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A Tweed Fisheries Biologist’s Week – Monday 12th December

Monday 12th December: Meeting in the morning on the Tweed Biosecurity plan, then in the afternoon down to Berwick and on the train to London.

Tuesday 13th December: At the AST’s “Ocean Silver” salmon summit, in the Livery Hall of the Fishmongers’ Company. The purpose of this meeting was to present the results of the SALSEA -MERGE programme’s research to a more general audience and all very interesting. What intrigued me most was the work on the relationships between Herring and Mackerel stocks off the northern coast of Norway and the success and behaviour of Salmon, for which it is a major post-Smolt / Grilse feeding area. Cycles of about 60 years are apparent in these Herring and Mackerel, related to a major ocean climate cycle, and it looks as if these then underlie cycles in the Salmon. When feeding is not good in this area, Grilse numbers fall and Salmon numbers increase as the fish spend longer at sea. Spoke to the Norwegian scientist who gave this presentation afterwards and will see how long-term Tweed data matches up with this. Did my own short presentation in the afternoon, on what all this new knowledge means to a local fishery biologist & then back up to Berwick.

Wednesday 14th December: In the office all day catching up on e-mails and preparing for tomorrow’s meeting on stock analyses.

Thursday 15th December: Up to Edinburgh in the afternoon for the meeting on stock analysis.

Friday 16th December: Office all day, sorting out trap data and begining analysis: Why would 88 Grayling fry go up a small burn in just two days? We’ve seen this before at other trap sites & in other years. , but never so many, they must have gone up shoals.

THIS BLOG WILL NOW TAKE ITS USUAL WINTER BREAK – BACK IN THE SPRING WHEN THERE’S ACTION TO REPORT.