Fil:Innoko NWR collapse scar bogs.jpg

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Innoko_NWR_collapse_scar_bogs.jpg ‎(640 × 480 piksler, filstørrelse: 211 KB, MIME-type: image/jpeg)

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Beskrivelse

BeskrivelseInnoko NWR collapse scar bogs.jpg	English: Collapse-scar bogs at Innoko National Wildlife Refuge, Alaska, USA. September, 2012. When permafrost thaws, the ground surface subsides and becomes inundated and the black spruce forest growing on the permafrost can no longer survive. Trees teetering and falling over in thawing permafrost are often referred to as "drunken trees." The black spruce forest is replaced by a saturated bog, dominated by sedges and mosses. This wholesale ecological transformation has large impacts on carbon cycling.
Dato	26. januar 2014, 22:04:45
Kilde	http://gallery.usgs.gov/photos/01_10_2014_uYPc62Err4_01_10_2014_0#.UuX26_fTnrd
Opphavsperson	Photographer: Miriam Jones, U.S. Geological Survey

Lisensiering

This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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