Algae and diatoms

We all know that increased amounts of filamentous and blue green algae mean eutrophication. This much is clear. All kinds of algae grow much faster than vascular plants and because of that, algae can make use of the excess amounts of nutrients available during the growth season. Algae are tough competitors because they are such … Continue reading Algae and diatoms


How we do it: diving

Diving is one of our three main methods for collecting biological data from the Bothnian Bay. The other two are drop-videos and wading. See how we do it! Photos & videos by Metsähallitus. Editing by Suvi Saarnio with FilmoraGO. When we want species data from deeper than 1 meter we do a 100 m … Continue reading How we do it: diving

People behind the scenes: Merja Lipponen

I work as a senior adviser in the Centre for economic development, transport and environment of Lapland (ELY-centre of Lapland). I’m an ecologist by training, and like ecologists usually, I’ve found myself working in the most varied environments from southern Finland up to North. During the last years I’ve done research and surveys in boreal … Continue reading People behind the scenes: Merja Lipponen

Modelling anthropogenic pressures

Human impact modelling typically seeks to assess how strong the cumulative impact (Fig. 1.) of anthropogenic ecological stressors is on the ecosystem, i.e. where nature is experiencing stress due to human activities. Impact modelling might in some cases assess the impact of only one specific stressor or activity; in other cases the ecosystem and its … Continue reading Modelling anthropogenic pressures

Water soldier, Stratiotes aloides

Water soldier, or water pineapple, is a weird relict species of aquatic plant in Finland and in Sweden. The English name is easy to understand from the appearance of the species. It looks like a pineapple, and its leaves are sharply serrated like soldiers’ swords. Photo by Manuel Deinhardt, Metsähallitus. It was left here in … Continue reading Water soldier, Stratiotes aloides

Empowering the stakeholders

What do you get when you give paints, sticks and canvases to a bunch of SEAmBOTH stakeholders and tell them to drip, drop, slam, splatter and splurge us a better and a healthier Bothnian Bay? You get a triptyck of three individual, yet still connected paintings with beautifully balanced colors and patterns, that look like … Continue reading Empowering the stakeholders

Fresh water species in the Bothnian Bay

Some species of vascular plants and other macrophytes (the plants, water mosses and algae that we can see) are adapted to marine water. This means, that the lower salinity level will limit their distribution. They also have a maximum salinity level where the environmental stress from the salty water will get too high and they … Continue reading Fresh water species in the Bothnian Bay