Περιλαμβάνονται, με χρονολογική σειρά, δημοσιεύσεις στις οποίες έχουν χρησιμοποιηθεί δεδομένα από το εθνικό δίκτυο παρακολούθησης λιμνών.
Αναρτημένες ανακοινώσεις σε συνέδρια
Kemitzoglou, Dimitra; Karadimou, E.; Katsavouni, S.; Navrozidou, V.; Nikolopoulou, I.; Seferlis, Miltiadis; Zerva, I.; Tsiaoussi, Vasiliki
Proposing biologically-based nutrient thresholds for Greek Lakes Αναρτημένη ανακοίνωση σε συνέδριο
13th Symposium for European Freshwater Sciences. Newcastle, UK 18-23/06/2023. Poster presentation. Η Συλλογή του ΕΚΒΥ, 2023.
Περίληψη | Σύνδεσμοι | BibTeX | Ετικέτες: Λίμνες, Υγρότοποι, Φυσικοχημική ανάλυση
@conference{Kemitzoglou2023,
title = {Proposing biologically-based nutrient thresholds for Greek Lakes},
author = {Dimitra Kemitzoglou and E. Karadimou and S. Katsavouni and V. Navrozidou and I. Nikolopoulou and Miltiadis Seferlis and I. Zerva and Vasiliki Tsiaoussi},
url = {http://hdl.handle.net/11340/2084},
year = {2023},
date = {2023-06-18},
urldate = {2023-06-18},
publisher = {13th Symposium for European Freshwater Sciences. Newcastle, UK 18-23/06/2023. Poster presentation. Η Συλλογή του ΕΚΒΥ},
abstract = {According to WFD, the composition and abundance of biological communities guide the assessment of lake ecological status; physicochemical parameters, such as nutrients, are supportive elements in this process. In this context, the thresholds of Good-Moderate (GM) status for Total Phosphorus concentrations (TP) in two high alkalinity lake types in Greece have been proposed using a European toolkit. Our objective was to investigate the conformity of GM thresholds for TP with changes in biological communities of two types of lake ecosystems, shallow polymictic and warm monomictic, in Greece. We examined pressure response relationships using data collated from the National Monitoring Network. We plotted parameters of phytoplankton, aquatic macrophytes and water transparency across TP concentrations in the two types of natural lakes. In TP threshold values of 20-40 μg/l changes in biological communities and water transparency were observed in both lake types. These nutrient thresholds seem comparable with the ones proposed with the application of a standard toolkit. Changes in the composition and abundance of biological communities, as well as in water transparency, appear to be explained by TP concentrations in two types of natural lakes in Greece. Efforts should focus in minimizing phosphorus loading in lake waters.},
keywords = {Λίμνες, Υγρότοποι, Φυσικοχημική ανάλυση},
pubstate = {published},
tppubtype = {conference}
}
According to WFD, the composition and abundance of biological communities guide the assessment of lake ecological status; physicochemical parameters, such as nutrients, are supportive elements in this process. In this context, the thresholds of Good-Moderate (GM) status for Total Phosphorus concentrations (TP) in two high alkalinity lake types in Greece have been proposed using a European toolkit. Our objective was to investigate the conformity of GM thresholds for TP with changes in biological communities of two types of lake ecosystems, shallow polymictic and warm monomictic, in Greece. We examined pressure response relationships using data collated from the National Monitoring Network. We plotted parameters of phytoplankton, aquatic macrophytes and water transparency across TP concentrations in the two types of natural lakes. In TP threshold values of 20-40 μg/l changes in biological communities and water transparency were observed in both lake types. These nutrient thresholds seem comparable with the ones proposed with the application of a standard toolkit. Changes in the composition and abundance of biological communities, as well as in water transparency, appear to be explained by TP concentrations in two types of natural lakes in Greece. Efforts should focus in minimizing phosphorus loading in lake waters.
