NDLI: The Holocene–Anthropocene transition in lakes of western Spitsbergen, Svalbard (Norwegian High Arctic): climate change and nitrogen deposition

Content Provider	Springer Nature Link
Author	Holmgren, Sofia U. Bigler, Christian Ingólfsson, Ólafur Wolfe, Alexander P.
Copyright Year	2009
Abstract	Lake sediments from four small lakes on western Spitsbergen (Svalbard Archipelago, Norwegian High Arctic) preserve biostratigraphic and isotopic evidence for a complex suite of twentieth century environmental changes. At Lake Skardtjørna and Lake Tjørnskardet on Nordenskiöldkysten, there is a marked diatom floristic change coupled to increased diatom concentrations beginning around 1920. At Lake Istjørna and Lake Istjørnelva, 25 km southwest of Longyearbyen, both diatom total valve and chrysophyte stomatocyst concentrations have increased dramatically since the beginning of the 1900s. The early twentieth century changes are probably related to climate warming after the Little Ice Age. However, the most pronounced changes in diatom assemblages seem to have occurred in the last few decades. At the same time, nitrogen stable isotopes in sediment organic matter in two of the lakes became progressively depleted by ~2‰, which is consistent with diffuse atmospheric inputs from anthropogenic sources and attendant fertilization. These data suggest that climate change and nitrogen deposition may be acting together in driving these lakes towards new ecological states that are unique in the context of the Holocene.
Starting Page	393
Ending Page	412
Page Count	20
File Format	PDF
ISSN	09212728
Journal	Journal of Paleolimnology
Volume Number	43
Issue Number	2
e-ISSN	15730417
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-05-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anthropocene Arctic Diatoms Nitrogen Paleolimnology Spitsbergen Geology Freshwater & Marine Ecology Physical Geography Climate Change Sedimentology Paleontology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Aquatic Science

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Original paper the holocene–anthropocene transition in lakes of western spitsbergen, svalbard (norwegian high arctic): climate change and nitrogen deposition (2008).

The Holocene–Anthropocene transition in lakes of western Spitsbergen, Svalbard (Norwegian High Arctic): climate change and nitrogen deposition

Algal pigments in Arctic lake sediments record biogeochemical changes due to Holocene climate variability and anthropogenic global change

A caveat regarding diatom-inferred nitrogen concentrations in oligotrophic lakes

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The Holocene–Anthropocene transition in lakes of western Spitsbergen, Svalbard (Norwegian High Arctic): climate change and nitrogen deposition

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Original paper the holocene–anthropocene transition in lakes of western spitsbergen, svalbard (norwegian high arctic): climate change and nitrogen deposition (2008).

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