Changes in drought response strategies with ontogeny in Quercus rubra: implications for scaling from seedlings to mature trees

Oecologia ◽  
2000 ◽  
Vol 124 (1) ◽  
pp. 8-18 ◽  
Author(s):  
J. Cavender-Bares ◽  
F. A. Bazzaz

2015 ◽  
Vol 35 (5) ◽  
pp. 453-469 ◽  
Author(s):  
A. R. Ambrose ◽  
W. L. Baxter ◽  
C. S. Wong ◽  
R. R. Naesborg ◽  
C. B. Williams ◽  
...  


2019 ◽  
Vol 9 (12) ◽  
pp. 7047-7056 ◽  
Author(s):  
Joel O. Abraham ◽  
Gareth P. Hempson ◽  
A. Carla Staver


2021 ◽  
Author(s):  
Benjamin R Lee ◽  
Inés Ibáñez

Climate change is projected result in higher frequencies of drought events across the world and lead to reduced performance in many temperate tree species. However, many studies in this area focus specifically on adult tree drought responses and overlook how trees in other age classes might differ in their vulnerability. Evidence shows that seedling drought response can differ from that of adults and furthermore that demographic performance in the seedling age class will have disproportionately strong effects on the assembly dynamics of future forests, together suggesting that understanding seedling drought responses will be critical to our ability to predict how forests will respond to climate change. In this study, we measured four indices of hydraulic response to drought (leaf water potential, photosynthetic capacity, non-structural carbohydrate concentration, and hydraulic conductivity), as well as interaction effects with shade treatments, for seedlings of two temperate tree species that differ in their adult drought response: isohydric Acer saccharum and anisohydric Quercus rubra . We found a strong isohydric response in A. saccharum seedlings that included conservation of leaf water potentials (> -1.8 MPa) and reductions in non-structural carbohydrate concentrations consistent with reduction of stomatal conductance. Quercus rubra seedlings were able to survive to more negative water potentials, but only rarely, and they showed a similar reduction in photosynthetic capacity as was found for A. saccharum . Our results suggest that, although Q. rubra seedlings display some anisohydric responses to drought, they are more isohydric than adults. Both species seem to be relatively similar in their vulnerability to drought despite the differences predicted from adult drought response, and our results suggest that seedlings of both species will be similarly vulnerable to future drought events.



2018 ◽  
Vol 38 (5) ◽  
pp. 655-657 ◽  
Author(s):  
Chris J Blackman


2012 ◽  
Vol 197 (3) ◽  
pp. 862-872 ◽  
Author(s):  
Patrick J. Mitchell ◽  
Anthony P. O'Grady ◽  
David T. Tissue ◽  
Donald A. White ◽  
Maria L. Ottenschlaeger ◽  
...  


Oecologia ◽  
2020 ◽  
Vol 194 (1-2) ◽  
pp. 221-236
Author(s):  
Bruno Cruz de Souza ◽  
Ellen Cristina Dantas Carvalho ◽  
Rafael S. Oliveira ◽  
Francisca Soares de Araujo ◽  
André Luiz Alves de Lima ◽  
...  


1996 ◽  
Vol 91 (3) ◽  
pp. 317-323 ◽  
Author(s):  
L.J. Samuelson ◽  
J.M. Kelly ◽  
P.A. Mays ◽  
G.S. Edwards




1981 ◽  
Vol 113 (5) ◽  
pp. 449-451 ◽  
Author(s):  
G. G. Grant ◽  
D. Frech ◽  
L. MacDonald ◽  
B. Doyle

The oak leaf shredder, Croesia semipurpurana (Kearfott), has been a particularly persistent pest of red oak, Quercus rubra, in southern Ontario for several years. It is capable of completely defoliating mature trees leading either to increased susceptibility to disease or mortality. In 1980 about 800 ha in southern Ontario required spraying with Orthenem insecticide (Howse and McDowall 1980). The development of a sex pheromone lure for the oak leaf shredder would be valuable for survey purposes, post-insecticidal spray analysis of adult survival in treated plots, and for potential direct control by means of the disruption technique. Recently mixtures of (E)-11-tetradecenal (E11-14:AL) and Z11-14:AL in the ratios of 80:20 to 90:lO were found to be attractive to male moths (Weatherston et al. 1978). A local outbreak of oak leaf shredder in Sault Ste. Marie afforded an opportunity to determine the insect's response to modifications of the aldehyde blend in order to improve the efficiency of pheromone trapping of this species.



2017 ◽  
Vol 178 (4) ◽  
pp. 313-319 ◽  
Author(s):  
M. Shane Heschel ◽  
Kathryn Dalton ◽  
Marley Jamason ◽  
Ashley D’Agnese ◽  
Lauren G. Ruane


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