WebDec 18, 2024 · Abstract. Diatoms sustain the marine food web and contribute to the export of carbon from the surface ocean to depth. They account for about 40% of marine primary productivity and particulate ... Diatom cells repeatedly and reliably manufacture valves of various shapes and sizes, potentially allowing diatoms to manufacture micro- or nano-scale structures which may be of use in a range of devices, including: optical systems; semiconductor nanolithography; and even vehicles for drug delivery. See more A diatom (Neo-Latin diatoma) is any member of a large group comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a … See more Diatoms are generally 2 to 200 micrometers in size, with a few larger species. Their yellowish-brown chloroplasts, the site of … See more Most centric and araphid pennate diatoms are nonmotile, and their relatively dense cell walls cause them to readily sink. Planktonic forms in open water usually rely on turbulent mixing of the upper layers of the oceanic waters by the wind to keep them suspended in … See more Distribution Diatoms are a widespread group and can be found in the oceans, in fresh water, in soils, and on damp surfaces. They are one of the dominant components of phytoplankton in nutrient-rich coastal waters and during … See more Diatoms are protists that form massive annual spring and fall blooms in aquatic environments and are estimated to be responsible for about half of photosynthesis in … See more Diatom cells are contained within a unique silica cell wall known as a frustule made up of two valves called thecae, that typically overlap one … See more Reproduction and cell size Reproduction among these organisms is asexual by binary fission, during which the diatom divides into … See more

Freshwater Algae: Diatoms: Page 1. Introductory text

WebApr 13, 2024 · Diatoms are one of the main species of interest due to their possible impact on the maintenance of ecosystems, as well as their photosynthetic capacity and biotechnological applications. Reliable, easy, rapid identification of diatoms remains a highly desirable goal to avoid the difficulty for experts in the visual analysis of frustules; a … WebJul 20, 2024 · Culverhouse et al. extracted contour features and morphological curvature features of diatom images for comparative classification experiments, based on K-Nearest Neighbor (KNN) and decision tree. Deng et al. aimed to detect diatoms with complex backgrounds. Local binary pattern (LBP), primary component analysis (PCA), and other … diamond art frogs

Influence of diatom diversity on the ocean biological carbon pump …

WebLight microscopic image of Arctic ice diatoms: Melosira arctica with ephytic diatoms. Unicelluar algae are the main primary producers in sea ice. More than 200 diatom species are known to grow in Arctic ice. Melosira arctica may grow within the brine channels, but also attaches to the bottom of ice floes. (Photo courtesy of Rolf Gradinger). WebThe following images are of a representative selection of diatoms aimed at giving a general overview of the different morphotypes. Each specimen is given a generic and if possible … Webdiatom, pinnularia species, micrograph - diatoms stock pictures, royalty-free photos & images diatom, sem - diatoms stock illustrations mediterranean marine plankton … circle k speed street 2018 charlotte nc pet