Citation:

s13280-011-0174-0

Name: (Table 1) Cover of shrub and tree species, and number of stems (>=3.5 cm DBH) during 1976-1977 and 2009-2010, respectively
Published: 2011
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Shrubs and trees are expected to expand in the sub-Arctic due to global warming. Our study was conducted in Abisko, sub-arctic Sweden. We recorded the change in coverage of shrub and tree species over a 32- to 34-year period, in three 50 x 50 m plots; in the alpine-tree-line ecotone. The cover of shrubs and trees (<3.5 cm diameter at breast height) were estimated during 2009-2010 and compared with historical documentation from 1976 to 1977. Similarly, all tree stems (>=3.5 cm) were noted and positions determined. There has been a substantial increase of cover of shrubs and trees, particularly dwarf birch (Betula nana), and mountain birch (Betula pubescens ssp. czerepanovii), and an establishment of aspen (Populus tremula). The other species willows (Salix spp.), juniper (Juniperus communis), and rowan (Sorbus aucuparia) revealed inconsistent changes among the plots. Although this study was unable to identify the causes for the change in shrubs and small trees, they are consistent with anticipated changes due to climate change and reduced herbivory.

Project(s):

International Polar Year (2007-2008) (IPY)

Coverage:

Latitude: 68.350000 * Longitude: 18.817000

Date/Time Start: 1976-01-01T00:00:00 * Date/Time End: 2010-01-01T00:00:00

Minimum Elevation: 340.0 m * Maximum Elevation: 400.0 m

Event(s):

Abisko_ANS (Abisko Scientific Research Station) * Latitude: 68.350000 * Longitude: 18.817000 * Elevation Start: 340.0 m * Elevation End: 400.0 m * Location: Abisko, Lappland, northern Sweden

Comment:

Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Area/locality	Area		Rundqvist, Sara	plot no.
2	DATE/TIME	Date/Time			Geocode
3	Date/time end	Date/time end		Rundqvist, Sara
4	Betula nana, cover	B. nana cov	m²	Rundqvist, Sara
5	Betula pubescens czerepanovii, cover	B. pubescens czerepanovii cov	m²	Rundqvist, Sara
6	Juniperus communis, cover	J. communis cov	m²	Rundqvist, Sara
7	Populus tremula, cover	P. tremula cov	m²	Rundqvist, Sara
8	Salix spp., cover	Salix spp. cov	m²	Rundqvist, Sara
9	Sorbus aucuparia, cover	S. aucuparia cov	m²	Rundqvist, Sara
10	Trees and shrubs, cover	Trees+shrubs cov	m²	Rundqvist, Sara
11	Number of stems	Stems	#	Rundqvist, Sara	>=3.5 cm DBH, B. pubescens czerepanovii
12	Number of stems	Stems	#	Rundqvist, Sara	>=3.5 cm DBH, Salix spp.
13	Number of stems	Stems	#	Rundqvist, Sara	>=3.5 cm DBH, S. aucuparia
14	Number of stems	Stems	#	Rundqvist, Sara	>=3.5 cm DBH, total

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

75 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Area (plot no.)	2 Date/Time	3 Date/time end	4 B. nana cov [m²]	5 B. pubescens czerepanovii cov [m²]	6 J. communis cov [m²]	7 P. tremula cov [m²]	8 Salix spp. cov [m²]	9 S. aucuparia cov [m²]	10 Trees+shrubs cov [m²]	11 Stems [#] (>=3.5 cm DBH, B. pubescens cz...)	12 Stems [#] (>=3.5 cm DBH, Salix spp.)	13 Stems [#] (>=3.5 cm DBH, S. aucuparia)	14 Stems [#] (>=3.5 cm DBH, total)
A2	1976	1977	421.4	75.7	41.5	0.0	153.3	13.0	704.8	193	2	3	198
A2	2010		653.1	521.1	28.9	2.8	104.4	8.6	1319.0	186	5	0	191
A3	1976	1977	38.6	39.6	356.5	0.0	213.3	4.4	652.4	33	5	3	41
A3	2009		107.3	241.1	387.2	11.0	253.0	14.9	1014.5	81	0	0	81
A4	1976	1977	501.5	6.3	164.7	0.0	33.3	0.1	705.9	1	0	0	1
A4	2009		954.5	47.4	170.0	1.6	100.6	0.1	1274.2	3	0	0	3