Water chemistry, and pigments and geochemistry of sediments from northern Victoria Land lakes, supplement to: Borghini, Francesca; Colacevich, Andrea; Bargagli, Roberto (2007): Water geochemistry and sedimentary pigments in northern Victoria Land lakes, Antarctica. Polar Biology, 30, 1173-1182

• Main Authors: Borghini, Francesca, Colacevich, Andrea, Bargagli, Roberto
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2007
• Subjects: International Polar Year 2007-2008 IPY; Antarctic; Victoria Land; Antarc*; Antarctica; International Polar Year; IPY
• Online Access: https://dx.doi.org/10.1594/pangaea.807926; https://doi.pangaea.de/10.1594/PANGAEA.807926

Total concentrations of algal pigments, organic C, C, N, P and S were determined in surface sediments from the littoral zone of 21 lakes in ice-free areas of northern Victoria Land (Antarctica) with different climatic and environmental conditions. Concentrations of major ions and nutrients were also determined in water samples from the same lakes. The latter samples had extremely variable chemical compositions; however, all the lakes resulted oligotrophic. Pigment concentrations in surface sediments were comparable to those reported for other Antarctic lakes and lower than those in oligotrophic lakes at lower latitudes. Cyanophyta, Chlorophyta and Bacillariophyta were the main taxa identified. These taxa correspond to those reported in previous microscopy-based studies on Antarctic phytoplankton and phytobenthos. Discriminant Function Analysis and Canonical Correspondence Analysis of data indicate that the distribution of pigments in these Victoria Land lakes depends mainly on their geographical location (particularly the distance from the sea) and nutrient status. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150