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mountain spring
water spring
hydrogeology
mountain stream
water sampling point
npdes
sewage pipe polluted water
clear stream
asian water monitor
hydrometric
garter snake
streams
spring water
pigeon spring
aquifer
water and stone
streamside
water frog
runoff
pseudagrion
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mountain spring
water spring
streambed
water sampling point
npdes
mountain stream
hydrogeology
asian water monitor
clear stream
hydrometric
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intertidal
rockpool
water and stone
ruby beach
rocky beach
red cliff crab
mountain spring
water spring
streambeds
sea anemones
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pigeon spring
water spring
mountain spring
streambed
garden pond
pond plants
echinodorus
source de la sorgue
upper water
streambank
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common frog
pelophylax
water frog
pond frog
eastern sedge frog
frog through
cane toad
frog gathering
water-leaf family
green frog
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pigeon spring
water spring
the brook
crescent spring
mountain spring
streambank
source de la sorgue
water channel
streambeds
the source of the danube
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pond plants
marsh crocodile
asian water monitor
water channel
everglades rat snake
trout breeding
fish traps
nile crocodile
caiman crocodilus
wastewater treatment
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pigeon spring
mountain spring
water spring
brooktrout
eastern newt
river crayfish
crescent spring
sewage pipe polluted water
potamogeton
tadpoles
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streambed
tributaries
tree snake
tree root
mountain spring
water spring
streambeds
dinosaur footprint
bioturbation
crescent spring
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streambed
upper water
flowing creek
clear stream
streambank
water flowing
water channel
mountain stream
water flow
streamside
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pond plants
pigeon spring
fishpond
pond frog
aquatic plants
tadpoles
aquatic plant
garden pond
duckweed
butterfly swimming
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streambed
streambank
mountain stream
streambeds
streams
flowing creek
rivulet
streamside
watercourse
waterflow
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streambed
pigeon spring
mountain spring
mountain stream
upper water
water spring
source de la sorgue
upstream
runoff
streams
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streambed
limestone wall
bioturbation
flagstone
soil erosion
microhabitat
quarry stones
quarry stone
cement background
wall stone
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honeycomb stone
bear footprint
microhabitat
streambeds
mountain spring
schwaben stone
crescent spring
water spring
tributaries
water and stone
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leaf flowering spring
pigeon spring
mountain spring
streambank
microhabitat
spring water
ditch side
flower water
water spring
water flowers
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water and stone
riverbed
the source of the danube
spotted sandpiper
inlet
piave
mangroves
green water
potomac river
xanthophylls
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clear stream
water flowing
mountain stream
streambank
flowing creek
upper water
pigeon spring
the brook
running water
mountain spring
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mountain spring
mountain stream
running water
goldstream
headwaters
tributaries
streamside
waterflow
canyoning
streambed
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the roots of the mangrove trees
eastern mangroves
mangroves
ectomycorrhizal
marsh crocodile
tree root
ditch side
debris
common hazel root
rhizomes
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pigeon spring
water flowing
water spring
mountain spring
water flow
water and stone
flowing water
wasserbillig
rushing water
fjord trout