Integrated crop-livestock system brings more sustainability to flooded rice.
Plant-derived chemicals called cardenolides - like digitoxin - have long been used to treat heart disease, and have shown potential as cancer therapies. But the compounds are very toxic, making it difficult for doctors to prescribe a dose that works without harming the patient. Researchers now show that the wormseed wallflower could be used as a model species to elucidate how plants biosynthesize cardenolides, knowledge that could aid the discovery and development of safer drugs.
New research suggests that large-scale environmental factors influence the size of one of the ocean's most abundant forage species. Recently, scientists found that anthropogenic influences affected menhaden in the Atlantic more than in the Gulf, where environmental factors were the more dominant predictors of growth.
Using existing data from controlled experiments and computer simulations, researchers with the University of Tennessee Institute of Agriculture have found that host contact rates and habitat structure affect transmission rates of Bsal among eastern newts, a common salamander species found throughout eastern North America.
Chemotherapeutic drugs, also known as antineoplastic agents, that are prescribed to treat a range of cancer types, enter the aquatic environment via human excretion and wastewater treatment facilities. A review published in Environmental Toxicology and Chemistry indicates that very few studies have characterized the effects of antineoplastic agents that are released into aquatic environments.
In most animals, females are larger than males, but in most mammals, males are larger than females. A new analysis published in Mammal Review examines the potential drivers of these differences.
A new study by researchers at Woods Hole Oceanographic Institution (WHOI) and their international colleagues found that freshwater runoff from rivers and continental shelf sediments are bringing significant quantities of carbon and trace elements into parts of the Arctic Ocean via the Transpolar Drift--a major surface current that moves water from Siberia across the North Pole to the North Atlantic Ocean.
Working on the reefs around Moorea in French Polynesia, an international team of scientists exposed 40 pairs of clownfish to recordings of natural reef sounds or motorboat noise for up to two days. Motorboat noise caused clownfish to hide in the protective tentacles of their host anemone, move less into open water to feed and to be more aggressive towards domino damselfish that also reside in the anemone.
It is known that crown of thorns starfish lie in wait as algae-eating young before attacking coral. But new research from the University of Sydney shows the starfish that devastates reef habitats can remain in its juvenile vegetarian state for at least 6.5 years. This has big implications for how the coral predator is managed on the Great Barrier Reef.
The earliest human inhabitants of the Amazon created thousands of artificial forest islands as they tamed wild plants to grow food, a new study shows.