Earth and Planetary Sciences
Productivity
63%
Site
37%
Plant
35%
Ecosystem
35%
Response
34%
Species Richness
28%
Plant Specie
26%
Experiment
24%
Addition
24%
Stability
21%
Biomass
20%
Datum
19%
Biodiversity
18%
Climate
18%
Model
18%
Prediction
16%
Loss
16%
Nitrogen
16%
Network
15%
Species
15%
Nutrient Enrichment
13%
Eutrophication
13%
Soil
13%
Primary Production
13%
Herbivory
12%
Gradient
12%
Investigation
11%
Increasing
10%
Fertilization
10%
Variation
10%
Herbivore
10%
Hypothesis
9%
Sensitivity
9%
Time
9%
Carbon
9%
Ecosystem Response
8%
Show
8%
Net Primary Production
8%
Research
8%
Drought
8%
Continent
8%
Deposition
7%
Global Change
7%
Plant Community
7%
Constraint
7%
Native Species
7%
Environment
6%
Aboveground Biomass
6%
United States of America
6%
Tool
6%
Litter
6%
Human Activity
5%
Global Environmental Change
5%
Dominance
5%
Earth
5%
Community Composition
5%
Phosphorus
5%
Soil Organic Matter
5%
Impact
5%
Condition
5%
Report
5%
Grassland Ecosystem
5%
Competition
5%
Cause
5%
Emerging
5%
Trend
5%
Landscape
5%
Conservation
5%
Environmental Change
5%
Agricultural and Biological Sciences
Nutrients
100%
Ecosystems
37%
Herbivore
30%
Climate
20%
Plant Communities
19%
Biomass
18%
Primary Production
17%
Variability
15%
Annuals
14%
Eutrophication
14%
Soil
13%
Nutrient Availability
12%
Primary Productivity
10%
Soil Carbon
10%
Environment
9%
Grasses
9%
Grassland Soil
9%
Leaves
9%
Roots
8%
Biodiversity
8%
Humans
7%
Global Change
6%
Temperature
6%
Soil Organic Matter
5%
Models
5%
Climate Change
5%