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#marinescience

0 posts0 participants0 posts today
Loki the Cat

27 million tonnes of nanoplastics discovered floating in just the North Atlantic's top layer. Unlike larger microplastics that sink, these microscopic troublemakers stay suspended, infiltrating food webs through phytoplankton. It's like pollution learned to swim.

science.slashdot.org/story/25/

science.slashdot.orgMillions of Tonnes of Nanoplastics Are Polluting the Ocean - SlashdotResearchers have discovered 27 million tonnes of nanoplastics distributed across just the top layer of the temperate to subtropical North Atlantic Ocean, according to a study published in Nature. The team sampled water at three depths across 12 locations during a November 2020 research cruise, findi...
#Nanoplastics#OceanPollution#MarineScience
ScienceOpen

'UTNet: event-RGB multimodal fusion model for underwater transparent organism detection' - a new @imts_journal article on #ScienceOpen

🔎 scienceopen.com/document?vid=8

ScienceOpenUTNet: event-RGB multimodal fusion model for underwater transparent organism detection<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d3980446e126">In underwater environments, transparent organisms with low visibility and minimal visual features, lacking distinctive shadows or silhouettes, can blend seamlessly into their surroundings. Existing deep learning methods for detecting such organisms have shown unsatisfactory performance. This study proposes a multimodal fusion network, UTNet, which combines event-based and red-green-blue (RGB)-based vision for the underwater transparent camouflaged organism detection task. UTNet introduces a two-stage enhanced representation aggregation module comprising a multi-feature aggregation component (MFAC) and a deep fusion component (DFC) to facilitate the synergy between frame-based and event-based vision. First, MFAC aggregates the high dynamic range features from events with the static details from RGB images. Then, the edge information from the edge clue search module is used to guide the fusion process, reducing background interference. Next, DFC further extracts depth information from the MFAC output using five parallel branches. Additionally, a submanifold sparse convolution-modified ResNet50 backbone network is employed to extract features from event frames, preserving event sparsity and improving computational efficiency. Extensive experiments on our custom underwater transparent organism dataset, captured using the DAVIS346 event camera, demonstrate the effectiveness of UTNet. The results show that UTNet achieves 75.2% accuracy and 37.8 frames per second, providing the best trade-off between speed and accuracy compared to other detectors. </p>
#OpenScience#MarineScience#OceanResearch
nemo™ 🇺🇦

A groundbreaking new database catalogs the body sizes of marine animals, creating a vast "library of life" 🌊🐋. This resource will help scientists better understand ocean biodiversity and the impacts of climate change. Dive into the details here: arstechnica.com/science/2025/0 #MarineScience #Biodiversity #OceanResearch
#newz

Ars Technica · New body size database for marine animals is a “library of life”By Jennifer Ouellette
Brad Rosenheim

Freezing a CO2 sample into a glass ampoule with titanium hydride and zinc hydride, with another ampoule inside that contains iron. This is done with liquid nitrogen in a styrofoam cup because we have to seal the ampoule with flame and these cups can be sacrificial if torchwork is sloppy.

We later heat these ampoules up to a point when hydrogen gas is produced by the hydrides. The hydrogen and carbon dioxide gases bounce molecularly around the chamber and when both molecules find themselves in proximity of the iron surface at the same time, they form water and graphite (solid). The end result is graphite that can be packed into an aluminum cathode (with the iron) and ultimately sputtered with a cesium ion beam in vacuum to form a negative carbon ion beam that is accelerated through a mass spectrometer to count the ration of 14C to 12C (radiocarbon dating).

The original sample here was mangrove peat, which are measuring to determine the ability of mangroves to pump atmospheric CO2 down to deeper depths of mangrove peat.

