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#plankton

3 posts3 participants0 posts today
Public
Tino Eberl

Tief im #Labradorsee erforscht ein Netzwerk autonomer Roboter, wie #Plankton und „mariner Schnee“ #CO2 langfristig im Ozean speichern.

Das Projekt #ReBELS nutzt Kameras, Gleiter und #Messbojen, um die biologische #Kohlenstoffpumpe ganzjährig zu beobachten.

Mithilfe von #KI analysieren die Systeme Partikelgrößen und #Sinkgeschwindigkeiten, um #Klimamodelle zu verbessern. Ziel ist es, besser zu verstehen, wie viel #Kohlenstoff im Meer bleibt.

earth.com/news/marine-robots-a

Earth.comMarine robots are exploring the ocean's role in climate controlA robotic fleet in the Labrador Sea is tracking sinking carbon to reveal how the deep ocean helps regulate Earth’s climate.
#Klimaforschung
Public
Warren Currie 🦠🦐

Weekend #Plankton Factoid 🦠🦐
Light is an extremely important factor in the oceans. It governs not only photosynthesis, but is also an important cue for vertically migrating zooplankton and needed for visual predation. The finding that 20% of the #oceans, especially at vital polar regions, are increasingly murky over the last 20 years is very worrying. Over 9% had the photic zone reduced by more than 50 m. This will impact #phytoplankton growth and #carbon flux. #science
scitechdaily.com/21-of-the-oce

image/jpeg diffused rays of sunlight are seen from underwater with a lone transparent jellyfish floating in the light column. Photo from Pexels, CC Freerange.
Continued thread
Public
Flipboard

One way to track what’s happened on Earth during past periods of drastic climate change is to examine fossils, but, says @KnowableMag, “the fossil record for most species is spotty.” Enter planktonic foraminifera, a unicellular marine organism that first appeared on Earth about 100 million years ago. Nine out of 10 species went extinct when an asteroid hit 66 million years ago. It took 10 million years for species diversity to recover. Tim Vernimmen takes a look at what that can teach us about the past — and future.

flip.it/G63zRy

Knowable Magazine | Annual ReviewsThe history of the ocean, as told by tiny beautiful fossilsBountiful remains of foraminifera reveal how organisms responded to climate disturbances of the past. They can help predict the future, too.
#MarineLife#Paleontology#Palaeontology
Public
Speckdäne

#idw #Climate Marine heatwaves pose problems for coastal #plankton

Temperatures around the world continue to rise – and the #NorthSea is no exception. Yet, in addition to this gradual #warming, increasingly frequent and intense heat events also have consequences for marine organisms. When heatwaves are added, however, these alterations are amplified. The results have been published in three publications, most recently in #Limnology and #Oceanography.
Link: idw-online.de/en/news852704

idw-online.deMarine heatwaves pose problems for coastal plankton
Public
Warren Currie 🦠🦐

Weekend #Plankton Factoid 🦠🦐
There is a giant, vibrantly blue, 9 meter tall, 20 tonne interactive #sculpture celebrating stromatolites (fossil cyanobacteria) in Cornwall, England. The Eden Project houses this fantastic piece of art by Azusa Murakami and Alexander Groves called "infinity blue" made of local clay to celebrate how #cyanobacteria transformed the Earth's early atmosphere by forming oxygen through photosynthesis (represented as huge vapour rings). #art #science
designboom.com/art/studio-swin

image/jpeg a man and a woman stand in a large space in front of a giant blue sculpture shaped like three stacked balls, which is emitting large vapour rings. Photo from Studio Swine.
Public
Warren Currie 🦠🦐

Weekend #Plankton Factoid 🦠🦐
Plankton is fundamental to the functioning of aquatic #ecosystems. An example was seen in the 2013 deaths of #Florida bottlenose dolphins. Dense harmful phytoplankton #blooms from excess nutrients in the Indian River lagoon shaded out seagrass and shifted the composition of forage fishes from Ladyfish to the not as energy rich Sea Bream. The #dolphins became malnourished and more susceptible to stress from toxins and #ClimateChange. #Science
frontiersin.org/news/2025/04/0

image/jpeg a sleek, grey, bottlenosed dolphin comes partially out of the water with a fish captured it in its mouth. Photo from Sarasota Dolphin Research Program. https://sarasotadolphin.org/tangled-food-web/
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
I've always been impressed by this video from New Scientist about #copepods, the planet's most abundant multicellular organism, with interviews from several UK universities, including Exeter and Southampton. Prof Daniel Mayer & others give a lovely explaination on why these #zooplankton, and their poo, are so important to the #ocean ecosystem and #carbon cycling, and why #ClimateChange size shrinkage could have such an impact. #Science 🎥
youtu.be/60DRMH9QdV4

image/jpeg a caption of "Why Zooplankton are Ocean Carbon Heros" with the NS logo of New Scientist. Translucent torpedo shaped copepod zooplankton are seen in the image against a black background.
Public
JanPV

If you're wondering about purchasing what appears to be a good value plankton net from Indian suppliers on E-bay, don't bother!

Mine arrived with a fabulous ~2mm mesh size(!) and even bigger holes as a result of damage or poor manufacture.

