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The impact of human-caused noise pollution on birds
on October 11, 2019 at 5:19 pm
Anthropogenic noise pollution (ANP) is a globally invasive phenomenon impacting natural systems, but most research has occurred at local scales with few species. Researchers in this study investigated continental-scale breeding season associations with ANP for 322 bird species to test whether local-scale predictions are consistent at broad spatial extents for an extensive group of North American bird species in the continental United States.
Removing invasive mice from the Farallon Islands would benefit threatened birds
on October 10, 2019 at 12:57 pm
New research shows the significant negative impact that invasive, non-native house mice on the Farallon Islands are having to the threatened ashy storm-petrel. Original modeling by ecologists shows the potential impacts to the petrel's population if mice are allowed to remain. The super-abundant mice encourage migrating burrowing owls to stay on the island, who later in the winter switch from eating mice to preying on the petrels.
New large-sized insect species discovered in tropical forest
on October 9, 2019 at 1:39 pm
Scientists have studied the diversity of tropical parasitoid wasps for years. Parasitoid wasps are among the most species rich animal taxa on Earth, but their tropical diversity is still poorly known. Recently, the research group sampled Afrotropical rhyssine wasps, which are among the largest wasps.
How bats relocate in response to tree loss
on October 9, 2019 at 11:54 am
Identifying how groups of animals select where to live is important for understanding social dynamics and for management and conservation. In a recent study, researchers examined the movement of a maternity colony of big brown bats as a response to naturally occurring tree loss.
Nodulation connected to higher resistance against powdery mildew in legumes
on October 7, 2019 at 4:32 pm
Scientists have long known that nodulation is important to plant health. Nodulation occurs when nodules, which form on the roots of plants (primarily legumes), form a symbiotic relationship with nitrogen-fixing bacteria that deliver nutrients to the plant. This process is a key part of sustainable agriculture and makes legumes an important source of protein for much of the world. However, recent research shows that nodulation might positively impact the plant's microbiome in other ways.
Ant-plant partnerships may play unexpected role in ant evolution
on October 3, 2019 at 6:15 pm
Partnerships between ant and plant species appear to arise from -- but not drive -- rapid diversification of ants into new species.
Plants alert neighbors to threats using common 'language'
on October 3, 2019 at 5:57 pm
New research shows that plants can communicate with each other when they come under attack from pests.
First maps of areas suitable for spotted lanternfly's establishment in US and world
on October 3, 2019 at 2:35 pm
Maps identifying the areas suitable for establishment of the spotted lanternfly (SLF) in the United States and other countries have been published.
Genomes of parasitic mites harming the world's bees sequenced
on October 3, 2019 at 2:35 pm
Researchers sequenced the genomes of the two Varroa mite species that parasitize the honey bee. They found that each species of mite used its own distinct strategy to survive in its bee host, potentially overwhelming the bees' defenses. In addition to pointing to how scientists might vanquish these deadly intruders, the findings also shed light on how parasites and hosts evolve in response to one another.
Increasing precipitation extremes driving tree growth reductions across Southwest
on October 2, 2019 at 6:42 pm
As the Earth's temperature warms, its hydrological cycle kicks into overdrive - wet years get wetter, and dry years get drier. According to a new study, these increased rainfall extremes could have dire consequences for the semi-arid forests of the western U.S.
Extreme wildfires transforming forestlands into shrublands
on October 2, 2019 at 5:19 pm
Wildfire is transforming some forestlands into shrublands, a new study finds. The results suggest these forests, which are used to living with and even benefiting from fire, have not yet adapted to this newer regime of intense, high-severity fires.
Preventing future forest diebacks
on October 2, 2019 at 2:27 pm
Removing dead trees from the forests and reforesting on a large scale: this is the German Federal Government's strategy against 'Forest Dieback 2.0', researchers say. Ecologists call for other solutions.
Limited seed availability, dry climate hamper post-wildfire forest recovery
on October 2, 2019 at 11:59 am
A lack of tree seedling establishment following recent wildfires represents a crucial bottleneck limiting coniferous forest recovery in the western US, new research finds.
Multifactor models reveal worse picture of climate change impact on marine life
on September 30, 2019 at 5:15 pm
Rising ocean temperatures have long been linked to negative impacts for marine life, but a team has recently found that the long-term outlook for many marine species is much more complex -- and possibly bleaker -- than scientists previously believed.
Purple martin migration behavior perplexes researchers
on September 30, 2019 at 2:45 pm
Purple martins will soon migrate south for their usual wintertime retreat, but this time the birds will be wearing what look like little backpacks, so scientists can track their roosting sites along the way. The researchers recently discovered that purple martins are roosting in small forest patches as they migrate from North America to Brazil, an unexpected behavior.
Scientists connected fragments of pine savanna and new species keep showing up
on September 26, 2019 at 6:17 pm
By connecting small, restored patches of savanna to one another via habitat corridors at an experimental landscape within the Savannah River Site in South Carolina, a nearly 20-year-long study has shown an annual increase in the number of plant species within fragments over time, and a drop in the number of species disappearing from them entirely.
Mosquitoes more likely to lay eggs in closely spaced habitats
on September 26, 2019 at 6:17 pm
Patches of standing water that are close together are more likely to be used by mosquitoes to lay eggs in than patches that are farther apart.
The almond and peach trees genomes shed light on the differences between these close species
on September 25, 2019 at 4:34 pm
An international team led by researchers has sequenced the genome of the almond tree and compared it to that of its closest relative, the peach tree. The most substantive differences between these species, so closely related in terms of evolution, are accounted for by the variation created by mobile genetic elements. The results provide some unique insights into the recent evolution of both species and will be key tools in their genetic improvement.
Bee biodiversity barometer on Fiji
on September 23, 2019 at 12:22 pm
The biodiversity buzz is alive and well in Fiji, but climate change, noxious weeds and multiple human activities are making possible extinction a counter buzzword. Just as Australian researchers are finding colourful new bee species, some of them are already showing signs of exposure to environmental changes.
Ecologists find strong evidence of fishing down the food web in freshwater lake
on September 18, 2019 at 3:59 pm
Research by ecologists shows strong evidence in a freshwater lake of 'fishing down the food web' - the deliberate shift away from top predatory fish on the food chain to smaller species closer to the base. While the effect has historically been observed almost exclusively in marine ecosystems and ocean fisheries, there has been little evidence of the effect in freshwater ecosystems.