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What are Phytoplankton and Why Are They Important?

Breathe deep… and thank phytoplankton.

Why? Like plants on land, these microscopic creatures capture energy from the sun and carbon from the atmosphere to produce oxygen.

Phytoplankton are microscopic organisms that live in watery environments, both salty and fresh. Though tiny, these creatures are the foundation of the aquatic food chain. They not only sustain healthy aquatic ecosystems, they also provide important clues on climate change.

Let’s explore what these creatures are and why they are important for NASA research.

Phytoplankton are diverse

Phytoplankton are an extremely diversified group of organisms, varying from photosynthesizing bacteria, e.g. cyanobacteria, to diatoms, to chalk-coated coccolithophores. Studying this incredibly diverse group is key to understanding the health - and future - of our ocean and life on earth.

Their growth depends on the availability of carbon dioxide, sunlight and nutrients. Like land plants, these creatures require nutrients such as nitrate, phosphate, silicate, and calcium at various levels. When conditions are right, populations can grow explosively, a phenomenon known as a bloom.

Phytoplankton blooms in the South Pacific Ocean with sediment re-suspended from the ocean floor by waves and tides along much of the New Zealand coastline.

Phytoplankton are Foundational

Phytoplankton are the foundation of the aquatic food web, feeding everything from microscopic, animal-like zooplankton to multi-ton whales. Certain species of phytoplankton produce powerful biotoxins that can kill marine life and people who eat contaminated seafood.

Phytoplankton are Part of the Carbon Cycle

Phytoplankton play an important part in the flow of carbon dioxide from the atmosphere into the ocean. Carbon dioxide is consumed during photosynthesis, with carbon being incorporated in the phytoplankton, and as phytoplankton sink a portion of that carbon makes its way into the deep ocean (far away from the atmosphere).

Changes in the growth of phytoplankton may affect atmospheric carbon dioxide concentrations, which impact climate and global surface temperatures. NASA field campaigns like EXPORTS are helping to understand the ocean's impact in terms of storing carbon dioxide.

Phytoplankton are Key to Understanding a Changing Ocean

NASA studies phytoplankton in different ways with satellites, instruments, and ships. Upcoming missions like Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) - set to launch Jan. 2024 - will reveal interactions between the ocean and atmosphere. This includes how they exchange carbon dioxide and how atmospheric aerosols might fuel phytoplankton growth in the ocean.

Information collected by PACE, especially about changes in plankton populations, will be available to researchers all over the world. See how this data will be used.

The Ocean Color Instrument (OCI) is integrated onto the PACE spacecraft in the cleanroom at Goddard Space Flight Center. Credit: NASA

FOTD #071 : red coral fungus! (ramaria araiospora)

red coral is a coral mushroom in the family gomphaceae. :-) it is found in the himalaya & north america. it grows either in clusters or singularly, & prefers western hemlock & tanoak. it likely forms a mycorrhizal association !!

the big question : can i bite it?? it is edible & sold as food in mexico :-) though, overconsumption can cause stomach upset.

r. ariospora description :

"the fruit bodies of ramaria araiospora typically measure 5–14 cm (2–5+1⁄2 in) tall by 2–10 cm (3⁄4–3+7⁄8 in) wide. there is a single, somewhat bulbous stipe measuring 2–3 cm (3⁄4–1+1⁄8 in) long by 1.5–2 cm (5⁄8–3⁄4 in) thick, which is branched up to six times. the branches are slender, usually about 1–5 mm (1⁄16–3⁄16 in) in diameter, while branches near the base are thicker, up to 4 cm (1+5⁄8 in) thick. the terminal branches are forked or finely divided into sharp tips. the trama is fleshy to fibrous in young specimens, but becomes brittle when dried. the branches are red initially, fading to a lighter red in maturity, while the base, including the stipe, is white to yellowish-white. branch tips are yellow."

[images : source & source] [fungus description : source]

"i love this fungus so much<3 she's SO pretty. i only learnt about it recently."

The shape of a fish's caudal tail can tell you a lot about how fast the fish moves! A rounded tail is the slowest and a lunate tail is the fastest! The lunate tail has the most optimal ratio of high thrust and low draw, making it the fastest.

