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.
The leading causes of mass mortality events in sea urchins are pathogens, storms, and extreme temperatures
Researchers have identified the primary drivers of sea urchin mass mortality events over recent decades: pathogens, storms, and extreme temperatures. The team have developed an innovative method for genetic sampling in marine environments - using a swab similar to a COVID-19 test, to enable rapid and non-invasive monitoring of marine animals and underwater disease outbreaks.
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Predicting the development of biological communities in different kinds of ecosystems
Researchers tested a mechanistic consumer-resource model and confirmed its high predictive capacity. Using the model, the researchers refined current rules on the coexistence of species, too. Their findings can be applied to any situation in which communities of organisms compete for resources.
Imaging reveals bacterial symbionts in the ovaries of tiny, aquatic crustaceans
Researchers have imaged a heritable form of bacterial symbiosis inside the reproductive system of tiny crustaceans known as ostracods. Bacteria from the genus Cardinium live inside the egg cells and tissues of ostracod ovaries, transmitted from mothers to offspring.
Summer studentship: Jonas investigates how metals influence bacterial ecosystems
Jonas Flohr from Portsmouth reports back on his AMI-sponsored summer studentship at Durham University investigating how metals influence bacterial ecosystems.
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Tiny diatoms, big climate impact: How microscopic skeletons rapidly shape ocean chemistry
Researchers have found that diatoms’ intricate, silica-based skeletons transform into clay minerals in as little as 40 days. Until the 1990s, scientists believed that this enigmatic process took hundreds to thousands of years.
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Sea stars show surprising resilience after disease outbreak
A decade after sea star wasting disease devastated ochre sea star populations along the U.S. West Coast, new research suggests that the epidemic shifted populations from a stable, adult-dominated state to one marked by fluctuations in sea star sizes and ages.
Upwelling promotes N-fixing symbiont of Sargassum algae - giving it an edge
An international research team has uncovered the main mechanism behind the algae blooms of the Great Atlantic Sargassum Belt. Identification of the climatic conditions that facilitate this phenomenon allows them to predict future stranding events of Sargassum.
Study unravels Black Sea nitrous oxide conundrum
A new study unravels the ’Black Sea nitrous oxide conundrum’, investigating why large amounts of nitrous oxide are mainly produced in ocean areas that lack oxygen, yet the Black Sea - the world’s largest anoxic basin - appears to emit only little N2O.
New approach expands possibilities for studying viruses in the environment
A new method vastly improves on the existing approach for single-cell genetic sequencing, enabling scientists to read the genomes of individual cells and viral particles in the environment more quickly, efficiently, and cost-effectively.
How algae help corals bounce back after bleaching
A $1.1 million project will uncover how reefs regain life-giving algae after suffering from heat stress. The three-year project will use advanced imaging and living experimental systems to learn what’s happening on a cellular level when algae return to bleached reefs.
Unprecedented decline in marine viruses in the western Mediterranean linked to climate change revealed
Researchers have described a sustained and unprecedented decrease in the abundance of marine viruses in the northwestern Mediterranean over the last two decades. The findingis based on the longest-known time series data on marine viruses to date.
Bacteria reveal how climate-damaging nitrous oxide forms in the ocean
Marine microorganisms produce large amounts of nitrous oxide, a highly potent greenhouse gas. Researchers investigated the exact processes involved during an expedition to the Pacific. The results are important for climate modeling.
Fats provide clues to life at its limits in the deep sea
Extreme conditions on the ocean floor include high pressures and salinities, as well as extreme pH values and a limited supply of nutrients. A team of researchers has now been able to detect microbial life in two newly discovered mud volcanoes with very high pH values.
Researchers to investigate moisture-driven Antarctic ice sheet growth during past warm climates
Investigating how increased moisture transport to Antarctica, and under what temperatures and sea ice conditions moisture transport occurs, is required to understand the mechanisms that can lead to increased ice accumulation.
Nutritional supplements boost baby coral survival
Feeding coral larvae a coral ’baby food’ can dramatically increase their chances of survival, offering a new avenue for reef restoration as climate change continues to threaten coral ecosystems, a new study finds.
Functional extinction of Florida’s reef-building corals following the 2023 marine heatwave
The record-breaking 2023 marine heatwave has killed nearly all of Florida’s critically endangered Acropora coral colonies, marking the species’ functional extinction in Florida’s Coral Reef (FCR), researchers report.
Tiny ocean organisms missing from climate models may hold the key to Earth’s carbon future
The ocean’s smallest engineers, calcifying plankton, quietly regulate the Earth’s thermostat by capturing and cycling carbon. However, a new review finds that these organisms are oversimplified in the climate models used to predict our planet’s future.
Underwater thermal vents may have given rise to the first molecular precursors of life
A new study shows that, without the presence of enzymes, natural gradients of pH, redox potential, and temperature present in underwater hydrothermal vents could have promoted the reduction of carbon dioxide to formic acid and the subsequent formation of acetic acid.
Marine algae use unique pigment to shield photosynthesis from excess light
Researchers have discovered that marine algae have evolved unique pigments not only to capture the green-blue light available underwater but also to enhance their resilience against excessive sunlight.
Artificial ocean carbon recycling system converts seawater CO2 into valuable chemicals
Researchers have developed an artificial ocean carbon recycling system that captures CO2 from seawater and uses microbes to directly convert it into succinic acid.
Important algal phenomenon discovered in the Arctic – could boost marine life
The shrinking sea ice in the Arctic Ocean is, overall, a disaster. But paradoxically, the melting of the ice can also fuel the engine of the Arctic food chains: algae. A new study indicates there will probably be more of it in the future than previously thought.
Microbes at Red Sea vents show how life and geology shape each other
A new study led by King Abdullah University of Science and Technology (KAUST; Saudi Arabia) Professor Alexandre Rosado has revealed an unusual microbial world in the Hatiba Mons hydrothermal vent fields of the central Red Sea, a site first discovered by one of his co-authors and colleagues, Assistant Professor Froukje ...
Hydrothermal plumes - and microbes - revealed as invisible transport pathways for iron
A new review highlights how hydrothermal vents on the seafloor shape iron availability and influence the global oceanic element cycles.