Current Marine Life News and Events | Page 25

Current Marine Life News and Events, Marine Life News Articles.
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Frigid polar oceans, not balmy coral reefs, are species-formation hot spots
Tropical oceans teem with the dazzle and flash of colorful reef fishes and contain far more species than the cold ocean waters found at high latitudes. This well-known 'latitudinal diversity gradient' is one of the most famous patterns in biology, and scientists have puzzled over its causes for more than 200 years. (2018-07-04)

A new study to improve seabird conservation in Patagonian ecosystems
Preserving a 300,000 square km area in Patagonian waters could improve the conservation of 20 percent of the population of sea birds in their natural habitat, according to a study published in the journal Conservation Biology and led by the expert Francisco Ramírez, researcher from the Faculty of Biology and the Biodiversity Research Institute of the University of Barcelona (IRBio). (2018-07-04)

Study identifies which marine mammals are most at risk from increased Arctic ship traffic
The first comprehensive survey of Arctic marine mammal populations' vulnerability to shipping along two main routes finds which face the most risks from heavier traffic in the region. (2018-07-02)

'The eyes have it' -- Photoreceptors in marine plankton form a depth gauge to aid survival
The eyes of some marine-dwelling creatures have evolved to act like a 'depth gauge', allowing these creatures to swim in the open ocean at a certain depth. (2018-06-27)

New results of Deepwater Horizon research to protect marine life against future oil spills
Researchers from the US, Mexico and Cuba complete comprehensive study, creating baseline data for the Gulf of Mexico's entire marine ecosystem. (2018-06-27)

Marine protected areas often expensive and misplaced
Many marine protected areas are often unnecessarily expensive and located in the wrong places, an international study has shown. The University of Queensland was part of research which found protected areas missed many unique ecosystems, and have a greater impact on fisheries than necessary. A collaboration with the University of Hamburg, Wildlife Conservation Society and The Nature Conservancy assessed the efficiency of marine protected areas, which now cover 16 percent of national waters around the world. (2018-06-27)

Scientists use hydrophone to listen in on methane seeps in ocean
A research team has successfully recorded the sound of methane bubbles from the seafloor off the Oregon coast, opening the door to using acoustics to identify -- and perhaps quantify -- this important greenhouse gas in the ocean. (2018-06-26)

What caused the mass extinction of Earth's first animals?
Fossil records tell us that the first macroscopic animals appeared on Earth about 575 million years ago. Twenty-four million years later, the diversity of animals began to mysteriously decline, leading to Earth's first know mass extinction event. A research team, led by scientists from Arizona State University, is helping to unravel this mystery and understand why this extinction event happened, what it can tell us about our origins, and how the world as we know it came to be. (2018-06-26)

Skeleton formation in young corals documented for first time in multidisciplinary study
Researchers have identified the biological process of mineralization that occurs in a young coral that shifts from the plankton (swimming) stage to the 'settled' stage in which it forms the skeleton from minerals that protect its colony. The discovery is important for understanding the process of coral reef formation and protecting marine creatures from ecological damage associated with global warming, and could impact new biotechnological developments using coral extractions to regenerate and reconstruct human bones. (2018-06-25)

New oceanographic insight pinpoints marine 'hotspots of risk'
Using a novel, high-resolution 'Lagrangian Coherent Structures' mapping technique, scientists are able to model dynamic features in ocean surface currents. The capacity for improved, near real-time mapping of ocean fronts and eddies may now help alert fishermen and fisheries managers to the increased risk so they can try to avoid those protected species and better target the species they are after, the scientists wrote in an article published today in Proceedings of the National Academy of Sciences. (2018-06-25)

Innovative autonomous system for identifying schools of fish
The University of Haifa (Israel) and two teams from the IMDEA Networks Institute have developed an innovative autonomous system, SYMBIOSIS, to monitor real-time schools of fish. This system, which combines optical and acoustic technologies, will be environmentally friendly and will provide reliable information about the condition of marine fish stocks, something that at the moment is practically impossible to achieve without investing enormous resources. (2018-06-20)

