Frontiers in Ecology and the Environment,
Год журнала:
2021,
Номер
19(6), С. 326 - 333
Опубликована: Май 3, 2021
Overcoming
challenges
of
water
scarcity
necessitates
creative
flow
management
approaches
that
account
for
multiple,
potentially
competing
needs
plants
and
animals
in
river
ecosystems.
Mechanistic
multispecies
models
can
guide
decision
making
by
evaluating
trade‐offs
associated
with
regimes
designed
specific
ecosystem
outcomes
before
implementation.
We
investigated
the
cross‐ecosystem
effects
environmental
to
benefit
focal
groups
riparian
vegetation,
fishes,
invertebrates.
The
revealed
among
different
designer
narrow
taxonomic
targets,
which
some
cases
caused
non‐target
taxa
become
locally
extirpated
within
short
(decadal)
timespans.
By
incorporating
multiple
frequencies
–
from
intra‐annual‐scale
pulses
large
decadal‐scale
floods
simulated
natural
regime
enabled
balanced,
albeit
smaller,
population
sizes
across
three
components:
72%
achieved
regimes,
on
average.
Although
returning
a
may
not
be
possible
highly
flow‐modified
rivers,
novel
must
incorporate
diverse
flood
drought
accommodate
occasionally
conflicting
requirements
at
times.
Proceedings of the National Academy of Sciences,
Год журнала:
2020,
Номер
117(7), С. 3648 - 3655
Опубликована: Фев. 3, 2020
Dams
contribute
to
water
security,
energy
supply,
and
flood
protection
but
also
fragment
habitats
of
freshwater
species.
Yet,
a
global
species-level
assessment
dam-induced
fragmentation
is
lacking.
Here,
we
assessed
the
degree
occurrence
ranges
∼10,000
lotic
fish
species
worldwide
due
∼40,000
existing
large
dams
∼3,700
additional
future
hydropower
dams.
Per
river
basin,
quantified
connectivity
index
(CI)
for
each
by
combining
its
range
with
high-resolution
hydrography
locations
Ranges
nondiadromous
were
more
fragmented
(less
connected)
(CI
=
73
±
28%;
mean
SD)
than
diadromous
86
19%).
Current
levels
highest
in
United
States,
Europe,
South
Africa,
India,
China.
Increases
especially
high
tropics,
declines
CI
∼20
40
percentage
points
on
average
across
Amazon,
Niger,
Congo,
Salween,
Mekong
basins.
Our
can
guide
management
at
multiple
scales
various
domains,
including
strategic
planning,
identification
basins
risk,
prioritization
restoration
measures,
such
as
dam
removal
construction
bypasses.
Geography and sustainability,
Год журнала:
2021,
Номер
2(2), С. 115 - 122
Опубликована: Июнь 1, 2021
Water
is
the
fundamental
natural
resource
that
supports
life,
ecosystems
and
human
society.
Thus
studying
water
cycle
important
for
sustainable
development.
In
context
of
global
climate
change,
a
better
understanding
needed.
This
study
summarises
current
research
highlights
future
directions
science
from
four
perspectives:
(i)
cycle;
(ii)
hydrologic
processes;
(iii)
coupled
natural-social
systems;
(iv)
integrated
watershed
management.
Emphasis
should
be
placed
on
joint
impacts
change
activities
hydrological
processes
resources
across
temporal
spatial
scales.
Understanding
interactions
between
land
atmosphere
are
keys
to
addressing
this
issue.
Furthermore
systematic
approaches
developed
large
basin
studies.
Areas
focused
include:
variations
cryosphere
in
upper
alpine
zones;
relevant
biogeochemical
middle-lower
reaches.
Because
naturally
with
social
characteristics
multiple
scales,
multi-process
multi-scale
models
Hydrological
studies
use
new
paradigm
as
part
water-food-energy
frontier
research.
will
help
promote
interdisciplinary
sciences
accordance
United
Nation's
development
goals.
