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Categories: Ecology: Extinction, Space: Structures and Features

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Biology: Biochemistry Biology: Botany Biology: General Ecology: Extinction Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Ecology: Trees Environmental: Biodiversity Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Geography
Published

Scientists name the most common tropical tree species      (via sciencedaily.com)     Original source 

Researchers have found almost identical patterns of tree diversity across the world's tropical forests. The study of over one million trees across 1,568 locations found that just 2.2% of tree species make up 50% of the total number of trees in tropical forests across Africa, the Amazon, and Southeast Asia. Each continent consists of the same proportion of a few common species and many rare species.

Biology: Marine Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems
Published

In hot water: Coral resilience in the face of climate change      (via sciencedaily.com)     Original source 

Researchers have been studying the effects of climate change on coral reefs. Monitoring two coral species off the coast of Hawaii, one team found that local adaptations in response to near-severe heat stress allowed certain populations to endure such events.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

NASA's Webb finds signs of possible aurorae on isolated brown dwarf      (via sciencedaily.com)     Original source 

Astronomers have found a brown dwarf (an object more massive than Jupiter but smaller than a star) with infrared emission from methane, likely due to energy in its upper atmosphere. This is an unexpected discovery because the brown dwarf, W1935, is cold and lacks a host star; therefore, there is no obvious source for the upper atmosphere energy. The team speculates that the methane emission may be due to processes generating aurorae.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: Structures and Features
Published

Unlocking the secrets of a 'Hot Saturn' and its spotted star      (via sciencedaily.com)     Original source 

A team of astronomers has unraveled the enigmatic atmosphere of the exoplanet HAT-P-18 b, shedding light on its intriguing blend of gases, clouds, and even the effects of its star's activity.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
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'Blob-like' home of farthest-known fast radio burst is collection of seven galaxies      (via sciencedaily.com)     Original source 

In summer 2022, astronomers detected the most powerful and most distant fast radio burst (FRB) ever observed. Now, astronomers have pinpointed the extraordinary object's birthplace -- and it's rather curious, indeed. Using images from NASA's Hubble Space Telescope, the researchers traced the FRB back to not one galaxy but a group of at least seven galaxies.

Archaeology: General Biology: Biochemistry Biology: Zoology Ecology: Animals Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Nature Environmental: Biodiversity Environmental: Ecosystems Environmental: General
Published

Nine new snail species discovered in Papua New Guinea, a biodiversity hot spot at risk      (via sciencedaily.com)     Original source 

A new study describes nine new species of carnivorous land snails, all of which are so small they could fit together on a U.S. nickel. They present a rare opportunity to study a group that in many other places is disappearing fast. Worldwide, mollusks account for more than 50% of all recorded extinctions since the year 1500, and many of these were land snails from Pacific islands.

Biology: General Biology: Zoology Ecology: Extinction Ecology: Nature
Published

Spanish butterflies better at regulating their body temperature than their British cousins      (via sciencedaily.com)     Original source 

Butterfly populations in Catalonia in northern Spain are better than their UK counterparts at regulating their body temperature by basking in the sunshine, but rising global temperatures due to climate change may put Spanish butterflies at greater risk of extinction.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Final supernova results from Dark Energy Survey offer unique insights into the expansion of the universe      (via sciencedaily.com)     Original source 

In the culmination of a decade's worth of effort, scientists analyzed an unprecedented sample of more than 1,500 supernovae classified using machine learning. They placed the strongest constraints on the expansion of the universe ever obtained with the DES supernova survey. While consistent with the current standard cosmological model, the results do not rule out a more complex theory that the density of dark energy in the universe could have varied over time.

