The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
Loss of spawning habitat and prerecruits of Pacific cod during a Gulf of Alaska heatwave
-
2020
-
Source: Canadian Journal of Fisheries and Aquatic Sciences, 77(4), 644-650
[PDF-5.53 MB]
Details:
-
Journal Title:Canadian Journal of Fisheries and Aquatic Sciences
-
Personal Author:
-
NOAA Program & Office:
-
Description:Pacific cod (Gadus macrocephalus) stocks in the Gulf of Alaska experienced steep, unexpected declines following an unprecedented 3-year marine heatwave (i.e., “warm blob”) from 2014 to 2016. We contend that stock reproductive potential was reduced during this period, evidenced by a combination of new laboratory data demonstrating narrow thermal hatch success (3–6 °C), mechanistic-based models of spawning habitat, and correlations with prerecruit time series. With the exception of single-year El Niño events (1998, 2003), the recent 3-year heatwave (2014–2016) and return to similar conditions in 2019 were potentially the most negative impacts on spawning habitat for Pacific cod in the available time series (1994–2019). Continued warming will likely reduce the duration and spatial extent of Pacific cod spawning in the Gulf of Alaska.
-
Keywords:
-
Source:Canadian Journal of Fisheries and Aquatic Sciences, 77(4), 644-650
-
DOI:
-
Document Type:
-
Place as Subject:
-
Rights Information:Other
-
Compliance:Submitted
-
Main Document Checksum:
-
Download URL:
-
File Type:
