The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome
Following a heat dome event in late June- early July 2021, mass shellfish mortalities were reported in Washington State. It is important to study this mortality event given the economic and ecological value of shellfish, particularly in the context of climate change. We chose to contribute to this r...
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ftunivwashington:oai:digital.lib.washington.edu:1773/48641 2023-05-15T15:57:39+02:00 The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome Miller, Brittany 2022-05 http://hdl.handle.net/1773/48641 unknown FHL 470; http://hdl.handle.net/1773/48641 Crassostrea gigas heat dome 2022 ftunivwashington 2023-03-12T19:01:33Z Following a heat dome event in late June- early July 2021, mass shellfish mortalities were reported in Washington State. It is important to study this mortality event given the economic and ecological value of shellfish, particularly in the context of climate change. We chose to contribute to this research by surveying Crassostrea gigas in San Juan Island, Washington, to estimate percent mortality and to investigate a relationship between size and survival following the heat dome. We surveyed four sites on San Juan Island, sampling 70 at each. We recorded whether each individual was living or recently dead, and measured total shell length. We compiled the data and generated a logistic regression to model the relationship between size and survival, and calculated percent mortality between the 4 sites and overall. We found a positive association between greater length (cm) and predicted probability of the individual being alive. We calculated an overall percent mortality of 8.57%, which is consistent with other estimates following the heat dome. While these data suggest that the heat dome was a major contributor to the observed shellfish mortality in Washington State, investigations into other potential factors characteristic of “summer mortalities” would contribute to a broader understanding of these events. Other/Unknown Material Crassostrea gigas University of Washington, Seattle: ResearchWorks Pacific San Juan |
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University of Washington, Seattle: ResearchWorks |
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ftunivwashington |
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unknown |
topic |
Crassostrea gigas heat dome |
spellingShingle |
Crassostrea gigas heat dome Miller, Brittany The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome |
topic_facet |
Crassostrea gigas heat dome |
description |
Following a heat dome event in late June- early July 2021, mass shellfish mortalities were reported in Washington State. It is important to study this mortality event given the economic and ecological value of shellfish, particularly in the context of climate change. We chose to contribute to this research by surveying Crassostrea gigas in San Juan Island, Washington, to estimate percent mortality and to investigate a relationship between size and survival following the heat dome. We surveyed four sites on San Juan Island, sampling 70 at each. We recorded whether each individual was living or recently dead, and measured total shell length. We compiled the data and generated a logistic regression to model the relationship between size and survival, and calculated percent mortality between the 4 sites and overall. We found a positive association between greater length (cm) and predicted probability of the individual being alive. We calculated an overall percent mortality of 8.57%, which is consistent with other estimates following the heat dome. While these data suggest that the heat dome was a major contributor to the observed shellfish mortality in Washington State, investigations into other potential factors characteristic of “summer mortalities” would contribute to a broader understanding of these events. |
author |
Miller, Brittany |
author_facet |
Miller, Brittany |
author_sort |
Miller, Brittany |
title |
The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome |
title_short |
The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome |
title_full |
The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome |
title_fullStr |
The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome |
title_full_unstemmed |
The effect of Crassostrea gigas size on survival following Pacific Northwest heat dome |
title_sort |
effect of crassostrea gigas size on survival following pacific northwest heat dome |
publishDate |
2022 |
url |
http://hdl.handle.net/1773/48641 |
geographic |
Pacific San Juan |
geographic_facet |
Pacific San Juan |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
FHL 470; http://hdl.handle.net/1773/48641 |
_version_ |
1766393323264671744 |