Popular Loggerhead Sea Turtle News and Current Events

Popular Loggerhead Sea Turtle News and Current Events, Loggerhead Sea Turtle News Articles.
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Alligators on the beach? Killer whales in rivers? Get used to it
Sightings of alligators and other large predators in places where conventional wisdom says they 'shouldn't be' have increased in recent years, in large part because local populations, once hunted to near-extinction, are rebounding. A new Duke-led paper finds that far from being outliers, these sightings signify the return of highly adaptable predators to prime hunting grounds they occupied long ago -- a trend that opens new opportunities for future conservation. (2018-05-07)

Fragmented turtles
Scientists looked at how fragmentation is affecting critically endangered Dahl's toad headed turtle (Mesoclemmys dahli) a forest-stream specialist found only in Colombia. (2019-05-09)

From sea to lab
With its vast numbers of different lifeforms, the sea is a largely unexplored source of natural products that could be starting points for new pharmaceuticals, such as the antitumor drugs trabectedin and lurbinectedin. Because only tiny amounts can be obtained from sea organisms, synthetic production is necessary. In the journal Angewandte Chemie, scientists have introduced a new, efficient synthetic route for these two drugs. A key step is the light-controlled activation of a carbon-hydrogen bond. (2019-02-18)

Sloppy sea urchins
Marine scientists discover an important, overlooked role sea urchins play in the kelp forest ecosystem. (2019-07-10)

Glaciers accelerate in the Getz region of West Antarctica
Glaciers in West Antarctica are moving more quickly from land into the ocean, contributing to rising global sea levels. A 25-year record of satellite observations has been used to show widespread increases in ice speed across the Getz sector for the first time, with some ice accelerating into the ocean by nearly 50%. (2021-02-23)

Protective ship coatings as an underestimated source of microplastic pollution
Shipping traffic can be a major source of microplastics, especially out in the open ocean. In a new study, a team of environmental geochemists from the University of Oldenburg (Germany) for the first time provides an overview of microplastics mass distribution in the North Sea. The scientists found that most of the plastic particles in water samples taken in the south-eastern North Sea originate from binders used in marine paints. Their hypothesis is that ships leave a kind of 'skid mark' in the water. (2021-02-23)

'Problem of missing ice' finally solved by movement of the earth's crust
An international team of scientists published a study in Nature Communications today. This new reconstruction revolutionizes what is thought about the global continental ice mass during the Last Ice Age. (2021-02-23)

'Missing ice problem' finally solved
During glacial periods, the sea level falls, because vast quantities of water are stored in the massive inland glaciers. To date, however, computer models have been unable to reconcile sea-level height with the thickness of the glaciers. (2021-02-23)

Researchers study how to improve southern sea otter survival
Analysis of 13 years of demographic and genetic data from 1,006 sea otters to assess multiple effective population size estimators, as well as temporal trends in genetic diversity and population genetic structure, show a need for development of new delisting criteria for the southern sea otter. (2018-05-01)

Arctic sea ice thinning at record rate
The thickness of sea ice in large parts of the Arctic declined by as much as 19 percent last winter compared to the previous five winters, according to data from ESA's Envisat satellite. (2008-10-28)

Deep-sea fish reveals twilight trick
A new type of cell has been found in the eye of a deep-sea fish, and scientists say the discovery opens a new world of understanding about vision in a variety of light conditions. University of Queensland scientists found the new cell type in the deep-sea pearlside fish (Maurolicus spp.), which have an unusual visual system adapted for twilight conditions. (2017-11-08)

NASA catches Tropical Storm Tapah by the tail
Tropical Storm Tapah has a huge 'tail' on NASA satellite imagery. NASA's Terra satellite captured an image of the northwestern Pacific Ocean storm that revealed a large band of thunderstorms that resemble a large tail. The NASA imagery also indicated that the storm is getting better organized. (2019-09-20)

Corals in Singapore likely to survive sea-level rise: NUS study
Marine scientists from the National University of Singapore found that coral species in Singapore's sedimented and turbid waters are unlikely to be impacted by accelerating sea-level rise (2019-07-01)

Mechanisms explaining positional diversity of the hindlimb in tetrapod evolution
Elucidating how body parts in their earliest recognizable form are assembled in tetrapods during development is essential for understanding the nature of morphological evolution. Nagoya University researchers found in eight tetrapod species that the position of the sacral vertebrae and the hindlimbs is determined by the initiation timing of Gdf11 gene expression. This will contribute to a forthcoming model explaining the coupling of spine and hindlimb positioning - a major step in fully understanding tetrapod evolution. (2017-08-18)

Reconstruction of major North Atlantic circulation system shows weakening
Rising levels of carbon dioxide in the atmosphere have affected one of the global ocean's major circulation systems, the Atlantic Meridional Overturning Circulation (AMOC), slowing the redistribution of heat in the North Atlantic Ocean. The resulting changes have been felt along the Northeast US Shelf and in the Gulf of Maine, which has warmed 99 percent faster than the global ocean over the past ten years, impacting distributions of fish and other species and their prey. (2018-04-11)

Mysterious climate change
New research findings underline the crucial role that sea ice throughout the Southern Ocean played for atmospheric CO2 in times of rapid climate change in the past. An international team with the participation of the University of Bonn has shown that the seasonal growth and destruction of sea ice in a warming world increases the biological productivity of the seas around Antarctica by extracting carbon from the atmosphere and storing it in the deep ocean. (2020-06-22)

Sea worms and jellyfish treat cancer and kill insects
Scientists of the Pacific Institute of Bioorganic Chemistry (PIBOC) of the Far Eastern Branch of the Russian Academy of Sciences (FEB RAS) and the Far Eastern Federal University (FEFU) found out marine invertebrates living in Troitsa Bay, the Sea of Japan, contain biologically active compounds with strong antitumor and antimicrobial properties, and also capable of killing insects. An article on that was published in the Russian Journal of Marine Biology. (2019-02-14)

Thought Antarctica's biodiversity was doing well? Think again
Antarctica and the Southern Ocean are not in better environmental shape than the rest of the world. (2017-04-25)

GPM satellite finds heavy rainfall on northern side of typhoon Lingling
The Global Precipitation Measurement mission or GPM core satellite analyzed the rainfall rates happening within Typhoon Lingling and found the heaviest precipitation on its northern side. (2019-09-06)

Increasing loss of spring sea ice taxes polar bear metabolism
Tracking polar bears during the spring -- their prime hunting season, when sea ice conditions should be ideal -- reveals that in recent years, many bears are expending notably more energy than they are consuming. (2018-02-01)

Sea floor uplift after last ice age causes methane release in the Arctic today
Present-day release of methane from an area of the Arctic Ocean is an effect of the uplift of the sea floor, rather than anthropogenic ocean warming, a new study in Nature Communications states. (2018-02-06)

Slow, steady waves keep brain humming
Very slow brain waves, long considered an artifact of brain scanning techniques, may be more important than anyone had realized. Researchers at Washington University School of Medicine in St. Louis have found that very slow waves are directly linked to state of consciousness and may be involved in coordinating activity across distant brain regions. (2018-03-29)

Harbor porpoises on the decline in the German North Sea
The harbor porpoise population is declining in the German North Sea, according to a recent study which surveyed the species over a 20-year time period. Harbor porpoises are known as a ''sentinel species'' - animals which indicate the health of an ecosystem and point to potential risks (think of the canary in the coal mine) - and their decreasing numbers indicate the extent to which human activities have affected marine wildlife. (2021-01-07)

Unraveling a major cause of sea ice retreat in the Arctic Ocean
Quantitative analysis has evidenced the acceleration system of melting ice: dark water surfaces absorb more heat than white ice surfaces, thus melting ice and making more water surfaces in the Arctic Ocean. (2017-09-06)

Tidewater glaciers: Melting underwater far faster than previously estimated?
A tidewater glacier in Alaska is melting underwater at rates upwards of two orders of magnitude greater than what is currently estimated, sonar surveys reveal. (2019-07-25)

Ocean floor geysers warm flowing sea water
An international team of earth scientists report movement of warmed sea water through the flat, Pacific Ocean floor off Costa Rica. The movement is greater than that off midocean volcanic ridges. The finding suggests possible marine life in a part of the ocean once considered barren. (2008-09-22)

