Study: Emission of smog ingredients from trees is increasing rapidly
...easured and cataloged 2.7 million trees on 250,000 plots of land across the country. They calculated the VOC emissions for each tree and each plot and used their findings to map VOC levels nationally. The scientists compared survey data taken in the 1980s with those taken in the 1990s to determine how leve...Alaska scientists find Arctic tundra yields surprising carbon loss
...nt of carbon and nitrogen in plants and soils from plots of tundra that have been continually fertilized si...lity expected as a result of a warmer climate. The plots are part of a 20-plus-year project by Terry Chapin of IAB, and Gus Shaver of The Ecosystems Center a...Lehmann lovegrass won't succumb to fire
... up fifty-four experimental 2.5 acre (one hectare) plots at various locations on the Fort Huachuca Military... near Sierra Vista, Ariz. One-third of the plots contained only native grasses, one-third only non-native grasses, and one-third had a mix. She then ...New England forests at greater risk from air pollution
...composition to assign air-quality scores to forest plots and predict the impact of air pollution on forests. The models show, for example, that areas with dirtier air tend to have fewer species of lichens. The opposite is true for areas with cleaner air. With these models, Will-Wolf and others used data c...Cranberry breeding program may soon bear fruit for growers
...field. After evaluating HyRed for several years in plots in central and northern Wisconsin, in 2001 Zeldin and McCown released the variety to growers for further testing - making HyRed the first publicly available cranberry hybrid in more than three decades. Since then, the cultivar has been planted in tr...Earth, sky tapped in unique global climate change study
...hes like giant, protective umbrellas to shelter 80 plots of juniper, post oak and little bluestem grass. Bu...ke conditions. Under each canopy, 10 6-foot-square plots with various combinations of the three species resemble a booklet of green, leafy postage stamps. ...Natural enemies help scientists untangle tropical forest food webs
...-km stretch of track, in December 2001. In control plots the same biomass of plant material was removed from randomly chosen plant species that were not attacked by leaf miners. Ten to 12 months, or five to six leaf miner generations, later, the scientists returned to measure the difference the clearance ...Duke open-air experiment results could deflate hopes that forests can alleviate global warming
...e concentrations 1 times higher than today's, test plots of loblolly pines have indeed boosted their annual...towers to release extra gas onto the forested test plots the towers surround. The computerized system maintains CO2 concentrations of 1 times today's levels,...Carbon dioxide fertilization is neither boon nor bust
...uch as leaves, stems and roots, has been higher in plots given extra carbon dioxide. The average increase has been 24 percent, and there is no indication that the increase will not continue. But, Norby notes, while his colleagues have observed a sustained increase in leaf photosynthesis, the response to ca...Three personal ads for physics
...ootball-halftime shows, she draws her readers into plots lined with science. "Readers are more willing to embrace science if the science impacts the character," Asaro said. "People don't usually write about both the emotions tied to love and the intellectual details of science," Asaro explained. "It's usua...Want a side of algae with that? Hawaiian farmers sell seaweed by the seashore
... ditch from a shrimp-farming operation. The little plots of long ogo that are grown in the ocean release spores periodically, thereby replenishing the natural population. "This is actually repopulating the reef," says Nelson, a senior research scientist at ERL whose primary research focus is the Molokai p...Online calculator improves analysis of chemical data
...es the mathematical calculations needed to convert plots of mass spectrometry data into final results--a listing of the chemical components and concentrations of substances in a mixture of unknown composition.Mass spectrometry works by measuring the mass of single molecules within a chemical compound. It d...Golfing toward a greener environment
...b, as well as on the field in three-by-three meter plots at the O.J. Noer Turfgrass Research and Education ...leagues visually assessed the quality of the field plots from seed germination to the end of the sampling period. Turfgrass quality, color, density or germin...Pollutant-eating microbe could speed gasworks cleanup
...ested before in the laboratory and in agricultural plots but never before in a genuine contaminated field site. Other authors of the PNAS article, "Discovery of a novel bacterium, with distinctive dioxygenase, that is responsible for in situ biodegradation in contaminated sediment," include: Che Ok Jeo...Down and dirty: Airborne ozone can alter forest soil
...l carbon formation dropped off dramatically in the plots fumigated with a mix of ozone and carbon dioxide c...g its greenhouse effects. However, the soil in the plots exposed to an ozone/carbon dioxide mixture gained only half the carbon as plots fumigated with carbo......plant species. The researchers studied a number of plots in the Junner Koeland, a floodplain grassland along the river Overijsselse Vecht. Staatsbosbeheer uses cows to manage the grassland vegetation. However, the numerous rabbits and meadow voles grazing in the area actually consume more grass than the co...Using GPR to estimate tree root biomass
...tudy site in Georgia, setting out sample points on plots of loblolly pine that had been fertilized or irrigated or both. For GPR sampling, they passed the radar antenna across in one direction, then the other, electronically marking sampling points on the radar profile. When they finished GPR sampling, the...Improving fertilizer efficiency
... 30 pounds per acre of nitrogen in-season to their plots when indicated at early squaring, early bloom and peak bloom. In 2000, they applied 30 to 90 pounds per acre less nitrogen than a soil-test recommendation of 120 lbs. per acre and achieved yields similar to plants receiving 120 pounds per acre. In 2...UGA researchers use transgenic trees to help clean up toxic waste site
...nd whose total area is less than an acre. (Some 15 plots have four merA trees, 15 are nonengineered or "wild-type" trees and 15 received no trees at all, so there are 120 trees in the field test.) The form of mercury at the Danbury site is ionic mercury, a species that can be sequestered and transformed in......tics are examined and documented. Seeds from those plots can in turn be used to reintroduce trees into their native environments, and to develop improved varieties for long-term sustainable forests in both native environments and new regions. It's that kind of farseeing work that's being done in the mounta...