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Categories: Ecology: Research, Space: Exploration

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Biology: General Biology: Zoology Ecology: Animals Ecology: Endangered Species Ecology: Extinction Ecology: Nature Ecology: Research
Published

Study uncovers major hidden human-driven bird extinctions      (via sciencedaily.com)     Original source 

Humans have wiped out around 1,400 bird species -- twice as many as previously thought -- with major implications for the ongoing biodiversity crisis, a new study has found. The estimated extinctions would mean almost 12 per cent of bird species have died out over modern human history, since the Late Pleistocene around 130,000 years ago, with the vast majority of them becoming extinct directly or indirectly due to human activity.

Biology: Biochemistry Biology: General Biology: Marine Biology: Zoology Ecology: General Ecology: Nature Ecology: Research Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography
Published

15 most pressing issues for conservation, including invertebrate decline and changing marine ecosystems      (via sciencedaily.com)     Original source 

Since 2009, the Cambridge Conservation Initiative has coordinated an annual horizon scan, a well-established method for predicting which threats, changes, and technologies will have the biggest impact on biological conservation in the following year. This year, the 15th horizon scan included 31 scientists, practitioners, and policymakers who developed a list of 96 issues, which they eventually narrowed down to the fifteen most novel and impactful. Their findings include topics related to sustainable energy, declining invertebrate populations, and changing marine ecosystems.

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

Scientists measure the distance to stars by their music      (via sciencedaily.com)     Original source 

A team of astronomers has used asteroseismology, or the study of stellar oscillations, to accurately measure the distance of stars from the Earth. Their research examined thousands of stars and checked the measurements taken during the Gaia mission to study the near Universe.

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

New red galaxies turn out to be already known blue galaxies      (via sciencedaily.com)     Original source 

Not all discoveries turn out to be actual new discoveries. This was the case for the extremely red objects (EROs) found in James Webb Space Telescope (JWST) data. Analysis shows that they are very similar to blue-excess dust obscured galaxies (BluDOGs) already reported in Subaru Telescope data.

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

Astronomers discover first population of binary stripped stars      (via sciencedaily.com)     Original source 

Astronomers have discovered a population of massive stars that have been stripped of their hydrogen envelopes by their companions in binary systems. The findings shed light on the hot helium stars that are believed to be the origins of hydrogen-poor core-collapse supernovae and neutron star mergers.

Biology: Zoology Ecology: General Ecology: Nature Ecology: Research Environmental: Biodiversity Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues
Published

Move over Blitzen: Geese outpace reindeer impacts on Arctic ecosystems      (via sciencedaily.com)     Original source 

A research team is studying how expanding populations of two local herbivores -- reindeer and geese -- on Svalbard will impact the future of the ecosystem on the islands. 

Anthropology: Early Humans Anthropology: General Archaeology: General Biology: Evolutionary Biology: General Ecology: Research Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

AI provides more accurate analysis of prehistoric and modern animals, painting picture of ancient world      (via sciencedaily.com)     Original source 

A new study of the remains of prehistoric and modern African antelopes found that AI technology accurately identified animals more than 90% of the time compared to humans, who had much lower accuracy rates depending on the expert.

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

Unexpected chemistry reveals cosmic star factories' secrets      (via sciencedaily.com)     Original source 

Two galaxies in the early universe, which contain extremely productive star factories, have been studied by a team of scientists. Using powerful telescopes to split the galaxies' light into individual colors, the scientists were amazed to discover light from many different molecules -- more than ever before at such distances. Studies like this could revolutionize our understanding of the lives of the most active galaxies when the universe was young, the researchers believe.

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

Tiniest free-floating brown dwarf      (via sciencedaily.com)     Original source 

Brown dwarfs are objects that straddle the dividing line between stars and planets. They form like stars, growing dense enough to collapse under their own gravity, but they never become dense and hot enough to begin fusing hydrogen and turn into a star. At the low end of the scale, some brown dwarfs are comparable with giant planets, weighing just a few times the mass of Jupiter.

Biology: Biochemistry Biology: General Ecology: General Ecology: Nature Ecology: Research Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Environmental: Wildfires Geoscience: Environmental Issues Geoscience: Geochemistry
Published

Wildfires also impact aquatic ecosystems      (via sciencedaily.com)     Original source 

Researchers have shown that the effects of wildfires are not limited to terrestrial ecosystems. Aquatic ecosystems are also undergoing rapid changes. The study found that fire debris transforms lakes and other aquatic ecosystems, with implications for fisheries and water quality.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: Structures and Features Space: The Solar System
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Some icy exoplanets may have habitable oceans and geysers      (via sciencedaily.com)     Original source 

A new study expands the search for life beyond our solar system by indicating that 17 exoplanets (worlds outside our solar system) could have oceans of liquid water, an essential ingredient for life, beneath icy shells. Water from these oceans could occasionally erupt through the ice crust as geysers. The science team calculated the amount of geyser activity on these exoplanets, the first time these estimates have been made. They identified two exoplanets sufficiently close where signs of these eruptions could be observed with telescopes.

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

NASA's Webb stuns with new high-definition look at exploded star      (via sciencedaily.com)     Original source 

Like a shiny, round ornament ready to be placed in the perfect spot on a holiday tree, supernova remnant Cassiopeia A (Cas A) gleams in a new image.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: The Solar System
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14-inch spacecraft delivers new details about 'hot Jupiters'      (via sciencedaily.com)     Original source 

The Colorado Ultraviolet Transit Experiment (CUTE) spacecraft is about the size of a cereal box. It has also recorded incredibly detailed measurements of the atmospheres of planets hundreds of light-years from Earth.

Ecology: General Ecology: Research Environmental: Ecosystems Environmental: Water Offbeat: Earth and Climate Offbeat: General Offbeat: Plants and Animals
Published

Have researchers found the missing link that explains the mysterious phenomenon known as fairy circles?      (via sciencedaily.com)     Original source 

Fairy circles, a nearly hexagonal pattern of bare-soil circular gaps in grasslands, initially observed in Namibia and later in other parts of the world, have fascinated and baffled scientists for years. New research suggests that all theories to date have overlooked the coupling between two robust mechanisms essential for understanding ecosystem response: phenotypic plasticity at the level of a single plant, and spatial self-organization in vegetation patterns at the level of a plant population.

Environmental: General Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geomagnetic Storms Offbeat: Earth and Climate Offbeat: General Offbeat: Space Space: Exploration Space: General Space: The Solar System
Published

When is an aurora not an aurora?      (via sciencedaily.com)     Original source 

While auroras occur at high latitude, the associated phenomena Steve and the picket fence occur farther south and at lower altitude. Their emissions also differ from aurora. A physics graduate student has proposed a physical mechanism behind these emissions, and a rocket launch to test the theory. She argues that an electric field in the upper atmosphere parallel to Earth's magnetic field could explain the green picket fence spectrum and perhaps Steve and the enhanced aurora.