Latvasilmu osk Ympäristöpalvelut worked this summer for Lapland and North Ostrobothnia ELY centres carrying out SEAmBOTH field surveys at Natura2000-reserves in Bothnian Bay area. I will remember this years field surveys in Bothnian Bay not from the endless heatwave but because of all the challenges that we had to conquer resulting from working in shallow … Continue reading Field stories: It’s not what you know, it’s how shallow you can go
GTK´s Marine Geology unit started SEAmBOTH-field work in early June. First R/V Geomari did acoustic-seismic soundings and then some sampling work in Kemi river estuary. Our smaller vessel Gridi started her work in early August, first in Kemi river estuary and then the Krunnit area. After a long transit from the south, work started from … Continue reading Field stories: Offshore again
10 days ago our research ship Ocean Surveyor left our previous project on a bank in the middle of the Baltic sea where we have been surveying geology and habitats since early summer. After a three-day transit we arrived to the northern most outpost of the Swedish marine waters, Haparanda in the Bothnian Bay. This … Continue reading SGU finally arriving at the scene for our first week of field work!
Rather quite shallow, especially around the archipelago of Haparanda and Torneå. In shallow waters like this, at a maximum depth of around one meter, the perfoliate pondweed (Potamogeton perfoliatus) and pond water-crowfoot (Ranunculus peltatus) reach up to the surface and create patches, sometimes impenetrable. We usually keep a look out for rocks whilst driving the … Continue reading Field stories: The sea is not always deep…
We've been making some new friends during our recent snorkel inventories. Sometimes they have even been giving us a manicure. Curiously they checked whether we were edible, nibbling on our skin. The fish are mainly juveniles of different species. A common one is for example roach (Rutilus rutilus). Photo by Kajsa Johansson, County Administrative Board … Continue reading Field stories: Making new friends
Most of the time our surveys of vegetation in the Bothnian Bay are planned, forseeable and follow a systematic routine. But some things you can only stumble upon, such as finding the sheated pondweed (Stuckenia vaginata). The sheated pondweed grows mainly in deeper areas but reaches its stem up to the surface. It is therefore … Continue reading Field stories: Stumbling upon the sheated pondweed
Spring is a truly busy time in the sea. When the ice cover melts in the Bothnian Bay it's time for the fish to spawn and lay their eggs in the shallow bays, creeks and lakes. The eggs can teach us a lot about the importance of coastal habitats and the lives of fish. Where … Continue reading Springtime means eggtime