Arctic Charr fishery management Catch and release in Eyjafjarðará, Iceland Erlendur Steinar Friðriksson Elli Steinar Based on Magister Scientiarum degree thesis in Natural Resource Sciences 2008-2014 By Erlendur Steinar Friðriksson Supervisors PhD Kristinn Pétur Magnússon Guðmundur Kristján Óskarsson School of Business and Science, Faculty of Natural Resource Sciences University of Akureyri 8TH INTERNATIONAL CHARR SYMPOSIUM 14 -18 JUNE 2015 TROMSØ, NORWAY
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Arctic Charr fishery management Catch and release in Eyjafjarðará, Iceland
Erlendur Steinar Friðriksson
Elli Steinar
Based on Magister Scientiarum degree thesis in Natural Resource Sciences
2008-2014By Erlendur Steinar Friðriksson
SupervisorsPhD Kristinn Pétur MagnússonGuðmundur Kristján Óskarsson
School of Business and Science, Faculty of Natural Resource Sciences
• Find out why the stocks af charr are declining• Remove fishing mortality out of the equation
• The goal of catch and release (C&R) as fishery management method is to reduce mortality due to fishing by releasing cought fish, alive back to the water
• The method has been applied for many years with a decent performance in a variety of sport fish species, including salmon and trout
• 2008 - Fishing management changed to C&R – tributaries closed for fishing
• Little documentation, however, was found for C&R beeing used for the charr fishery management
• So there was also a need for research on the effects of C&R
Unstable systemLarge catchment areaRunoff, glacier and springfedCold, 0-12°CNot fertile <25 S/cmAverage run sep-apr 25 m3/sFloods, mai-juli 100 m3/sMelting snow from heavy snow areaPassable for fish 60 kmTributaries passable for fish 24 km, some very good for spawning and nursing grounds
Anchor tag, Floy tag or T-bar anchor tags. Each tag has an ID-number, => each tagged fish has an ID Directorate of Fisheries allocates themAll icelandic fish-tags: IS-xxxxxx