Báo cáo lâm nghiệp: "Impact of population dynamics of white

Báo cáo lâm nghiệp: "Impact of population dynamics of white mistletoe (Viscum album ssp. abietis) on European silver fir (Abies alba)" pot

... 10.1051/forest:2003072 Original article Impact of population dynamics of white mistletoe (Viscum album ssp. abietis) on European silver fir (Abies alba) Konrad Philipp NOETZLI*, Beat MÜLLER, Thomas ... stand of European silver fir (Abies alba) in the Rhine Valley (Canton of Grisons, Switzerland), 27 trees with heavy infestation of white mist...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp:"Stand history and its consequences for the present and future dynamic in two silver fir (Abies alba Mill.) stands in the high Pesio Valley (Piedmont, Italy)" potx

... differing in exposition and shade-intolerant broadleaf composition, seem to represent two consecutive phases of one single evolutionary process typical of eutrophic silver fir forests in the montane belt: ... composition of the forest are therefore the result of anthropogenic activity, indeed, the presence of pure silver fir stands in the past were the result of human inte...

Ngày tải lên : 08/08/2014, 01:21

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

... than non-diapausing ones [74, 113]. Information on the eﬀects of the 2003 drought on forest insect populations can be found in [86]. To date, data on the short- and mid-term consequences of drought ... impact of the plantation of drought-tolerant tree species and of the reduction of the rotation length [20]. 4. Long-term monitoring programs should be continued or developed,...

Ngày tải lên : 07/08/2014, 16:20

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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

... 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. 2A and 2B). In response to water deficit, ... used in all experiments. During January 2001, 24 one-month-old rooted cuttings of each clone were repotted into 4-l pots containing a mixture of blond peat, brown peat, horse manur...

Ngày tải lên : 08/08/2014, 00:22

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

... precipitation did not change signifi- cantly compared with the previous one, a modification of annual distribution of precipitation and, in particular, a strong reduction of ... exudations, reduced ring growth and tree mortality. On cross sections of the stem of declining trees, it is common to observe occlusion of xylem vessels and dar...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Improving RBS estimates – effects of the auxiliary variable, stratification of the crown, and deletion of segments on the precision of estimate" pps

... both on the cumulated value of the target variable beyond a certain stage or segment and the conditional (and concomitantly, on the unconditional) selection prob- ability of the segments of ... 2001). During this period, there have been only smaller conceptional contributions, such as the introduction of the terms conditional and unconditional probabilities (V et al...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Contribution to the knowledge of Clethrionomys glareolus populations in forests of managed landscape in Southern Moravia (Czech Republic)" pot

... e population dynamics of bank voles. Symposia of the Zoological Society of London, 55: 277–313. ANDRZEJEWSKI R., 1975. Supplementary food and the winter dynamics of bank vole populations. ... 2005–2006. The only effective prevention against damage seems to be the reliable prediction of population densities by pest species monitoring and early plantation protection. D...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Occurrence, biology and harmfulness of Galerucella lineola (F.) (Coleoptera, Chrysomelidae)" pps

... exclusively on the abaxial face of leaves. Sporadically, eggs occur on the bark of young shoots (e.g. in osier plantations on the bark of S. vimina- lis). Groups of eggs laid on bark consist only of ... frequency of copulation and the period of copulation of imagoes of this year’s generation. Egg laying Fertilized females of G. lineola lay eggs on the abax- i...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Contribution to the knowledge of Apodemus sylvaticus populations in forests of the managed landscape of southern Moravia (Czech Republic)" potx

... response of changes in the As population abundance is based on the combination of functional and numerical response of all occurring species of predators (K 1985). Nevertheless, under conditions ... reproduction could be enabled by the lower abundance of competitive A. ﬂavicollis in RB in consequence of the lower pressure on food sources. e ﬂuctuation of popu...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Growth and physiological state of beech seedlings grown in a nursery in diﬀerent light conditions" docx

... light conditions will infl uence their performance.  e measurement of ETR is used mainly for its close relationship with the CO 2 assimilation rate. Under certain conditions the electron fl ow ... ca- pacity is reduced on the level of the light phase of photosynthesis, i.e. in processes of the capture and transmission of radiant energy quanta.  e long- term eff ect of exces...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Impact of population dynamics of white mistletoe (Viscum album ssp abietis) on European silver fir (Abies alba)" pot

Báo cáo lâm nghiệp: "Impact of population dynamics of white mistletoe (Viscum album ssp. abietis) on European silver fir (Abies alba)" pot

Báo cáo lâm nghiệp:"Stand history and its consequences for the present and future dynamic in two silver fir (Abies alba Mill.) stands in the high Pesio Valley (Piedmont, Italy)" potx