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231223s2007 xx ||||| 00| ||eng c |
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|a eng
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|a Sthultz, Christopher M
|e verfasserin
|4 aut
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|a Shifts from competition to facilitation between a foundation tree and a pioneer shrub across spatial and temporal scales in a semiarid woodland
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|c 2007
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|a Text
|b txt
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 05.03.2007
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|a Date Revised 30.09.2020
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|a published: Print
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|a CommentIn: New Phytol. 2007;173(1):3-6. doi: 10.1111/j.1469-8137.2006.01949.x. - PMID 17176387
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|a Citation Status MEDLINE
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|a * Theoretical and empirical research has supported the hypothesis that plant-plant interactions change from competition to facilitation with increasing abiotic stress. However, the consistency of such changes has been questioned in arid and semiarid ecosystems. * During a drought in the semiarid south-western USA, we used observations and a field experiment to examine the interactions between juveniles of a foundation tree (Pinyon pine, Pinus edulis) and a common shrub (Apache plume, Fallugia paradoxa) in replicated areas of high and low stress. * The presence of F. paradoxa reduced P. edulis performance at low-stress sites, but had the opposite effect at high-stress sites. However, the intensity of the interactions depended on temporal variation in climate and age of P. edulis. Both above- and below-ground factors contributed to competition, while only above-ground factors contributed to facilitation. * These results support the hypothesis that interactions can change from competition to facilitation as abiotic stress increases in semiarid environments. A shift from competition to facilitation may be important for the recovery of P. edulis and other foundation species that have experienced large-scale mortality during recent droughts
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Gehring, Catherine A
|e verfasserin
|4 aut
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|a Whitham, Thomas G
|e verfasserin
|4 aut
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|i Enthalten in
|t The New phytologist
|d 1990
|g 173(2007), 1 vom: 01., Seite 135-45
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|g volume:173
|g year:2007
|g number:1
|g day:01
|g pages:135-45
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