Sentences with phrase «using stable isotope ratios»

Here we compared the methane production between runnel and polygonal ponds using stable isotope ratios, 14C signatures, and investigated potential methanogenic communities through high - throughput sequencing archaeal 16S rRNA genes.

Not exact matches

Using spectroscopy, stable isotope ratios (carbon, nitrogen and sulphur) were investigated in the collagen of the bones, along with the ratio of strontium to calcium in the bone mineral.

Like the data used right through 0.02 to 66 My, the Freidrich et al collection comprises stable oxygen isotope ratios from the shells of tiny bottom - dwelling, deep - water marine organisms (benthic foraminifera).

This analytical document shows that stable isotope ratios can be used to monitor changes in the character of precipitation in response to periodic variability or changes in climate.

Early TRL projects focused on establishing long tree - ring records from temperature - sensitive boreal forest locations in North American for studies of global change, using dendrochronologically dated wood, to investigate the value of stable isotope ratios in cellulose as paleo - thermometers and developing the necessary computer software for processing the data.

Stable oxygen isotope ratios contained in the shell can be used to infer past water temperatures.