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Source: www.moreover.com --- 9 days ago
Also Included In: Infectious Diseases / Bacteria / Viruses; Water - Air Quality / Agriculture email to a friend printer friendly view / write opinions rate article Current Article Ratings: Patient / Public: Health Professional: Article Opinions: ... Source: www.ncbi.nlm.nih.gov --- 37 days ago
Related Articles Dinosaurs, hospital Ecosystems, and the future of family medicine. Ann Fam Med. 2008 Jul-Aug;6(4):368-9 Authors: Glazner C The continued presence of the family physician within hospital systems is key to family medicine remaining an attractive, viable specialty in the ever-evolving world of medicine. One physician muses about her place in this complex ecosystem and believes that family physicians lose their voice and thus risk their own extinction when they opt out of hospital practice. PMID: 18626038 [PubMed - indexed for MEDLINE] ...
Source: www.cbsnews.com --- 42 days ago
In the low-lying Cajun country west of New Orleans, where levees are largely nonexistent and the sea has been nibbling away the land for years, the looming threat of Hurricane Gustav has inspired a pervasive sense of dread. ... Source: www.springerlink.com --- 12 days ago
Abstract Riparian zones are an important transition between terrestrial and aquatic Ecosystems, and they function in nutrient cycling and removal. Non-native earthworms invading earthworm-free areas of North America can affect nutrient cycling in upland soils and have the potential to affect it in riparian soils. We examined how the presence of earthworms can affect riparian nutrient cycling and nutrient delivery to streams. Two mesocosm experiments were conducted to determine how (1) the biomass of earthworms and (2) earthworm species can affect nutrient flux from riparian zones to nearby streams and how this flux can affect streamwater nutrients and periphyton growth. In separate experiments, riparian soil cores were amended with one of four mixed earthworm biomasses (0, 4, 10, or 23 g m −2 ash-free dry mass) or with one of three earthworm species ( Aporrectodea caliginosa , Lumbricus terrestris , L . rubellus ) or no earthworm species. Riparian soil cores were coupled to artificial streams, and over a 36-day period, we measured nutrient leaching rates, in-stream nutrient concentrations, and periphyton growth. Ammonium leaching increased with increasing biomass and was greatest from the A. caliginosa treatments. Nitrate leaching increased through time and increased at a greater rate with higher biomass and from cores containing A. caliginosa . We suggest that the overall response of increased nitrate leaching [90% of total nitroge ... Source: www.ouce.ox.ac.uk --- 11 days ago
30/09/08 30 September 2008 - ... Source: www.springerlink.com --- 40 days ago
Abstract Bacterial communities in two shallow eutrophic aquatic Ecosystems (eastern China) were studied using culture-dependent methods, and their correlations with the other water parameters were analyzed. Although the values of the comprehensive trophic state index in Xizi Lake and Hangzhou Canal were almost identical, the abundances of cultivable bacterial communities, such as protein-hydrolyzing bacteria (PHB), fecal coliforms (FC), nitrogen-utilizing bacteria, phosphate-mineralizing bacteria, and cellulose-decomposing bacteria (CDB), differed significantly. They were much less in Xizi Lake than in Hangzhou Canal. Correlation analyses indicated that the abundances of physiological groups of bacteria were determined mainly by the biomasses of phytoplankton and zooplankton, rather than by the utilized substrates. Xizi Lake was an algae-dominated aquatic ecosystem, a situation that mainly arose from the influx of inorganic nutrients, and the Hangzhou Canal was bacteria-dominated due to the influx of organic sewage. Molecular characterization and phylogenetic analysis of isolates showed that there were 6 phylogenetic lineages out of 15 isolates screened from Xizi Lake, including γ-proteobacteria (5), β-proteobacteria (3), α-proteobacteria (2), actinobacteria (1), firmicutes (4), and bacteroidetes (1). While in Hangzhou Canal there were only 4 bacterial groups among 22 isolates, γ-proteobacteria comprised about 82%, α-proteobacteria ma ...
