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Categories: Geoscience: Geography, Mathematics: Puzzles
Published Chemistry in the ground affects how many offspring wild animals have
(via sciencedaily.com) Original source Chemistry in the ground affect how many kids wild animals have Areas with more copper and selenium in the ground lead to higher reproductive success in wild musk oxen in Greenland.
Published Researchers are first to see at-risk bat flying over open ocean
(via sciencedaily.com) Original source On a research cruise focused on marine mammals and seabirds, scientists earned an unexpected bonus: The first-ever documented sighting of a hoary bat flying over the open ocean.
Published Scientists propose new method for tracking elusive origins of CO2 emissions from streams
(via sciencedaily.com) Original source A team of researchers that specializes in accounting for the carbon dioxide release by streams, rivers and lakes recently demonstrated that the chemical process known as 'carbonate buffering' can account for the majority of emissions in highly alkaline waters. Furthermore, carbonate buffering distorts the most commonly used method of tracking the origins of CO2 in streams. The research proposes a better method for tracking the origin of riverine CO2 emissions.
Published Significant glacial retreat in West Antarctica began in 1940s
(via sciencedaily.com) Original source Among the vast expanse of Antarctica lies the Thwaites Glacier, the world's widest glacier measuring about 80 miles on the western edge of the continent. Despite its size, the massive landform is losing about 50 billion tons of ice more than it is receiving in snowfall, which places it in a precarious position in respect to its stability. Accelerating ice loss has been observed since the 1970s, but it is unclear when this significant melting initiated -- until now. A new study suggests that the significant glacial retreat of two glaciers on the west coast of Antarctica began in the 1940's, likely spurred by climate change.
Published Scientists assemble a richer picture of the plight and resilience of the foothill yellow-legged frog
(via sciencedaily.com) Original source Up to only a few inches in length, with a lemon-hued belly, the foothill yellow-legged frog may seem unassuming. But its range once stretched from central Oregon to Baja California. In 2023, it was listed under the federal Endangered Species Act. Its rapidly decreasing range is due in part to a fungal pathogen called Batrachochytrium dendrobatidis, or Bd, that has devastated amphibians around the world.
Published Birds and bee lessons as Pacific field trips also solve 'Michener's mystery'
(via sciencedaily.com) Original source Eight new Pacific bee species and new insights into Fijian bird behaviour on Viti Levu Island have been described in new scientific studies. The research highlights the potential for species discovery, ecological and conservation knowledge and cultural engagement from Asia-Pacific research collaborations.
Published Barriers against Antarctic ice melt disappearing at the double
(via sciencedaily.com) Original source Undersea anchors of ice that help prevent Antarctica's land ice from slipping into the ocean are shrinking at more than twice the rate compared with 50 years ago, research shows. More than a third of these frozen moorings, known as pinning points, have decreased in size since the turn of the century, experts say. Further deterioration of pinning points, which hold in place the floating ice sheets that fortify Antarctica's land ice, would accelerate the continent's contribution to rising sea levels, scientists warn.
Published Climate change could push bowhead whales to cross paths with shipping traffic
(via sciencedaily.com) Original source The population of bowhead whales that migrates between the Bering and Beaufort Seas each year is a conservation success story, with today's population nearing -- if not exceeding -- pre-commercial whaling numbers. But climate change is shifting the whales' feeding grounds and migration patterns, potentially pushing them to spend more time in the paths of oncoming ships, according to a new study.
Published Utah's Bonneville Salt Flats has long been in flux
(via sciencedaily.com) Original source It has been long assumed that Utah's Bonneville Salt Flats was formed as its ancient namesake lake dried up 13,000 years ago. But new research has gutted that narrative, determining these crusts did not form until several thousand years after Lake Bonneville disappeared, which could have important implications for managing this feature that has been shrinking for decades to the dismay of the racing community and others who revere the saline pan 100 miles west of Salt Lake City. Relying on radiocarbon analysis of pollen found in salt cores, the study concludes the salt began accumulating between 5,400 and 3,500 years ago, demonstrating how this geological feature is not a permanent fixture on the landscape.
