Sentences with phrase «stable isotope analysis»

[7] Recent evidence from stable isotope analysis of Holocene fur seal bone collagen (δ13C and δ15N) indicates that before the maritime fur trade, it was more common for these animals to breed at local rookeries in British Columbia, California, and likely along much of the northwest coast of North America.

Using osteobiography and paleopathology methods as well as stable isotope analysis and mass spectrometry on about 500 skeletons from the dairy - farming area, they have been able to reconstruct the group's diet, disease and overall health.

Because C4 plants concentrate more of carbon's heavier isotopes compared with C3 plants, a technique called stable isotope analysis — which measures the relative concentrations of isotopes in animal bones — can often detect which plants predominate in the diet.

Next, he and his colleagues will run stable isotope analyses on the hair to estimate of just how much salmon the bear consumed during the previous year's salmon run.

«Laser ablation isotope ratio mass spectrometry for enhanced sensitivity and spatial resolution in stable isotope analysis.»

Budd, P., Millard, A., Chenery, C., Lucy, S. & Roberts, C. Investigating population movement by stable isotope analysis: a report from Britain.

Molecular dating and stable isotope analyses also show that by very early in their evolutionary history, polar bears were already inhabitants of the Artic sea ice and had adapted very rapidly to their current and unique ecology at the top of the Arctic marine food chain.

The next step, she says, is to use stable isotope analysis to see if the Mexican turkeys had high levels of corn in their diets — a sign that they were being fed by humans.

«Using stable isotope analyses we were able to determine what the fish were consuming and, to our surprise, about a third of the goby diet comes from jellyfish,» says fisheries biologist Victoria Braithwaite of The Pennsylvania State University, part of an international collaboration studying the current.

The wolf's diet (from stable isotope analysis) was made up of deer, not grain, and although its teeth were worn, there is no direct evidence that this wolf was part of the community.

Variation in winter diet of southern Beaufort Sea polar bears inferred from stable isotope analysis