Showing 20 articles starting at article 941
< Previous 20 articles Next 20 articles >
Categories: Biology: Marine, Geoscience: Earth Science
Published Evolutionary imbalance explains global plant invasions
(via sciencedaily.com) Original source Plant species from certain geographic regions are more successful in spreading outside their native ranges than others -- but why? Ecologists provide answers by exploring how the ecological and evolutionary histories of plants can influence their relationships with humans and their success as invaders.
Published Tiny mineral inclusions picture the chemical exchange between Earth's mantle and atmosphere
(via sciencedaily.com) Original source Using synchrotron techniques, scientists have unveiled important information on The Great Oxidation Event by studying apatite inclusions in zircon crystals from old magmas.
Published Arctic soil methane consumption may be larger than previously thought and increases in a drier climate
(via sciencedaily.com) Original source A recent study finds that Arctic soil methane uptake may be larger than previously thought, and that methane uptake increases under dry conditions and with availability of labile carbon substrates.
Published Coastal fisheries show surprising resilience to marine heat waves
(via sciencedaily.com) New research found that marine heat waves -- prolonged periods of unusually warm ocean temperatures -- haven't had a lasting effect on the fish communities that feed most of the world. The finding is in stark contrast to the devastating effects seen on other marine ecosystems cataloged by scientists after similar periods of warming, including widespread coral bleaching and harmful algal blooms.
Published Using evidence from last Ice Age, scientists predict effects of rising seas on coastal habitats
(via sciencedaily.com) Original source The rapid sea level rise and resulting retreat of coastal habitat seen at the end of the last Ice Age could repeat itself if global average temperatures rise beyond certain levels, according to an analysis by an international team of scientists.
Published Unveiling global warming's impact on daily precipitation with deep learning
(via sciencedaily.com) Original source A research team has conclusively demonstrated that global warming stands as primary driver behind the recent increase in heavy rainfall and heatwaves using deep learning convolutional neural network.
Published Direct formation of sulfuric acid in the atmosphere
(via sciencedaily.com) In the atmosphere, gaseous sulfuric acid can form particles that influence the physical properties of clouds. Thus, the formation of sulfuric acid in the gas phase directly affects the radiative forcing and Earth's climate. In addition to the known formation from sulfur dioxide, researchers have now been able to demonstrate through experiments that there is another formation pathway that has been speculated about for decades. Sulfuric acid in the atmosphere can also be formed directly by the oxidation of organic sulfur compounds. This new production pathway can be responsible for up to half of the gaseous sulfuric acid formation over the oceans and is thus of high importance for climate projections -- especially over the oceans of the Southern Hemisphere.
Published Rare 14-ft smalltooth sand tiger shark washes up on Irish coast
(via sciencedaily.com) Original source Scientists believe a huge 14ft smalltooth sand tiger shark, which washed up at Kilmore Quay, Co. Wexford, earlier this year, represents the first of its species to have been found in Ireland's waters. Two other individuals of the same species also washed up on the UK coastline, suggesting this species' geographic range has shifted. The scientists believe these rare finds may offer a window into the future, with more and more species traditionally confined to more tropical waters expected to visit Irish and British waters.
Published Long time lag in heavily polluted regions as improvement in air quality warms climate
(via sciencedaily.com) Original source Scientists have revised previous assumptions about the influence of pollutant particles, known as aerosols, on global warming. Using satellite data, researchers have shown that the relationship between water droplets in clouds and aerosol concentration is more non-linear than previously thought. Specifically, in heavily polluted regions, the additional warming of the Earth resulting from better air quality could occur much later than originally believed -- perhaps as much as 20 or 30 years later than expected.
Published New species of marine bacteria isolated from a deep-sea cold seep
(via sciencedaily.com) Original source Researchers have isolated a new strain of marine bacteria with unique characteristics from the ocean seabed.
Published Enhanced chemical weathering: A solution to the climate crisis?