Boring barnacles prefer the shallow life on coral reefs
Scientists at Rice University, the University of the Virgin Islands and the National Oceanic and Atmospheric Administration combine efforts to quantify how barnacles infest stony coral over a variety of conditions and reduce calcium carbonate on reefs. Coral reefs harbor diverse marine life and help prevent coastal erosion. (2018-06-20)

Deep-sea marine sponges may hold key to antibiotic drug resistance
FAU's Harbor Branch houses more than 1,000 strains of actinobacteria, one of the most prolific microbial groups for the production of natural products. Derived from sea sponges and other macro-organisms, several strains were identified for their potent antifungal activity, for anti-MRSA activity, and for both antifungal and antibacterial activities. A key finding was the identification of a strain that produced metabolites that are more potent than the bacterial antibiotic, vancomycin, against C. difficile. (2018-06-19)

Rising sea temperatures threaten survival of juvenile albatross
Changes in sea surface temperature affect the survival of albatross during their first year at sea, resulting in a reduced population growth rate when temperatures are warmer than the current average, a new study published in the Journal of Animal Ecology has revealed. (2018-06-18)

Great white sharks dive deep into warm-water whirlpools in the Atlantic
Tracking data from two great white sharks reveals that they spend more time deep inside warm-water eddies, suggesting that's where they like to feed. (2018-06-18)

Scripps graduate student discovers world's first known manta ray nursery
A graduate student at Scripps Institution of Oceanography at the University of California San Diego and colleagues from NOAA's Office of National Marine Sanctuaries have discovered the world's first known manta ray nursery. (2018-06-18)

Climate change has fish moving faster than regulations can keep up
The world's system for allocating fish stocks is being outpaced by the movement of fish species in response to climate change, according to a study undertaken by an international team of marine ecologists, fisheries and social scientists, and lawyers. (2018-06-14)

Who is to blame for marine litter?
Members of the public are more likely to blame the global marine litter crisis on retailers, industry and government, according to new research led by the University of Plymouth. (2018-06-14)

Large-scale whaling in north Scandinavia may date back to 6th century
The intensive whaling that has pushed many species to the brink of extinction today may be several centuries older than previously assumed. This view is held by archaeologists from Uppsala and York whose findings are presented in the European Journal of Archaeology. (2018-06-13)

ISB develops stress test to predict how diatoms will react to ocean acidification
Researchers at the Institute for Systems Biology (ISB) have shown that diatoms can withstand population collapse in an acidified environment by conserving valuable energy normally used for carbon dioxide consumption. (2018-06-13)

Seawater yields first grams of yellowcake
For the first time, researchers have created five grams of yellowcake -- a powdered form of uranium used to produce fuel for nuclear power production -- using acrylic fibers to extract it from seawater. (2018-06-13)

Largest ice sheet on Earth was stable throughout last warm period
The largest ice sheet on Earth was stable throughout the last warm period in geologic time, indicating it should hold up as temperatures continue to rise. (2018-06-13)

Antarctic fungi found to be effective against citrus canker
Brazilian researchers have identified activity against Xanthomonas citri in 29 fungi isolated from samples collected in Antarctica. One of the compounds inhibited reproduction of the bacterium by up to 98 percent. The process of purifying and submitting bioactive compounds to toxicological tests is expected to be concluded no later than 2019. (2018-06-13)

Large-scale study indicates novel, abundant nitrogen-fixing microbes in surface ocean
A large-scale study of the Earth's surface ocean indicates the microbes responsible for fixing nitrogen there -- previously thought to be almost exclusively photosynthetic cyanobacteria-include an abundant and widely distributed suite of non-photosynthetic bacterial populations. (2018-06-11)

Fueling a deep-sea ecosystem
Miles beneath the ocean's surface in the dark abyss, vast communities of subseafloor microbes at deep-sea hot springs are converting chemicals into energy that allows deep-sea life to survive -- and even thrive -- in a world without sunlight. Until now, however, measuring the productivity of subseafloor microbe communities -- or how fast they oxidize chemicals and the amount of carbon they produce -- has been nearly impossible. (2018-06-11)

Volcanic activity, declining ocean oxygen triggered mass extinction of ancient organisms
Researchers from Florida State University have found the first conclusive evidence that millions of years ago, powerful volcanoes pumped Earth's atmosphere full of carbon dioxide, draining the oceans of oxygen and driving a mass extinction of marine organisms (2018-06-11)