Navrozidou, V.; Nikolopoulou, I.; Katsavouni, S.; Seferlis, Miltiadis; Tsiaoussi, Vasiliki
Phytoplankton taxonomic groups in relation to physicochemical parameters. A case study from Greek lakes Αναρτημένη ανακοίνωση σε συνέδριο
13th Symposium for European Freshwater Sciences. Newcastle, UK 18-23/06/2023. Poster presentation. Η Συλλογή του ΕΚΒΥ, 2023.
Περίληψη | Σύνδεσμοι | BibTeX | Ετικέτες: Λίμνες, Υγρότοποι, Φυσικοχημική ανάλυση, Φυτοπλαγκτόν
@conference{Navrozidou2023,
title = {Phytoplankton taxonomic groups in relation to physicochemical parameters. A case study from Greek lakes},
author = {V. Navrozidou and I. Nikolopoulou and S. Katsavouni and Miltiadis Seferlis and Vasiliki Tsiaoussi},
url = {http://hdl.handle.net/11340/2083},
year = {2023},
date = {2023-06-18},
urldate = {2023-06-18},
publisher = {13th Symposium for European Freshwater Sciences. Newcastle, UK 18-23/06/2023. Poster presentation. Η Συλλογή του ΕΚΒΥ},
abstract = {The composition, abundance and biomass of phytoplankton are long considered as indicative of the eutrophication pressure in lakes. In addition, cyanobacteria-formed algal blooms are mostly linked to poor water quality. The objectives of the present study were a) to explore phytoplankton groups and physicochemical parameters of lakes in a Mediterranean setting and b) to investigate the response of phytoplankton taxonomic groups to phosphorus loading in those lakes. We analyzed data from the National Monitoring Network from 2019-2021 for 16 freshwater lakes in Greece. Water transparency, ionic composition and Total Phosphorus (TP) were correlated with major phytoplankton groups (chlorophytes, dinoflagellates, cryptophytes, bacillariophyceae and cyanobacteria). Based on both phytoplankton and physicochemical parameters, two groups of lakes were formed in cluster analysis, corresponding a) to deep warm monomictic and b) shallow and very shallow polymictic lakes. With regard to the impact from phosphorus loading, in both groups of lakes, a considerable increase of cyanobacteria biomass along a TP gradient was observed. Chlorophytes showed a statistically significant response in relation to TP in shallow and very shallow lakes. The results highlight the importance of phytoplankton in monitoring and evaluation of the status of aquatic ecosystems as phytoplankton biomass and community structure respond to changes in environmental parameters.},
keywords = {Λίμνες, Υγρότοποι, Φυσικοχημική ανάλυση, Φυτοπλαγκτόν},
pubstate = {published},
tppubtype = {conference}
}
The composition, abundance and biomass of phytoplankton are long considered as indicative of the eutrophication pressure in lakes. In addition, cyanobacteria-formed algal blooms are mostly linked to poor water quality. The objectives of the present study were a) to explore phytoplankton groups and physicochemical parameters of lakes in a Mediterranean setting and b) to investigate the response of phytoplankton taxonomic groups to phosphorus loading in those lakes. We analyzed data from the National Monitoring Network from 2019-2021 for 16 freshwater lakes in Greece. Water transparency, ionic composition and Total Phosphorus (TP) were correlated with major phytoplankton groups (chlorophytes, dinoflagellates, cryptophytes, bacillariophyceae and cyanobacteria). Based on both phytoplankton and physicochemical parameters, two groups of lakes were formed in cluster analysis, corresponding a) to deep warm monomictic and b) shallow and very shallow polymictic lakes. With regard to the impact from phosphorus loading, in both groups of lakes, a considerable increase of cyanobacteria biomass along a TP gradient was observed. Chlorophytes showed a statistically significant response in relation to TP in shallow and very shallow lakes. The results highlight the importance of phytoplankton in monitoring and evaluation of the status of aquatic ecosystems as phytoplankton biomass and community structure respond to changes in environmental parameters.
