Home >> Arctic Biodiversity Trends 2010 >> Disappearing Arctic lakes - examples in Siberian lakes, 1973 to 1997
File type Download Size Language
.pdf .pdf Download 14 mb -
.jpg .jpg Download 151 kb -
.png .png Download 971 kb -
Uploaded on Tuesday 21 Feb 2012 by GRID-Arendal

Disappearing Arctic lakes - examples in Siberian lakes, 1973 to 1997

Year: 2010 Author: Hugo Ahlenius, GRID-Arendal & CAFF
The Arctic contains a variety of types of lakes but overall, it is thermokarst lakes and ponds that are the most abundant and productive aquatic ecosystems in the Arctic. They are found extensively in the lowland regions of western and northern Alaska, Canada and Siberia. These (i.e., thaw) lakes are most commonly formed by the thaw of ice-rich permafrost, which leads to the collapse of ground levels and ponding of surface water in the depression. Continued thawing of the permafrost can lead to the drainage and eventual disappearance of these lakes, as can erosion and lake coalescence. These photos show that the total lake abundance and inundation area have declined since 1973 in the study area (Siberia), including permanent drainage and revegetation of former lakebeds (the arrow and oval show representative areas).
Views: 1066     Downloads: 265     Rating: 3
Arctic terrestrial species trends 1970-2005 (ASTI)
Current marine shipping uses in the Arctic
Distribution and trends of wild Rangifer in the Arctic
Ice coverage and primary production in the Arctic
Invasive species response to climate change - Hydrilla spp, current and 2080 habitat suitability
Location of datasets in the Arctic Species Trend Index (ASTI)
Trends in lakes in the Arctic
Wild food harvests in Alaska by area, 1990s