Agriculture & Biology
carbon isotopes
100%
seabirds
95%
stable isotopes
88%
nitrogen
49%
chicks
40%
blood cells
37%
isotopes
34%
Fratercula cirrhata
30%
blood
29%
dietary markers
26%
isotope fractionation
24%
Alcidae
23%
carbon
22%
birds
20%
food deprivation
20%
ecologists
20%
nutritional status
17%
starvation
15%
food intake
15%
tissues
15%
fractionation
14%
ecology
12%
lipids
9%
diet
8%
proteins
5%
Earth & Environmental Sciences
seabird
97%
carbon isotope
79%
stable isotope
72%
nitrogen
50%
blood
42%
nitrogen isotope
24%
food
21%
effect
19%
bird
17%
isotope
15%
tissue
15%
food intake
14%
cell
13%
starvation
12%
isotopic fractionation
12%
carbon
12%
diet
9%
lipid
9%
fractionation
8%
incorporation
8%
tracer
8%
experiment
8%
ecology
8%
protein
7%