noaa-recon-9719
Mauntschas Mire, Switzerland 140Yr Testate Amoeba DWT Reconstruction
Lamentowicz, M.; van der Knaap, W.O.; Lamentowicz, L.; van Leeuwen, J.F.N.; Mitchell, E.A.D.; Goslar, T.; Kamenik, C.
Mauntschas Mire, Switzerland 140Yr Testate Amoeba DWT Reconstruction
2010-10-20
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/9719
Investigator
M.
Lamentowicz
Investigator
W.O.
van der Knaap
Investigator
L.
Lamentowicz
Investigator
J.F.N.
van Leeuwen
Investigator
E.A.D.
Mitchell
Investigator
T.
Goslar
Investigator
C.
Kamenik
earth science
paleoclimate
climate reconstructions|paleolimnology
water table depth,testate amoebae assemblage,unspecified margin of error,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
water table depth,testate amoebae assemblage,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
reconstructions
ground water
geoscientificInformation
Other Hydroclimate Reconstruction
hydrology
1864 AD
2003 AD
86 cal yr BP
-53 cal yr BP
Complete
46.4902
46.4902
9.8546
9.8546
1818
1818
Continent
Europe
Western Europe
Switzerland
Mauntschas Mire>LATITUDE 46.4902>LONGITUDE 9.8546
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Lamentowicz, M., W. Van Der Knaap, L. Lamentowicz, J.F.N. Van Leeuwen,
E.A.D. Mitchell, T. Goslar, and C. Kamenik. 2010.
A near-annual palaeohydrological study based on testate amoebae
from a sub-alpine mire: surface wetness and the role of climate
during the instrumental period.
J. Quaternary Sci., Vol. 25 pp. 190-202. ISSN 0267-8179.
We present the first testate amoeba-based palaeohydrological
reconstruction from the Swiss Alps, and the first depth to the
water table (DWT) calibration dataset for this region. Compared
to existing models, our new calibration dataset performs well
(RMSEP=4.88), despite the length of the water table gradient
covered (53 cm). The present-day topography and vegetation
of the study mire Mauntschas suggest that it is partly ombrotrophic
(large Sphagnum fuscum hummocks, one of which was the coring site)
but mostly under the minerotrophic influence of springs in the mire
and runoff from the surrounding area. Ombrotrophic Sphagnum fuscum
hummocks developed at the sampling site only during the last 50
years, when testate amoebae indicate a shift towards dry and/or
acid conditions. Prior to AD 1950 the water table was much higher,
suggesting that the influence of the mineral-rich water prevented
the development of ombrotrophic hummocks. The reconstructed DWT
correlated with Pinus cembra pollen accumulation rates, suggesting
that testate amoebae living on the mire and P. cembra growing
outside of it partly respond to the same factor(s). Finally,
temperature trends from the nearby meteorological station
paralleled trends in reconstructed DWT. However, contrary
to other studies made on raised bogs of northwestern Europe,
the highest correlation was observed for winter temperature,
despite the fact that testate amoebae would more logically
respond to moisture conditions during the growing season.
The observed correlation with winter temperature might reflect
a control of winter severity on surface moisture during at least
the first part of the growing season, through snow melt and soil
frost phenomena influencing run-off. More ecohydrological work
on subalpine mires is needed to understand the relationships
between climate, testate amoebae and peatland development.
STUDY NOTES: Depth to Water Table (DWT) reconstruction for Mauntschas mire
in the Swiss Alps. All calculations are based on percentage
of each species of Testate Amoeba in a sample (See Booth
et al., 2010). Age model is from Goslar et al. (2009).
Depth to Water Table (DWT) is dependent on vegetation season
temperature and summer water deficit, providing a mixed
temperature and precipitation signal.
Mauntschas is a Sphagnum mire located near St. Moritz in the
Upper Engadin valley, southeastern Swiss Alps, ~10 ha in size.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/switzerland/mauntschas2010dwt.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/switzerland/mauntschas2010dwt.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11