(Table 1) Normalized difference vegetation index in control and warming plots, Abisco Research Station ...

• Main Authors: Bokhorst, Stef, Tømmervik, H, Callaghan, Terry V, Phoenix, Gareth K, Bjerke, Jarle W
• Format: Dataset
• Language: English
• Published: PANGAEA 2012
• Subjects: Method comment; DATE/TIME; Treatment; Normalized Difference Vegetation Index; Standard error; Incubation of surface soil/sediment, in-situ; International Polar Year 2007-2008 IPY; Arctic; Climate change; Empetrum nigrum; International Polar Year; IPY
• Online Access: https://dx.doi.org/10.1594/pangaea.807879; https://doi.pangaea.de/10.1594/PANGAEA.807879

Extreme winter warming events in the sub-Arctic have caused considerable vegetation damage due to rapid changes in temperature and loss of snow cover. The frequency of extreme weather is expected to increase due to climate change thereby increasing the potential for recurring vegetation damage in Arctic regions. Here we present data on vegetation recovery from one such natural event and multiple experimental simulations in the sub-Arctic using remote sensing, handheld passive proximal sensors and ground surveys.Normalized difference vegetation index (NDVI) recovered fast (2 years), from the 26% decline following one natural extreme winter warming event. Recovery was associated with declines in dead Empetrum nigrum (dominant dwarf shrub) from ground surveys. However, E. nigrum healthy leaf NDVI was also reduced (16%) following this winter warming event in experimental plots (both control and treatments), suggesting that non-obvious plant damage (i.e., physiological stress) had occurred in addition to the dead ... : All NDVI values are means of n = 6. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...