Báo cáo lâm nghiệp: "Interactive effects of drought and pathogens in forest trees" docx

... approach has proved very interest- ing and useful in the case of complex decline syndromes where multiple abiotic (including drought) and biotic (pathogens and insects) factors are involved [80, 85,106, ... PROCESSES AND MECHANISMS Theoretically, three main types of drought- disease interac- tion can be expected: – A direct effect of drought on pathogens; – Indirect effe...

Ngày tải lên: 07/08/2014, 16:20

... scanner and the first thin- ning time (1985) was verified by counting 18 annual rings (years) from bark. In this way the starting point of the wood zone after thin- ning was determined using an ... practice of silviculture: applied forest ecology, Chapter 3: The response of individual trees to thinning and pruning, Wiley and Sons Inc., New York, 1996. [50] Smith J.H.G., In uenc...

Ngày tải lên: 07/08/2014, 16:21

... discussed in the light of current knowledge and theories of interactions between drought and insects. We investigated the direct effects of drought on life history traits and indirect effects through physiological ... populations in the context of this exceptional event. Observations of changes in population levels of the main European forest insect pests durin...

Ngày tải lên: 07/08/2014, 16:20

... Timing and intensity of precommercial thinning in Pinus sylvestris stands. Scandi- navian Journal of Forest Research, 19: 142–151. V A. 2004: Dendroclimatological research of Scots pine ... resistance of pine stands to drought.  e dependence of drought resistance on the geograph- ical location of pine provenances was not found in Poland (P, M 19...

Ngày tải lên: 07/08/2014, 10:21

... positive effect on pine growth [7,24], may increase these natural inputs in two different ways: (i) by increasing the abundance and biomass of N 2 -fixing shrubs [3]; and (ii) by increasing the N 2 fixation rate ... Saint-André L., Marlet S., Bouillet J.P., Nutrient cycling in a clonal stand of Eucalyptus and an adjacent savanna ecosystem in Congo. 3. Input- ouput budgets and co...

Ngày tải lên: 07/08/2014, 16:21

... conditions of long-term forest land, 50-year-old afforestation and 10-year-old afforesta- tion in terms of properties of both upper and deeper layers. e topsoil of both long-term forest land and 50-year-old ... including related plant and animal species. However these soils were not left intact being converted into agricultural land; addition of both nutrients and...

Ngày tải lên: 07/08/2014, 10:21

... under forest stand and in forest stand gap (J et al. 1997). Beech trees growing in the shade exhibited significantly higher concentrations of phosphorus and potassium. A similar trend of ... of a range of parameters depending on the size, location, and character of gaps in forest stands (see details in R 1990; F et al. 1997, 1999, etc.). e resul...

Ngày tải lên: 07/08/2014, 10:22

Ngày tải lên: 07/08/2014, 16:20

... evaluations. Parents and their cloned offspring were ranked on PBVs from BM and simpler models, and the best individuals (i.e. 25% of all parents and 5% of all cloned offspring) were compared to ... effects of clones within full-sib fami- lies, and e is a vector of random residual terms. X, Z 1 , Z 2 and Z 3 are known incidence matrices relating the observations in y t...

Ngày tải lên: 08/08/2014, 00:21

... infection of cor- tex and vascular tissues, resulting in a decline of the spruce seedlings. Quite often the cell structure of cortex and vas- cular tissues was destroyed and ... be- havior against various Cylindrocarpon destructans strains in paired culture test series. Microfungi in the mycorrhizae Infection of mycorrhizae of the unlimed s...

Ngày tải lên: 09/08/2014, 04:20