Selection of diatoms, SEM
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Selection of diatoms, SEM
Selection of diatoms, coloured scanning electron micrograph (SEM). Diatoms are single-celled photosynthetic algae, of which there are about 100, 000 species, forming an important part of the plankton at the base of the marine and freshwater food chains. They have mineralised cell walls (frustules) that contain pure silica coated with a layer of organic material. The frustule is divided into two parts, one of which (the epitheca) overlaps the other (the hypotheca) like the lid of a box. Frustules are either elongated, or round and radially symmetrical
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Media ID 6299911
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Alga Algae Algal Cell Wall Colored Diatom Diatoms Eukaryotic False Colour Frustule Heterokont Heterokontophyta Mineralised Photosynthetic Phytoplankton Plankton Planktonic Protection Protective Protist Protista Single Celled Specialised Stramenopiles Support Supportive Unicellular False Coloured Micro Biology Microbiological
EDITORS COMMENTS
This print showcases a stunning selection of diatoms, captured through the lens of a scanning electron microscope (SEM). These single-celled photosynthetic algae are an integral part of both marine and freshwater ecosystems, comprising approximately 100,000 distinct species. As primary producers, diatoms play a crucial role in the food chains that sustain life beneath the water's surface. What makes diatoms truly remarkable is their mineralized cell walls known as frustules. Composed primarily of pure silica coated with organic material, these intricate structures provide support and protection to the delicate organisms within. The frustule consists of two parts: the epitheca and hypotheca, resembling the lid of a box overlapping its base. Displayed here in vibrant colors, this image highlights the diversity found within diatom communities. Some possess elongated frustules while others exhibit round and radially symmetrical forms. Each unique shape serves specific ecological functions for these specialized algae. Through this mesmerizing photograph, we gain insight into the microscopic world teeming with life below our sightline. It reminds us of nature's complexity and beauty at even its smallest scale—a testament to the wonders waiting to be discovered by those who delve into scientific exploration.
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