ScienceDaily: Earth & Climate News |
| Not acting like themselves: Antidepressants in environment alter crayfish behavior Posted: 15 Jun 2021 10:22 AM PDT Expose crayfish to antidepressants, and they become more outgoing -- but that might not be such a positive thing for these freshwater crustaceans, according to a new study. |
| Use of PFAS in cosmetics 'widespread,' new study finds Posted: 15 Jun 2021 10:22 AM PDT Many cosmetics sold in the United States and Canada likely contain high levels of per- and polyfluoroalkyl substances (PFAS), a potentially toxic class of chemicals linked to a number of serious health conditions, according to new research. |
| Human-driven climate change only half the picture for krill Posted: 15 Jun 2021 10:22 AM PDT New research about the fate of krill -- one of the most abundant species on Earth -- during this century has important implications for not only the Antarctic food web, but for the largest commercial fishery in the Southern Ocean. |
| Air pollution exposure during pregnancy may boost babies' obesity risk Posted: 15 Jun 2021 10:22 AM PDT New research shows pregnant women exposed to higher levels of air pollution have babies who grow unusually fast in the first months after birth, putting on excess fat that may put them at risk of obesity and related diseases later in life. |
| Baltic herring larvae appear earlier and grow faster due to climate change Posted: 15 Jun 2021 10:21 AM PDT Conditions during Baltic herring spawning may have cascading effects on the whole Baltic ecosystem. |
| Fungal spores from 250-year-old collections given new lease of life Posted: 15 Jun 2021 10:21 AM PDT The biological and historical diversity in museum collections is staggering, with specimens collected across centuries by some of the most famous scientists in history. In a new study, researchers successfully revived museal fungal specimens that were more than 250 years old and used the live cultures for whole genome sequencing and physiological experiments. |
| Bycatch risk for dolphins and porpoises in global small-scale fisheries Posted: 15 Jun 2021 10:21 AM PDT Marine scientists assessed the risk posed by small-scale fisheries to all 72 species of toothed whales found throughout the world's oceans. They found that this risk was highest in the Central Indo-Pacific, Temperate Northern Pacific, Temperate South America and the Western Indo-Pacific. |
| Untapped rice varieties could sustain crop supplies in face of climate change Posted: 15 Jun 2021 10:21 AM PDT Local rice varieties in Vietnam could be used to help breed improved crops with higher resilience to climate change, according to a new study. Researchers are aiming to identify varieties that can survive an increasingly unpredictable climate. |
| Small streams in agricultural ecosystems are heavily polluted with pesticides Posted: 15 Jun 2021 10:21 AM PDT Pesticides safeguard agricultural yields by controlling insects, fungi, and weeds. However, they also enter streams and damage the aquatic communities. In a nationwide monitoring program, scientists have shown that the governmental thresholds for pesticides are generally too high and that these levels are still exceeded in over 80% of water bodies. The loss of biodiversity can only be halted if the environmental risk assessment of pesticides is revised. |
| Heat from below: How the ocean is wearing down the Arctic sea ice Posted: 15 Jun 2021 10:21 AM PDT The influx of warmer water masses from the North Atlantic into the European marginal seas plays a significant role in the marked decrease in sea-ice growth, especially in winter. |
| Plants use a blend of external influences to evolve defense mechanisms Posted: 15 Jun 2021 10:21 AM PDT Plants evolve specialized defense chemicals through the combined effects of genes, geography, demography and environmental conditions. |
| New research finds 1M early deaths in 2017 attributable to fossil fuel combustion Posted: 14 Jun 2021 03:56 PM PDT An international team of researchers has determined what sources contribute to pollution and the health effects they have on global, regional and smaller scales. |
| Biodiversity 'hotspots' imperiled along California's streams Posted: 14 Jun 2021 12:39 PM PDT A study of woodland ecosystems that provide habitat for rare, endangered species along streams, rivers throughout California reveals some ecologically important areas are inadvertently benefiting from water humans are diverting for their own needs. Though it seems a short-term boon to these ecosystems, the artificial supply creates an unintended dependence on its bounty, threatens the long-term survival of natural communities and spotlights the need for changes in the way water is managed across the state. |
| Barks in the night lead to the discovery of new species Posted: 14 Jun 2021 06:06 AM PDT A new study finds that the barking hyraxes are a separate species from their shrieking neighbors. The newly described species, Dendrohyrax interfluvialis, populates the wet and dry forests that lie between the two rivers in coastal regions of southeastern Ghana, southern Togo and Benin, and southwestern Nigeria. The researchers based their conclusion on the distinctive calls combined with anatomical and genetic differences they identified among tree hyrax populations. |
| Noise and light pollution can change which birds visit our backyards Posted: 10 Jun 2021 10:57 AM PDT Using more than 3.4 million citizen scientist observations of 140 different bird species across the continental U.S., researchers found that common bird species avoided areas with excessive noise. In areas where light and noise pollution both occurred, many additional species avoided backyard feeders. Seasonal patterns and variation in the length of night also influenced how species respond to light pollution. |
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