Báo cáo lâm nghiệp: "Variations in growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L" pot
Báo cáo lâm nghiệp: "Variations in growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L" pot
... in relation to the possible origin of the variability in fungal growth and virulence, and to practical use of fungal growth on malt agar and in the phloem for screening and comparing the virulence ... growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L. François...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: "Variations in seed and seedling responses to water stress in three provenances of Eucalyptus camaldulensis Dehnh" pptx
... initial establishment and early growth of seed- lings from 3 provenances of E. camaldu- lensis were examined. Materials and Methods The 3 provenances of E. camaldulensis (Kathe- rine and Petford ... best and Katherine seedlings worst. These dif- ferences in establishment were associated (g Dwt/kg water) and by carbon discrimi- nation analysi...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: "Plasticity in growth, biomass allocation and root morphology in beech seedlings as induced by irradiance and herbaceous competition" pptx
... thin and densely ramified, with considerable variations among stands. Overall, herbaceous fine roots tended to be finer and more ramified in stands with high irradiance and abundant graminae in ... Scots pine woodlands in the study area [16]. All pine-dominated stands had similar mesic ground vegetation associating dicotyledons such as Galium or Fragaria spp. and gram- ina...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp:"Individual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east Spain" docx
... BAL competition index measuring the total basal area of larger trees; T, G and SI are stand age (years), basal area (m 2 ha –1 ) and site index (m) at an index age of 100 years, respec- tively. ... of larger trees) and stand-level (site, basal area and age) characteristics and their transformations as predictors. The pre- dicted variable was the five-year diameter grow...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes" pps
... biomass allocation in Mediterranean pines 91 Table III. Proportion of the variance due to treatment, population and treatment by population interaction in the intra-specific analysis and significance ... present, little information was available on the mor- phological changes induced by water stress during the initial developmental stages of Mediterranean pines and its var...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: " Managing diameter growth and natural pruning of Parana pine, Araucaria angustifolia (Bert.) O Ktze., to produce high value timber" ppt
... High concentrations of Parana pine are found in the Brazilian states of Rio Grande do Sul, Santa Catarina, and Paraná with lesser concentrations in São Paulo, Minas Gerais, Rio de Janeiro and in the Argentine ... natural pruning or with artificial pruning (at the age of 5 and 10 years at 40% of crown ratio) for Parana pine growing on site index of 30 (Schneider...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp: "Cavitation in trees and the stems hydraulic sufficiency of woody" doc
... on a stea- dy-state model of water flow through a branched catena, so no account was taken of the water storage capacity of leaves and stems or of the temporal dyna- mics ... non-steady-state model, the loss of leaf area was less (18%). As expected, water storage capacity of stems and leaves reduced the extremes in y at- tained...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: "Water relation characteristics and photosynthesis of saline-stressed seedlings of non-halophyte species" pot
... chloride are sequestered in cells and generate osmotic potential. O. asiaticus var. auran- tiacus maintained an almost constant osmotic potential, but increased the poten- tial at ... other 3 species. In O. asia- ticus var. aurantiacus, sodium concentra- tions in leaves increased as the salt level increased. The other 3 species maintained low...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: "Stand structure, competition and growth of Scots pine (Pinus sylvestris L.) in a Mediterranean mountainous environment" pptx
... occurring in a continental Mediter- ranean mountain area (in the Guadarrama range, Spain), i.e., an uneven-aged stand, a stand with oak (Quercus pyrenaica Willd.) understorey, a planta- tion, and a ... suggested a greater diameter and basal area growth of Scots pine in the uneven-aged stand than in the even-aged stand and the plan- tation. Additional resea...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: "Variations of construction cost associated to leaf area renewal in saplings of two co-occurring temperate tree species (Acer platanoides L. and Fraxinus excelsior L.) along a light gradient" doc
... and, absorbance was defined as the base-10 loga- rithm of the transmittance reciprocal [15]. Absorbance values were recorded on both adaxial and abaxial sides of the leaf and further added for a ... radiation above the canopy [1, 6, 11], GSF values were averaged over a period starting in May 1st and ending in August 31th. 2.3. Sampling and analysis Thirty saplings...
Ngày tải lên: 08/08/2014, 00:22