Fisheries Management and Ecology,
Год журнала:
2022,
Номер
29(4), С. 323 - 328
Опубликована: Июнь 23, 2022
AJL
is
an
Associate
Editor
for
Fisheries
Management
and
Ecology.
Neither
author
has
any
conflicts
to
declare.
No
new
data
were
generated
in
creating
this
manuscript.
North American Journal of Fisheries Management,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 15, 2024
Abstract
Objective
The
objective
of
this
study
was
to
evaluate
stocking
success
Walleye
Sander
vitreus
in
lakes
and
reservoirs
across
the
Midwestern
United
States
inform
practices
for
state
agencies.
Demand
may
increase
if
climate
change
limits
potential
natural
recruitment
lakes.
Consequently,
strategic
distribution
maximize
fishing
opportunities.
Methods
We
synthesized
data
from
2226
fry
fingerling
events
on
653
used
random
forest
algorithms
mixed‐effects
linear
models
identify
abiotic
biotic
factors
related
success.
Result
Latitude
year
explained
relatively
little
variation
compared
within‐lake
variation.
Relative
abundance
Largemouth
Bass
Micropterus
nigricans
an
important
indicator
fingerlings,
with
generally
decreasing
increased
bass
abundance.
There
interaction
between
lake
surface
area
growing
degree‐days,
as
large
(>2500
ha)
seemed
be
more
conducive
regardless
degree‐days.
that
we
developed
did
not
accurately
predict
exact
levels
but
were
92–94%
accurate
predicting
whether
both
fingerlings
would
at
or
above
50th
percentile.
Conclusion
These
findings
help
management
allocation
suggest
future
increases
degree‐days
could
limit
effectiveness
some
Transactions of the American Fisheries Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 11, 2024
Abstract
Objective
Managing
freshwater
fisheries
in
warming
lakes
is
challenging
because
climate
change
impacts
anglers,
fish,
and
their
interactions.
Methods
We
integrated
recent
models
of
current
future
lake
temperatures
with
recreational
catch
data
from
587
three
north‐central
U.S.
states
(Michigan,
Minnesota,
Wisconsin)
to
evaluate
how
the
thermal
composition
varied
as
a
function
temperature,
ice
coverage,
morphometry.
Result
found
that
warmwater
share
(WCS),
defined
proportion
fish
angling
belonged
guild
(final
temperature
preferendum
[FTP]
>
25°C),
increased
average
annual
surface
decreased
survey
coverage.
However,
we
also
WCS
area
depth.
Using
mid‐century
(2040–2060)
water
projections
while
holding
all
other
variables
constant,
predicted
will
likely
increase
warms
but
significant
heterogeneity
persist.
Conclusion
Lakes
are
large
(>100
ha)
deep
(>10
m)
those
cooler
(<3700
growing
degree‐days)
hold
refugia
for
coolwater
(FTP
=
19–25°C)
coldwater
<
19°C)
even
rise,
creating
potential
management
actions
resist
shift
fisheries.
Managers
smaller
more
rapidly
may
want
consider
strategies
accept
or
direct
emerging
fishing
opportunities.
suggest
most
viable
path
adaptation
landscapes
diverse
be
shifts
where
possible
rise
opportunities
necessary.
North American Journal of Fisheries Management,
Год журнала:
2023,
Номер
43(6), С. 1673 - 1686
Опубликована: Ноя. 7, 2023
Abstract
Objective
In
recent
decades,
widespread
evidence
of
declining
Walleye
Sander
vitreus
recruitment
in
the
Midwestern
United
States
has
raised
concerns
about
diminishing
ecological
benefits
and
fishing
opportunities,
which
turn
resulted
natural
resource
agencies
using
stocking
to
supplement
populations.
Success
events
vary;
thus,
evaluating
external
factors
that
influence
success
resulting
from
or
production
is
critical
for
improved
management.
Methods
We
evaluated
influencing
relative
98
lakes
stocked
annually
with
by
integrating
20
years
data
fisheries
assessment
abiotic
data.
indexed
as
abundance
cohorts
sources
combined
used
boosted
regression
tree
modeling
identify
variables
are
associated
varying
recruitment.
Result
Growing
degree‐days
at
age
1,
shoreline
development
index,
mean
depth,
2
were
most
important
variables.
The
model
explained
17%
observed
variability
A
positive
relationship
between
growing
was
observed,
whereas
lake
depth
had
a
negative
Secondarily
predictors
surface
area,
spring
warming
rate,
Northern
Pike
Esox
lucius
abundance,
0.
general,
positively
these
predictors,
exceptions
rates
>0.3°C/day
being
exposed
>3500
Conclusion
Our
results
indicate
thermal
addition
characteristics
drivers
waters
highlights
potential
managers
use
this
information
prioritize
efforts
temperate
lakes.
Fisheries Management and Ecology,
Год журнала:
2022,
Номер
29(4), С. 323 - 328
Опубликована: Июнь 23, 2022
AJL
is
an
Associate
Editor
for
Fisheries
Management
and
Ecology.
Neither
author
has
any
conflicts
to
declare.
No
new
data
were
generated
in
creating
this
manuscript.