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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2011.03982.x
|2 doi
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|a eng
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|a Montesinos, D
|e verfasserin
|4 aut
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|a Genders in Juniperus thurifera have different functional responses to variations in nutrient availability
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|c 2012
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 03.05.2012
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|a Date Revised 23.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.
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|a • Differences in reproductive investment can trigger asymmetric, context-dependent, functional strategies between genders in dioecious species. However, little is known about the gender responses of dioecious species to nutrient availability. • We experimentally fertirrigated a set of male and female Juniperus thurifera trees monthly for 2 yr. Water potential, photosynthesis rate and stomatal conductance were measured monthly for 2 yr, while shoot nitrogen (N) concentration, carbon isotopic composition (δ(13) C), branch growth, trunk radial growth and reproductive investment per branch were measured yearly. • Control males had lower gas exchange rates and radial growth but greater reproductive investment and higher water use efficiency (WUE; as inferred from more positive δ(13) C values) than females. Fertirrigation did not affect water potential or WUE but genders responded differently to increased nutrient availability. The two genders similarly increased shoot N concentration when fertilized. The increase in shoot N was associated with increased photosynthesis in males but not in females, which presented consistently high photosynthetic rates across treatments. • Our results suggest that genders invest N surplus in different functions, with females presenting a long-term strategy by increasing N storage to compensate for massive reproductive masting events, while males seem to be more reactive to current nutrient availability, promoting gas-exchange capacity
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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|a Carbon Isotopes
|2 NLM
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|a Nitrogen
|2 NLM
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|a Villar-Salvador, P
|e verfasserin
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|a García-Fayos, P
|e verfasserin
|4 aut
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|a Verdú, M
|e verfasserin
|4 aut
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|i Enthalten in
|t The New phytologist
|d 1979
|g 193(2012), 3 vom: 17. Feb., Seite 705-712
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|x 1469-8137
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|g volume:193
|g year:2012
|g number:3
|g day:17
|g month:02
|g pages:705-712
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