scholarly journals Coordination and trade-offs among hydraulic safety, efficiency and drought avoidance traits in Amazonian rainforest canopy tree species

2018 ◽  
Vol 218 (3) ◽  
pp. 1015-1024 ◽  
Author(s):  
Louis S. Santiago ◽  
Mark E. De Guzman ◽  
Christopher Baraloto ◽  
Jacob E. Vogenberg ◽  
Max Brodie ◽  
...  
Keyword(s):  
Tree Species ◽  
Canopy Tree ◽  
Drought Avoidance ◽  
Trade Offs ◽  
Hydraulic Safety ◽  
Amazonian Rainforest ◽  
Canopy Tree Species

scholarly journals Large hydraulic safety margins protect Neotropical canopy rainforest tree species against hydraulic failure during drought

2019 ◽  
Vol 76 (4) ◽  
Author(s):  
Camille Ziegler ◽  
Sabrina Coste ◽  
Clément Stahl ◽  
Sylvain Delzon ◽  
Sébastien Levionnois ◽  
...  
Keyword(s):  
Tree Species ◽  
Turgor Loss Point ◽  
Canopy Tree ◽  
Hydraulic Failure ◽  
Xylem Vulnerability ◽  
Safety Margins ◽  
Hydraulic Safety ◽  
Dry Seasons ◽  
Canopy Tree Species ◽  
Embolism Resistance

Abstract Key message Abundant Neotropical canopy-tree species are more resistant to drought-induced branch embolism than what is currently admitted. Large hydraulic safety margins protect them from hydraulic failure under actual drought conditions. Context Xylem vulnerability to embolism, which is associated to survival under extreme drought conditions, is being increasingly studied in the tropics, but data on the risk of hydraulic failure for lowland Neotropical rainforest canopy-tree species, thought to be highly vulnerable, are lacking. Aims The purpose of this study was to gain more knowledge on species drought-resistance characteristics in branches and leaves and the risk of hydraulic failure of abundant rainforest canopy-tree species during the dry season. Methods We first assessed the range of branch xylem vulnerability to embolism using the flow-centrifuge technique on 1-m-long sun-exposed branches and evaluated hydraulic safety margins with leaf turgor loss point and midday water potential during normal- and severe-intensity dry seasons for a large set of Amazonian rainforest canopy-tree species. Results Tree species exhibited a broad range of embolism resistance, with the pressure threshold inducing 50% loss of branch hydraulic conductivity varying from − 1.86 to − 7.63 MPa. Conversely, we found low variability in leaf turgor loss point and dry season midday leaf water potential, and mostly large, positive hydraulic safety margins. Conclusions Rainforest canopy-tree species growing under elevated mean annual precipitation can have high resistance to embolism and are more resistant than what was previously thought. Thanks to early leaf turgor loss and high embolism resistance, most species have a low risk of hydraulic failure and are well able to withstand normal and even severe dry seasons.

Canopy tree species and openness affect foliar endophytic fungal communities of understory seedlings

2016 ◽  
Vol 32 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Saya Kato ◽  
Yu Fukasawa ◽  
Kenji Seiwa
Keyword(s):  
Tree Species ◽  
Fungal Communities ◽  
Canopy Tree ◽  
Canopy Tree Species

Urbanization decreases the extent and variety of leaf herbivory for native canopy tree species Quercus rubra, Quercus alba, and Acer saccharum

2019 ◽  
Vol 22 (5) ◽  
pp. 907-916 ◽  
Author(s):  
Sheila K. Schueller ◽  
Sophia Paul ◽  
Natalie Payer ◽  
Robin Schultze ◽  
M. Vikas
Keyword(s):  
Tree Species ◽  
Acer Saccharum ◽  
Quercus Rubra ◽  
Quercus Alba ◽  
Canopy Tree ◽  
Canopy Tree Species ◽  
Leaf Herbivory

Determinants of spatial patterns of canopy tree species in a tropical evergreen forest in Gabon

2019 ◽  
Vol 30 (5) ◽  
pp. 929-939 ◽  
Author(s):  
Nestor Laurier Engone Obiang ◽  
David Kenfack ◽  
Nicolas Picard ◽  
James A. Lutz ◽  
Pulchérie Bissiengou ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Tree Species ◽  
Evergreen Forest ◽  
Canopy Tree ◽  
Tropical Evergreen Forest ◽  
Canopy Tree Species

Size-related flowering and fecundity in the tropical canopy tree species, Shorea acuminata (Dipterocarpaceae) during two consecutive general flowerings

2007 ◽  
Vol 121 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Yoko Naito ◽  
Mamoru Kanzaki ◽  
Shinya Numata ◽  
Kyoko Obayashi ◽  
Akihiro Konuma ◽  
...  
Keyword(s):  
Tree Species ◽  
Canopy Tree ◽  
Canopy Tree Species

Regeneration of canopy tree species at five sites in West African moist forest

1996 ◽  
Vol 84 (1-3) ◽  
pp. 61-69 ◽  
Author(s):  
Lourens Poorter ◽  
Frans Bongers ◽  
Renaat S.A.R. van Rompaey ◽  
Maarten de Klerk
Keyword(s):  
Tree Species ◽  
West African ◽  
Canopy Tree ◽  
Moist Forest ◽  
Canopy Tree Species ◽  
African Moist Forest

Individual Canopy-tree Species Effects on Their Immediate Understory Microsite and Sapling Community Dynamics

Biotropica ◽  
2011 ◽  
Vol 43 (5) ◽  
pp. 572-581 ◽  
Author(s):  
Nancy R. Mejía-Domínguez ◽  
Jorge A. Meave ◽  
Carlos Díaz-Ávalos ◽  
Edgar J. González
Keyword(s):  
Tree Species ◽  
Community Dynamics ◽  
Canopy Tree ◽  
Species Effects ◽  
Tree Species Effects ◽  
Canopy Tree Species
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