Models of phosphorus turn-over in a hypertrophic lake: the Lake Swarzędzkie case study

• Autorzy: Gołdyn R. , Kowalczewska-Madura K.
• Języki publikacji: EN

Abstrakty

EN

Phosphorus cycling between components of the ecosystem of the hypertrophic Lake Swarzędzkie was studied in 2000-2003. The results of this study revealed considerable seasonal variation in phosphorus cycling. The main sources of phosphorus load in winter were the tributaries, whereas in summer internal loading prevailed. However, the most effective source of SRP (soluble reactive phosphorus) for phytoplankton primary production in summer was its excretion by organisms from the microbial loop. The share of this source in the total phosphorus pool was 38%, whereas internal loading contributed 23.7%, external loading 16.3%, and regeneration by metazooplankton 22%. This exerted a significant influence on the functioning of the whole lake ecosystem. Limiting both external and internal phosphorus loading is recommended to facilitate water quality improvement in the lake.

Słowa kluczowe

EN

phosphorus budget; hypertrophy; zooplankton excretion; external and internal loading

• Wydawca: Institute of Oceanography University of Gdańsk
• Czasopismo: Oceanological and Hydrobiological Studies
• Rocznik: 2010
• Tom: Vol. 39, No.3
• Strony: 21--33
• Opis fizyczny: bibliogr. 45 poz., tab., wykr.

Twórcy

autor

Gołdyn R.

autor

Kowalczewska-Madura K.

• Department of Water Protection, Faculty of Biology Adam Mickiewicz University ul. Umultowska 89, 61-614 Poznań, Poland,

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