Báo cáo lâm nghiệp: "SHORT COMMUNICATION The use of cotyledon proteins to assess the genetic diversity in sweet holm oak" potx

... spread in the Mediterranean basin. In Spain, few studies on the genetic variability of this species have been displayed. Storage seed proteins are a useful tool in the evaluation of the genetic ... 526–531 The aim of the present study was to evaluate cotyledon storage proteins as markers of the genetic diversity in sweet holm oak. MATERIAL AN...

Ngày tải lên: 07/08/2014, 10:22

... of the forest two decades after harvesting. By initially decreasing over- storey density and basal area, canopy openings created by logging triggered a rapid increase in recruitment into the ... Simpson’s diversity index (S) and Shannon’s diversity index (H’) for seedlings, saplings and overall trees were greater in the logged forest than in the primary forest, but...

Ngày tải lên: 07/08/2014, 03:22

... filled with insect Kaissling saline. The recording electrode was carefully in- serted into the distal edge of the antennal club and the indifferent elec- trode into the basal scape of the same antenna. ... applied to a filter paper strip (5×50 mm) and the solvent allowed to evaporate before use. The filter paper was then inserted into a Pasteur pipette. The tip of...

Ngày tải lên: 07/08/2014, 16:20

... height of the stems; mean and minimum distance from the ground to the top of the crown; total basal area (adding together the basal area of all stems); and equivalent di- ameter of each individual ... before the fire. On the other hand, for the height of the dominant resprout, in 6 out of 13 species there was a positive relationship with the pre-fire height...

Ngày tải lên: 07/08/2014, 16:21

... of the squared diameter and the length of the branch beginning at the base of the segment, a proxy of the volume of that part of the branch, as the auxiliary variable. Each path was terminated ... effects of the choice of the auxiliary variable, of the deletion of segments, and of the stratification of the tree crown on the sampling error w...

Ngày tải lên: 07/08/2014, 03:22

... (without the ending and often extended hairs), metatarsal length (LTp) from the calcaneal joint to the tip of the hoof, ear length (LA) from the root of the ear to the tip, and height at the withers ... as the distance from the tip of the fore leg to the highest point at the withers. Weight was deter- mined according to circumstances: (i) the whole...

Ngày tải lên: 07/08/2014, 10:21

... termination at the beginning of autumn. e height growth was evalu- ated according to the parameters of all living fir indi- viduals in 2007 and according to 20% of the highest individuals to avoid ... dynamics of the height growth of the silver fir experimental plantings was evaluated on the basis of the results of the measurements of all trees liv- i...

Ngày tải lên: 07/08/2014, 10:22

... consideration, expressed in terms of percentage. These impact factors were then used to find the expansion factor category introducing the largest variability in the calculation of the total C-stock. 3. RESULTS 3.1. ... Wallonia). Besides the difference in standing stock, the choice of the BEFs s.l. used for the carbon stock calculation explains the dif- ferenc...

Ngày tải lên: 08/08/2014, 00:22

... during spring of the first growing season and up to the following winter, descending to 11% during the next season (very dry). In the UN, by contrast, SM-0 never exceeded 28%, descending to 5% ... in number of indigenous people that inhabited the region and the beginning of European settlement. This frequency peaked at the end of the XIXth century, and start...

Ngày tải lên: 08/08/2014, 00:22

... accumulations on the forest floor are often viewed as detrimental to conifer seedling survival because they are prone to drying and prevent the root systems of the seedlings from quickly reaching mineral soil ... although leaching was minimized by watering to field capacity three times a week [55]. 2.4. Plant biomass and chemical analysis At the beginning of October, in the...

Ngày tải lên: 08/08/2014, 00:22