Showing 20 articles starting at article 621
Categories: Ecology: Invasive Species, Geoscience: Geology
Published Mapping the middle ground: Balancing mining activities with survival of Utah's rare plants
(via sciencedaily.com) Original source A research team is mapping out new modeling strategies so that proposed energy development and the management of rare plants don't necessarily have to be mutually exclusive endeavors.
Published Changes in Earth's orbit may have triggered ancient warming event
(via sciencedaily.com) Changes in Earth's orbit that favored hotter conditions may have helped trigger a rapid global warming event 56 million years ago. Researchers found the shape of Earth's orbit, or eccentricity, and the wobble in its rotation, or precession, favored hotter conditions at the onset of the PETM and that these orbital configurations together may have played a role in triggering the event.
Published Fish larvae find their way using external cues
(via sciencedaily.com) The first global analysis of larval orientation studies found that millimeter-size fish babies consistently use external cues to find their way in the open ocean. There are many external cues available to marine fish including the Sun, Earth's magnetic field, and sounds. The new study offers important insight into understanding this perilous phase of marine fish.
Published Study examines feeding damage caused by spotted lanternflies on young maples
(via sciencedaily.com) Original source Short-term, heavy feeding by adult spotted lanternflies on young maple trees inhibits photosynthesis, potentially impairing the tree's growth by up to 50 percent, according to a new study.
Published Fossil site reveals giant arthropods dominated the seas 470 million years ago
(via sciencedaily.com) Discoveries at a major new fossil site in Morocco suggest giant arthropods -- relatives of modern creatures including shrimps, insects and spiders -- dominated the seas 470 million years ago.
Published Signals from the ionosphere could improve tsunami forecasts
(via sciencedaily.com) The powerful volcanic eruption in January 2022 created ripple effects throughout the world's atmosphere and oceans. Analysis of the Hunga Tonga eruption shows how signals from the ionosphere could help monitor future volcanoes and tsunamis.
Published Finding faults deeply stressful
(via sciencedaily.com) Evidence that a complete stress release may have contributed to the 2011 Tohoku earthquake that broke records. Both sedimentary formations above and below the plate boundary fault lie in the stress state of normal faults in which vertical stress is greater than maximum horizontal stress. The new data show good consistency with previous results above the fault -- at the boundary between the North American plate and the subducting Pacific plate -- suggesting that combining geophysical data and core samples to comprehensively investigate stress states is effective.
Published Fresh understanding of ice age frequency
(via sciencedaily.com) A chance find of an unstudied Antarctic sediment core has led researchers to flip our understanding of how often ice ages occurred in Antarctica.
Published Earthquake lab experiments produce aftershock-like behavior
(via sciencedaily.com) Earthquakes are notoriously hard to predict, and so too are the usually less-severe aftershocks that often follow a major seismic event.
Published The evolution of Asia's mammals was dictated by ancient climate change and rising mountains
(via sciencedaily.com) A new study compiles data on more than 3,000 species to show how climate and geologic changes across Asia over the last 66 million years have shaped the evolution of the continent's mammals.
Published Exploring the deep: Drones offer new ways to monitor sea floor
(via sciencedaily.com) Researchers have developed a novel method for measuring the earth's crust on the seafloor. A lightweight geodetic measurement device was mounted on a sea-surface landing unmanned aerial vehicle (UAV). The mobility of this new system will enable rapid, efficient collection of real-time deep seafloor information, which is critical for understanding earthquake risk, as well as various other oceanographic observations.
Published Monitoring 'frothy' magma gases could help evade disaster
(via sciencedaily.com) Volcanic eruptions are dangerous and difficult to predict. A team has found that the ratio of atoms in specific gases released from volcanic fumaroles (gaps in the Earth's surface) can provide an indicator of what is happening to the magma deep below -- similar to taking a blood test to check your health. This can indicate when things might be 'heating up.' Specifically, changes in the ratio of argon-40 and helium-3 can indicate how frothy the magma is, which signals the risk of different types of eruption. Understanding which ratios of which gases indicate a certain type of magma activity is a big step. Next, the team hopes to develop portable equipment which can provide on-site, real-time measurements for a 24/7 volcanic activity monitoring and early warning system.
Published Earth can regulate its own temperature over millennia, new study finds
(via sciencedaily.com) A new study confirms that the planet harbors a 'stabilizing feedback' mechanism that acts over hundreds of thousands of years to keep global temperatures within a steady, habitable range.
Published Unlocking deep carbon's fate
(via sciencedaily.com) Original source Carbon dioxide in the deep Earth may be more active than previously thought and may have played a bigger role in climate change than scientists knew before, according to a new study.
Published Desert dust collected from glacier ice helps document climate change
(via sciencedaily.com) Researchers are using dust trapped in glacier ice in Tibet to document past changes in Earth's intricate climate system -- and maybe one day help predict future changes.
Published Evolution of tree roots may have driven mass extinctions
(via sciencedaily.com) Original source A study has found evidence that the evolution of tree roots over 300 million years ago triggered mass extinction events through the same chemical processes created by pollution in modern oceans and lakes.
Published Earth's oldest stromatolites and the search for life on Mars
(via sciencedaily.com) The earliest morphological traces of life on Earth are often highly controversial, both because non-biological processes can produce relatively similar structures and because such fossils have often been subjected to advanced alteration and metamorphism. Stromatolites, layered organo-sedimentary structures reflecting complex interplays between microbial communities and their environment, have long been considered key macrofossils for life detection in ancient sedimentary rocks; however, the biological origin of ancient stromatolites has frequently been criticized.