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ScienceDaily: Earth & Climate News |
| Headwater refuges: Combined effect of drought and fire on stream communities Posted: 01 Dec 2021 10:36 AM PST Life is water, and water is life. This truism certainly applies to the Pacific coast, where streams and rivers function as the region's arteries. The water they carry fosters plant life and wildlife in Southern California's Mediterranean climate. They provide sanctuary during droughts and often serve as the nexus for recovery after fires. |
| When variations in Earth's orbit drive biological evolution Posted: 01 Dec 2021 08:19 AM PST Coccolithophores are microscopic algae that form tiny limestone plates, called coccoliths, around their single cells. They are responsible for half of the limestone produced in the oceans and therefore play a major role in the carbon cycle and in determining ocean chemistry. A team of scientists show that certain variations in Earth's orbit have influenced the evolution of coccolithophores. |
| Researchers unlock biogeographical secrets of deep-sea limpets Posted: 01 Dec 2021 08:19 AM PST Researchers have decoded for the first time the demographic history, genetic structure, and population connectivity of a deep-sea limpet widely distributed in vent and seep ecosystems in the Northwest Pacific. This study not only enhances our knowledge of the historical population divergence and contemporary gene flow of deep-sea organisms under the intricate interactions amongst local habitats, seafloor topography, and ocean currents, but also serves as a scientific basis for better conservation of marine biodiversity and more effective environmental management. |
| Posted: 30 Nov 2021 10:02 AM PST Botonists reveals that the unique timing of spore dispersal in the sensitive fern, known as Onoclea sensibilis, is determined by a structural mechanism of humidity-driven movement in spore bearing leaves. |
| Scientists develop lead-absorbing tape to boost viability of rising star in solar power industry Posted: 30 Nov 2021 10:02 AM PST Scientists describe development of a cost-effective Scotch-tape-like film that can be applied to perovskite solar cells and capture 99.9% of leaked lead in the event of solar cell damage. |
| Male animals are subject to stronger evolutionary pressures than females Posted: 30 Nov 2021 07:14 AM PST Male animals are subject to stronger selection pressures than females, which may allow populations to adapt to environmental change more efficiently. |
| Ancient lineage of algae found to include five 'cryptic' species Posted: 30 Nov 2021 07:14 AM PST All land plants originated from a single evolutionary event when freshwater algae got a foothold on land. The group of algae that would later give rise to land plants had already been living in freshwater and terrestrial habitats for over one billion years. A tiny group of these algae, most distantly related to land plants, still lives. A team homed in on one species, Chlorokybus, which lives in wet soil and rock cracks, to find that it contains not one, but at least five different species. |
| Warm-water habitat 'pays the bills,' allowing cold-water fish to fuel up Posted: 30 Nov 2021 05:42 AM PST New research shows that warm-water habitats can be critically important for the survival of cold-water fish such as trout and salmon. |
| Posted: 29 Nov 2021 12:50 PM PST Using a new microspectroscopic technique, scientists have found that steam disinfection of silicone-rubber baby bottle nipples exposes babies and the environment to micro- and nanoplastic particles. |
| Challenges to ongoing clean-up of burnt and unburnt nurdles along Sri Lanka’s coastline Posted: 29 Nov 2021 12:50 PM PST When a fire broke out on the deck of the M/V XPress Pearl cargo ship on May 20, 2021, an estimated 70-75 billion pellets of preproduction plastic material, known as nurdles, spilled into the ocean and along the Sri Lankan coastline. That spill of about 1,500 tons of nurdles, many of which were burnt by the fire, has threatened marine life and poses a complex clean-up challenge. |
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