Sentences with phrase «during diatom»

Then in 1997 and 1998, they and their colleagues sampled copepods in the Adriatic Sea during diatom blooms in winter, when the copepods feast primarily on diatoms, and during the summer, when diatom numbers are down and copepods eat a more mixed diet that includes other algae.

But he notes that others have not seen as dramatic a decrease in copepod reproductive success during diatom blooms elsewhere and warns that the Adriatic's heavy pollution may have enhanced the effect.

Not exact matches

During this cruise we are looking at the diatom species currently living in the surface waters in order to develop our understanding of their habitats.

Some researchers say that the ice sheet must have melted during the Pliocene, allowing trees to cover the mountains and diatoms to thrive in the seas.

They found that the diatom - rich sediments, deposited during the warm intervals, were predominantly composed of material from one terrane - the Jurassic to Cretaceous volcanic rocks and associated sedimentary rocks of the Ferrar Large Igneous Province (FLIP).

Multi-centennial-scale changes in East Asian typhoon frequency during the mid-Holocene This study reconstructs a record of typhoon frequency over the Korean Peninsula during the mid-Holocene using mineral components and diatom assemblages in deposits of Lagoon Hyangho, located on the east coast of the peninsula.

During the Little Ice Age phase 1 (LIA 1 — AD 1400 — 1620), the abundant occurrences of wetland plant (Cyperaceae) and diatom frustules imply less flood events under stable climate conditions in this period.

report that ocean sediment cores containing an «undisturbed history of the past» have been analyzed for variations in PP over timescales that include the Little Ice Age... they determined that during the LIA the ocean off Peru had «low PP, diatoms and fish,» but that «at the end of the LIA, this condition changed abruptly to the low subsurface oxygen, eutrophic upwelling ecosystem that today produces more fish than any region of the world's oceans... write that «in coastal environments, PP, diatoms and fish and their associated predators are predicted to decrease and the microbial food web to increase under global warming scenarios,» citing Ito et al..

Noteworthy is the significantly lower variance (p = 0.02) in the diatom index during the MCA when compared to that of the LIA.

That said, the continuous diatom record from El Junco in the Galápagos Islands similarly shows enhanced ENSO variability during the LIA when compared to the past millennium (not shown).

Fossil evidence shows that during past periods of natural global warming, many animals, from horses to gophers to diatoms, shrunk.

Application of the modern analog technique to marine Antarctic diatoms: Reconstruction of maximum sea ice extent during the Last Glacial Maximum