Ocean Sustainability
Over 70% of the earth is covered in water, which serves as a vital resource human subsistence. Contamination and acidification pose major threats to aquatic health and biodiversity. Microbes offer a promising solution in their ability to breakdown contamination from oil spills and plastics. Applied microbiologists can play a significant part in understanding biodiversity, contributing to solutions, and encouraging stewardship.
Coral calcification benefits from human hormone injections
Researchers have identified how thyroxine, a human thyroid hormone, can positively influence the life-critical calcification in soft corals, and have developed a unique technique for injecting molecules into coral tissues.
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Chemists boost the efficiency of a key enzyme in bacterial photosynthesis
Chemists have shown that they can greatly enhance a version of the photosynthesis enzyme rubisco found in bacteria from a low-oxygen environment. Using directed evolution, they identified mutations that could boost rubisco’s catalytic efficiency by up to 25 per cent.
Algae of polar origin may impact tropical ocean biogeochemistry and food webs
A single-celled algae genus may have a big impact on how the world’s chemical building blocks cycle between living things and the non-living environment. Polarella was thought to be restricted to polar cap regions, but turns out to be abundant in the tropical Pacific ocean.
When sunscreen meets plastic: a newly discovered threat to marine ecosystems
The chemical Ethylhexyl Methoxycinnamate - found in sunscreen - could be slowing the degradation of discarded plastic in our seas, and may be helping biofilm bacteria – which have a greater protection from harsh conditions – to thrive.
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Drones reveal extreme coral mortality after bleaching
New research has revealed alarming coral mortality rates of 92 per cent after last year’s bleaching event at Lizard Island on Queensland’s Great Barrier Reef, marking one of the highest coral mortality rates ever documented globally.
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Frozen, but not sealed: algal traces reveal that Arctic Ocean remained open to life during ice ages
For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ice ages. Now a new study challenges this idea as the research team found no evidence for the presence of a massive ~1km ice shelf. Instead, the Arctic Ocean appears to have been covered by seasonal sea ice.
New study highlights neglected dynamics of coral and algae energy use
A new study has challenged a long-standing oversight in coral reef science, revealing that respiration in corals and algae varies significantly throughout the day, rather than remaining constant. It reveals that respiration rates in reef organisms are highly dynamic, peaking in the afternoon several hours after the height of photosynthesis.
New research reveals how octopus uses arms to sense chemical clues from microbes
A new study reveals what the octopus is feeling when it ‘tastes’ the seafloor— biochemical information from the microbial world. The animal uses its arms to determine whether prey is safe to eat or whether unhealthy eggs should be ejected from the nest.
Northward jet stream shift hits phytoplankton in the Mediterranean Sea
In just over 20 years, the northward shift of the subtropical jet stream — a high-altitude airflow — caused by climate change has reduced primary production in the northwestern Mediterranean by about 40%, affecting the base of the marine food web.
Microbiome stability shapes how corals withstand extreme heat
A new study reveals why some corals resist bleaching while others don’t: the answer lies in a complex partnership between corals and their microbial allies, shaped by the history of the waters they inhabit.
Gifts from the sea: Molecules derived from coral may help fight harmful bacteria
Pus, strep throat, and even tuberculosis—most infectious diseases are characterized by a cluster of pathogenic bacteria that can be stubborn and resistant to antibiotics. Researchers have found another method to combat these bacteria using naturally sourced molecules found in corals.
Fish ‘beauty salons’ offer insight into how microbes move within reefs
A new study highlights the potential impact of cleaner fish in coral reefs and the need to demystify their role in shaping reef microbial diversity and transmission.
Coral Art: Drawing out the secrets of coral reef resilience to high ocean temperatures
A researcher uses her art to explain how corals from more variable ocean environments may be better equipped to survive rising ocean temperatures than corals from more stable environments.
Scientists discover 230 new giant viruses that shape ocean life and health
Using high-performance computing methods, researchers have identified 230 novel giant viruses in publicly available marine metagenomic datasets and characterized their functions.
Diatoms could be key to creating farming systems on the Moon
Diatoms hold immense potential to revolutionize space agriculture, offering a transformative solution for sustainable extraterrestrial ecosystems and a key role in enabling humanity to establish sustainable living environments on the Moon and other planets, a new study argues.
Research reveals that probiotics slow spread of deadly disease decimating Caribbean reefs
Scientists with the Smithsonian’s National Museum of Natural History have discovered that a bacterial probiotic helps slow the spread of stony coral tissue loss disease (SCTLD) in already infected wild corals in Florida. The findings, published today in the journal Frontiers in Marine Science, reveal that applying the probiotic treatment ...
Study resolves diatom tree of life - and could offer clues to Earth’s puzzle
A new study finds that diatoms evolved slowly for the first 100 million years of their existence. Then, 170 million years ago, they reached an inflection point characterized by a burst of rapid speciation orders of magnitude faster than anything that had preceded it.
Nitrogen loss on sandy shores: The big impact of tiny anoxic pockets
Denitrification in tiny anoxic pockets on sand grains could account for up to one-third of total nitrogen loss in silicate shelf sands, a new study reveals.
Researchers uncover a unique light-harvesting structure in marine algae
Scientists conducted a high-resolution analysis of a photosynthetic complex found in a marine alga, Chrysotila roscoffensis. The photosystem II–FCPII complex could shape the future of artificial photosynthesis.
AMI prizewinner Raquel Peixoto reveals how coral symbionts are key to tolerating rising temperatures
Marking World Coral Reef Day on June 1, AMI’s Rachel Carson Prize winner Professor Raquel Peixoto reveals how the ability of corals to tolerate rising temperatures is determined by the type of microorganisms that live inside them.
Researchers discover unusual new marine flagellate
A newly discovered species of unicellular organism found in seawater belongs to the protist group Endomyxa and is notable for possessing a persistent flagellum — the first recorded instance of such a flagellate within this group.
Affordable real-time sensor system for algal bloom detection
Engineers have developed a real-time, low-cost algal bloom monitoring system utilizing inexpensive optical sensors and a novel labeling logic. The system achieves higher accuracy than state-of-the-art AI models such as Gradient Boosting and Random Forest.
Rock record reveals oxygenation of ocean may have happened earlier than we thought
Researchers uncover evidence that oxygenation in the ocean—crucial for life as we know it—may have occurred earlier than previously thought, offering new insights into the evolution of our planet.