Tag: "biogenic" at biology news
INEEL microbiologist joins Japanese on expedition to tap marine-methane deposits
...termining if significant amounts of the methane is biogenic
in origin and whether or not this resource would be renewable." With core samples from 1109 to 1273 meters below the sea surface, the INEEL team will learn about the vertical distribution of the methanogen community. Researchers hope to answer two q...
7,000 feet under the Sea: LSU scientists take geology to great depths
... Gulf of Mexico is unique because it contains both biogenic
methane and thermogenic methane gases. Biogenic methane is formed by bacterial activity in sediment. This is the most common way that methane is formed. Thermogenic methane is formed when oil reservoirs beneath the sea floor get too hot and pressu...
Ancient oceans experienced a global surge in biological productivity
...Hermoyian and Owen wanted to find out whether this biogenic
bloom occurred only locally or was a worldwide phe...en. "One possibility for what occurred during the biogenic
bloom is that there was not an overall global increase in productivity, but instead, changing ocean ...
Analysis of impact studies reveals how bottom fishing affects seafloor denizens
...ts. As expected, largest negative impacts occur in biogenic
habitats, which are largely composed of relatively slow growing species, such as sponges and corals. The populations affected by bottom fishing range from corals, sea anemones, lobsters, shrimp, and crabs being most negatively affected, to starfi...
NIST 'microhotplate' may help search for extraterrestrial life
...y for use in space applications, such as detecting biogenic
(produced by living organisms) gases in planetary atmospheres, investigating organic materials on comets for studies of the history of the universe, or monitoring air quality in habitats. This advanced measurement system already has proven applicabl...
Grant from Vetlesen Foundation supports URI Graduate School of Oceanography Climate Research
...ed to determine variations in sedimentation and in biogenic
constituents such as pollen, fish remains, and plankton remains....
January GEOLOGY and GSA TODAY media highlights
... Anthropogenically induced changes in sediment and biogenic
silica fluxes in Chesapeake Bay. Steven M. Colman...we measured the accumulation of total sediment and biogenic
silica in long, continuous, well-dated sediment cores. The data show that biogenic
silica flux to se...
Northern climate, ecosystems driven by cycles of changing sunlight
...onmental qualities, including their composition of biogenic
silica, pollen and isotopes. The new data combine...nd of higher solar irradiance," Hu said. Data from biogenic
silica (single-celled algae that reflect lake productivity), North Atlantic sea ice, and baryllium-1...
Life in the universe takes orders from space
...s of carbon, hydrogen and nitrogen - the so-called biogenic
elements - in the cosmos. And that it is reasonable to assume that these elements might have undergone some amount of chemical evolution before life even began. According to Pizzarello, who studies meteorites from the collection at ASU (which has the...
Astonishing discovery over the Amazonian rain forest
... aerosol formed by atmospheric photochemistry from biogenic
precursors. This discovery is a breakthrough because for the first time a link can be demonstrated between isoprene emitted by forest vegetation and formation of water soluble fine particles. These aerosol particles give rise to the formation of haze...
Study: Emission of smog ingredients from trees is increasing rapidly
...ized. "If we don't understand what's going on with biogenic
(plant-produced) VOCs, we are not going to be able...ding of recent, current and anticipated changes in biogenic
VOC emissions is necessary to guide future air-quality policy decisions; they do not provide any evi...