Use of satellite data to identify critical periods for early life survival of northern shrimp in the Gulf of Maine
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All
i

Use of satellite data to identify critical periods for early life survival of northern shrimp in the Gulf of Maine

Filetype[PDF-1.28 MB]



Details:

  • Journal Title:
    Fisheries Oceanography
  • Description:
    The northern shrimp Pandalus borealis is at its southern limit in the Gulf of Maine (GOM), and recruitment success is higher in years with relatively cool water temperature. However, the mechanisms for the temperature effect are not clear. We used rolling window analysis of daily satellite data to identify critical periods for early life survival of the 1998-2012 northern shrimp year-classes and to investigate the importance of the phenology of the hatch and bloom. Survival was negatively correlated with sea surface temperature (SST) during a 6-week period around the time of larval emergence (late winter) and during a 4-week period in late summer when SST and stratification reached annual maxima. Survival was negatively correlated with chlorophyll-a concentration (chl-a) during two 5-week periods centered approximately a month before the hatch midpoint and around the time of settlement to the benthos. A small-magnitude winter bloom occurred around the time of the hatch in many years, but our results did not reveal a link between survival and bloom-hatch phenology. The timing of winter and spring blooms were correlated with SST during the preceding 10months. A survival model including SST and chl-a during the critical periods explained 73% of the variance in survival. Summer SST increased significantly during the study period; the other critical variables showed no trend. The rolling windows approach revealed sensitive periods in early life history that may not have otherwise been hypothesized, providing a foundation for research towards a greater understanding of processes affecting recruitment.
  • Source:
    Fisheries Oceanography, 25(3), 306-319.
  • Document Type:
  • Rights Information:
    Public Domain
  • Compliance:
    Submitted
  • Main Document Checksum:
  • File Type:

Supporting Files

  • No Additional Files

More +

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.17.1