Landbrug og biologi
oligotrophication
100%
eutrophication
62%
macrophytes
58%
lakes
43%
Charophyta
37%
Angiospermae
35%
nutrients
31%
sewage
31%
macroalgae
26%
sediments
24%
pollution
22%
debt
18%
ecological restoration
17%
credit
16%
natural resources conservation
15%
Denmark
14%
anthropogenic activities
14%
water quality
13%
mosses and liverworts
13%
cleaning
12%
extinction
12%
species richness
11%
species diversity
10%
ecosystems
10%
phosphorus
9%
environmental factors
8%
new species
8%
synthesis
7%
water
5%
Geo- og miljøvidenskab
eutrophication
48%
plant species
47%
nutrient
34%
lake
31%
macrophyte
27%
angiosperm
23%
charophyte
18%
vanished species
13%
colonization
12%
sewage
11%
debt
8%
species pool
8%
pollution
8%
credit
7%
nature conservation
7%
moss
7%
sediment
6%
vertical distribution
6%
water
6%
new species
5%
species richness
5%
extinction
5%
environmental conditions
5%
restoration
5%
fold
4%
phosphorus
4%
ecosystem
3%