Carbon assimilation in oak (Quercus spp.) populations under acute and chronic high-temperature stress

Seasonal trends in photosynthetic parameters and stomatal conductance of blue oak (Quercus douglasii) under prolonged summer drought and high temperature.

Understanding seasonal changes in photosynthetic parameters and stomatal conductance is crucial for modeling long-term carbon uptake and energy fluxes of ecosystems. Gas exchange measurements of CO2 and light response curves on blue oak leaves (Quercus douglasii H. & A.) were conducted weekly throughout the growing season to study the seasonality of photosynthetic capacity (Vcmax) and Ball-Berr...

acute and chronic maxillary sinusitis (nonodontogenic infection)

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Depletion of Oak (Quercus spp.) Forests in the Western Himalaya: Grazing, Fuelwood and Fodder Collection

Decomposition and nutrient dynamics of oak Quercus spp . logs after five years of decomposition

Decomposition of oak Quercus spp. logs (25-35 cm diameter, 3 m long) was compared among log substrates in Oregon, Minnesota, Kansas and North Carolina during the first five years on the ground. Decomposition of whole logs (weighted by substrate) averaged 0.069 yr~' (±0.16 SD), but followed a 2-exponential model (k = 0.12 yr" year 1 and k = 0.06 yr" years 2-5), reflecting qualitative differences...

Low temperature during winter elicits differential responses among populations of the Mediterranean evergreen cork oak (Quercus suber).

Populations of cork oak (Quercus suber L.) were assessed for seasonal and inter-population variability in, and temperature responses of, the ratio between light-induced variable and maximum fluorescence of chlorophyll, Fv/Fm, considered a surrogate for the maximum photochemical efficiency of photosystem II (PSII). Seedlings from 10 populations throughout the distribution range of Q. suber in th...