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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Hasselquist, Niles
|e verfasserin
|4 aut
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|a Variability of Cenococcum colonization and its ecophysiological significance for young conifers at alpine-treeline
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|c 2005
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|a Text
|b txt
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|a ohne Hilfsmittel zu benutzen
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|2 rdamedia
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|2 rdacarrier
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|a Date Completed 24.05.2005
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a * Plants establishing in environments that are marginal for growth could be particularly sensitive to mycorrhizal associations. We investigated ectomycorrhizal colonization and its significance for young conifers growing at, or above, their normal limits for growth, in the alpine-treeline ecotone. * Colonization of seedlings (<1 yr old) and juveniles (2- to 10-yr-old) of Picea engelmannii and Abies lasiocarpa by Cenococcum geophilum was determined in a field study, and effects of Cenococcum on Picea seedling ecophysiology were investigated in a glasshouse. * Colonization by Cenococcum was c. 20-fold greater for juveniles than seedlings, and approximately 4-fold greater adjacent compared with approximately 7 m away from trees. Juveniles of Picea were more colonized at timberline than Abies, and the opposite relationship was observed in forest. Colonization enhanced seedling water potential, but not phosphorus concentrations or photosynthesis. * These landscape and age-dependent variations in colonization correspond well with known variations in conifer physiology and establishment near timberline. Facilitation of seedling establishment by older trees at alpine-treeline may include a below-ground, mycorrhizal component that complements previously reported effects of trees on the microclimate and ecophysiology of seedlings
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Germino, Matthew J
|e verfasserin
|4 aut
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|a McGonigle, Terence
|e verfasserin
|4 aut
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|a Smith, William K
|e verfasserin
|4 aut
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|i Enthalten in
|t The New phytologist
|d 1979
|g 165(2005), 3 vom: 01. März, Seite 867-73
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|x 1469-8137
|7 nnns
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|g volume:165
|g year:2005
|g number:3
|g day:01
|g month:03
|g pages:867-73
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|j 2005
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|h 867-73
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