Subject
biotope
ecosystem
4
ecology
3
plant protection
3
population ecology
3
biodiversity
2
biosphere
2
landscape
2
nature conservation
2
plant ecology
2
vegetation
2
agricultural use
1
agriculture
1
aquatic ecosystem
1
biogeochemical cycle
1
biogeochemistry
1
biological system
1
cartography
1
ecological biochemistry
1
environmental protection
1
fresh water
1
lake
1
limnology
1
mapping
1
plant growth
1
plant metabolism
1
plant physiology
1
preservation
1
river
1
systematics
1
taxonomy
1
water balance
1
water budget
1