scholarly journals Leaf hydraulic conductance, measured in situ, declines and recovers daily: leaf hydraulics, water potential and stomatal conductance in four temperate and three tropical tree species

2009 ◽  
Vol 29 (7) ◽  
pp. 879-887 ◽  
Author(s):  
D.M. Johnson ◽  
D.R. Woodruff ◽  
K.A. McCulloh ◽  
F.C. Meinzer
Keyword(s):  
Stomatal Conductance ◽  
Water Potential ◽  
Tree Species ◽  
Hydraulic Conductance ◽  
Tropical Tree ◽  
Leaf Hydraulic Conductance ◽  
Leaf Hydraulics ◽  
Tropical Tree Species

Co-ordinated performance of leaf hydraulics and economics in 10 Chinese temperate tree species

2016 ◽  
Vol 43 (11) ◽  
pp. 1082 ◽  
Author(s):  
Ying Jin ◽  
Chuankuan Wang ◽  
Zhenghu Zhou ◽  
Zhimin Li
Keyword(s):  
Resource Use ◽  
Tree Species ◽  
Eastern China ◽  
Hydraulic Conductance ◽  
Economic Traits ◽  
Leaf Economics Spectrum ◽  
Leaf Hydraulic Conductance ◽  
Leaf Hydraulics ◽  
Leaf Economics ◽  
Nutrient Traits

Exploring relationships between leaf hydraulics and economic traits is important in understanding the carbon–water coupling and in extending the leaf economics spectrum. In this study, leaf hydraulics, photosynthesis, structural and nutrient traits and photosynthetic resource use efficiency were measured for 10 temperate tree species in the north-eastern China. Leaf hydraulic conductance was positively correlated with photosynthetic traits, specific leaf area, leaf nitrogen concentration, photosynthetic water and nitrogen use efficiencies, suggesting co-ordination between leaf hydraulics and economic traits. Principal component analysis revealed that significant correlations existed among leaf hydraulic, photosynthetic and resource use traits (axis 1), and axis 2 was strongly associated with leaf structural and nutrient traits. The 10 species were distributed along the diagonal line between axis 1 and axis 2. Species displaying the ‘fast’ strategy tended to have higher photosynthetic rates, leaf hydraulic conductance and photosynthetic water and nutrient use efficiencies; however, they also had lower carbon investment and faced a greater risk of embolism. These findings indicate that leaf hydraulics, economics and resource uses together play an important role in determining species ecological strategies, and provide supports for the ‘fast–slow’ leaf economics spectrum.

Light sensitivity of shoot hydraulic conductance in five temperate deciduous tree species

2012 ◽  
Vol 39 (8) ◽  
pp. 661 ◽  
Author(s):  
Krõõt Aasamaa ◽  
Anu Sõber
Keyword(s):  
Stomatal Conductance ◽  
Water Potential ◽  
Water Use ◽  
Tree Species ◽  
Light Sensitivity ◽  
Hydraulic Conductance ◽  
Leaf Water ◽  
Deciduous Tree ◽  
Temperate Deciduous ◽  
Shoot Hydraulic Conductance

The light sensitivity of the shoot hydraulic conductance in five temperate deciduous tree species was measured using two methods to clarify the role of light sensitivity and the suitability of the methods used to study it. The light sensitivity measured using a method that included an interruption of ≤10 min in shoot light acclimation did not differ from that measured using a method with continuous illumination. The ‘noncontinuous light’ methods are suitable for measuring hydraulic conductance and its light response. Light sensitivity correlated with other leaf water traits as follows: positively with the ion-mediated increase in xylem hydraulic conductance; a relative decrease in the hydraulic conductance of the laminae in response to HgCl2; a relative change in stomatal conductance in response to changes in PAR intensity or atmospheric CO2 concentration, or to a decrease in air humidity or leaf water potential; and with instantaneous water use efficiency. The traits correlated negatively with shoot hydraulic conductance, stomatal conductance and relative increases in stomatal conductance in response to increases in leaf water potential. We suggest that high light sensitivity should be considered as one of the characteristics of conservative water use in trees. Low blue light increased shoot hydraulic conductance to a similar extent to moderate white light and twice as much as moderate red light. Blue light perception is important in the light sensitivity mechanism.

What is the relevance of smallholders’ agroforestry systems for conserving tropical tree species and genetic diversity in circa situm, in situ and ex situ settings? A review

2013 ◽  
Vol 22 (2) ◽  
pp. 301-324 ◽  
Author(s):  
Ian K. Dawson ◽  
Manuel R. Guariguata ◽  
Judy Loo ◽  
John C. Weber ◽  
Ard Lengkeek ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Tree Species ◽  
Agroforestry Systems ◽  
Tropical Tree ◽  
Ex Situ ◽  
Tropical Tree Species

Development and characterization of 15 microsatellite loci for Cariniana estrellensis and transferability to Cariniana legalis, two endangered tropical tree species

2008 ◽  
Vol 10 (4) ◽  
pp. 1001-1004 ◽  
Author(s):  
Marcela Corbo Guidugli ◽  
Tatiana de Campos ◽  
Adna Cristina Barbosa de Sousa ◽  
Juliana Massimino Feres ◽  
Alexandre Magno Sebbenn ◽  
...  
Keyword(s):  
Microsatellite Loci ◽  
Tree Species ◽  
Tropical Tree ◽  
Tropical Tree Species ◽  
Cariniana Legalis
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