Scientists collaborate to assess health of global environment
...water usage in Chile's Atacama Desert or wood fuel harvesting in Zambia. Overall, the diminishing capacity of services to meet human demands reflects a global problem, Mooney said. Fifteen of the 24 services the assessment considered have been degraded over the last 50 years--most notably fresh water, fisheries...World's largest rainforest drying experiment completes first phase
...t management, because the time one must wait after harvesting timber from a forest before a second harvest will increase. Third, the observed sensitivity of large canopy trees in the forest to drought is greater than expected. Once the moisture that is stored in deep soil is depleted, then the large trees that...Oceans more vulnerable to agricultural runoff than previously thought, study finds
...ish poisoning, which can shut down mussel and clam harvesting for long periods of time. Another concern is hypoxia, or oxygen depletion, caused by excessive algae growth. As the algal mass sinks, it is consumed by bacteria, which use up most of the oxygen in the water as they multiply. The result is an oxygen-d...U-M scientist to talk about tissue engineering at AAAS
...e through artificial means. Typically it involves harvesting a small sample of cells, treating them in the lab, then reintroducing the cells into a damaged area, like a jaw bone damaged too badly to simply heal on its own. A tiny scaffold helps direct the engineered cells to the right place, then dissolves onc...New science sheds light on rebuilding fisheries
...ust four generations of fish. "And by selectively harvesting the largest fish, we end up changing the whole biology not only growth rates, but egg size, fecundity, feeding behavior... even the number of vertebrae we're changing an entire suite of traits," says Conover. "The scary part is that when we stoppe...New findings lead researchers to question basic assumptions of fisheries management
...ption has been that the spawners that remain after harvesting will produce plenty of larvae to replenish the population. According to Berkeley, however, elimination of older generations drastically reduces the ability of the population to replenish itself. Failure to account for the role of older fish in maint...Tips from the Journals of the American Society for Microbiology
...re no current requirements for U.S. states to test harvesting waters for the presence of human pathogens, such as Salmonella spp.," say the researchers. In the study oysters were harvested from thirty-six U.S. bays, twelve from the West, East, and Gulf coasts during the summer of 2002 and four bays per coast in...Reviewing scientists say proposed conservation measures unlikely to help whales
...riteria. Our analysis shows that the science-based harvesting plan known as the Revised Management Procedure (RMP) would be much more effective in encouraging growth of whale populations." Models developed by the group show that the RMP would likely result in significant increases in whale populations over a h...Key molecule in plant photo-protection identified
...reme examples of nanoscale engineering." The light harvesting system of plants consists of two protein complexes, Photosystem I and Photosystem II. Each complex features antennae made up of chlorophyll and carotenoid molecules that gain extra "excitation" energy when they capture photons. This excitation ener...Researchers discover direct link between agricultural runoff and massive algal blooms in the sea
...ish poisoning, which can shut down mussel and clam harvesting for long periods of time. Another concern is hypoxia, or oxygen depletion, which is caused by excessive algae growth. As the algal mass sinks, it is consumed by bacteria, which use up most of the oxygen in the water as they multiply. The result is an...New study links low fish supply to increased bushmeat hunting
...ion. But Atta-Mills specifically cited the intense harvesting of fish by the EU Fleet and called for policy reform to minimize the impact of foreign fleets on West African marine resources. The authors of the paper say that reforming EU policy will not completely resolve the problems of dimin...Leading scientists to discuss research applications for therapeutic cloning
...Seoul National University, reported the successful harvesting of human embryonic stem cells from a cloned embryo. The cloning symposium, called "Assisted Regenerative Medicine: The Future of ART?" and chaired by Linda Giudice, M.D., Ph.D., of Stanford University, will take place on Wednesday, Oct. 20. "Human re......phia. "The difficulty with previous techniques was harvesting a thick, uniform piece of skin and closing the wound where the incision was made, to minimize scarring," said Thomas Ray Stevenson, MD, president of the Plastic Surgery Educational Foundation and ASPS member. "Through this combination of surgical tec...