Phosphorus and Nitrogen in Three Lakes A study of the nutrient status in Lake Erken, Lake Limmaren and Lake Largen.

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Presentation transcript:

Phosphorus and Nitrogen in Three Lakes A study of the nutrient status in Lake Erken, Lake Limmaren and Lake Largen

Nitrogen Phosphorus N P

Internal and external loading of nutrinets Internal loading of nutrients from the sediment External loading of nutrients from inlets

Sampling Ekman grabber Ruttner sampler

Lake Erken Location of sediment, surface and bottom water sampling Location of inlet water sampling

Lake Limmaren Location of sediment, surface and bottom water sampling Location of inlet water sampling

Lake Largen Location of sediment, surface and bottom water sampling Location of inlet water sampling

Analyse of the samples Spectrophotometer

Total phosphorus and phosphate The total phosphorus and phosphate concentration in the lake water in the three lakes

Total nitrogen and nitrate and nitrite The total nitrogen and nitrate and nitrite concentration in the lake water in the three lakes

Lake Erken is a mesotrophic lake Lake Limmaren is an eutropic lake Lake Largen is an oligotrophic lake Conclution

Thanks for your attention!