Environmental Research Letters,
Год журнала:
2019,
Номер
14(11), С. 114001 - 114001
Опубликована: Окт. 8, 2019
Abstract
Recent
studies
have
highlighted
the
reliance
of
global
food
production
on
unsustainable
irrigation
practices,
which
deplete
freshwater
stocks
and
environmental
flows,
consequently
impair
aquatic
ecosystems.
Unsustainable
is
driven
by
domestic
international
demand
for
agricultural
products.
Research
consequences
trade
has
often
concentrated
displacement
pollution
land
use,
while
effect
water
sustainability
drying
over-depleted
watercourses
seldom
been
recognized
quantified.
Here
we
evaluate
consumption
(UWC)
associated
with
crop
determine
share
UWC
embedded
in
trade.
We
find
that,
about
52%
unsustainable,
15%
it
virtually
exported,
an
average
18%
increase
between
year
2000
2015.
About
60%
virtual
transfers
are
exports
cotton,
sugar
cane,
fruits,
vegetables.
One
third
Mexico,
Spain,
Turkmenistan,
South
Africa,
Morocco,
Australia
from
export
markets.
The
globalization
through
contributes
to
running
rivers
dry,
externality
commonly
overlooked
policies.
By
identifying
producing
consuming
countries
that
responsible
trade,
this
study
highlights
links
policies
needed
achieve
sustainable
security
goals
coming
decades.
Global Change Biology,
Год журнала:
2022,
Номер
29(3), С. 575 - 589
Опубликована: Ноя. 29, 2022
We
identified
14
emerging
and
poorly
understood
threats
opportunities
for
addressing
the
global
conservation
of
freshwater
mussels
over
next
decade.
A
panel
17
researchers
stakeholders
from
six
continents
submitted
a
total
56
topics
that
were
ranked
prioritized
using
consensus-building
Delphi
technique.
Our
priority
fell
into
five
broad
themes
(autecology,
population
dynamics,
stressors,
diversity,
ecosystem
services)
included
understanding
diets
throughout
mussel
life
history;
identifying
drivers
declines;
defining
metrics
quantifying
health;
assessing
role
predators,
parasites,
disease;
informed
guidance
on
risks
captive
breeding
translocations;
loss
mussel-fish
co-evolutionary
relationships;
effects
increasing
surface
water
changes;
sand
aggregate
mining;
drug
pollution
other
contaminants
such
as
nanomaterials;
appreciating
arising
river
restoration;
conserving
understudied
hotspots
by
building
local
capacity
through
principles
decolonization;
appropriate
taxonomic
units
conservation;
improved
quantification
services
provided
mussels;
how
many
are
enough
to
provide
these
services.
Solutions
ranged
ecological
studies
technological
advances
socio-political
engagement.
Prioritization
our
can
help
drive
proactive
approach
this
declining
group
which
provides
multitude
important
Science,
Год журнала:
2023,
Номер
379(6635), С. 946 - 951
Опубликована: Март 2, 2023
Ecosystem-based
management
is
costly.
Therefore,
without
rigorously
showing
that
it
can
outperform
traditional
species-focused
alternatives,
its
broad-scale
adoption
in
conservation
unlikely.
We
present
a
large-scale
replicated
and
controlled
set
of
whole-lake
experiments
fish
(20
lakes
monitored
over
6
years
with
more
than
150,000
sampled)
to
examine
the
outcomes
ecosystem-based
habitat
enhancement
(coarse
woody
addition
shallow
littoral
zone
creation)
versus
widespread,
alternative
has
long
dominated
fisheries
practice
(i.e.,
stocking).
Adding
coarse
habitats
alone
did
not,
on
average,
enhance
abundance,
but
creating
water
consistently
did,
especially
for
juvenile
fish.
Species-focused
stocking
completely
failed.
provide
strong
evidence
questioning
performance
actions
aquatic
ecosystems
instead
recommend
key
habitats.
