About: Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Průměrná hydraulická vodivost v systému půda-list se měnila statisticky nevýznamně s pozicí v koruně stromů varianty s navýšenou koncentrací CO2 (EC). Stromy varianty EC vykazovaly průkazně vyšší hodnoty hustoty toku xylémových šťáv na úrovni celé koruny a mírně vyšší obsah vody v půdě ve srovnání s variantou AC (přirozená koncentrace CO2). Z toho lze vyvodit větší ekonomické využití vody EC stromů a tudíž větší výhodu v podmínkách nedostatku vody. (cs) Water relations were studied in Picea abies trees grown at ambient (AC, 350 mol mol-1) and elevated (EC, 700 mol mol-1) [CO2] under temperate water stress. The results suggested that both crown position and variability in atmospheric [CO2] are responsible for different patterns of crown water relations. Mean hourly sap flux density (FSA) showed higher values in upper crown position in comparison with the whole crown in both AC and EC treatments. However, mean soil-to-leaf hydraulic conductance did not vary significantly with crown position in EC trees, suggesting that elevated CO2 may mitigate differences in hydraulic supply for different canopy layers. The trees in EC treatment exhibited significantly higher values of FSA measured on the whole crown level and slightly higher soil water content compared to AC treatment, suggesting more economical use of soil water and therefore an advantage under water-limited conditions. Water relations were studied in Picea abies trees grown at ambient (AC, 350 mol mol-1) and elevated (EC, 700 mol mol-1) [CO2] under temperate water stress. The results suggested that both crown position and variability in atmospheric [CO2] are responsible for different patterns of crown water relations. Mean hourly sap flux density (FSA) showed higher values in upper crown position in comparison with the whole crown in both AC and EC treatments. However, mean soil-to-leaf hydraulic conductance did not vary significantly with crown position in EC trees, suggesting that elevated CO2 may mitigate differences in hydraulic supply for different canopy layers. The trees in EC treatment exhibited significantly higher values of FSA measured on the whole crown level and slightly higher soil water content compared to AC treatment, suggesting more economical use of soil water and therefore an advantage under water-limited conditions. (en)
Title	Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations (en) Vodni bilance smrku ztepilého rostoucího v přirozené a zvýšené CO2 koncentraci (cs)
skos:prefLabel	Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations (en) Vodni bilance smrku ztepilého rostoucího v přirozené a zvýšené CO2 koncentraci (cs)
skos:notation	RIV/67179843:_____/06:00039578!RIV07-AV0-67179843
http://linked.open.../vavai/riv/strany	603;609
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z60870520)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Klimánková, Zdeňka Pokorný, Radek
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Centrum výzkumu globální změny AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	508845
http://linked.open...ai/riv/idVysledku	RIV/67179843:_____/06:00039578
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	global change; sap flux; shoot water potential (en)
http://linked.open.../riv/klicoveSlovo	shoot water potential sap flux global change
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[89EFBF11FC96]
http://linked.open...i/riv/nazevZdroje	Biologia Plantarum
http://linked.open...in/vavai/riv/obor	EH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	50
http://linked.open...iv/tvurceVysledku	Pokorný, Radek Klimánková, Zdeňka Puértolas, J. Kupper, P. Sellin, A.
http://linked.open...n/vavai/riv/zamer	Spatial and functional dynamics of biological, ecological and socio-economic systems interacting with global climatic change
issn	0006-3134
number of pages	7 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations

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