Physics & Astronomy
phytoplankton
100%
dynamic control
88%
nutrients
86%
rivers
83%
productivity
76%
biomass
67%
plumes
66%
nitrates
57%
Columbia (Orbiter)
38%
stations
37%
coasts
35%
ammonium nitrates
19%
nitrogen
18%
ecosystems
17%
shelves
15%
grazing
15%
water
14%
oceans
14%
set theory
13%
acids
11%
near fields
11%
trends
9%
iron
9%
carbon
8%
kinetics
7%
estimates
7%
Earth & Environmental Sciences
river plume
84%
nutrient dynamics
81%
phytoplankton
51%
productivity
44%
biomass
39%
nitrate
37%
plume
31%
station
22%
silicic acid
17%
community response
16%
coast
15%
nitrogen
15%
ammonium nitrate
14%
used water
14%
accumulation rate
13%
limiting factor
13%
grazing
11%
incubation
10%
ammonium
10%
trace element
9%
iron
8%
nutrient
8%
kinetics
7%
ecosystem
7%
ocean
7%
carbon
7%
program
6%
trend
6%
river
6%
experiment
5%
rate
4%
water
3%
effect
3%
Chemical Compounds
Nutrient
69%
Nitrate
48%
Macronutrient
25%
Micronutrient
22%
Silicic Acid
20%
Nitrogen
19%
Ecosystem
19%
Ammonium Nitrate
18%
Ammonium
12%