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Contact me at kbir@aqua.dtu.dk or via twitter

RESEARCH & PROJECTS

Scandinavian Bluefin Marathon

August 2017 to present

Atlantic bluefin tuna used to rule the Skagerrak-Kattegat area between Denmark and Sweden until the 1960s. After an absence of more than 50 years, the bluefins have now returned to the area, first spotted in 2014. Beginning in 2017, DTU Aqua has led a tagging project using recreational anglers to catch and safely land Atlantic bluefin tunas. The tunas are then tagged with and electronic tag (including pop-up satellite archival tags, acoustic tags and accelerometer tags), measured and sampled, and than safely released back into the water.

By tagging the fish and tracking them along their migrations, we hope to gain information on where the fish are from, where they go, the habitats they use and gain a better understand of why the stock has returned after so many decades away. While there is speculation that climate change has had a role, it's more likely that better management of the Atlantic bluefin tuna populations as well as the populations of prey species has led to a re-expansion of their range. 

I've been lucky enough to have been part of Scandinavian Bluefin Marathon's tagging team since its beginning. 

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The physiological basis of migration in salmonids

September 2015 to present

Salmonids exhibit a great deal of variation in their migratory behaviour - how far they go at sea, how long they stay at sea, the timing of their migration and whether they are successful or not - but we know very little about the proximate and ultimate causes leading to this variation.

To provide a better understanding of the mechanisms underlying differences in migratory behaviour, we are investigating the link between physiological indices and behaviour by combining non-lethal blood samples and telemetry.

Resident brown trout from river Binderup, Denmark

AMBER - Adaptive Management of Barriers in European Rivers

December 2016 to present

 

Improving stream connectivity has been flagged as one of the priorities for more effective stream restoration. And one of the major challenges to overcome to achieve 'good status' under the Water Framework Directive (WFD) is the fragmentation of stream habitats. This fragmentation is mainly caused by tens of thousands of man-made barriers, many of which are old and no longer in use.

This project seeks to apply adaptive management to the operation of dams and barriers in European rivers to achieve a more efficient restoration of stream connectivity and address impacts caused by river fragmentation.

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