Subarctic Forest-Tundra Vegetation Gradients: The Sigmoid Wave Hypothesis

Spatial changes in tree and upland tundra cover in response to a complex environmental gradient and to landscape factors were investigated in the high subarctic forest-tundra of NW Canada. Vegetation and terrain studies provided ground truth for a grid of 1314 air photos which covered 24 % of the Ca...

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Bibliographische Detailangaben
Veröffentlicht in:	Journal of Vegetation Science. - Opulus Press. - 4(1993), 3, Seite 387-394
1. Verfasser:	Timoney, K. P. (VerfasserIn)
Weitere Verfasser:	La Roi, G. H., Dale, M. R. T.
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	1993
Zugriff auf das übergeordnete Werk:	Journal of Vegetation Science
Schlagworte:	Air Photo Boreal Canada Climate Fire Patch Size Snow Cover Terrain Treeline Weibull Function mehr... Biological sciences Physical sciences Environmental studies


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041			\|a eng
100	1		\|a Timoney, K. P. \|e verfasserin \|4 aut
245	1	0	\|a Subarctic Forest-Tundra Vegetation Gradients: The Sigmoid Wave Hypothesis
264		1	\|c 1993
336			\|a Text \|b txt \|2 rdacontent
337			\|a Computermedien \|b c \|2 rdamedia
338			\|a Online-Ressource \|b cr \|2 rdacarrier
520			\|a Spatial changes in tree and upland tundra cover in response to a complex environmental gradient and to landscape factors were investigated in the high subarctic forest-tundra of NW Canada. Vegetation and terrain studies provided ground truth for a grid of 1314 air photos which covered 24 % of the Canadian high subarctic and some of the adjacent low subarctic and low arctic. Across the high subarctic, gradual spatial change in % cover of tree and upland tundra vegetation is typical at both high and low cover values, with more rapid change occurring at intermediate cover. Cover gradients of zonal tree and tundra vegetation in the forest-tundra region in general follow a sigmoid pattern. Tundra and tree patch sizes increase in area and variability with higher tundra and tree cover, respectively.
540			\|a Copyright 1993 IAVS; Opulus Press Uppsala
650		4	\|a Air Photo
650		4	\|a Boreal
650		4	\|a Canada
650		4	\|a Climate
650		4	\|a Fire
650		4	\|a Patch Size
650		4	\|a Snow Cover
650		4	\|a Terrain
650		4	\|a Treeline
650		4	\|a Weibull Function
650		4	\|a Biological sciences \|x Ecology \|x Ecosystems \|x Biomes \|x Tundras
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plant ecology \|x Vegetation
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Dendrology \|x Trees
650		4	\|a Biological sciences \|x Ecology \|x Population ecology \|x Synecology \|x Biocenosis \|x Plant communities \|x Forests \|x Boreal forests
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Topography \|x Highlands
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Dendrology \|x Trees \|x Street trees
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Forestry \|x Forest mensuration \|x Timberlines
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Forestry \|x Silviculture \|x Silvicultural practices \|x Forest regeneration
650		4	\|a Biological sciences \|x Ecology \|x Population ecology \|x Synecology \|x Biocenosis \|x Plant communities \|x Forests \|x Montane forests
650		4	\|a Environmental studies \|x Environmental sciences \|x Climate change
655		4	\|a research-article
700	1		\|a La Roi, G. H. \|e verfasserin \|4 aut
700	1		\|a Dale, M. R. T. \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Journal of Vegetation Science \|d Opulus Press \|g 4(1993), 3, Seite 387-394 \|w (DE-627)329555960 \|w (DE-600)2047714-4 \|x 16541103 \|7 nnns
773	1	8	\|g volume:4 \|g year:1993 \|g number:3 \|g pages:387-394
856	4	0	\|u https://www.jstor.org/stable/3235597 \|3 Volltext
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912			\|a GBV_ILN_602
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912			\|a GBV_ILN_2034
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912			\|a GBV_ILN_2039
912			\|a GBV_ILN_2044
912			\|a GBV_ILN_2048
912			\|a GBV_ILN_2049
912			\|a GBV_ILN_2050
912			\|a GBV_ILN_2055
912			\|a GBV_ILN_2056
912			\|a GBV_ILN_2057
912			\|a GBV_ILN_2059
912			\|a GBV_ILN_2061
912			\|a GBV_ILN_2064
912			\|a GBV_ILN_2068
912			\|a GBV_ILN_2088
912			\|a GBV_ILN_2093
912			\|a GBV_ILN_2106
912			\|a GBV_ILN_2107
912			\|a GBV_ILN_2108
912			\|a GBV_ILN_2110
912			\|a GBV_ILN_2111
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912			\|a GBV_ILN_4012
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912			\|a GBV_ILN_4307
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912			\|a GBV_ILN_4323
912			\|a GBV_ILN_4324
912			\|a GBV_ILN_4325
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912			\|a GBV_ILN_4333
912			\|a GBV_ILN_4334
912			\|a GBV_ILN_4335
912			\|a GBV_ILN_4336
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912			\|a GBV_ILN_4346
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951			\|a AR
952			\|d 4 \|j 1993 \|e 3 \|h 387-394