Biology: Biochemistry Biology: Evolutionary Biology: General Ecology: Animals Ecology: Extinction Ecology: Nature Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals
Published

How did the bushpig cross the strait? A great puzzle in African mammal biogeography solved by genomics      (via sciencedaily.com)     Original source 

Africa has a huge diversity of large mammals, but their evolutionary relationships and movement across the continent over time often remain a mystery. A new scientific study sheds light on longstanding questions about the interplay between evolution and geography in one of these mammals, namely the iconic African bushpig, and helps settle a major question regarding prehistoric human activities shaping biodiversity patterns in Africa.

Biology: Biochemistry Biology: General Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Nature Environmental: General
Published

Widespread population collapse of African Raptors      (via sciencedaily.com)     Original source 

An international team of researchers has found that Africa's birds of prey are facing an extinction crisis. The report warns of declines among nearly 90% of 42 species examined, and suggests that more than two-thirds may qualify as globally threatened.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

Three iron rings in a planet-forming disk      (via sciencedaily.com)     Original source 

Astronomers have detected a three-ringed structure in the nursery of planets in the inner planet-forming disk of a young star. This configuration suggests two Jupiter-mass planets are forming in the gaps between the rings. The detailed analysis is consistent with abundant solid iron grains complementing the dust composition. As a result, the disk likely harbors metals and minerals akin to those in the Solar System's terrestrial planets. It offers a glimpse into conditions resembling the early Solar System over four billion years ago during the formation of rocky planets such as Mercury, Venus, and Earth.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features
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Space oddity: Uncovering the origin of the universe's rare radio circles      (via sciencedaily.com)     Original source 

Astronomers believe they may have found the origin of the universe's giant odd radio circles: they are shells formed by outflowing galactic winds, possibly from massive exploding stars known as supernovae.

Biology: Biochemistry Biology: General Biology: Zoology Ecology: Animals Ecology: Extinction Ecology: Nature Environmental: General Environmental: Water
Published

Feathers from deceased birds help scientists understand new threat to avian populations      (via sciencedaily.com)     Original source 

Animal ecologists developed an analytical approach to better understand one of the latest threats to feathered creatures: the rise of wind and solar energy facilities.

Space: Astrophysics Space: Cosmology Space: General Space: Structures and Features
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Magnetic fields in the cosmos: Dark matter could help us discover their origin      (via sciencedaily.com)     Original source 

We don't know how magnetic fields in the cosmos formed. Now a new theoretical research tells how the invisible part of our universe could help us find out, suggesting a primordial genesis, even within a second of the Big Bang.

Space: Astronomy Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

A carbon-lite atmosphere could be a sign of water and life on other terrestrial planets      (via sciencedaily.com)     Original source 

Best chance of finding liquid water, and even life on other planets, is to look for the absence of carbon dioxide in their atmospheres.

Space: Astronomy Space: Astrophysics Space: General Space: Structures and Features
Published

Further evidence for quark-matter cores in massive neutron stars      (via sciencedaily.com)     Original source 

New theoretical analysis places the likelihood of massive neutron stars hiding cores of deconfined quark matter between 80 and 90 percent. The result was reached through massive supercomputer runs utilizing Bayesian statistical inference.

Offbeat: General Offbeat: Space Space: Astrophysics Space: General Space: Structures and Features
Published

Hubble sights a galaxy with 'forbidden' light      (via sciencedaily.com)     Original source 

A whirling image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth. In addition to being a well-defined spiral galaxy, MCG-01-24-014 has an extremely energetic core known as an active galactic nucleus (AGN) and is categorized as a Type-2 Seyfert galaxy. Seyfert galaxies, along with quasars, host one of the most common subclasses of AGN. While the precise categorization of AGNs is nuanced, Seyfert galaxies tend to be relatively nearby and their central AGN does not outshine its host, while quasars are very distant AGNs with incredible luminosities that outshine their host galaxies.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: General Space: Structures and Features
Published

Researchers study a million galaxies to find out how the universe began      (via sciencedaily.com)     Original source 

Researchers have analyzed more than one million galaxies to explore primordial fluctuations that seeded the formation of the structure of the entire universe.