Báo cáo lâm nghiệp: "Phytophthora cinnamomi and oak decline southern Europe Environmental constraints including climate change" ppt
Báo cáo lâm nghiệp: "Phytophthora cinnamomi and oak decline southern Europe. Environmental constraints including climate change" ppt
... Review article Phytophthora cinnamomi and oak decline in southern Europe. Environmental constraints including climate change CM Brasier Forest Research Station, ... timber resource. The oak savannah woodlands and maquis of southern and Mediterranean Europe contain evergreen oak species such as Q suber, Q ilex and Q coccifera overlapping ....
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: " Zygotic embryogenesis and empty seed formation in European larch (Larix decidua Mill.)" pptx
... to unfavourable environmental conditions and pests [35]. Despite the limited natural distribution, it is a frequent subject of intro- duction and breeding programmes over Europe and overseas [8, ... embryogenesis could contribute to understanding some mechanisms of unsound seed formation in European larch. 2. MATERIALS AND METHODS Female strobili of European larch were collected i...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp: "Canopy structure and spatial heterogeneity of understory light in an abandoned Holm oak woodland" pps
... for the Holm oak woodland studied. Maps represent indirect site factor (ISF, A and C) and direct site factor (DSF, B and D) for either the shrub layer (A and B) or the herb layer (C and D). The ... temperate and tropical forests (e.g. [8]). The present study explores the effect of land use change on the canopy structure and the understory light of a Holm oak woodland in centr...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Composition, distribution and supposed origin of mineral inclusions in sessile oak wood – consequences for microdensitometrical analysis" ppsx
... transport and storage of water, minerals and assimilates, as in sapwood and earlywood, to mechanical sup- port and protection against xylophagous attacks or decay by micro-organisms, as in heartwood and ... were compared to literature data collected by Hägglund [7] and Meerts [15] for pedunculate oak (Q. robur L.) and sessile oak heartwood and sapwood ashes, as listed in T...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Dendrochronology of pedunculate oak (Quercus robur L.) in an old-growth pollarded woodland in northern Spain: establishment patterns and the management history" ppt
... trees in Southern and Northern Tragamón. Oak pollarding in 1806 affected the southernmost extreme of South- ern Tragamón, and the north-central area of Northern Trag- amón. On the other hand, oaks ... pedunculate oak (Quercus robur L.): < 50 years, 150–200 years old, and 250–500 years old. Juveniles and trees 200–299 years were found to be clumped and spatially segregated f...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp: "Modelling height and diameter growth of dominant cork oak trees in Spain" ppt
... intense pruning [8] and increased cork oak decline (“seca”) [27]. Cork oak stands in Spain can be differentiated into open cork oak woodlands (low tree density, “dehesas” ) and cork oak for- ests (higher ... of Spanish cork oak stands) and produce 48 000 t of cork, which corresponds to 54% of the Spanish cork production [27, 41]. Cork oak forests are mainly found in Catalo...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "Stomatal conductance and xylem-sap abscisic acid (ABA) in adult oak trees" pdf
... evolution of water transfer in a mature oak stand (Quercus petraea: seasonal evolution and by Harris and Outlaw (1991) and Correia and Pereira (1994) among many others. Nevertheless, ... Har- tung and Slovik, 1991; Khalil and Grace, 1993), and to correlate rather well with stom- atal conductance in many cases (Tardieu and Davies, 1992; K...
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: " Rubisco activity and mitochondrial malate oxidation in pedunculate oak (Quercus robur L) seedlings grown under present and elevated atmospheric CO concentrations 2" pps
... that found in the sugars and nitrogen concentrations of the leaves. MATERIALS AND METHODS Plant material and growth conditions Acorns of pedunculate oak (Quercus robur L) were ... Studies of some respiratory enzymes in foliar organs and root systems of spruce and oak trees. Relation with forest decline. In: Air Pollution Research Report, Vol 1...
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: " Pointer years and growth in Turkey oak (Quercus cerris L) in Latium (central Italy). A dendroclimatic approach" docx
... (Chalabi and Serre-Bachet, 1981) and articles deal- ing with the same subject have been pub- lished by Janous and Bartak (1991), Jaro and Tatraaljai (1984), Babos (1986) and Raev ... deciduous oak found in the landscape we studied. It grows in pure or mixed stands with occasional elements of Holm oak (Q ilex) and cork -oak woods (Q s...
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: "Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns" docx
... 2004, 2005a,b) and B et al. (1997) in Bohemia and C (1995a), C and Z (1995), Š (1995a, 1997, 1998, 1999a, 2003), Š and H (1995), H and V (2002) ... 1999b), Š and H (1994), T and L (1986) and Z (2005c). e flight activity of neuropteroid insects was studied by Z (1984a,b) in one locality o...
Ngày tải lên: 07/08/2014, 03:22