Interannual and Spatial Variability of Cyanotoxins in the Prespa Lake Area, Greece

Water

ElisabethJ. Faassen¹  Miquel Lürling¹  Frankvan van Oosterhout¹  Christian Fritz²  Valentini Maliaka²  YvonJ.M. Verstijnen²  AlfonsJ.P. Smolders² 

[1] Aquatic Ecology & Water Quality Management Group, Department of Environmental Sciences, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;Institute for Water and Wetland Research, Department of Aquatic Ecology and Environmental Biology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands;

关键词: cyanobacterial toxin;    LC-MS/MS;    Prespa Lake;    Microcystin;    eutrophication;    migrating birds;   

DOI  :  10.3390/w13030357

来源: DOAJ

【 摘 要 】

The Prespa Lakes area in Greece—comprised partly of lake Great and lake Lesser Prespa and the Vromolimni pond—has a global importance for biodiversity. Although the waters show regular cyanobacteria blooms, assessments of water quality threats are limited. Samples collected in 2012 revealed scattered and low microcystin (MC) concentrations in Great Prespa (<0.2 μg MC L⁻¹) whereas considerable spatial heterogeneity in both total chlorophyll (2.4–93 µg L⁻¹) and MC concentrations (0.04–52.4 µg MC L⁻¹) was detected in Lesser Prespa. In 2013, there was far less spatial variability of MC concentrations in Lesser Prespa (0.4–1.53 µg L⁻¹), however in 2014, increased concentrations were detected near the lakeshore (25–861 µg MC L⁻¹). In Vromolimni pond the MC concentrations were on average 26.6 (±6.4) µg MC L⁻¹ in 2012, 2.1 (±0.3) µg MC L⁻¹ in 2013 and 12.7 (±12.5) µg MC L⁻¹ in 2014. In 2013, no anatoxins, saxitoxins, nor cylindrospermopsins were detected in Lesser Prespa and Vromolimni waters. Tissue samples from carps, an otter and Dalmatian Pelicans contained 0.4–1.9 µg MC g⁻¹ dry weight. These results indicate that cyanotoxins could be a threat to the ecosystem functions of particularly Lesser Prespa and Vromolimni.

【 授权许可】

Unknown