Study ID 482

ITEX Dataset 4 - Qhi (He and Ko)

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Realm: Terrestrial
Climate: Polar
Biome: Tundra
Central latitude: 69.575670
Central longitude: -138.865605
Duration: 3 years, from 1999 to 2009

640 records

48 distinct species

Across the time series Moss is the most frequently occurring species

Citation(s):

Elmendorf, S.C. (2012) Global Tundra Vegetation Change –30 years of plant abundance data from unmanipulated and experimentally-warmed plots. Available at: http://www.polardata.ca, accessed 2017. CCIN reference number 10786.Elmendorf, S.C., Henry, G.H., Hollister, R.D., Björk, R.G., Bjorkman, A.D., Callaghan, T.V., Collier, L.S., Cooper, E.J., Cornelissen, J.H. & Day, T.A. (2012a) Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time. Ecology letters, 15, 164–175.Elmendorf, S.C., Henry, G.H., Hollister, R.D., Björk, R.G., Boulanger-Lapointe, N., Cooper, E.J., Cornelissen, J.H., Day, T.A., Dorrepaal, E. & Elumeeva, T.G. (2012b) Plot-scale evidence of tundra vegetation change and links to recent summer warming. Nature Climate Change, 2, 453–457.Elmendorf, S.C., Henry, G.H., Hollister, R.D., Fosaa, A.M., Gould, W.A., Hermanutz, L., Hofgaard, A., Jónsdóttir, I.S., Jorgenson, J.C. & Lévesque, E. (2015) Experiment, monitoring, and gradient methods used to infer climate change effects on plant communities yield consistent patterns. Proceedings of the National Academy of Sciences, 112, 448–452.

Methods

Vegetation: Point frame abundance measurements. Canopy height was measured for each grid coordinate for 1999 and 2004 and at the 4 corners and centre of the plots in 2009.Abundance units: point frame hits.Plot size: 1 m2Subsite area: Each subsite was a transect of 6 plots spaced 10m apart, a 60m long transect, the two subsites (HE and KO) are 250m apart. Missing taxa/years: Some species were idenfied in some years and not others. All these taxa were combinedinto categories so that the taxa are consistently reported in all years.In 1999 for plot HE2, one row of 10 points of data are missing.Warming treatment: None