Báo cáo lâm nghiệp: " Dendrochronological insights JR Pilcher into past oak growth" potx

... in Den- drochronology. Springer-Verlag, Berlin Review article Dendrochronological insights into past oak growth JR Pilcher Palaeoecology Centre, Queens University of Belfast, Belfast, ... Institute, Warsaw, 117-124 Pilcher JR, Baillie MGL, Schmidt B, Becker B ( 1984) A 72-year tree-ring chronology for western Europe. Nature 312, 150-152 Pilcher...

Ngày tải lên: 08/08/2014, 18:21

... (2006) 733–738 733 c  INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2006054 Original article New insights in the recognition of the European ash species Fraxinus excelsior L. and Fraxinus angustifolia ... and Gérard, unpublished results). This feature is common in forest tree species complexes like oaks, and can originate from a shared ancestral polymorphism or Article published by EDP Scie...

Ngày tải lên: 07/08/2014, 16:20

Ngày tải lên: 07/08/2014, 03:22

... assumed that seeds from oaks at higher elevations and rarely flooded areas of North American ripa- rian forests (upland oaks) have a higher sensitivity to flood than the oak species of the actual ... treatments. Sowing Acorns from all treatments were placed individu- ally into GL-II plant pots (diameter 5 cm, pot volume 270 cm 3 ) and pushed gently into the soil. e GL-II plant pots...

Ngày tải lên: 07/08/2014, 03:22

... inoculated discs were cultivated in sterilized Petri dishes (20cm in diam- eter) on fi lter paper soaked with deionized water at 20°C. Artifi cial radiation simulated daylight wave- length and intensity, ... by the pathogen while sustaining only insignifi cant yield losses, as compared with an infected intolerant cultivar. D (2003) showed that the link between resistance (expressed b...

Ngày tải lên: 07/08/2014, 10:21

... Until the 1960s, leasing contracts for the best pastures in the mu- nicipality of Cesana T. contained a clause obliging the holder to maintain the pasture by removing any stone pine seedling established. The ... because of the grazing and of the human anthropogenic removal. During the second one (1930–1960) the past heavy grazing followed by periods of moderate grazing favored the larch est...

Ngày tải lên: 07/08/2014, 16:20

... Finkeldey R., Genetic variation of Oaks (Quercus spp.) in Switzerland. 2. Genetics structures in “Pure” and “Mixed” forest of pedunculate oak (Q. robur L.) and sessile oak (Q. petraea (Matt.) Liebl.), ... between oaks species that are not closely related: Quercus suber and Q. ilex in Morocco, Mol. Ecol. 10 (2001) 2003–2012. [4] Boavida L.C., Silva J.P., Feijó J.A., Sexual reproduction in...

Ngày tải lên: 07/08/2014, 16:21

... “species composition” (oak- hazel /oak monoculture) and “inclination” (flat/steep) both Table II. Two-factorial ANOVA on the effects of species composition (oak monoculture /oak- hazel) and slope gradient ... Figure 1. Illustration of the experimental design: Mono1 = oak monoculture, 27°; Mix1 = oak- hazel; 25°, Mono2 = oak monoculture, 13°; Mix2 = oak- hazel, 14°. Hazel improves so...

Ngày tải lên: 08/08/2014, 00:21

... establish- ment in western Oregon silvopastures, Agroforest. Syst. 53 (2001) 292–290. [55] Suárez M.A., Vázquez F., Baselga P., Torres E., Cuevas S., Efectos de distintos tratamientos en vivero en el ... process which was per- formed in a stove at 70 ºC during 48 h. At the same time the AGB was divided into leaf biomass (LB) and stem biomass (SB). Later, these were weighed on precision scal...

Ngày tải lên: 08/08/2014, 00:22

... diameter, were used in order to adjust the container shape to the morphology of the root system of oak seedlings. Containers were filled with nutrient free sand. Nutrient supply was ensured by using ... climatic control. Temperature and air relative humidity were recorded with a thermohygrograph (JRI MINIDISQUE 165-00, Jules Richard Instrument, Argenteuil, France). Mean air temperature was...

Ngày tải lên: 08/08/2014, 01:21