Dying by drying: Timing of physiological stress thresholds related to tree death is not significantly altered by highly elevated CO2

被引:16
作者
Gattmann, Marielle [1 ]
Birami, Benjamin [1 ]
Sala, Daniel Nadal [1 ]
Ruehr, Nadine Katrin [1 ]
机构
[1] Karlsruhe Inst Technol KIT, Inst Meteorol & Climate Res Atmospher Environm Re, D-82467 Garmisch Partenkirchen, Germany
关键词
drought; net C balance; non‐ structural carbohydrates; respiration; tree mortality; turgor loss; water‐ use‐ efficiency; DROUGHT-INDUCED TREE; WATER-USE EFFICIENCY; STOMATAL CONDUCTANCE; HYDRAULIC FAILURE; ATMOSPHERIC CO2; CARBON-DIOXIDE; GAS-EXCHANGE; FOREST TREES; MORTALITY; RESPONSES;
D O I
10.1111/pce.13937
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Drought-induced tree mortality is expected to occur more frequently under predicted climate change. However, the extent of a possibly mitigating effect of simultaneously rising atmospheric [CO2] on stress thresholds leading to tree death is not fully understood, yet. Here, we studied the drought response, the time until critical stress thresholds were reached and mortality occurrence of Pinus halepensis (Miller). In order to observe a large potential benefit from eCO(2), the seedlings were grown with ample of water and nutrient supply under either highly elevated [CO2] (eCO(2), c. 936 ppm) or ambient (aCO(2), c. 407 ppm) during 2 years. The subsequent exposure to a fast or a slow lethal drought was monitored using whole-tree gas exchange chambers, measured leaf water potential and non-structural carbohydrates. Using logistic regressions to derive probabilities for physiological parameters to reach critical drought stress thresholds, indicated a longer period for halving needle starch storage under eCO(2) than aCO(2). Stomatal closure, turgor loss, the duration until the daily tree C balance turned negative, leaf water potential at thresholds and time-of-death were unaffected by eCO(2). Overall, our study provides for the first-time insights into the chronological interplay of physiological drought thresholds under long-term acclimation to elevated [CO2].
引用
收藏
页码:356 / 370
页数:15
相关论文
共 103 条
  • [1] Adams H.D., 2010, Eos Trans. AGU, V91, P153, DOI [DOI 10.1029/2010EO170003, 10.1029/2010EO170003]
  • [2] A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
    Adams, Henry D.
    Zeppel, Melanie J. B.
    Anderegg, William R. L.
    Hartmann, Henrik
    Landhausser, Simon M.
    Tissue, David T.
    Huxman, Travis E.
    Hudson, Patrick J.
    Franz, Trenton E.
    Allen, Craig D.
    Anderegg, Leander D. L.
    Barron-Gafford, Greg A.
    Beerling, David J.
    Breshears, David D.
    Brodribb, Timothy J.
    Bugmann, Harald
    Cobb, Richard C.
    Collins, Adam D.
    Dickman, L. Turin
    Duan, Honglang
    Ewers, Brent E.
    Galiano, Lucia
    Galvez, David A.
    Garcia-Forner, Nuria
    Gaylord, Monica L.
    Germino, Matthew J.
    Gessler, Arthur
    Hacke, Uwe G.
    Hakamada, Rodrigo
    Hector, Andy
    Jenkins, Michael W.
    Kane, Jeffrey M.
    Kolb, Thomas E.
    Law, Darin J.
    Lewis, James D.
    Limousin, Jean-Marc
    Love, David M.
    Macalady, Alison K.
    Martinez-Vilalta, Jordi
    Mencuccini, Maurizio
    Mitchell, Patrick J.
    Muss, Jordan D.
    O'Brien, Michael J.
    O'Grady, Anthony P.
    Pangle, Robert E.
    Pinkard, Elizabeth A.
    Piper, Frida I.
    Plaut, Jennifer A.
    Pockman, William T.
    Quirk, Joe
    [J]. NATURE ECOLOGY & EVOLUTION, 2017, 1 (09): : 1285 - 1291
  • [3] What have we learned from 15 years of free-air CO2 enrichment (FACE)?: A meta-analytic review of the responses of photosynthesis, canopy
    Ainsworth, EA
    Long, SP
    [J]. NEW PHYTOLOGIST, 2005, 165 (02) : 351 - 371
  • [4] The response of photosynthesis and stomatal conductance to rising [CO2]:: mechanisms and environmental interactions
    Ainsworth, Elizabeth A.
    Rogers, Alistair
    [J]. PLANT CELL AND ENVIRONMENT, 2007, 30 (03) : 258 - 270
  • [5] On underestimation of global vulnerability to tree mortality and forest die-off from hotter drought in the Anthropocene
    Allen, Craig D.
    Breshears, David D.
    McDowell, Nate G.
    [J]. ECOSPHERE, 2015, 6 (08):
  • [6] A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests
    Allen, Craig D.
    Macalady, Alison K.
    Chenchouni, Haroun
    Bachelet, Dominique
    McDowell, Nate
    Vennetier, Michel
    Kitzberger, Thomas
    Rigling, Andreas
    Breshears, David D.
    Hogg, E. H.
    Gonzalez, Patrick
    Fensham, Rod
    Zhang, Zhen
    Castro, Jorge
    Demidova, Natalia
    Lim, Jong-Hwan
    Allard, Gillian
    Running, Steven W.
    Semerci, Akkin
    Cobb, Neil
    [J]. FOREST ECOLOGY AND MANAGEMENT, 2010, 259 (04) : 660 - 684
  • [7] Widespread drought-induced tree mortality at dry range edges indicates that climate stress exceeds species' compensating mechanisms
    Anderegg, William R. L.
    Anderegg, Leander D. L.
    Kerr, Kelly L.
    Trugman, Anna T.
    [J]. GLOBAL CHANGE BIOLOGY, 2019, 25 (11) : 3793 - 3802
  • [8] Morphology and stomatal function of Douglas fir needles exposed to climate chance:: Elevated CO2 and temperature
    Apple, ME
    Olszyk, DM
    Ormrod, DP
    Lewis, A
    Southworth, D
    Tingey, DT
    [J]. INTERNATIONAL JOURNAL OF PLANT SCIENCES, 2000, 161 (01) : 127 - 132
  • [9] The correlations and sequence of plant stomatal, hydraulic, and wilting responses to drought
    Bartlett, Megan K.
    Klein, Tamir
    Jansen, Steven
    Choat, Brendan
    Sack, Lawren
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2016, 113 (46) : 13098 - 13103
  • [10] Fitting Linear Mixed-Effects Models Using lme4
    Bates, Douglas
    Maechler, Martin
    Bolker, Benjamin M.
    Walker, Steven C.
    [J]. JOURNAL OF STATISTICAL SOFTWARE, 2015, 67 (01): : 1 - 48