Earth & Environmental Sciences
desert
100%
ecosystem
74%
nitrogen
52%
city
46%
nutrient
36%
urban ecosystem
35%
urbanization
28%
watershed
24%
riparian zone
23%
sustainability
23%
nitrate
22%
denitrification
22%
biogeochemistry
19%
ecosystem service
17%
disturbance
17%
infrastructure
16%
climate change
16%
rate
16%
arid land
16%
soil
16%
climate
15%
science
15%
water
14%
ecology
14%
land use
14%
urban ecology
14%
carbon
13%
runoff
13%
urban system
13%
climate change impact
13%
phosphorus
12%
wetland
12%
ecosystem process
11%
creek
11%
stormwater
11%
desert soil
11%
ecosystem function
11%
aquatic ecosystem
10%
budget
10%
metabolism
10%
metropolitan area
10%
catchment
9%
effect
9%
rainfall
9%
floodplain
9%
ammonium
9%
winter
9%
hyporheic zone
9%
monsoon
9%
biodiversity
9%
Agriculture & Biology
ecosystems
97%
deserts
72%
Sonoran Desert
55%
nitrogen
42%
urbanization
32%
riparian areas
27%
ecology
24%
uptake mechanisms
21%
denitrification
21%
nutrients
21%
nitrates
20%
water
19%
biogeochemistry
18%
land use
17%
arid lands
14%
surface water
14%
wetlands
14%
soil
13%
groundwater
12%
carbon
12%
climate change
12%
rivers
12%
biogeochemical cycles
12%
ecologists
11%
Agosia chrysogaster
11%
nitrogen cycle
11%
stormwater
11%
aquatic ecosystems
11%
net primary productivity
11%
gross primary productivity
10%
dissolved inorganic nitrogen
10%
rain
10%
sediments
10%
floodplains
10%
riparian vegetation
9%
hyporheic zone
9%
ammonium
9%
hydrology
9%
desert soils
9%
climate
9%
runoff
9%
winter annuals
9%
ecosystem services
9%
environmental science
8%
shrubs
8%
nutrient content
8%
lakes
8%
terrestrial ecosystems
8%
global change
8%
biodiversity
8%