Journal
PROGRESS IN OCEANOGRAPHY
Volume 189, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pocean.2020.102453
Keywords
Subsurface; Temperature; Autonomous sampling; Pinniped; Continental shelf oceanography
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Funding
- Research Network Grant by the Ocean Tracking Network from the Natural Sciences and Engineering Research Council (NSERC) of Canada [NETGP 375118-08]
- Canadian Foundation for Innovation [30200]
- NSERC Discovery Grants
- Department of Fisheries and Oceans, Canada
- Nova Scotia Graduate Scholarship
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Obtaining high resolution data on the physical and biological conditions in marine ecosystems is needed to better understand the impacts of environmental variability. The instrumentation of deep-diving, large marine predators has proven useful in sampling these conditions below the surface at fine spatio-temporal scales that would otherwise be extremely challenging. Data were retrieved from 94 grey seals (Halichoerus grypus; 25 males, 69 females) instrumented with Mk10-AF FastlocTM GPS devices on Sable Island, Nova Scotia, Canada between 2009 and 2015. These devices were programmed to record high resolution location data every 15 min as well as depth (m), temperature (degrees C), and light level every 10 s during dives. Oceanographic data from 595,866 dive profiles were used to estimate mixed layer depth, sea-surface temperature, upper-water column temperature, and chlorophyll-a concentration. Sampling covered about 70% of the Scotian Shelf, with a monthly average of about 26%. These data allow for monitoring of areas that are ecologically important and serve to complement other methods of oceanographic sampling.
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