term and assisted recovery will likely be required for recovery in the southern half of the range on ecologically-relevant time scales. Methods Thirty research groups from Canada, the United States, Mexico, including First Nations, shared 34 datasets containing field surveys of Pycnopodia (Table S1). The data included 48,810 surveys from 1967 to 2020 derived from trawls, remotely operated vehicles, SCUBA dives, and intertidal surveys. We compiled survey data into a standardized format that included at minimum the coordinates, date, depth, area surveyed, and occurrence of Pycnopodia for each survey. When datasets contained more than one survey at a site in the same day (e.g. multiple transects), we divided the total Pycnopodia count in all surveys by the total survey area and averaged the latitude, longitude, and depth as necessary. Using breaks ... |
author |
Hamilton, Sara Saccomanno, Vienna Heady, Walter Gehman, Alyssa-Lois Lonhart, Steve Beas-Luna, Rodrigo Francis, Fiona Lee, Lynn Rogers-Bennett, Laura Salomon, Anne Gravem, Sarah |
author_facet |
Hamilton, Sara Saccomanno, Vienna Heady, Walter Gehman, Alyssa-Lois Lonhart, Steve Beas-Luna, Rodrigo Francis, Fiona Lee, Lynn Rogers-Bennett, Laura Salomon, Anne Gravem, Sarah |
author_sort |
Hamilton, Sara |
title |
Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific |
title_short |
Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific |
title_full |
Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific |
title_fullStr |
Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific |
title_full_unstemmed |
Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific |
title_sort |
disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern pacific |
publisher |
Borealis |
url |
https://doi.org/10.5683/SP3/NKMSSF |
geographic |
Baja Canada Gulf of Alaska Pacific |
geographic_facet |
Baja Canada Gulf of Alaska Pacific |
genre |
First Nations Alaska Aleutian Islands |
genre_facet |
First Nations Alaska Aleutian Islands |
op_relation |
https://doi.org/10.5683/SP3/NKMSSF |
op_doi |
https://doi.org/10.5683/SP3/NKMSSF |
_version_ |
1766002952021999616 |