Sentences with phrase «tiny organisms preserved»

By comparing the relative abundance of species of tiny organisms preserved in the deep - sea cores, PRISM scientists could roughly map how cold - loving organisms gave way to warm ones (and vice versa) at different times in the past.

Not exact matches

Researchers at the University of Tennessee, Knoxville, have discovered that tiny below - ground organisms play a role in this phenomenon — and could be used to encourage tree migration in order to preserve heat - sensitive species.

Knudson and Ravelo based their findings on an analysis of carbon and oxygen isotopes in the calcium carbonate shells of tiny marine organisms called foraminifera, which are preserved in seafloor sediments.

Throughout billions of years of existence on Earth, these tiny units of life have evolved to collaborate at the smallest levels in promoting, preserving and protecting the organism they comprise.

Karla Knudson analyzed isotopes in the shells of tiny marine organisms preserved in seafloor sediments to find chemical signatures of past water temperatures and other oceanographic conditions.

In environments like Antarctica that seldom preserve foraminifera — tiny organisms whose shells are the gold standard for dating ocean sediments — researchers have relied on dating bulk organic matter.