Limnological survey of the warm monomictic lake Trichonis (central western Greece); I. The physical and chemical environment

The physical and chemical status of Trichonis - the largestanddeepest natural lake in Greece - is examined over two annualcycles (1985-86 and 1988-89). A correlation between lakenutrientpatterns and phytoplankton biomass is attempted. Limnologicalfeatures are compared with data from other warm and t...

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Bibliographic Details
Published in:Hydrobiologia 1997-01, Vol.344 (1-3), p.129-139
Main Authors: Tafas, T, Danielidis, D, Overbeck, J, Economou-amilli, A
Format: Article
Language:English
Subjects:
Biomass
Eutrophication
Freshwater
Geochemistry
Lakes
Limiting factors
Limnology
Mesotrophy
Nitrogen
Phytoplankton
Plankton
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Summary:The physical and chemical status of Trichonis - the largestanddeepest natural lake in Greece - is examined over two annualcycles (1985-86 and 1988-89). A correlation between lakenutrientpatterns and phytoplankton biomass is attempted. Limnologicalfeatures are compared with data from other warm and temperatelakes. With regard to its thermal regime, Trichonis is classified asawarm monomictic lake. The lake's stratification pattern andannualheat budget resemble those of other temperate lakes. Trichonisisa carbonate type, low conductivity lake ('class II, lowsalinity'warm lake). Nitrogen and phosphorus concentrations were ratherlow.The inorganic nitrogen content fluctuated widely over the twoannual cycles examined. On the contrary, phosphorusconcentrationsshowed no significant changes. The limiting factor during1985-86was P, while N was limiting during stratification in 1988-89.Aweak correlation was found between the plankton communityfeatures(species abundance, biomass, chlorophyll-a) and lightpenetration. At present the eutrophication process fromoligotrophytowards mesotrophy has not been essentiallyaccelerated.[PUBLICATION ABSTRACT]
ISSN:0018-8158
1573-5117
DOI:10.1023/A:1002914629984