An international team has conducted the first-ever global survey of the ecological diversity of viruses in the oceans during expeditions aboard a single sailboat. They identified nearly 200,000 marine viral species, which vastly exceeds the 15,000 known from prior ocean surveys of these waters and the approximately 2,000 genomes available from cultured viruses of microbes. Their findings, appearing April 25 in the journal Cell, have implications for understanding issues ranging from evolution to climate change.
Regardless of whether we are dealing with a floodplain landscape or an entire national park, the success of a restoration project depends on more than just the reintroduction of individual plant or animal species into an area. In the latest issue of Science, a international team of researchers reveals it is more a matter of helping the damaged ecosystem to regenerate and sustain itself.
The taxonomic and trophic composition of freshwater fishes in the Ohio River Basin has changed significantly in recent decades, possibly due to environmental modifications related to land use and hydrology, according to a study published April 24 in the open-access journal PLOS ONE by Mark Pyron of Ball State University, and colleagues.
A UA team shows that evolution is driven by dependency on other species within ecological communities - testing a long-held idea of the UA's late, great George Gaylord Simpson.
Advanced molecular techniques have revealed the diversity of a little-understood group of ocean microbes called protists, according to a new publication in Scientific Reports. The project analyzed samples collected by the global Tara Oceans expedition, documenting genomes that will help researchers identify protists throughout the ocean.
Changes in temperature and precipitation have already impacted the amount of nitrogen introduced into US waterways. This can lead to toxin-producing algal blooms or low-oxygen dead zones called hypoxia.
Picos de Europa National Park has given its name to a new species of perennial brome-grass from Spain. Having worked on the systematics of the genus Bromus for a long time, the scientists were surprised to record previously unrecognised specimens from the well-studied "Fuente la Escalera" area in the National Park. Identified as a new species and recorded from a total of eleven locations, the plant is now described in the open access journal PhytoKeys.
Early melting of winter snow is driving the early arrival of spring in parts of the Arctic.
Up to about 19% more carbon dioxide than previously believed is removed naturally and stored underground between coastal trenches and inland chains of volcanoes, keeping the greenhouse gas from entering the atmosphere, according to a study in the journal Nature.
Researchers at British Antarctic Survey studying hi-res satellite imagery have discovered that emperor penguins at the Halley Bay colony in the Weddell Sea have failed to raise chicks for the last three years.