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Document Description
Title
The
effect
of
climate
on the
growth
of
Salix
species
in an
experimental
energy
plantation
environment
Author
Dowsley
,
Barbara
J.
Description
Thesis
(M.Sc.)--Memorial
University
of
Newfoundland
,
1988.
Geography
Date
1988
Pagination
xi, 129 leaves : ill., map.
Subject
Fuelwood
crops--Newfoundland
and
Labrador;
Willows--Newfoundland
and
Labrador
Degree
M.Sc.
Degree Grantor
Memorial University of Newfoundland. Dept. of Geography
Discipline
Geography
Language
Eng
Spatial Coverage
Canada--Newfoundland and Labrador
Notes
Bibliography:
leaves
86-92.
Abstract
The
spatially
diverse
and
often
unsettled
nature
of the
summer
weather
of
insular
Newfoundland
suggests
that the
influence
of
climate
on
biomass
production
should be
taken
into
consideration
when
examining
potential
sites
for
wood
energy
plantations.
The
growth
of
shoot
height
and
base
diameter
of
three
willow
(Salix)
species
in an
experimental
energy
plantation
environment
at
Pasadena
,
Newfoundland
(49°01'N
latitude
,
57°
30'W
longitude)
was
examined
during
the
1985
growing
season.
S.viminalis
(clone
number
0683
,
Sweden)
was
found
to be the
most
successful
clone
,
achieving
a
final
mean
shoot
height
of
209
cm
and a
final
mean
shoot
base
diameter
of
1.49
cm.
Salix
purpurea
(clone
number
077
,
Sweden)
and
S.alba
(clone
number
5023
,
Romania)
shoots
attained
final
mean
heights
of
183
cm
and
180
cm
respectively
, and
final
mean
base
diameters
of
1.07
cm
and
1.44
cm
respectively.
The
three
species
were
significantly
different
in their
final
mean
height
and
base
diameter
attainment.
--
The
height
and
base
diameter
of
S.viminalis
,
S.purpurea
and
S.alba
clones
was
recorded
on a
weekly
basis
between
June
10
and
October
7
,
1985.
The
seasonal
pattern
of
shoot
height
and
base
diameter
growth
of
S.viminalis
and
S.alba
clones
was
effectively
explained
by
second-order
polynomial
regression
equations
(multiple
r²
≥
98%).
The
seasonal
pattern
of
S.purpurea
shoot
height
growth
was also
described
by a
quadratic
equation
whereas
base
diameter
growth
during
the
1985
growing
season
was
described
by a
cubic
or
third-order
polynomial
regression
equation.
--
Total
shoot
height
of the
three
species
was
recorded
daily
between
June
21
and
August
14
,
1985
and
climatic
variables
at the
experimental
plantation
site
were
monitored
simultaneously.
Real
and
derived
climatic
variables
recorded
the
current
day
and the
previous
day
were
tested
for
entry
into
multiple
regression
models
with the
daily
shoot
height
increment
change
of
each
of the
three
species
as the
dependent
variable.
Maximum
air
temperature
and the
hours
of
daylight
of the
current
day
accounted
for
69%
,
59%
and
55%
of the
variance
in
daily
height
growth
of
S.purpurea
,
S.viminalis
and
S.alba
shoots
respectively.
Values
of
evapotranspiration
determined
for the
previous
day
from
measurements
of
net
radiation
and
modeled
values
of the
amount
of
water
in the
root
zone
,
accounted
for a
further
10%
and
3%
of the
variability
in
daily
height
grqwth
of
S.viminalis
and
S.purpurea
shoots
respectively.
--
It
is
concluded
from the
results
of this
study
that
maximum
biomass
production
of the
three
species
examined
will be
realised
at
plantation
sites
where
the
climate
of the
growing
season
enables
maximum
photosynthetic
efficiency
via
high
inputs
of
solar
energy
and the
avoidance
of
water
deficit
conditions.
Type
Text
Resource Type
Electronic
thesis
or
dissertation
Format
Image/jpeg;
Application/pdf
Source
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier
76082944
Rights
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Collection
Electronic
Theses
and
Dissertations
Scanning Status
Completed
PDF File
(16.43
MB)
--
http://collections.mun.ca/PDFs/theses/Dowsley_BarbaraJ.pdf
CONTENTdm file name
197442.cpd
