Earth & Environmental Sciences
nutrient availability
100%
land use
58%
nutrient
57%
nutrient limitation
55%
lake
42%
primary production
41%
fixation
28%
paradigm shift
18%
nitrogen fixation
17%
nitrogen
17%
resource availability
17%
anthropogenic effect
14%
aquatic ecosystem
14%
metabolism
12%
water column
11%
perturbation
11%
watershed
10%
phosphorus
10%
rate
9%
cell
9%
indicator
8%
ecosystem
8%
summer
8%
effect
6%
Agriculture & Biology
phytoplankton
93%
nutrient availability
91%
land use
85%
nutrients
52%
primary productivity
34%
lakes
32%
freshwater lakes
13%
aquatic ecosystems
11%
nitrogen
11%
anthropogenic activities
10%
nitrogen fixation
10%
ecosystems
7%
phosphorus
7%
summer
6%
metabolism
5%
water
4%
cells
3%
Chemical Compounds
Nutrient
94%
Ecosystem
21%
Nitrogen Fixation
12%
Nitrogen
10%
Indicator
7%
Phosphorus(.)
7%
Pharmacological Metabolism
6%
Column Like Crystal
5%