Published Does Russia stand to benefit from climate change?
(via sciencedaily.com) Original source There exists a narrative about climate change that says there are winners and losers -- with Russia being one of the countries that stand to benefit from its effects. In a new study, researchers found that Russia is suffering from a variety of climate change impacts and is ill-prepared to mitigate or adapt to those climate impacts. And, as the rest of the world transitions to renewable energy sources, Russia's fossil-fuel-dependent government is not willing or ready to make alternative plans for the country, changes that could potentially benefit the whole of their society.
Published New detection method aims to warn of landslide tsunamis
(via sciencedaily.com) Original source Researchers have devised a way to remotely detect large landslides within minutes of occurrence and to quickly determine whether they are close to open water and present a tsunami hazard.
Published Weedy rice gets competitive boost from its wild neighbors
(via sciencedaily.com) Original source Weedy rice is an agricultural pest with a global economic impact. It is an aggressive weed that outcompetes cultivated rice and causes billions of dollars in yield losses worldwide. A study offers new insights into genetic changes that give weedy rice its edge over cultivated rice in tropical regions of the world.
Published Highways through historically redlined areas likely cause air pollution disparities today
(via sciencedaily.com) Original source As part of the New Deal, several governmental programs were created to expand homeownership through mortgages and loans. However, neighborhoods with primarily Black or immigrant communities often were rated 'hazardous' for repayment under the discriminatory, 'redlining' practice that restricted lending. Today, those same areas are exposed to more air pollution than other urban neighborhoods, and the cause could relate to nearby highways or industrial parks.
Published Mercury levels in tuna remain nearly unchanged since 1971
(via sciencedaily.com) Original source Tuna is one of the most popular seafoods worldwide. But this protein-rich fish can build up high levels of methylmercury from feeding on contaminated prey, like smaller fish or crustaceans. Despite efforts to reduce mercury emissions into the environment, researchers report that levels in tuna appear to be unchanged since 1971. They warn that more aggressive emission reduction targets are needed to start nudging down tuna mercury levels.
Published 'The future is fungal': New research finds that fungi that live in healthy plants are sensitive to climate change
(via sciencedaily.com) Original source Findings more than a decade in the making reveal a rich diversity of beneficial fungi living in boreal forest trees, with implications for the health of forests.
Published Low oxygen in lakes may breathe new life into conservation efforts for water quality
(via sciencedaily.com) Original source An international team analyzed 656 lakes across five continents to provide empirical evidence supporting a long-held theory regarding low deep-water oxygen concentrations, or anoxia.
Published Gulf corals still suffering more than a decade after Deepwater Horizon oil spill, scientists report
(via sciencedaily.com) Original source Deep-water corals in the Gulf of Mexico are still struggling to recover from the devastating Deepwater Horizon oil spill in 2010, scientists report at the Ocean Science Meeting in New Orleans. Comparing images of more than 300 corals over 13 years -- the longest time series of deep-sea corals to date -- reveals that in some areas, coral health continues to decline to this day.
Published Giant new snake species identified in the Amazon
(via sciencedaily.com) Original source A team of scientists on location with a film crew in the remote Amazon has uncovered a previously undocumented species of giant anaconda.
Published The cultural evolution of collective property rights
(via sciencedaily.com) Original source Common pool resources comprise around 65 percent of Earth's surface and vast tracts of the ocean. While examples of successful governance of these resources exist, the circumstances and mechanisms behind their development have remained unclear. Researchers have developed a simulation model to examine the emergence, stability and temporal dynamics of collective property rights.
Published Panama Canal expansion rewrites history of world's most ecologically diverse bats
(via sciencedaily.com) Original source In a new study, paleontologists describe the oldest-known leaf-nosed bat fossils, which were found along the banks of the Panama Canal. They're also the oldest bat fossils from Central America, preserved 20-million years ago when Panama and the rest of North America were separated from southern landmass by a seaway at least 120 miles wide.