#biology#plankton
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
Zooplankton are often described as "food food" for good reasons. They are often the primary pathway to #fishes from algae. This is true on #coral reefs with fishes like Fusiliers having fast streamlined bodies and forked tail, large eyes for spotting small prey, and extendable jaw for suction-feeding. But it turns out planktivorous fishes are much more diverse in body form, which is driven more by the habitat they live in.
theconversation.com/we-study-p
#Science #evolution

image/jpeg a scuba diver swims above rocky coral amongst a school of bright blue fishes outlined with bands of vibrant yellow including on their distinctive forked tail. Photo: Richard Ling, CC BY-SA 2.5.
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
It would be a cool superpower to just take a bite out of another organism and absorb its special power 🦸‍♂️. Some microbial plankton have been doing this for a long time, engulfing entire algal cells (photosymbiosis), or selectively stealing algal chloroplasts for photosynthesis (kleptoplastidy). An Antarctic dinoflagellate has now been shown to steal plastids from Phaocystis algae to amp up their own photosynthesis. 🌞
sciencedirect.com/science/arti
#Science #ecology

image/jpeg a diagram of a cell (Host Ross Sea Dinoflagellate) showing a mosaic of algal plastids, nucleus, and mitochondria alongside the host mitochondria in various colours. The much smaller prey, Phaeocystis antarctica, is shown intact as a separate diagram where the plastids are significantly smaller in size. Figure from Rao et al. 2025 https://doi.org/10.1016/j.cub.2025.03.076
Public
MARUM_Uni Bremen

⚓ Ahoi und Anker gelichtet, los geht die Expedition #MSM136 Richtung Schelfgebiet vor der Westküste Irlands.

Was passiert mit abgestorbenem #Plankton, #Sedimenten und winzigen #Plastikpartikeln, wenn sie von der Meeresoberfläche auf den Grund sinken? Diese und andere Fragen stehen im Mittelpunkt der MARUM-Expedition #LONTRA, die heute an Bord des Forschungsschiff MARIA S.MERIAN in See gestochen ist.

Mehr Infos dazu hier ➡️ marum.de/MSM136start.html

Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
The early phytoplankton fossil record is spotty, and often difficult to interpret being tiny and delicate. Recently, colonial algae fossils were identified from Canadian deposits with geometrically connected cells referred to as coenobia from the Cambrian period (~500 MA). Previously, these were thought to be resting cysts of a group called acritarchs. Instead, this colonial form is similar to existing green algae such as Pediastrum.
royalsocietypublishing.org/doi
#Science

image/jpeg a microscope photograph of a set of hexagonal brown coloured cells connected in a mesh. Photo Thomas Harvey.
image/jpeg a microscopic photograph of a circular colony of bright green interconnected cells that have distinctive U-shaped spiky cells on the perimeter. Pediastrum, Andrei Savitsky CC BY 4.0.
Public
ISEP

New #ISEPpapers! Hijacking and integration of algal #plastids and #mitochondria in a polar planktonic host: Ananya Kedige Rao et al. cell.com/current-biology/fullt

"Hosts steal active plastids, mitochondria, and nuclei from the microalga #Phaeocystis... Stolen plastids increase in volume, and their photosynthetic activity is boosted... Stolen mitochondria transform into a network in close association with plastids"

figure from the paper showing various views of the discussed microbial cell
#Microbes#Algae#Protists
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
When a species has no close relatives, with only a single unique species within a genus, we refer to it as a monospecies or monotypic genus. Well-known, often strange examples include the aardvark and platapus. Zooplankton also have these, some being quite contentious because they are often phenotypically plastic (variable features) but are genetically similar. Bythotrephes longimanus, a Great Lakes invader is one of these.
nature.com/articles/s41598-021
#Science #genetics

A microscope image of a crustacean zooplankton with a bulky body, a large distinct black eye, and three very black balls on its back. An extremely long very spiny tail extends from it. Spiny Waterflea, Bythotrephes longimanus. Photo Kelly Bowen, DFO. CC BY-SA 3.0.
Public
Lukas VFN 🇪🇺

Amazing diversity of shapes found among #plankton-feeding fishes theconversation.com/we-study-p paper by Isabelle Ng et al.: link.springer.com/article/10.1

"Some truly fit the typical plankton-feeding #fish model with a forked tail, torpedo-shaped body, large eyes, small extendable jaws. But most others break the mould entirely. Tiny #gobies cling onto whip corals & adopt a sit-and-wait approach for plankton to pass by. Other deep-bodied #damselfishes depart a small distance from their coral hosts to feed."

underwater photo of a group of bright pink fish at a coral reef
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
With spring 🌱 upon us in the northern hemisphere, it is the time for the spring bloom in many lakes and oceans. To grow, #phytoplankton require #nutrients and #light, so start reproducing rapidly due to an abundance of nutrients mixed in the water column and increased light intensity 🌞. Zooplankton grazers have yet to increase, and warming conditions help to retain algae near the surface euphotic zone via stratification.
serc.carleton.edu/eet/phytopla
#Science #climate

image/jpeg vibrant varied colours of green are seen in the ocean off the coast of Alaska in this satellite image. NASA. Public domain.
image/jpeg a graphic diagram of the spring bloom showing the winter sun low on the horizon and only some algae. An arrow with "growing" shows more algae in spring as the sun is higher in the sky with deep mixing down to depth. In later spring the mixed layer is compressed to closer to the surface, concentrating the algae. Source: Julie Sansoulet / Takuvik, Université Laval
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