Preliminary investigation of thermal biosystem of Mount Rittmann fumaroles (Northern Victoria Land, Antarctica)
Entry ID: Thermal_biosys_MountRittmann

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Summary
Abstract: The biota and environment of fumarolic ground recently discovered near Mount
Rittmann are described. Three patches (about 1 m2 each) of the moss Pohlia
nutans were found in a minor caldera rim. Cyanophytes, chlorophytes, protozoa
and bacteria were isolated from the moss and warm ground (30-50 degrees C). The
results are compared with those of previous studies on Antarctic volcanoes. The
origin of the geothermal flora is discussed in terms of long-distance transport
of propagules to the continent.
Geographic Coverage
Spatial coordinates   
  N: -73.47   S: -73.47   E: 165.63   W: 165.63

Quality Two samples of vegetated soil were collected randomly and taken in sterile
bags. The water content and pH of samples was determined immediately in Terra
Nova Bay station. Back to Italy, concentrations of inorganic nutrient were
measured in soil extracts and in moss soil subsamples digested with
concentrated HNO3 in a Teflon bomb at 120 degrees. Element were determined by
inductively coupled plasma-atomic spectrometry (ICP-AES), atomic absorption
spectrometry (AAS) and electrothermal atomic absorption spectrometry (ETAAS).
Total organic C and N were determined in bulked soil subsamples (powdered and
sieved at 0.125 mm) according to the procedure outline by Gaudette et al.
(1974) and the Kjeldhal method, respectively.
Use Constraints none
Data Set Progress
COMPLETE
Originating Center
Data Center
Dipartimento di Science Ambientali (G. Sarfatti), Universita Delgi Studi di Siena, Italy Supplemental Info
Data Center URL: http://www.unisi.it/ricerca/dip/dba/

Data Center Personnel
Name: ROBERTO BARGAGLI
Phone: +39 0577 232828
Fax: +39 0577 232806
Email: bargagli at unisi.it
Contact Address:
via P. A. Mattioli n.4
City: Siena
Province or State: Tuscany
Postal Code: 53100
Country: Italy
Distribution
Distribution Media: Scientific Publications
Fees: none
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2004-11-08
Last DIF Revision Date: 2007-02-26
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