Dolphins deliberately killed for use as bait in global fisheries
Ahead of World Oceans Day, new research exposes the practice of killing of aquatic mammals, including some listed as endangered, for the express purpose of securing bait for global fisheries. The practice is widespread globally, but most common in Latin America and Asia. The study reveals there is little information on the impact of this harvesting on targeted mammal populations and urges increased monitoring. (2018-06-07)

Nutritional quality of fish and squid reduced by warm water events
The nutritional quality of fish and squid deteriorates under warm water events, research reveals -- with implications for the marine environment, marine predators and fisheries capturing food for human consumption. (2018-06-07)

Secrets of fish population changes revealed
Populations of fish in the ocean are notoriously variable, waxing and waning in often unpredictable ways. Knowing what drives changes in fish population sizes is important for managing fisheries and conserving species. For the first time, scientists have linked the ecology of adult fish populations inhabiting coral reefs with the dispersal of baby fish between reefs, reporting the dynamics of a living network called a 'marine metapopulation.' (2018-06-07)

Patenting marine genetic resources: Who owns ocean biodiversity?
Marine organisms have evolved to thrive in various ocean environments, resulting in unique adaptations that make them the object of commercial interest. Researchers from the Stockholm Resilience Centre and University of British Columbia have identified 862 marine species, with a total of 12,998 genetic sequences associated with a patent. They found that a single transnational corporation (BASF, the world's largest chemical manufacturer) has registered 47 percent of these sequences. (2018-06-06)

Red tide fossils point to Jurassic sea flood
Dinosaur-age fossilised remains of tiny organisms normally found in the sea have been discovered in inland, arid Australia -- suggesting the area was, for a short time at least, inundated by sea water 40 million years before Australia's large inland sea existed. (2018-06-05)

UCI scientists analyze first direct images of dissolved organic carbon from the ocean
In a first, researchers from the University of California, Irvine - as well as Switzerland's University of Zurich, IBM Research-Zurich and UC Santa Cruz - have obtained direct images of dissolved organic carbon molecules from the ocean, allowing better analysis and characterization of compounds that play an important role in the Earth's changing climate. (2018-06-05)

Study in Fiji finds that removing sea cucumbers spells trouble for shallow coastal waters
The sea cucumber's unimpressive appearance belies the outsized role these creatures play in converting decomposing organic matter into recyclable nutrients and keeping coastal ecosystems healthy and clean, and overfishing them can have negative impacts on coastal marine environments, according to a new study focusing on a species of sea cucumber called a sandfish in the journal PeerJ. (2018-06-05)

Did extreme fluctuations in oxygen, not a gradual rise, spark the Cambrian explosion?
Five hundred and forty million years ago, during the Cambrian period, life suddenly went nuts. 'Blossomed' is far too mild a word: instead, geologists call this sudden diversification an 'explosion.' But what exactly sparked the Cambrian explosion? (2018-06-04)

Nanoplastics accumulate in marine organisms and may pose harm to aquatic food chains
A research team from the National University of Singapore discovered that nanoplastics can accumulate in marine organisms over time. This could pose harm to aquatic food chains and human health (2018-05-31)

Ancient tooth shows Mesolithic ancestors were fish and plant eaters
Analysis of the skeletal remains of a Mesolithic man found in a cave on a Croatian island has revealed microscopic fish and plant remains in the dental plaque of a tooth -- a first-time discovery for the period and region. (2018-05-31)

Scientists rethink co-evolution of marine life, oxygenated oceans
Researchers in the Department of Earth Sciences at Syracuse University have confirmed that rising oceanic and atmospheric oxygen levels co-evolved with marine life hundreds of millions of years ago. (2018-05-31)

Researchers devise new way to discern what microbes eat
A new technique helps researchers determine food eaten by microbes. (2018-05-30)

New tool improves fishing efficiency and sustainability
New software targets most abundant fishing grounds and reduces catch of unwanted or protected species using satellite data, maps and observations. (2018-05-30)

New study investigates dolphin liberation in Korea
A international team of researchers, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has carried out a scientific investigation on dolphin liberation in South Korea. (2018-05-27)

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