Ichthyology Notes 2/?

just some very Shaped things

Matcha-microbiology 🧪

Enzyme Function Prediction from Amino Acid Sequence: How AI is Leading the Way

New AI tool 'CLEAN' predicts enzyme functions from amino acid sequences, even for unstudied or poorly understood enzymes.

An innovative artificial intelligence program called CLEAN (contrastive learning–enabled enzyme annotation) has the ability to predict enzyme activities based on their amino acid sequences, even if the enzymes are unfamiliar or inadequately understood. The researchers have reported that CLEAN has surpassed the most advanced tools in terms of precision, consistency, and sensitivity. However, a deeper understanding of enzymes and their roles would be beneficial in a number of disciplines, including genetics, chemistry, pharmaceuticals, medicine, and industrial materials.

The scientists are using the protein language to forecast their performance, similar to how ChatGPT uses written language data to generate predictive phrases. Almost all scientists desire to comprehend the purpose of a protein as soon as they encounter a new protein sequence. Furthermore, this tool will aid researchers in promptly recognizing the suitable enzymes needed to manufacture chemicals and materials for various applications, be it in biology, medicine, or industry.

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When sodium hypochlorite (bleach) solution is added to luminol, a chemical reaction occurs that releases energy in the form of light. This is called chemiluminescence. The bleach solution acts as an oxidizing agent, which means it takes electrons away from the luminol molecule. This causes the luminol molecule to become excited, and it releases the energy as light.

🎥 Courtesy: Kendra Frederick

The luminol molecule is made up of two amino groups, a carbonyl group, and an azo group. The amino groups are electron-rich, while the carbonyl group is electron-poor. The azo group is a conjugated system, which means that the electrons in the double bonds can move freely from one atom to another.

When sodium hypochlorite (bleach) solution is added to luminol, the bleach molecules react with the amino groups of the luminol molecule. This reaction takes electrons away from the luminol molecule, which causes the luminol molecule to become oxidized. The oxidized luminol molecule is in an excited state, which means that it has more energy than it normally does.

The excited luminol molecule then releases the extra energy as light. This light is called chemiluminescence. The light emitted by the chemiluminescence reaction is blue because the luminol molecule has a blue fluorescence.

The chemiluminescence reaction between luminol and sodium hypochlorite is catalyzed by the presence of a metal ion, such as iron or copper. The metal ion helps to stabilize the excited state of the luminol molecule, which makes it more likely to release the extra energy as light.

The chemiluminescence reaction is very sensitive to impurities, so it is important to use pure chemicals. The reaction can also be affected by the pH of the solution. The optimal pH for the reaction is around 9.

The chemiluminescence reaction between luminol and sodium hypochlorite can be used to detect blood, as the iron in hemoglobin can catalyze the reaction. The reaction is also used in some commercial products, such as glow sticks and emergency lights.

I hope you enjoyed learning about this. ❤️🙏

Was watching an online Mycology lecture, blacked out and came to with this on my screen

*Cryptomycota is a phylum of the Fungi family, but honestly not explaining that kinda makes this post funnier

i didn’t notice while i was taking this photo of some Cortinarius sp. mushrooms, but creeping up their stipes is some plasmodial slime mold !! i wish i had realised and gotten a better shot of it

FOTD #073 : apricot jelly! (guepinia helvelloides)

apricot jelly (AKA salmon salad & red jelly fungus) is a saprobic jelly fungus in the family exidiaceae. it often grows in small tufts in the soil :-) it is found in canada, the US, mexico, iran, turkey, brazil, puerto rico, china & most parts of europe.

the big question : can i bite it?? yes !! it is edible but bland.

g. helvelloides description :

"the fungus produces salmon-pink, ear-shaped, gelatinous fruit bodies that grow solitarily or in small tufted groups on soil, usually associated with buried rotting wood. the fruit bodies are 4–10 cm (1.6–3.9 in) tall & up to 17 cm (6.7 in) wide; the stalks are not well-differentiated from the cap."

[images : source & source] [fungus description : source]