Red wolves, once nearly extinct, again teeter on the abyss. New research finds red wolf ancestry in Texas -- providing opportunities for additional conservation action and difficult policy challenges. Michigan Tech researcher Kristin Brzeski and others have identified red wolf "ghost alleles" in canid population on Galveston Island.
The world's primary archive of tree ring data, which holds more than 52 million cost-free records spanning 8,000 years of history, has gotten a makeover by scientists from four countries committed to making science more accessible. The International Tree Ring Data Bank, developed in 1974 and populated by hundreds of contributing scientists and agencies, had only been used for a handful of studies at a global scale due to inconsistent data accessibility and formatting.
A new study shows that several species of bats are giving Madagascar's rice farmers a vital pest control service by feasting on plagues of insects. And this, a zoologist at the University of Cambridge believes, can ease the financial pressure on farmers to turn forest into fields.
Researchers at the Nara Institute of Science and Technology (NAIST) report AGAMOUS and CRABS CLAW partner in a feed-forward system to terminate the floral meristem and form the gynoecium in Arabidopsis plants. The findings give new understanding on the epigenetics that determine fruit number and size.
Researchers at the University of New Hampshire have found unprecedentedly high levels of nitrate, an essential plant nutrient, in streams and watersheds of Puerto Rico for a year after two consecutive major hurricanes in 2017. This high amount of nitrate may have important climate change implications that could harm forest recovery and threaten ecosystems along Puerto Rico's coastline by escalating algal blooms and dead zones.
Bioplastics are often promoted as an environmentally and climate-friendly alternative to conventional petroleum-based plastics. However, a recent study from the University of Bonn suggests that shifting to plant-based plastics could have less positive effects than expected. Specifically, an increased consumption of bioplastics in the following years is likely to generate increased greenhouse gas emissions from cropland expansion on a global scale. The study is published in the scientific Journal "Environmental Research Letters".
The plant hormone jasmonic acid also performs a function that was previously unknown. It ensures that the leaf pores close when leaves are injured. For the plant, this could be an emergency signal.
How much of a reef's ability to withstand stressful conditions is influenced by the type of symbiotic algae that the corals hosts? New work investigates how the nutrients algae share with their coral hosts varies between species and what this could mean for a coral's ability to survive in a changing climate. They determined that in the wake of a bleaching event, even an algal tenant that's poor provider may be better than no provider.
An inventory of New York City's expansive yet overlooked 'forested natural areas' reveals that, contrary to previous reports, native species still comprise about 82 percent of the city's forest stands. In the forests' mid- and understory, however, the proportion of native species fell significantly, suggesting that their dominance could decline in coming decades.
Approximately 88 percent of wheat production is susceptible to yellow rust. Researchers have new results regarding the fungus, which evolves quickly to produce new, virulent strains.