scholarly journals A comparison of hydraulic architecture in three similarly sized woody species differing in their maximum potential height

2015 ◽  
Vol 35 (7) ◽  
pp. 723-731 ◽  
Author(s):  
Katherine A. McCulloh ◽  
Daniel M. Johnson ◽  
Joshua Petitmermet ◽  
Brandon McNellis ◽  
Frederick C. Meinzer ◽  
...  
Keyword(s):  
Woody Species ◽  
Hydraulic Architecture ◽  
Potential Height

scholarly journals Hydraulic architecture and water relations of several species at diverse sites around Sydney

2004 ◽  
Vol 52 (4) ◽  
pp. 509 ◽  
Author(s):  
Kate McClenahan ◽  
Catriona Macinnis-Ng ◽  
Derek Eamus
Keyword(s):  
Water Relations ◽  
Root Biomass ◽  
Woody Species ◽  
Leaf Water ◽  
Hydraulic Architecture ◽  
Evaporative Demand ◽  
Sapwood Area ◽  
Huber Value ◽  
Percentage Loss ◽  
Transverse Area

Seasonal comparisons of leaf water potential, root biomass, hydraulic architecture, xylem embolism and xylem dimensions were made for eight woody species in four diverse habitats (mangroves, coastal heathland, ridge-top woodland and river-flat woodland). In most comparisons, pre-dawn and minimum leaf water potentials were lower in winter than in summer, a result attributed to lower rainfall and a smaller root biomass in winter than in summer. Branch hydraulic conductivities (per unit transverse area, sapwood area or leaf area) were generally larger in summer than in winter across all species in all habitats. An inverse relationship between Huber value and conductivity was observed across all four habitats. Increased solar radiation and evaporative demand in the summer was associated with an increased percentage loss of xylem conductance arising from embolism, compared with winter. These results are discussed in the context of patterns and relationships among water relations, microclimate and hydraulic architecture.

scholarly journals Water relations and hydraulic architecture in Cerrado trees: adjustments to seasonal changes in water availability and evaporative demand

2008 ◽  
Vol 20 (3) ◽  
pp. 233-245 ◽  
Author(s):  
Sandra J. Bucci ◽  
Fabian G. Scholz ◽  
Guillermo Goldstein ◽  
Frederick C. Meinzer ◽  
Augusto C. Franco ◽  
...  
Keyword(s):  
Water Potential ◽  
Water Relations ◽  
Seasonal Changes ◽  
Soil Water Potential ◽  
Woody Species ◽  
Dry Season ◽  
Hydraulic Architecture ◽  
Wet Season ◽  
Evaporative Demand ◽  
Water Deficits

We determined adjustments in physiology and morphology that allow Neotropical savanna trees from central Brazil (Cerrado) to avoid water deficits and to maintain a nearly constant internal water balance despite seasonal changes in precipitation and air saturation deficit (D). Precipitation in the study area is highly seasonal with about five nearly rainless months during which D is two fold higher compared to wet season values. As a consequence of the seasonal fluctuations in rainfall and D, soil water potential changes substantially in the upper 100 cm of soil, but remains nearly constant below 2 m depth. Hydraulic architecture and water relations traits of Cerrado trees adjusted during the dry season to prevent increasing water deficits and insure homeostasis in minimum leaf water potential ψL and in total daily water loss per plant (isohydry). The isohydric behavior of Cerrado trees was the result of a decrease in total leaf surface area per tree, a strong stomatal control of evaporative losses, an increase in leaf-specific hydraulic conductivity and leaf hydraulic conductance and an increase in the amount of water withdrawn from internal stem storage, during the dry season. Water transport efficiency increased in the same proportion in leaves and terminal stems during the dry season. All of these seasonal adjustments were important for maintaining ψL above critical thresholds, which reduces the rate of embolism formation in stems and help to avoid turgor loss in leaf tissues still during the dry season. These adjustments allow the stems of most Cerrado woody species to operate far from the point of catastrophic dysfunction for cavitation, while leaves operate close to it and experience embolism on a daily basis, especially during the dry season.

scholarly journals The trade-off between safety and efficiency in hydraulic architecture in 31 woody species in a karst area

2011 ◽  
Vol 31 (8) ◽  
pp. 865-877 ◽  
Author(s):  
D.-Y. Fan ◽  
S.-L. Jie ◽  
C.-C. Liu ◽  
X.-Y. Zhang ◽  
X.-W. Xu ◽  
...  
Keyword(s):  
Woody Species ◽  
Karst Area ◽  
Hydraulic Architecture ◽  
Trade Off

Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species

Oecologia ◽  
2009 ◽  
Vol 160 (4) ◽  
pp. 631-641 ◽  
Author(s):  
Sandra J. Bucci ◽  
Fabian G. Scholz ◽  
Guillermo Goldstein ◽  
Frederick C. Meinzer ◽  
Maria E. Arce
Keyword(s):  
Soil Water ◽  
Water Availability ◽  
Woody Species ◽  
Soil Water Availability ◽  
Rooting Depth ◽  
Hydraulic Architecture

Conservation Priorities for Woody Species Used by a Quilombo Community on the Coast of Northeastern Brazil

2019 ◽  
Vol 39 (1) ◽  
pp. 158
Author(s):  
Fernando Vieira Rocha ◽  
Rita Baltazar de Lima ◽  
Denise Dias da Cruz
Keyword(s):  
Woody Species ◽  
Northeastern Brazil ◽  
Conservation Priorities

Diversité floristique spontanée des plantations de café et de cacao dans la forêt classée de Monogaga, Côte d'Ivoire | Spontaneous floristic diversity of cocoa and coffee plantations in the classified forest of Monogaga, Côte d'Ivoire (reviewed paper)

2006 ◽  
Vol 157 (2) ◽  
pp. 31-36 ◽  
Author(s):  
Constant Yves Adou Yao ◽  
Edouard Kouakou N'Guessan
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Diversity Index ◽  
Agricultural Practices ◽  
Woody Species ◽  
Secondary Forests ◽  
Cote D’Ivoire ◽  
Coffee Plantations ◽  
Côte D'ivoire ◽  
High Tree Density

The inventory and the analysis of the woody species preserved in the different categories of cocoa and coffee plantations showed that they are relatively diversified (presence of endemic, rare and threatened species). They also preserved high tree density and high basal areas. The young plantations are especially diversified. Their number of species,density and basal areas and diversity index are similar to those of the neighbouring old growth and secondary forests. Older plantations display a sharp decline of diversity over time. Agricultural practices in the region represent a threat in the medium term to the preservation of biodiversity.

Effects of human disturbance on understory woody species composition and diversity in fengshui forests

2009 ◽  
Vol 17 (5) ◽  
pp. 458 ◽  
Author(s):  
Lü Hao-rong ◽  
Liu Song-song ◽  
Zhu Jian-yun ◽  
Ye Yong-chang ◽  
Chen Hong-yue ◽  
...  
Keyword(s):  
Species Composition ◽  
Human Disturbance ◽  
Woody Species

Physiological dormancy in seeds of tropical montane woody species in Hawai`i

2020 ◽  
Author(s):  
Carol C. Baskin ◽  
Jerry M. Baskin ◽  
Alvin Yoshinaga ◽  
Dustin Wolkis
Keyword(s):  
Woody Species ◽  
Physiological Dormancy
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