Báo cáo lâm nghiệp: "Contribution to knowledge of Hylesinus fraxini (Panzer, 1779) (Coleoptera: Scolytidae) natural enemies from Northern Moravia (Czech Republic)" pdf

... 53 JOURNAL OF FOREST SCIENCE, 53, 2007 (Special Issue): 53–56 Contribution to knowledge of Hylesinus fraxini (Panzer, 1779) (Coleoptera: Scolytidae) natural enemies from Northern Moravia (Czech ... recorded. e most abundant parasitoid was Eurytoma morio Boheman, 1836 (44.1% from the total number of all reared parasitoids; 23.8% of the total mortal...

Ngày tải lên: 07/08/2014, 03:22

... 6215648902. Contribution to the knowledge of Clethrionomys glareolus populations in forests of managed landscape in Southern Moravia (Czech Republic) J. S Faculty of Forestry and Wood Technology, ... found in southern Moravian forests as exerted by the bank vole gnawing the stems of young trees. In controlled forests 40% of young o...

Ngày tải lên: 07/08/2014, 03:22

... respect to damage to forest stands. In the present paper, the population dynamics of As is described in larger forest complexes of southern Moravia depending on the biotope and food supply including ... (Apodemus sylvaticus) . Journal of Zoology (London), 198: 83–102. SUCHOMEL J., 2007. Contribution to the knowledge of Clethrionomys glareolus populatio...

Ngày tải lên: 07/08/2014, 03:22

... were included in the clusters together with trees from unthinned control plots 1c. Variability of growth response of pine stands to climate characteristic in relation to thinning Variability of ... thinned stands (variant 4t) showed the higher variability of diameter growth response in comparison with those from control stands. DISCUSSION  e respon...

Ngày tải lên: 07/08/2014, 10:21

... ad- vantages of such. MATERIAL AND METHODS To obtain D. schmidtii larvae it is recommended to simply beat the bottom branches of the food- plant up to 3 m above ground level. The larvae of this ... possibilities. (C) Degree of isolation of the population present on the site in relation to the natural range of the species. (D) Global assessment of...

Ngày tải lên: 07/08/2014, 10:21

... linked to the ability to sur- vive transplanting stress and to out-compete the growth of noxious grasses. Storage in dark conditions slowed down the recovery of growth and increased mortality after ... and sealed. The bags were stored in darkness for 4 and 6 days (4DD, 6DD) or in the shade for 4 and 6 days (4DS, 6DS). The two other treatments consisted...

Ngày tải lên: 08/08/2014, 00:22

... comparing Douglas-fir growth responses following complete control of woody vegetation (without control of herbaceous vegetation) to complete control of herbaceous vegetation (without control of woody ... a 2 ì 2 factorial with herbaceous control as one factor and woody control as the other factor using the data base that included woody- only control, h...

Ngày tải lên: 08/08/2014, 00:22

... importance of water to a plant lies in its role in cell ex- pansion, cooling of leaves, nutrient and carbon transport and photosynthesis. Poplars are thought to consume large amounts of water to ... growth range of the black poplar and their acclimatation to soil mois- ture. Fine sanding of the wood cores has also revealed the dis- tribution and dimensions of ves...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2006019 Original article Response to an ozone gradient of growth and enzymes implicated in tolerance to oxidative stress in Acer saccharum (Marsh.) seedlings Catherine G a,b * ,NadineC  c ,PaulW c , ... leading to a compromise be- tween maximizing aboveground growth and developing below ground growth to enhance t...

Ngày tải lên: 08/08/2014, 00:22

... late winter to early summer, and eat foliage, shoots and acorns of oaks in summer and autumn [20]. We have carried out two different studies in these rangelands to assess the effect of post-fire natural and ... Mediterranean oaks with contrasting leaf habit after a wildfire Josep Maria E * , Abdessamad H ,JavierR Centre de Recerca Ecològica i...

Ngày tải lên: 08/08/2014, 00:22

... analysis for tree FV1: (A) skeleton of the standing tree; (B) reconstruction of the tree shape and of the sampled discs; (C) disc measurements of tension wood; loca- tion of the pith (M), the disc ... occurrence of compres- sion wood. The objective of this paper is to present the method devel- oped in our laboratory to measure the geometry of...

Ngày tải lên: 08/08/2014, 01:21

... 645655 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003057 Original article Performance and physiology of large containerized and bare-root spruce seedlings in relation to scarification and competition ... In Québec (Canada), the use of large planting stock is being applied in combination with scarification, since herbicide use is forbidden in pu...

Ngày tải lên: 08/08/2014, 01:21

... ultrapure water as eluant. 2.4.3. Amino-acid analysis Extraction was carried out at 4 °C. 40 μL of an internal standard (α-butyric acid) were added to samples ... of primary leaves), of the tap root (TR) and of the three longest lateral roots (LR; as an assessment of the length of the lat- eral roots) of each...

Ngày tải lên: 09/08/2014, 04:20

... than today. That warmth was maintained Photosynthesis and growth of present New Zealand forest trees relate to ancient climates B.J. Hawkins G.B. Sweet* School of Forestry, ... temperature and actual growing season temperature. New Zealand s forest tree species are ancient and they, or their closest ances- tors, have been a dominant...

Ngày tải lên: 09/08/2014, 04:20

... Weimar and Rothe, 1987). In this study, the extrac- tion of enzymes linked to malate metabo- lism, particularly those located in mito- chondria, was investigated in coniferous and ... pp. 281-313 3 Extraction and study of enzymes linked to malate metabolism in tree leaves D. Gerant, A. Citerne, C. Fabert P. Dizengremel Laboratoire...

Ngày tải lên: 09/08/2014, 04:20