Agriculture & Biology
ammonia
31%
ammonia monooxygenase
100%
ammonium nitrate
14%
bacteria
20%
Chesapeake Bay
86%
Choptank River
24%
clones
17%
DNA
6%
ecological function
14%
environmental factors
7%
enzymes
5%
estuaries
25%
functional diversity
14%
genes
21%
genetic variation
7%
marine environment
14%
nitrification
29%
Nitrosomonas
19%
Nitrosospira
20%
organic carbon
13%
oxygen
8%
phylogeny
21%
pollution load
16%
Proteobacteria
13%
rivers
9%
salinity
19%
sediments
57%
trophic levels
14%
Earth & Environmental Sciences
ammonia
49%
ammonium nitrate
8%
bacterium
14%
chemical
7%
clone
16%
DNA
6%
ecosystem function
8%
environmental factor
6%
environmental gradient
71%
enzyme
6%
estuarine environment
9%
estuary
12%
gene
47%
genetic variation
9%
marine environment
6%
natural environment
7%
nitrification
14%
North America
6%
nutrient
5%
organic carbon
6%
oxygen
5%
phylogenetics
19%
river
7%
salinity
10%
sediment
29%
sediment core
7%
station
22%
trophic level
7%