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OTN Frobisher Bay, Canada - Tag Release Metadata
Version 1 In OBIS Canada Digital Collections. Bedford Institute of Oceanography, Dartmouth, NS, Canada. Published by OBIS, Digital Accessed on -INSERT DATE.
Contact: Ocean Tracking Network (OTN), more

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Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

This study described the marine migration distribution, movements, diet, mortality and duration of anadromous Arctic char relative to migration temporal phase and environmental conditions (salinity, temperature and prey availability, tides) in inner Frobisher Bay (63o N 68o W), a macrotidal estuary on southeastern Baffin Island, Nunavut, Canada. Of the 33 char acoustically tracked in 2009, 15 (45%) ventured beyond 10 km of either of the Armshow or Sylvia Grinnell river mouths and 9 (27%) were detected in both rivers’ estuaries. Marine mortality was estimated at 24.2% with 62.5% of the mortalities occurring within the Sylvia Grinnell River estuary. more

Assuming an emigration date of June 18th in both 2008 and 2009, marine migration duration was 46 to 78 days. Mean durations were 59±6 in 2008, 65±7 in 2009 and 63±7 days combined. Tracking revealed migrant movements into the intertidal zone with the flood and ebb of the tide. Most detections were in surface waters (0 to 3 m). Inter/sub-tidal movements and consecutive repetitive dives (maximum 52.8 m) resulted in extreme body temperature shifts (-0.2 to18.1oC). Approximately half of intertidal and subtidal detections were between 9 to13oC, and 1 to 3oC, respectively. Stomach contents and deep diving suggested feeding in both inter/sub-tidal zones. We suggest that char tolerate cold water at depth to capture prey in the subtidal zone, then seek warmer water to enhance feeding/digestion physiology.

Biology > Fish
Marine/Coastal, ANW, Canada, Northwest Terr., Baffin I., Frobisher, Salvelinus alpinus (Linnaeus, 1758)

Geographical coverage
ANW, Canada, Northwest Terr., Baffin I., Frobisher [Marine Regions]

Temporal coverage
21 July 2008 - 7 July 2009

Taxonomic coverage
Salvelinus alpinus (Linnaeus, 1758) [WoRMS]

Occurrence of biota

Acadia University, moredata creator
Dalhousie University; Ocean Tracking Network (OTN), more

Related datasets
Published in:
OBIS-Canada: Canadian Ocean Biodiversity Information System, more

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2015-08-06
Information last updated: 2015-08-06
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy