Benthic diatoms are the main component in many aquatic ecosystems such as streams, creeks and rivers, and they function as important primary producers and chemical modulators for other organisms in the ecosystems. In this study, the composition of benthic diatoms was investigated and further explored the primary physicals and chemicals affecting their temporal variations in the upper Han River,...

Climate change over the last two centuries has been associated with significant shifts in diatom community structure in lakes from the high arctic to temperate latitudes. To test the hypotheses that recent climate warming selects for species of smaller size within communities and a decrease in the average size of species within populations, we quantified the size of individual diatom valves fro...

Cells are protected by multidrug resistance transporters, which remove potentially harmful chemicals entering the cells from the environment or originating endogenously from the cellular metabolism. Multidrug resistance transporters have not been investigated so far in marine eukaryotic algae like diatoms. We investigated the uptake of a calcium-sensitive dye, Fura 2 acetoxymethylester (AM), by...

Diatoms are eukaryotic microalgae that produce species-specifically structured cell walls made of SiO(2) (silica). Formation of the intricate silica structures of diatoms is regarded as a paradigm for biomolecule-controlled self-assembly of three-dimensional, nano- to microscale-patterned inorganic materials. Silica formation involves long-chain polyamines and phosphoproteins (silaffins and sil...

[1] Biogenic silica (bSiO2) dissolution plays an important role in the marine silicon cycle, diatom production and vertical export production. An ocean ecosystem model that incorporates dependency of bSiO2 dissolution on water temperature was used to examine the effects of bSiO2 dissolution on diatom production and bSiO2 export. Diatoms dominate with higher bSiO2 dissolution rates because of en...

Citation: Rêve-Lamarche A-H, Alvain S, Racault M-F, Dessailly D, Guiselin N, Jamet C, Vantrepotte V and Beaugrand G (2017) Estimation of the Potential Detection of Diatom Assemblages Based on Ocean Color Radiance Anomalies in the North Sea. Front. Mar. Sci. 4:408. doi: 10.3389/fmars.2017.00408 Estimation of the Potential Detection of Diatom Assemblages Based on Ocean Color Radiance Anomalies in...

Citation: Meyerink S, Ellwood MJ, Maher WA and Strzepek R (2017) Corrigendum: Iron Availability Influences Silicon Isotope Fractionation in Two Southern Ocean Diatoms (Proboscia inermis and Eucampia antarctica) and a Coastal Diatom (Thalassiosira pseudonana). Front. Mar. Sci. 4:280. doi: 10.3389/fmars.2017.00280 Corrigendum: Iron Availability Influences Silicon Isotope Fractionation in Two Sout...

Phytoplankton species composition, abundance and standing stocks investigations were carried out during the First Indian Antarctic Krill Expedition (FIKEX). Nitrate, phosphate and silicate were available in sufficiently higher concentrations at Polar Front zone. Nitrate and silicate, exhibited a marked boundaries between high values in the Sub Antarctic region. Diatom dominated the phytoplankto...

The study of diatoms has diversified strongly since its beginnings in the 18th century. Early work focused upon collecting material for taxonomic analysis but by the mid 19th century a strong global perspective had already developed. In the 20th century, use of diatoms in biostratigraphy, environmental change and ecology and in biogeography proliferated as did work on diatom ultra structures, l...

Increasing Transparent Exopolymer Particle (TEP) formation during diatom blooms as a result of elevated temperature and pCO2 have been suggested to result in enhanced aggregation and carbon flux, therewith potentially increasing the sequestration of carbon by the ocean. We present experimental results on TEP and aggregate formation by Thalassiosira weissflogii (diatom) in the presence or absenc...