Update March 31: we’re still adding data sets. . . stay tuned for more.
- GREENLAND SHARK
- ARCTIC SKATE
- GREENLAND HALIBUT
- RINGED SEAL
Cumberland Sound, on southern Baffin Island, supports a wide variety and number of arctic fish, seabird and marine mammal species and a community of 1,400 people (Pangnirtung, Nunavut). Significant changes have occurred in the Cumberland Sound ecosystem in the recent past, which are likely due to climatic changes. Ice condition is the most obvious change as the duration of ice cover and the extent of land-fast ice have been reduced. These changes in arctic ice cover will likely have serious impacts on the trophic interactions and movements of arctic species. This project targeted the spatial, seasonal and temporal interaction of fish and marine mammals in the Cumberland Sound ecosystem, by overlying the spatial and temporal movements of key fish and marine mammal species using a combination of satellite tags, acoustic (V6) and chat tags, and an array of VR2W receivers in the Sound.
Download all Cumberland Sound species’ detections:
Over a century of research has failed to document a single adult American eel in the open ocean. Their journey is precarious: shark predation and commercial harvests that can fetch up to $2,000 per pound are just some of the hazards they face before reaching open ocean. The OTN American eel project released adult eels fitted with satellite or acoustic tags into the St. Lawrence River and tracked them into the Atlantic Ocean.
Read more on this project
Download American eel detections (acoustic):
This study monitors the habitat use, movements, and survival of blue sharks (Prionace glauca). Acoustic tags surgically implanted in the animals will provide long-term spatial resolution of shark movements and distribution, trans-boundary migrations, site fidelity, and the species’ response to a changing ocean. Long-term monitoring of this understudied predator in the northwest Atlantic will also provide basic and necessary information to better inform fisheries managers and policy makers.
Read more on this project
Download blue shark detections:
This study aims to better understand the ecological function of large marine carnivores (grey seals) in continental-shelf ecosystems. There are two components: 1) spatial and temporal patterns of prey encounters by grey seals, and 2) predator movements and feeding behaviour in relation to fine- and mid-scale seasonal oceanography in eastern Canada.
Read more on this project:
Download grey seal detections:
GREY REEF SHARKS
In partnership with our OTN Data Partners at IMOS Animal Tracking, and with thanks to principal investigator Dr. Michelle Heupel, we’ve curated an IMOS Animal Tracking detection-set of Dr. Heupel’s tagged grey reef sharks (Carcharhinus amblyrhynchos) as they were spotted by the acoustic array deployed near Heron Island, Queensland, Australia
Due to their dependence on coral reef habitats conventional wisdom and short-term data suggest that reef sharks are highly resident to a single reef. This assumption is key to coral reef management strategies that often apply protection at the reef scale. This study was designed to determine whether grey reef sharks were long-term residents at a single reef and how they used the reef habitat. Individuals were fitted with depth sensing transmitters and monitored by an array of acoustic receivers ringing Heron, Sykes and One Tree reefs. This approach provided information on when and how long individuals were present, how much of the reef area they used and how they used the water column based on their depth preferences. These data are integral to management of the Great Barrier Reef and the species that live there.