(via sciencedaily.com) Original source Could blending of crushed rock with arable soil lower global temperatures? Researchers study global warming events from 40 and 56 million years ago to find answers.
Published Historic red tide event of 2020 fueled by plankton super swimmers
(via sciencedaily.com) Original source A major red tide event occurred in waters off Southern California in the spring of 2020, resulting in dazzling displays of bioluminescence along the coast. Now, for the first time, a study has pinpointed how the plankton species Lingulodinium polyedra -- a dinoflagellate -- was able to create such an exceptionally dense bloom. The answer lies in dinoflagellates' remarkable ability to swim, which lends them a competitive advantage over other species of phytoplankton.
Published Past abrupt changes in North Atlantic Overturning have impacted the climate system across the globe
(via sciencedaily.com) Original source Abrupt climate changes have affected rainfall patterns worldwide in the past, especially in the tropical monsoon region, a new study shows. An international team of scientists used dripstones from globally distributed caves together with model simulations to analyze the global impacts of rapid Northern-Hemisphere temperature increases, the widely studied Dansgaard-Oeschger events, that repeatedly occurred during the last ice age. The comparison of stalagmite and model data shows in unprecedented detail how these abrupt changes and the associated modifications of the Atlantic overturning circulation, AMOC for short, have affected global atmospheric circulation.
Published Due to sea-ice retreat, zooplankton could remain in the deep longer
(via sciencedaily.com) Original source Due to intensifying sea-ice melting in the Arctic, sunlight is now penetrating deeper and deeper into the ocean. Since marine zooplankton respond to the available light, this is also changing their behavior -- especially how the tiny organisms rise and fall within the water column. As an international team of researchers has now shown, in the future this could lead to more frequent food shortages for the zooplankton, and to negative effects for larger species including seals and whales.
Published Wastewater pipe dig reveals 'fossil treasure trove'
(via sciencedaily.com) Original source A new article describes the 266 fossil species as one of the richest and most diverse groups of three-million-year-old fauna ever found in New Zealand. At least ten previously unknown species will be described and named in future research. Fossils of the world's oldest known flax snails, an extinct sawshark spine, and great white shark teeth have all been found in a mound of sand excavated from beneath Mangere Wastewater Treatment Plant in 2020.
Published Paper cups are just as toxic as plastic cups
(via sciencedaily.com) Original source Replacing single use plastic cups with paper ones is problematic. Researchers show that a paper cup that ends up in nature can also cause damage as they also contain toxic chemicals.
Published 2023 Global Heat Wave: July brought the hottest three weeks observed so far
(via sciencedaily.com) Original source The first three weeks of July 2023 have been the hottest global three-week period so far. Researchers report that the European population's exposure to heat was highest in Italy.
Published Loss of Antarctic sea ice causes catastrophic breeding failure for emperor penguins
(via sciencedaily.com) Original source Emperor penguin colonies experienced unprecedented breeding failure in a region of Antarctica where there was total sea ice loss in 2022. The discovery supports predictions that over 90% of emperor penguin colonies will be quasi-extinct by the end of the century, based on current global warming trends.
Published National parks support wildlife inside and outside their borders
(via sciencedaily.com) Fresh research suggests that national parks enhance bird diversity inside their borders. Large parks also support higher diversity of both birds and mammals in nearby unprotected areas.
Published Scientists solve mystery of why thousands of octopus migrate to deep-sea thermal springs
(via sciencedaily.com) Original source Researchers used advanced technology to study a massive aggregation of deep-sea octopus gathered at thermal springs near an extinct underwater volcano off the coast of Central California. Warm water from hydrothermal springs accelerates development of octopus embryos, giving young octopus a better chance of survival. The Octopus Garden is the largest known aggregation of octopus on the planet -- the size of this nursery, and the abundance of other marine life that thrives in this rich community, highlight the need to understand and protect the hotspots of life on the deep seafloor from threats like climate change and seabed mining.