Báo cáo lâm nghiệp: "Impact of drought and Hypoxylon mediter

Báo cáo lâm nghiệp: "Impact of drought and Hypoxylon mediterraneum on oak decline in the Mediterranean region" ppt

... of Original article Impact of drought and Hypoxylon mediterraneum on oak decline in the Mediterranean region A Vannini R Valentini N Luisi 3 1 Department of Plant Protection; 2 ... p Oak SW, Starkey DA, Dabney JM (1988) Oak decline alters habitat in southern upland forest. Proceed- ings of the annual conference of the Southeast...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: " Impact of drought and leaf development stage on enzymatic antioxidant system of two Populus deltoides × nigra clones" potx

... class of molecules during drought [10]. The objective of the present investigation was to focus on the response of some of the leaf enzymatic antioxidant system (SOD, catalase and peroxidase) in ... allowed identification of one Fe-SOD, one Mn-SOD and two Cu/Zn-SOD (Fig. 2A). In control conditions, main isoforms were Fe-SOD and Mn-SOD for both clones (Figs....

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Influence of fire and tree-fell on physiological parameters in Quercus ilex resprouts" potx

... conductivity (Kruger and Reich 1993), allowed leaf conductance to remain higher and constant throughout the growing season, even in the summer, in contrast to the original ... mineral content and leaf area (LA) determinations. Environmental conditions (inci- dent radiation [PAR], air and leaf temperature, vapor pressure deficit) during samp...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Responses of photosynthesis and stomatal conductance to atmospheric humidity in some mediterranean Abies specie" ppt

... further example of uncoupling between diffusional and mesophyll photosynthetic processes in response to increasing Aw: Pinus pinea seedlings, having a leaf diffusional struc- (Cowan and ... assessed, and the corre- sponding A(Ci) functions were determined, thus allowing the analysis of C0 2 assimilation in terms of mesophyll photosynthetic ca...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Stability of Norway spruce (Picea abies [L.] Karst.) stands in the Beskid Śląski and Beskid Żywiecki Mts. from the aspect of their nutrition status" pptx

... determine the stability of spruce stands in the areas of threat to forest stability in the Beskid Śląski and Beskid Żywiecki Mts. in the light of their nutrition. In 2002 samples of soil and of one- ... distribution of rain and snowfall in the Beskid Śląski Mts. and in the western part of the Beskid Żywiecki Mts. depends on the location o...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: " Influence of repeated defoliations by insects on wood increment in common oak (Quercus robur L)" pps

... dépérissement the floodplain stand presenting the highest ratios and most severe decreases, and the solonetz, the lowest ratios and limited decreases. CONCLUSION These investigations strongly ... plots. The health status of these trees had been monitored once a year since 1969-1973, including an interannual estimation by eye of the degree o...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Impact of summer drought on forest biodiversity: what do we know" ppt

... indirectly, with droughts promoting the occurrence and/ or increasing the intensity of other natural or anthropogenic pressures. One of the most striking examples is the dramatic increase of Mediterranean forest ... review examines the eﬀects of summer drought events only. Inten- sity [35,91], duration [30] and frequency [79] of droughts also in uence biodiversity,...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Amounts of throughfall and lysimetric water in a sub-mountain beech forest in the Kremnické vrchy Mts" ppt

... 0.05). e in uence of the cutting intervention on the water regime of plots was found less pronounced mainly in 1989 – probably due to the absorption eﬀect of the herbal synusia in the understorey ... result in an enormous eﬀort required for its restoration in the future. It is evident that the functioning of the individual ecosystems must be understood...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: " Influence of temperatures and precipitation on radial increment of Orlické hory Mts. spruce stands at altitudes over 800 m a.s.l" ppt

... and March of the year in question. e standard tree-ring chronology shows an obvious decrease in radial increments starting at the beginning of the 1970s and ending at the end of the 1980s. ... the year in question (Fig. 3). e standard regional tree-ring chronology shows a decrease in the radial increments starting at the beginning of the 1970s and...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Germination of acorns and development of oak seedlings (Quercus robur L.) following flooding" pot

... seeding and planting in hardwood ﬂoodplain forests along the Rhine, mostly verifying the hypotheses proposed in the introduction. How- ever, in contrast to the respective hypothesis, the germination ... seeding before the start of the ﬂood season in spring can increase the density of regeneration. On the other hand, the planting of seedlings is likely...

Ngày tải lên : 07/08/2014, 03:22

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