Báo cáo lâm nghiệp: "How do lepidopteran seasonal guilds differ on some oaks (Quercus spp ) – A case study" pdf

... diversity across landscapes and regions: a hierarchical analysis of alpha, beta, and gamma diversity. American Naturalist, 162: 73 4–7 43. FEENY P., 1970. Seasonal changes in oak leaf tannins and ... laid in early spring. e second guild mainly consists of leaf miners (Stigmella spp. , Phyllonorycter spp. and How do lepidopteran seasonal guilds differ on some oaks...

Ngày tải lên: 07/08/2014, 10:22

... but a small area in the northern part (plots 8 and 9) was probably coppiced again 11 to 12 years later. The total basal area was 46 m 2 ha –1 and the standing volume (merchantable timber) 340 ... Pividori M., Costruzione di un diagramma selvicolturale per il bosco ceduo di castagno (Castanea sativa Mill .) della collina more- nica canavesana (TO), Monti e Boschi. 3 (199 5) 1...

Ngày tải lên: 08/08/2014, 00:22

... 420 t – average age of stand; d – the average diameter at breast height (cm); h – mean stand height (m); f – form factor; v – average tree volume (m 3 ); N – number of trees per 1 ha; G – basal area ... 694 t – average age of stand; d – the average diameter at breast height (cm); h – mean stand height (m); f – form factor; v – average tree vo...

Ngày tải lên: 07/08/2014, 10:21

... Furunes 2 Abstract Introduction: Previous research in performance appraisal (PA) indicates that variation exists in learning and job motivation from performance appraisal between occupatio nal groups. This research evaluates ... subordinates perceived higher job motivation after performance appraisal than managers. Conclusion: Useful feedback, active participation and higher education are fun...

Ngày tải lên: 18/06/2014, 17:20

... comparative analysis between variants – Forest land, A orestation_10, A orestation_50 (see Fig. 2 for the explanation) and soil layers ( 0–1 0 cm – topsoil; 1 1–3 0 cm – underlying horizon) Mean ... e values of pH KCl, V (base saturation), and base cation concentrations are significantly higher in a group of young 10-years-old a orestation situated on formerly tilled...

Ngày tải lên: 07/08/2014, 10:21

... 92/43/EEC) on the conservation of natural habitats, and of wild fauna and flora. One of the goals of the directive is to maintain or restore, at favourable conservation status, fauna and flora of ... stemmata on sides of head (Lepidoptera larvae) 2. – Larva with more than 5 pairs of abdominal legs and with 1 stemma on sides of head larvae of Tenthredinidae. 2 ( 1) Larva wi...

Ngày tải lên: 07/08/2014, 10:21

... Dead seeds % Empty seeds % Abnormal germination % Energy (7 days) % Capacity (14 days) % Mean germ. time (days) 1981 1984 1987 1988 8 11 14 15 – – – – – – – – 98.0* 96.0* 92.0* 92.0* – – – – – – – – – – – – – – – – 1989 ... Simak M., Gustafsson A. , Chromosomenaberrationen in alternden Forstsamen [Chromosome Aberrations...

Ngày tải lên: 08/08/2014, 00:21

... des Billons) (Fig. 2) which was built in our laboratory and has certain similarities to a lathe. The log was main- tained between a fixed headstock and a moving tailstock mounted on slides and moved ... maintained at a chosen angu- lar position. An angular coder measured the latter. Moreover, a laser distancemeter was mounted on a longitudinal 1-axis robot ensuring that th...

Ngày tải lên: 08/08/2014, 01:21

... (FH), Ormosia xylocarpa (OX) and Castanopsis kawakamii (CK), and an adjacent natural forest of Castanopsis kawakamii (NF): ( 1) fine-root biomass, distribu- tion and seasonal patterns; and ( 2) ... (a –1 ) = Annual root production (Mg ha –1 a –1 ) / Mean root biomass (Mg ha –1 ). Mean residence time (a) = Mean root biomass (Mg ha –1 ) / Annual root...

Ngày tải lên: 08/08/2014, 01:22

... patterns. A poplar plant adapts its absolute growth rate to high irradiance by a gradually faster pro- duction of proportionally larger primordia at its apex. At the same ... growth rate of a branch adapts in a way similar to that of nitrate dosage. As the availability of (reduced) nitrate in the plant becomes limiting, the expansion of th...

Ngày tải lên: 09/08/2014, 04:20