Development of tree ring like proxy on arctic shrubs Cassiope tetragona to reconstruct polar climate
Entry ID: Cassiope_Arctic_Climate_Proxy_Weijers_IPY59_NL

[ Update this Record ]

Summary
Abstract: Annual stem length, annual number of leaves, annual average leaf length, annual total leaf length and leaf lifespan. All of Cassiope tetragona. These parameters were measured at three sites: Ny-Ålesund and Endalen in Svalbard and for Abisko, Sweden. Same parameters were measured in 17 control and 17 Open Top Chambers plots near Ny-Ålesund. Same parameters were measured in 20 control and 20 PAR-reduced plots at Isdammen, near Longyearbyen, Svalbard Same parameters were measured in 10 control and 10 doubled ambient precipitation plots at Isdammen, near Longyearbyen, Svalbard Temperature data at vegetation height was measured in all plots and several sites in and around Longyearbyen and in control and OTC plots in Endalen, Svalbard during the summers of 2008-2011. PAR radiation was measured in control and PAR plots in the summer of 2009. Soil moisture was measured at three sites near Longyearbyen (Huset, Nybyen and Isdammen).

Purpose: The study aims to validate the use of annual growth parameters of the arctic dwarf shrubs Cassiope tetragona as proxy for past arctic summer temperatures. Dendrochronological techniques are applied in order to establish reliable growth-temperature transfer functions that allow temperature reconstruction on the high arctic archipelago Svalbard.

Subsequently climate-growth relationships are further experimentally assessed by manipulating growth in the field through warming of the tundra with Open Top Chambers (OTC's), lowering of the Photosynthetically Active Radiation (PAR) with tents (-50%) and doubling the ambient precipitation in field sites near Longyearbyen and Ny-Ålesund in Svalbard.

Related URL
Link: VIEW RELATED INFORMATION
Description: Faculty home page


Geographic Coverage
 N: 78.9 S: 68.4  E: 18.8  W: 11.9
 Min Altitude: 6 M  Max Altitude: 500 M

Data Set Citation
Dataset Originator/Creator: Weijers, S.
Dataset Title: Annual growth parameters of Cassiope tetragona
Dataset Publisher: Weijers, S.


Temporal Coverage
Start Date: 2008-01-15
Stop Date: 2012-01-14


Location Keywords
CONTINENT > EUROPE > NORTHERN EUROPE > SCANDINAVIA > NORWAY
CONTINENT > EUROPE > NORTHERN EUROPE > SCANDINAVIA > SWEDEN
GEOGRAPHIC REGION > ARCTIC
GEOGRAPHIC REGION > NORTHERN HEMISPHERE
GEOGRAPHIC REGION > POLAR
VERTICAL LOCATION > LAND SURFACE


Science Keywords
BIOSPHERE >TERRESTRIAL ECOSYSTEMS >ALPINE/TUNDRA    [Definition]
BIOSPHERE >VEGETATION >DOMINANT SPECIES    [Definition]
BIOSPHERE >VEGETATION >LEAF CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION >PHOTOSYNTHETICALLY ACTIVE RADIATION    [Definition]
BIOSPHERE >VEGETATION >PLANT CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION >TREE RINGS    [Definition]
LAND SURFACE >LAND TEMPERATURE >LAND SURFACE TEMPERATURE    [Definition]
PALEOCLIMATE >LAND RECORDS >ISOTOPES    [Definition]
PALEOCLIMATE >LAND RECORDS >TREE RINGS    [Definition]
BIOSPHERE >VEGETATION >EVERGREEN VEGETATION    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >AIR TEMPERATURE RECONSTRUCTION    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >DROUGHT/PRECIPITATION RECONSTRUCTION    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >GROUND WATER RECONSTRUCTION    [Definition]
BIOLOGICAL CLASSIFICATION >PLANTS >ANGIOSPERMS (FLOWERING PLANTS) >DICOTS


ISO Topic Category
BIOTA


Platform
FIELD INVESTIGATION    [Information]


Project
IPY >INTERNATIONAL POLAR YEAR    [Information]
EBA >Evolution and Biodiversity in the Antarctic    [Information]
TARANTELLA >Terrestrial ecosystems: Effects of UV Light, Liquefying ice, and Ascending temp.    [Information]


Access Constraints
Contact scientists for the data.


Use Constraints
Contact scientists for the data.


Keywords
Cassiope tetragona
Dendrochronology
IPY-NL


Data Set Progress
IN WORK


Originating Center
VU University Amsterdam, FALW, Systemsecology


Data Center
Netherlands National Polar Data Centre, Royal Netherlands Institute for Sea Research, Netherlands Organization for Scientific Research, Netherlands    [Information]
Data Center URL: http://www.nioz.nl/dmg

Data Center Personnel
Name: IRA VAN DEN BROEK
Phone: +31 222 369 420
Fax: +31 222 319 674
Email: ira.van.den.broek at nioz.nl
Contact Address:
P.O. Box 59
City: Den Burg
Postal Code: 1790 AB
Country: The Netherlands



Data Center Personnel
Name: TACO F. DE BRUIN
Phone: +31-222-369 479
Fax: +31-222-319674
Email: bruin at nioz.nl
Contact Address:
P.O. Box 59
City: Den Burg
Postal Code: 1790 AB
Country: The Netherlands



Distribution
Distribution_Media: CD


Personnel
STEF WEIJERS
Role: INVESTIGATOR
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: +31 (0) 20 59 87047
Email: stef.weijers at falw.vu.nl
Contact Address:
Vrije Universiteit Amsterdam
Faculty of Earth and Life Sciences
Systems Ecology
De Boelelaan 1085
City: Amsterdam
Postal Code: 1081 HV
Country: The Netherlands


JELTE ROZEMA
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Phone: +31 (0) 20 59 87055
Email: jelte.rozema at ecology.falw.vu.nl
Contact Address:
Vrije Universiteit Amsterdam
Faculty of Earth and Life Sciences
Systems Ecology
De Boelelaan 1085
City: Amsterdam
Postal Code: 1081 HV
Country: The Netherlands


Publications/References
Weijers, S., Broekman, R., and Rozema, J. (2010) Dendrochronology in the High Arctic: July air temperatures reconstructed from annual shoot length growth of the circumarctic dwarf shrub Cassiope tetragona. Quaternary Science Reviews 29, 3831-3842

Rozema J., Weijers S., Broekman R., Blokker P., Buizer B., Werleman C., El Yaqine H., Hoogedoorn H., Fuertes M.M., and Cooper E. (2009) Annual growth of Cassiope tetragona as a proxy for Arctic climate: developing correlative and experimental transfer functions to reconstruct past summer temperature on a millennial time scale Global Change Biology 15 1703–1715

Creation and Review Dates
DIF Creation Date: 2012-01-03
Last DIF Revision Date: 2012-01-03

[ Update this Record ]


Link to Web Site