نتایج جستجو برای: diatoms
تعداد نتایج: 5070 فیلتر نتایج به سال:
Marine diatoms are silica-precipitating microalgae that account for over half of organic carbon burial in marine sediments and thus they play a key role in the global carbon cycle. Their evolutionary expansion during the Cenozoic era (66 Ma to present) has been associated with a superior competitive ability for silicic acid relative to other siliceous plankton such as radiolarians, which evolve...
Diatoms include a great diversity of taxa and are recognized as powerful bioindicators in rivers. However using diatoms for monitoring programs is costly and time consuming because most of the methodologies necessitate species-level identification. This raises the question of the optimal trade-off between taxonomic resolution and bioassessment quality. Phylogenetic tools may form the bases of n...
Surface seawater and phytoplankton samples were collected from different stations covering the areas of six harbors in Egyptian Red Sea during 2019–2021. The obtained results revealed 119 species, including 80 species diatoms, 27 dinoflagellates, both cyanophytes chlorophytes. Diatoms such as
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