Agriculture & Biology
wolves
68%
carbon isotopes
66%
growth rings
64%
trophic levels
63%
stable isotopes
58%
carnivores
45%
bison
38%
Pinus banksiana
37%
Alces alces
36%
Canis lupus
36%
isotopes
28%
Pinus flexilis
23%
Juniperus
19%
Canis
19%
museums
14%
basins
12%
herbivores
11%
animals
11%
predators
10%
organisms
8%
tissues
6%
Earth & Environmental Sciences
tree ring
60%
trophic level
56%
carbon isotope
52%
environmental change
48%
stable isotope
47%
carnivore
46%
trend
27%
isotope
20%
animal
18%
carbon isotope ratio
17%
tar
15%
herbivore
14%
museum
14%
predator
12%
pine
12%
North America
10%
tissue
10%
organism
9%
indicator
8%
detection
8%
basin
7%
Medicine & Life Sciences
Carbon Isotopes
100%
Bison
64%
Isotopes
60%
Pinus
59%
Juniperus
31%
Herbivory
30%
Museums
27%
Tars
26%
North America
20%
Animals
18%
Motivation
15%
Chemical Compounds
Stable Isotope
61%
Isotope
48%
Indicator
24%