...
effect
of
water
stress
on
net
stand
productivity
(Monteny,
1987).
The
coefficient
of
conversion
from
carbon
dioxide
to
dry
matter
is
0.56
g
DM-g
C02 !.
The
annual
evolution
of ...
attenuation
of
solar
radia-
tion
by
clouds
from
the
ITC
and
the
deple-
tion
of
soil
water
at
the
end
of
the
short
dry
season;
3)
October-November:
the
physiol...
... stand
and a certain level of resistance to the impact of
small rodents in spite of unfavourable years of the
total disposal of seed crop.
In addition to the eff ect of small mammals on
stands ...
of the Statistica.cz version 8 programme. e t-test
was used for independent samples (comparisons of
the weight of animals, diversity of two sites and rel-
ative abundance...
... share of dust and the
sharpness of cutting is decreased. e overhang of
knives from the plane of the disc defines the prede-
termined length of chips, which directly influences
the length of chips ... the type, moisture and qual-
ity of wood, lock and cutting angle of knives, angle
of the contact, cutting speed, length of the slotted
hole and feeding speed of wooden ma...
... proportion of beetles vectoring deutonymphs of uropodine mites, and on assemblage structure, frequency dis-
tribution and placement of uropodids on the bark beetle vector. A total of 3,302 adults of ... presence of fresh
wounds on lower parts of trunks, at heights of 1.3–1.6
m, measured from the ground to the lower margin
of trap panes. In each sample plot they were posi-...
... eff ects of the storage of
soil samples before extraction were proved on the
amount of caught juvenile and adult earthworms
on the spring and autumn date of sampling at the
level of signifi ... high content of phosphorus, and nega-
tively to the high level of calcium. D. octaedra responded positively to the higher level of calcium and D. vejdovskyi
to the higher content of...
... – beginning of autumn colouring of individual
leaves, 3 – beginning of autumn leaf colouring on
a mass scale, 5–10% of leaves coloured, 4– mass
autumn leaf colouring, ~ 50% of leaves coloured, ... (m)
Fig. 1. Spatial patterns of the assessed envi-
ronmental variables over the area of the beech
provenance trial
Table 1. Analysis of variance (signifi cance of F-tests) of...
... distribu-
tion of the PWN [16]. Therefore, determination of the northern
limit for distribution and forecast of potential dispersal regions
of the beetle has important significance in the management of
the ... as a factor for potential distribution of Monochamus alternatus, parameters of cold hardiness and acclimation
responses of the beetle were examined. Supercooling points (...
... same eccentricity of ellipse. Increase of temperature was caused by increase of stem tem-
perature. Comparably visible range of iso-temperature profiles (compare upper parts of ellipses) demonstrates ... images of heat field and sap flow 657
Figure 3. ( A) IR-image of the heat field in the stem xylem around a linear heater under zero-flow conditions: M – center of an ellipse, F1, F...
... had
85.0% of the leaf biomass of UT, whereas HT had 55.3% of the leaf
biomass of UT. This was similar to differences in BA among plots
(LT: 88.4% of UT; HT: 59.3% of UT).
With the exception of 2 years ... INTRODUCTION
Foliar or leaf biomass of a forest stand is the primary deter-
minant of stand growth [26, 31, 35] because foliage constitutes
the photosynthetic organ of a...
... highest content of
40.3 mg.kg
−1
for spruce soil (p < 0.05). Concerning the net
production of ammonium for the 40 days of incubation, soil
from native forest released 17.1 mg.kg
−1
of NH4-N against
13.4 ... accurately the impact of tree species, further studies are
needed in a long-term incubation so as to determine the ex-
tent and dynamic of the biodegradation of organic ma...