Neurological signals from the spinal cord surprise scientists
With a study of the network between nerve and muscle cells in turtles, researchers from the University of Copenhagen have gained new insight into the way in which movements are generated and maintained. In the long term, the new knowledge may have an impact on the treatment of, for example, ALS and spinal cord injuries. (2019-09-19)

Arctic wintertime sea ice extent is among lowest on record
Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the four lowest maximum extents on record, according to scientists at the NASA-supported National Snow and Ice Data Center (NSIDC) and NASA. (2018-03-23)

The sea anemone, an animal that hides its complexity well
Despite its apparent simplicity -- a tube-like body topped with tentacles -- the sea anemone is actually a highly complex creature. Scientists from the Institut Pasteur, in collaboration with the CNRS, have just discovered over a hundred different cell types in this small marine invertebrate as well as incredible neuronal diversity. This surprising complexity was revealed when the researchers built a real cell atlas of the animal. (2018-07-09)

Arctic Ocean methane does not reach the atmosphere
250 methane flares release the climate gas methane from the seabed and into the Arctic Ocean. During the summer months this leads to an increased methane concentration in the ocean. But surprisingly, very little of the climate gas rising up through the sea reaches the atmosphere. (2016-05-27)

Viruses -- lots of them -- are falling from the sky
An astonishing number of viruses are circulating around the Earth's atmosphere -- and falling from it -- according to new research from scientists in Canada, Spain and the US. The study marks the first time scientists have quantified the viruses being swept up from the Earth's surface into the free troposphere, beyond Earth's weather systems but below the stratosphere where jet airplanes fly. The viruses can be carried thousands of kilometres there before being deposited back onto the Earth's surface. (2018-02-06)

Deep impact: Deep-sea wildlife more vulnerable to extinction than first thought
The existence of the unusual yeti crabs (Kiwaidae) -- a family of crab-like animals whose hairy claws and bodies are reminiscent of the abominable snowman -- since 2005, but already their future survival could be at risk. New Oxford University research suggests that past environmental changes may have profoundly impacted the geographic range and species diversity of this family. The findings indicate that such animals may be more vulnerable to the effects of human resource exploitation and climate change than initially thought. (2018-03-22)

Jurassic crocodile discovery sheds light on reptiles' family tree
A 150 million-year-old fossil has been identified as a previously unseen species of ancient crocodile that developed a tail fin and paddle-like limbs for life in the sea. (2019-04-04)

Device may save seabirds from the dangers of fishing gear
A new Animal Conservation article summarizing 4 years of study found that a device called the Hookpod can help prevent birds from being inadvertently caught by fishermen. (2017-12-20)

Century of data shows sea-level rise shifting tides in Delaware, Chesapeake bays
The warming climate is expected to affect coastal regions worldwide as glaciers and ice sheets melt, raising sea level globally. For the first time, an international team has found evidence of how sea-level rise already is affecting high and low tides in both the Chesapeake and Delaware bays, two large estuaries of the eastern United States. (2018-01-24)

Memory transferred between snails
Memories can be transferred between organisms by extracting ribonucleic acid (RNA) from a trained animal and injecting it into an untrained animal, as demonstrated in a study of sea snails published in eNeuro. The research provides new clues in the search for the physical basis of memory. (2018-05-14)

UK chalk-stream salmon genetically unique
Salmon from the chalk streams of southern England are genetically unique, researchers have discovered. (2018-01-30)

New SDSU study examines role of sea urchins on California kelp
California sheephead and spiny lobsters may be helping control sea urchin populations in Southern California kelp forests, where sea otters -- a top urchin predator -- have long been missing, according to a new San Diego State University (SDSU) study published in the journal Ecology. The research provides new insight into the complex predator-prey relationships in kelp forests that can be seen in the absence of sea otters. (2019-03-14)

How synaptic changes translate to behavior changes
Learning changes behavior by altering many connections between brain cells in a variety of ways all at the same time, according to a study of sea slugs recently published in JNeurosci. The findings offer insight into how human learning can impact widespread brain areas. (2020-05-04)

Rising temperatures turning major sea turtle population female
Scientists have used a new research approach to show that warming temperatures are turning one of the world's largest sea turtle colonies almost entirely female, running the risk that the colony cannot sustain itself in coming decades, newly published research concludes. (2018-01-11)

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