Earth & Environmental Sciences
periphyton
93%
nitrogen isotope
87%
stable isotope
64%
carbon
43%
food web
42%
lotic environment
24%
river
22%
current velocity
18%
metadata
17%
biome
16%
catchment area
15%
chlorophyll a
13%
ammonium
12%
canopy
12%
tracer
12%
geology
11%
attribute
11%
nitrate
11%
carbonate
10%
nutrient
9%
vegetation
9%
nitrogen
9%
ecosystem
8%
world
8%
resource
8%
removal
8%
temperature
5%
analysis
4%
Agriculture & Biology
periphyton
100%
stable isotopes
79%
food webs
50%
carbon
50%
nitrogen
44%
rivers
36%
ecosystems
23%
metadata
22%
lotic systems
21%
geology
21%
nitrogen cycle
20%
carbonates
17%
Arctic region
16%
salmon
15%
tracer techniques
15%
ammonium
14%
nitrates
12%
canopy
12%
species diversity
11%
chlorophyll
11%
nutrients
9%
temperature
6%