Phytoplankton abundance measured on water samples from rivers of the Lena Delta in 2010 ...

• Main Authors: Kraberg, Alexandra Claudia, Druzhkova, Elena I, Heim, Birgit, Löder, Martin G J, Wiltshire, Karen Helen
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: Event label; Sample code/label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; DEPTH, water; Sample volume; Acanthoceras; Plagiogrammopsis; Thalassiosira spp.; Coscinodiscus; Stephanodiscus spp.; cf. Cyclotella; Skeletonema spp.; Chaetoceros spp.; Aulacoseira cells, other; Melosira cf. varians; Melosira spp.; Tabellaria spp.; Asterionella formosa; Aulacoseira granulata; Aulacoseira granulata var. angustissima; Aulacoseira; Nitzschia; Fragilaria cf. crotonensis; Fragilaria; Synedra spp.; Synedra ulna; Fragilaria spp.; Diatoma spp.; Gomphonema; Diatoms, pennales; Meridion spp.; Surirella; Anabaena straight; Cyanobacteria; Anabaena, coiled, irregular; Anabaena, coiled, regular; Picocyanophytes; Aphanizomenon spp.; Cuspidothrix issatchenkoi; Cyanophyte filaments, undifferentiated; Pseudoanabaena spp.; Cyanophytes; Planktothrix spp.; Cyanophyte filaments, other; Aphanocapsa spp.; Lyngbya spp.; Desmodesmus spp.; Arctic; Arctic Ocean; Climate change; Ice; laptev; Laptev Sea; lena delta; lena river; permafrost; Phytoplankton; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.793226; https://doi.pangaea.de/10.1594/PANGAEA.793226

The Lena Delta in Northern Siberia is one of the largest river deltas in the world. During peak discharge, after the ice melt in spring, it delivers between 60-8000 m**3/s of water and sediment into the Arctic Ocean. The Lena Delta and the Laptev Sea coast also constitute a continuous permafrost region. Ongoing climate change, which is particularly pronounced in the Arctic, is leading to increased rates of permafrost thaw. This has already profoundly altered the discharge rates of the Lena River. But the chemistry of the river waters which are discharged into the coastal Laptev Sea have also been hypothesized to undergo considerable compositional changes, e.g. by increasing concentrations of inorganic nutrients such as dissolved organic carbon (DOC) and methane. These physical and chemical changes will also affect the composition of the phytoplankton communities. However, before potential consequences of climate change for coastal arctic phytoplankton communities can be judged, the inherent status of the ... : A further transect (transect 7) was sampled but not analyzed. ...