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soil temperature
22
evaporation pan
21
lake depth
21
lake temperature
21
weather
21
aquatic
15
aquatic ecosystems
15
arctic
15
chemistry
15
chlorophyll
15
chlorophyll a
15
depth
15
freshwater
15
lakes
15
limnology
15
alkalinity
10
ammonium
10
anions
10
bacteria
10
bacterial abundance
10
biogeochemistry
10
carbon
10
carbon to nitrogen ratio
10
dissolved nutrients
10
dissolved organic carbon
10
inorganic nutrients
10
long term ecological research
10
long term monitoring
10
monitoring
10
nitrate
10
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