Aquascope Facts

Where does over-fertilization come from?

Nitrogens way to the sea
The dark arrows depict how the fertilizing nitrogen moves through the landscape. The lighter arrows depict how some of the fertilizing nitrogen is transformed into nitrogen gas. The nitrogen based fertilizer that is not transformed into gas is either taken up by plants or bound in the sediment and gradually reaches the sea.
Today there are more fertilizing elements in Swedish waters than there were 40 years ago. Between 1950 and 1985 the supply of nitrogen from human activities dubbled, but this trend has now been broken and the input is decreasing. This reduction however, has not been large enough to reach the goal of half of the 1985 input.
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A splendid outing ?
Problems and expectations
”It was better before"
Seawater and soluble salts
The sea moves
Coastal waters are close to us
What is eutrofication?
Sources of over-fertilization
How the open masses of water are effected
How shallow bays are effected
What can we do?
Alga harvest

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Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson