Sustainability,
Год журнала:
2024,
Номер
16(23), С. 10367 - 10367
Опубликована: Ноя. 27, 2024
Knowledge
about
the
decomposition
of
litter
in
signal
grass
pastures
is
still
limited,
especially
managed
under
deferred
grazing.
Thus,
we
aimed
to
evaluate
chemical
composition,
carbon/nitrogen
(C/N)
ratio,
and
rate
(Urochloa
decumbens
cv.
Basilisk)
not
fertilized
with
N
(U0),
50
kg·N·ha−1
(U50),
100
(U100),
intercropped
calopo
(Calopogonium
mucunoides
Desv.)
(UC),
grazing
at
different
incubation
times
for
two
experimental
periods
(2017–2018
2018–2019).
Data
were
analyzed
using
a
randomized
block
design
four
management
systems
blocks,
each
containing
replicates
per
treatment.
Nitrogen
sources
increased
concentrations
before
incubation.
incubated
affected
by
periods,
increasing
over
time,
mainly
U50
U100.
U100
samples
exhibited
higher
acid
detergent
insoluble
nitrogen
(ADIN)
levels
than
U0
only
period
2.
Notably,
C/N
ratio
did
differ
systems;
however,
it
decreased
final
values
24:1
26:1
1
2,
respectively.
Overall,
from
or
biological
concentrations,
but
their
ADIN
concentrations.
However,
affect
ratios
no
differences
biomass
observed
among
systems,
possibly
due
occurring
prior
sampling.
The Science of The Total Environment,
Год журнала:
2023,
Номер
874, С. 162599 - 162599
Опубликована: Март 3, 2023
The
Kvarken
Archipelago
is
Finland's
World
Heritage
site
designated
by
UNESCO.
How
climate
change
has
affected
the
Kvaken
remains
unclear.
This
study
was
conducted
to
investigate
this
issue
analyzing
air
temperature
and
water
quality
in
area.
Here
we
use
long-term
historical
data
sets
of
61
years
from
several
monitoring
stations.
Water
parameters
included
chlorophyll-a;
total
phosphorus;
nitrogen;
coliform
bacteria
thermos
tolerant;
temperature;
nitrate
as
nitrite-nitrate
nitrogen,
Secchi
depth
correlations
analysis
identify
most
relevant
parameters.
Based
on
correlation
weather
parameters,
showed
a
significant
with
(Pearson's
=
0.89691,
P
<
0.0001).
increased
April
(R2
(goodness-of-fit)
0.2109
&P
0.0009)
July
0.1207
0.0155)
which
indirectly
chlorophyll-a
level
(e.g.
June
increasing
slope
0.39101,
R2
0.4685,
0.0001)
an
indicator
phytoplankton
growth
abundance
systems.
concludes
that
there
might
be
indirect
effects
likely
increase
Archipelago,
particular
causing
concentration
at
least
some
months.
