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ScienceDaily: Plants & Animals News |
| Posted: 19 May 2021 01:37 PM PDT The Paleozoic era culminated 251.9 million years ago in the most severe mass extinction recorded in the geologic record. Known as the 'great dying,' this event saw the loss of up to 96% of all marine species and around 70% of terrestrial species, including plants and insects. |
| Half of Guadeloupe's snakes and lizards went extinct after European colonization Posted: 19 May 2021 01:36 PM PDT A new study uses fossil and archaeological archives to demonstrate that colonial era extinctions in Guadeloupe occurred on a much more massive scale than previously thought, with more than 50% of the islands' squamate species disappearing in the centuries after 1492. |
| High levels of contaminants in killer whales Posted: 19 May 2021 09:07 AM PDT Little is known concerning environmental contaminants in predators at the top of a food chain. A study has demonstrated that new types of brominated flame retardants accumulate in the tissues of killer whales near Norway and are also passed on to nursing offspring. |
| A gentler strategy for avoiding childhood dental decay Posted: 18 May 2021 05:54 PM PDT By targeting the bonds between bacteria and yeast that can form a sticky dental plaque, a new therapeutic strategy could help wash away the build-up while sparing oral tissues, according to a new study. |
| Test detects childhood tuberculosis a year ahead Posted: 18 May 2021 08:48 AM PDT Researchers have developed a highly sensitive blood test that can find traces of the bacteria that causes tuberculosis (TB) in infants a year before they develop the deadly disease, according to a new study. |
| Why some pockets of conifer survive repeated forest fires Posted: 18 May 2021 08:48 AM PDT Researchers say topographic templates' can help forest conservation managers develop strategies for protecting and restoring the most fire-resistant parts of vulnerable forests across a range of ecosystems. |
| Adding antibodies to enhance photodynamic therapy for viral and bacterial disease Posted: 18 May 2021 08:48 AM PDT Photodynamic therapy, or using light to inactivate viruses, bacteria, and other microbes, has garnered promising results in recent decades for treating respiratory tract infections and some types of cancer. Researchers review the existing approaches and propose adding antibodies to enhance PDT efficacy. They provide a model to help expedite overall PDT development as a rapid response to emergent viral pandemic threats. |
| Grazing management of salt marshes contributes to coastal defense Posted: 18 May 2021 08:41 AM PDT Combining natural salt marsh habitats with conventional dikes may provide a more sustainable alternative for fully engineered flood protection. Researchers studied how salt marsh management can be optimized for coastal defense purposes. They found that grazing by both cattle and small herbivores such as geese and hare and artificial mowing can reduce salt marsh erosion, therefore contributing to nature-based coastal defense. |
| When one become two: Separating DNA for more accurate nanopore analysis Posted: 18 May 2021 08:41 AM PDT A new software tool will help bioinformaticians improve the quality and accuracy of their biological data, and avoid mis-assemblies. The fast, lightweight, user-friendly tool visualizes genome assemblies and gene alignments from the latest next generation sequencing technologies. |
| Mathematical model predicts effect of bacterial mutations on antibiotic success Posted: 18 May 2021 08:41 AM PDT Scientists have developed a mathematical model that predicts how the number and effects of bacterial mutations leading to drug resistance will influence the success of antibiotic treatments. |
| Linguistic and biological diversity linked Posted: 17 May 2021 04:47 PM PDT Cultural diversity -- indicated by linguistic diversity -- and biodiversity are linked, and their connection may be another way to preserve both natural environments and Indigenous populations in Africa and perhaps worldwide, according to an international team of researchers. |
| From Avocet to Zebra Finch: Big data study finds more than 50 billion birds in the world Posted: 17 May 2021 04:46 PM PDT There are roughly 50 billion individual birds in the world, a new big data study suggests - about six birds for every human on the planet. |
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