Agriculture & Biology
forest decline
100%
Midwestern United States
87%
Quercus
61%
drought
43%
frost
24%
savannas
22%
Quercus marilandica
21%
Discula
20%
grasslands
19%
Quercus stellata
19%
Diplodia seriata
18%
vegetation
16%
systems analysis
14%
ecotones
14%
geographic information systems
13%
factor analysis
12%
root systems
10%
climate change
9%
water
9%
canopy
8%
climate
8%
pathogens
6%
temperature
4%
Earth & Environmental Sciences
oak
66%
drought
32%
timber
24%
savanna
17%
frost
17%
mosaic
16%
grassland
13%
root system
10%
vegetation
10%
ecotone
9%
cavitation
9%
systems analysis
8%
pathogen
7%
logistics
7%
geographic information system
7%
global climate
7%
vessel
6%
canopy
6%
mortality
6%
damage
5%
water
5%
climate change
4%
climate
4%
temperature
3%
analysis
2%