Sentences with phrase «diatom growth»

Volumes (800 ml) were added to triplicate polycarbonate bottles and spiked with an f / 50 nutrient derivative (10 µm NaNO3 −, 0.8 µm NaH2PO43 −, 10 µm Na2SiO3 and f / 50 vitamin and trace metal concentrations [27,28]-RRB- to promote diatom growth.

However, elevated atmospheric CO2 concentrations and ocean acidification may also have an adverse impact on diatom growth, causing a decrease in cell size and possible further changes in phytoplankton composition.

If diatom layers are a major factor, then understanding where paleoclimate conditions may have favored diatom growth might help reveal potential mega-slide sites.

Not exact matches

Among their findings: in streams with the amphetamine addition, the growth of biofilms was significantly suppressed, the composition of bacterial and diatom communities changed, and aquatic insects emerged earlier.

Unlike most regions of the global ocean which do not contain sufficient nitrogen or phosphorus for sustained phytoplankton growth, diatoms in the remote waters of McMurdo Sound were starving from lack of iron and deficiency of vitamin B12.

Thus any process which tends to favor the growth of organisms made from silicate, such as diatoms, over organisms made from carbonate, such as the coccolithophorids, will tend to lower the atmospheric CO2 concentration — and vice versa — even if the total organic biomass formed in the surface layer and sinking from that layer remains constant.

The predicted continuous warming trend of the ocean surface temperature is expected to favour the growth of smaller phytoplankton cells (picophytoplankton replacing large diatoms) that in turn would also favour small - sized zooplankton species (Li et al. 2009).