Earth & Environmental Sciences
West Africa
97%
ecosystem
54%
climate change
53%
grassland
50%
marine record
42%
organic matter
40%
climate variation
36%
nitrogen isotope
35%
palynology
35%
Last Glacial
34%
lake level
34%
tropical region
33%
interglacial
31%
terrestrial ecosystem
30%
crater
29%
pollen
27%
fill
27%
global climate
26%
isotopic composition
26%
environmental change
26%
grass
26%
moisture
23%
timescale
21%
science
19%
transition
19%
nitrogen
18%
lake
17%
climate
16%
sediment
14%
Arts & Humanities
Tropical
100%
West Africa
98%
Climate Change
98%
Ecosystem
84%
Organic Matter
69%
Grassland
63%
Nitrogen Isotopes
40%
Climate
38%
Pollen Analysis
36%
Nitrogen
31%
Pollen
29%
Sediment
29%
Moisture
28%
Environmental Change
28%
Time Scales
25%
Ghana
23%
Bulk
23%
Uncertainty
13%