Aquascope Facts
Cows having a pee
Grazing stock help to keep the landscape open and promote bird life. Because the soil is covered by grass, nutrients are constantly taken up and finally consumed by grazing stock so that the burden on the sea is less.
The animal production of urea and urine is between twice and ten times that of the human production and for every year that passes it becames more and more difficult finding arable land to spread it on. Plants can only utilize a certain amount of these nutrients and if a surplus occurs it will dissappear up into the atmosphere as ammonia or leak out into the rivers in the form of nitrates - and eventually out to the sea.
    To increase agricultural production, arable land is often enriched with artificial fertilizers. Fertilizers usually contain different forms of ions of nitrogen (N), phosphorous (P) and potassium (K). (Compare with the ingredients in a packet of flower fertilizer.) If agriculturalists use excessive amounts of fertilizer, environmental problems can arise. Nitrogen is washed out of the soil relatively quickly and eventually ends up in the ground water or rivers. Phosphorous is not washed out as quickly as it has a tendency to bind itself to the sediments in the soil, but some of it is washed out and eventually ends up in the sea.
    In todays modern farming, farmers often specialize to one major crop. This usually results in large areas lying fallow during the winter without any crops taking up the nutrients from the soil. Nitrogen simply leaks out.
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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