The freshwater diatom Didymosphenia geminata, commonly known as Didymo, causes severe environmental degradation in water-courses where it blooms, producing large quantities of a brown jelly-like material called "brown snot" or "rock snot". This diatom is native to Europe and is an invasive species both in the antipodes and in parts of North ...

Jan 2, 2025 · diatom, (class Bacillariophyceae), any member of the algal class Bacillariophyceae (division Chromophyta), with about 16,000 species found in sediments or attached to solid substances in all the waters of Earth.

Diatoms are algae that live in houses made of glass. They are the only organism on the planet with cell walls composed of transparent, opaline silica. Diatom cell walls are ornamented by intricate and striking patterns of silica.

Jan 21, 2018 · Diatoms (pictured below) are a common type of unicellular phytoplankton that likely originated around the Jurassic period. Diatoms can form colonies characterized by particular shapes (e.g., stars, fans, and ribbons) and are encapsulated by a unique cell wall composed of silica, termed a frustule.

Diatoms are single-celled algae belonging to the group of eukaryotic phytoplankton that have existed for >180 million years. Present in many areas of the world, they are particularly widespread at high latitudes and in coastal ecosystems rich in nutrients (Malviya et al., 2016).

4 days ago · Diatom populations can exhibit seasonal variability influenced by environmental factors such as temperature, light availability, and nutrient levels. Observing these patterns over time may enhance your chances of correctly identifying a species: – Spring Bloom : Many diatom species proliferate during spring due to increased light and nutrient ...

Diatoms of North America provides analysts, academics and managers with tools for diatom taxonomy, nomenclature and ecology.

Apr 9, 2024 · A diatom is a tiny, single-celled algae with a hard shell made of silica, found in oceans, waterways, and soil. They play a crucial role in oxygen production, nutrient cycling, and the food web of aquatic ecosystems.

5 days ago · The diatoms are an amazing group of organisms, part of the Stremenopile lineage of life. These photosynthetic unicells (ranging from 1 µm to over 1 mm in size) have chlorophylls a and c, and a complement of accessory pigments that include xanthophylls and carotenoids, making the living cells golden-brown in color.

Diatoms are single-celled algae that live nearly everywhere there is water - streams, ponds, lakes, oceans, and even soils. Classification information, citations, links and species listings for 187 genera completed to date. Identification guides, original descriptions, citations, autecological information and more for 1089 species and growing.