| SYSNO ASEP | 0150553
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| Document Type | J - Journal Article
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| R&D Document Type | Journal Article
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| Subsidiary J | Ostatní články
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| Title | Mass balance of nutrients and major solutes in the Plešné watershed-lake ecosystem in the 2001 hydrological year
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| Author(s) | Kopáček, Jiří (HBU-Z)
Brzáková, Martina (HBU-Z)
Hejzlar, Josef (HBU-Z)
Kaňa, Jiří (HBU-Z)
Porcal, Petr (HBU-Z)
Vrba, Jaroslav (HBU-Z)
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| Source Title | Silva Gabreta. - : Správa Národního parku a Chráněné krajinné oblasti Šumava
- ISSN 1211-7420
Roč. 9, - (2003), s. 33-52
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| Number of pages | 20 s.
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| Language | eng - English
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| Country | CZ - Czech Republic
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| Keywords | Bohemian Forest ; water chemistry
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| Subject RIV | DA - Hydrology ; Limnology
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| R&D Projects | GA206/00/0063 GA ČR - Czech Science Foundation (CSF)
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| GA206/03/1583 GA ČR - Czech Science Foundation (CSF)
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| CEZ | AV0Z6017912 - HBU-Z, BC-A
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| Annotation | Fluxes of major ions and nutrients were evaluated in Plešné Lake and its watershed in the 2001 hydrological year. The net terrestrial proton production (15 keq/yr) resulted predominantly from net sulfate and nitrate release from soils, and ammonia assimilation. The net in-lake proton consumption (22 keq/yr) resulted mostly from reduction in nitrate (55%), organic acid anions (24%), and sulfate (13%). The external inputs of total organic C, total N, total P, and dissolved Si were 6520, 908, 19.9, and 3158 kg/yr and their net in-lake removals were 10%, 24%, 54%, and 28%, respectively. Sedimentation fluxes of C, N, and P from the epilimnion were 1990, 211, and 8.9 kg/yr, and their average accumulations in the sediments were 1585, 151, and 13.4 kg/yr respectively. The absence of nitrification due to long-lasting water acidification led to a situation in which the lake became a net source of ammonium-N (78 kg/yr).
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| Workplace | Institute of Hydrobiology (until 2005)
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| Contact | Václava Lavičková, lavickova@hbu.cas.cz, Tel.: 387 775 889
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| Year of Publishing | 2004
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