Agriculture & Biology
calcium
13%
Dianthus deltoides
41%
ecosystems
15%
Galium verum
38%
grasslands
18%
landforms
29%
natural resources conservation
24%
Netherlands
20%
nutrients
25%
pastures
50%
Pimpinella saxifraga
40%
riparian areas
25%
rivers
49%
sand
17%
soil
21%
soil acidification
29%
Thymus pulegioides
37%
vegetation types
70%
water
8%
Earth & Environmental Sciences
calcium
8%
disturbance
43%
ecosystem
6%
flooding
8%
grassland
8%
landform
10%
levee
69%
meander
12%
nature conservation
11%
nutrient
13%
pasture
61%
patch dynamics
15%
rehabilitation
10%
riparian zone
12%
river
15%
sand
6%
soil
8%
soil acidification
13%
vegetation type
31%
world
5%
young
7%
Social Sciences
conservation
53%
Netherlands
13%
rehabilitation
13%
river
45%
Vegetation types
100%
water
12%