NDLI: Quantification of Holocene lake-level changes in Finnish Lapland using a cladocera

Content Provider	Springer Nature Link
Author	Korhola, Atte Tikkanen, Matti Weckström, Jan
Copyright Year	2005
Abstract	During recent years, numerous studies dealing with Holocene lake level fluctuations have been conducted in Finnish Lapland. However, no quantification of lake level variations exists to date. Here, we applied a recently developed modern cladocera – lake depth transfer model to subfossil cladocerans analysed from three small and shallow (< 6 m) kettle-hole lakes in northwestern Finnish Lapland to provide estimates of the amplitudes of long-term lake-level changes in the region. The quantitative inferences were compared to pollen, charcoal and geochemical records from one of the study sites. The lake levels were inferred to be high during the early Holocene; they faced marked reduction up to 4–6 m in the mid-Holocene (≈7000–4000 cal yr BP), and rose again during the latter part of the Holocene. There is some indication of lowered lake levels around 1500 cal yr BP, but interpretation of such small-scale changes is hazardous due to large prediction errors in the initial cladoceran model. The overall pattern of the Holocene lake level variation generally followed the regional changes in climate humidity as reconstructed in previous studies by means of other sedimentary proxy indicators, such as pollen and oxygen isotopic compositions. We postulate that changes in winter precipitation may have had a greater influence on lake-levels than variations in summer precipitation or evaporation.
Starting Page	175
Ending Page	190
Page Count	16
File Format	PDF
ISSN	09212728
Journal	Journal of Paleolimnology
Volume Number	34
Issue Number	2
e-ISSN	15730417
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cladocerans Finnish Lapland Holocene Kettle-hole lakes Lake levels Lithostratigraphy Pollen Transfer model Sedimentology Physical Geography Hydrobiology Environment Climate Change
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Aquatic Science

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