#science
#VacuumSeparations
#ClimateChange
#CarbonCycle
#MarineScience
#EarthScience

formuchdeliberation

‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study | Ocean acidification | The Guardian…

The world’s #oceans are in worse health than realised, scientists have said today, as they warn that a key measurement shows we are “running out of time” to protect marine #ecosystems.... #oceanacidification #climatechange #greenhousegases #marinescience #coastlines #habitats #coralreefs

formuchdeliberation.wordpress.

for much deliberation · ‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study | Ocean acidification | The Guardian…The world’s #oceans are in worse health than realised, scientists have said today, as they warn that a key measurement shows we are “running out of time” to protect marine #ecosystems…. …
Warren Currie 🦠🦐

Congratulations on the retirement of Bill Curry after 13 years as head of the Bermuda Institute of Ocean Sciences, following an already amazing, full career at Wood's Hole Oceanographic Insitution where he was a leader in marine geology, #climate and #carbon cycling research.
#oceanography #marinescience
bernews.com/2025/06/bill-curry

Bernews · Bill Curry To Retire After 13 Years With BIOS - BernewsBill Curry is retiring after 13 years leading BIOS, during which he expanded its global reach and strengthened its research and education programs. A spokesperson said, “Bill Curry, who has strengthened the global impact of the Bermuda Institute of Ocean Sciences by expanding research and education efforts, positioning the island as a key player in …
formuchdeliberation

‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study | Ocean acidification | The Guardian…

The world’s #oceans are in worse health than realised, scientists have said today, as they warn that a key measurement shows we are “running out of time” to protect marine #ecosystems.... #oceanacidification #climatechange #greenhousegases #marinescience #coastlines #habitats #coralreefs

formuchdeliberation.wordpress.

for much deliberation · ‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study | Ocean acidification | The Guardian…The world’s #oceans are in worse health than realised, scientists have said today, as they warn that a key measurement shows we are “running out of time” to protect marine #ecosystems…. …
Knowable Magazine

Few animals seem less animal-like than sea cucumbers. The long, slender beings often appear motionless like the vegetable they resemble as they bask on the seafloor. They lack a brain, eyes or obvious features apart from a mouth and anus. But there’s a lot more to these simple creatures than meets the eye. knowablemagazine.org/content/a #MarineScience #KnowableMagazine #ScienceMastodon

Knowable Magazine | Annual ReviewsWeird and wondrous sea cucumbersThese spiny or slimy ocean creatures display an astonishing diversity of appearances, behaviors and lifestyles. Many are increasingly threatened.
Flipboard Science Desk

A new study published in the journal Frontiers in Marine Science, has uncovered evidence of far-reaching ecosystem consequences following the disappearance of great white sharks from False Bay, South Africa. Phys.org reports:
phys.org/news/2025-03-ecosyste

Phys.org · Ecosystem disrupted following the disappearance of great white sharks, study findsBy Rosenstiel School of Marine, Atmospheric, and Earth Science
#GreatWhiteShark#SouthAfrica#Ecosystem
Garrett Sharpe
It may not look like much, but the light coloring on this little piece of filter paper is around 2 billion marine bacteria. While I've been out sailing along Line P, I'm trapping bacteria on these slips of paper by pumping water through the tiny little holes in the paper that are smaller than the bacteria but large enough for water to slip through. Once I get these to the lab, I can pop the bacteria open to collect their DNA and see who lives in the water and what they can do.

#science #scientist #marinescience #marinebiology #biology #microbiology #bacteria #pacificocean #environment #water
#water
formuchdeliberation

10 New Sponge Species Discovered in Hawai’i’s Hidden Reefs…

Hawai’i researchers have identified ten new sponge species in Kāneʻohe Bay, emphasizing their ecological importance in coral reef ecosystems. Their findings reveal hidden biodiversity and highlight the need for further study... #biodiversity #marinescience #spongespecies #coralreefs

formuchdeliberation.wordpress.

for much deliberation · 10 New Sponge Species Discovered in Hawai’i’s Hidden Reefs…Hawai’i researchers have identified ten new sponge species in Kāneʻohe Bay, emphasizing their ecological importance in coral reef ecosystems. Their findings reveal hidden biodiversity and highlight…
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