Water transparency, surface water temperature, chlorophyll a content and primary production depth profiles of Estonian lakes (Võrtsjärv, Peipsi, Harku, Koorküla) in 2004-2009
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Kuupäev
2026
Kättesaadavus
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
For chlorophyll a (chl_a, mg/m3) analysis , plankton was collected on Whatman glass fibre filters (GF/F), pigments were extracted with 96% ethanol, analysed spectrophotometrically, and calculated according to Lorenzen (1967). Water transparency (secchi, m) was measured with Secchi disc visibility. Phytoplankton primary production (pp, mgC/m3/h) was measured in situ with 14C-assimilation technique according to Steeman-Nielsen (1952).
Lorenzen, C. J., 1967. Determination of chlorophyll and phaeopigments: spectrophotometric equations. Limnology and Oceanography 12: 343–346.
Steeman-Nielsen, E., 1952. The use of radioactive carbon (14C) for measuring organic production in the sea. Journal du Conseil 18: 117–140.
Lorenzen, C. J., 1967. Determination of chlorophyll and phaeopigments: spectrophotometric equations. Limnology and Oceanography 12: 343–346.
Steeman-Nielsen, E., 1952. The use of radioactive carbon (14C) for measuring organic production in the sea. Journal du Conseil 18: 117–140.
Kirjeldus
For any use of the data, please contact Tiina Nõges (tiina.noges@emu.ee) to discuss potential co-authorship.
Märksõnad
lake, primary production, depth profiles, data
Viide
Nõges, T. (2026). Water transparency, surface water temperature, chlorophyll a content and primary production depth profiles of Estonian lakes (Võrtsjärv, Peipsi, Harku, Koorküla) in 2004-2009 [Data set]. Estonian University of Life Sciences. https://doi.org/10.15159/EDS.DT.26.01