Source: www.srs.fs.usda.gov --- 11 days ago
This paper presents preliminary findings on a cash and contingent valuation (cv) experiment. The study replicates major elements of an earlier (1990) experiment, which solicited hypothetical and actual donations to benefit instream flows for Montana fisheries. Extensions of the earlier work include: repeat contacts to increase response rate, follow-up of the contingent valuation question to explore respondent certainty, and several question format treatments (payment card, as in the original study, and dichotomous choice). The sample populations are subsamples of licensed Montana resident and nonresident anglers. Dillman mailing procedures (five contacts) were used to reach potential respondents. Treatments included a replication of the 1990 payment card (PC) question format (mailed to an initial 1,250 resident and 1,250 nonresidents respectively) and a dichotomous choice (DC) format (mailed to 1,250 nonresidents). Response rates were higher for the PC compared to the DC format and for the cv treatments compared to cash. The resident and nonresident angler populations are quite different, with nonresidents tending to be older, richer, more avid and specialized anglers, and more conservation-minded. For the PC treatments, cv donation amounts averaged about double the cash (actual) donation amounts for both subsamples. In constant 2005 dollars, the PC values comparing 1990 and 2005 are similar for resident respondents. ... Source: www.medicalnewstoday.com --- 9 days ago
Humans living in communities often rely on friends to help get what they need and, according to researchers in the lab of Cameron Currie at the University of Wisconsin-Madison, many microbes, plants and animals benefit from 'friendly' associations too. The Currie team's study, which was funded by the National Science Foundation (NSF) and published in the Oct. ... Source: features.csmonitor.com --- 32 days ago
Paul Mankiewicz, a biologist, botanist, and erstwhile philosopher, has a vision for New York City. He calls it “zero discharge”: Not a drop of water should escape from the city without first making something grow. Rainwater should be caught and used to cultivate greenery. “Gray water” from showers, baths, and sinks should irrigate rooftop gardens. Trees [...] ... Source: www.physorg.com --- 32 days ago
(PhysOrg.com) -- Human activities such as fishing and water use are over-riding the effects of global warming on the Ecosystems that support the world`s water and fish supplies, experts have revealed. ... Source: www.moreover.com --- 6 days ago
Kansas City Infozine Oct 8 2008 9:49AM GMT ... Source: www.sacbee.com --- 1 day ago
More than 250 elementary and middle school students are expected to take part in a natural resources field day Friday at the Institute of Forest Genetics in Placerville. ... Source: live.eclipse.org --- 35 days ago
Event Date: October 15, 2008 4:30 pm GMT-8 Register Now Mike Milinkovich (Eclipse Foundation) Practitioner’s Guide to Software Ecosystems --> Abstract: There has been enormous interest in both academic and business circles in the role of Ecosystems as an emerging model for value creation in highly innovation-driven markets. But what does that mean in practice? In this webinar, Mike will introduce the fundamental concepts of ecosystem theory, and compare and contrast several well-known software business Ecosystems. It will be of interest to anyone who is interested in how ecosystem-driven innovations are going to impact their lives and businesses in the future. Total running time will be approximately 1 hour 9:30 am PDT / 12:30 pm EDT / 4:30 pm GMT - Convert to other time zones Thanks to Adobe for contributing their Adobe Acrobat Connect product to host this webinar. delicious | digg | dzone --> ... Source: www.thepetitionsite.com --- 35 days ago
The Bush/Cheney Administration has launched an all-out push to line our coasts with oil rigs that would pollute our waters, threaten dolphins and other marine wildlife and wreck coastal economies. According to federal energy officials, such drilling will have "no significant" impact on prices at the gas pump. But offshore drilling contaminates water, routinely spilling oil and toxic liquids into our oceans and releasing hazardous fumes into our air. It would have a significant impact on dolphins, sea turtles and other marine wildlife that need healthy oceans. The danger of contamination is even greater in waters prone to tropical storms and hurricanes. Hurricanes Katrina and Rita resulted in 124 separate spills and more than 740,000 gallons of petroleum products spilled into the Gulf of Mexico and fragile wetlands. We only have until September 15th to stop this awful plan! Please sign our letter below urging the Minerals Management Service to shelve the Bush/Cheney proposal for more harmful offshore drilling. ... Source: www2.warwick.ac.uk --- 21 days ago
Last updated: 14:56, Mon 22 Sep 2008 by David Skirvin Compare previous version ... Source: merredin.yourguide.com.au --- 5 days ago
AVON Catchment Council is about to begin $4.1 million dollars worth of work to improve the health of local environments. ... Find more results for Ecosystems on RSSMicro.com |
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Image: Arthur Koch What to do with decommissioned naval ships? Scrap them and make a quick buck? Well, at least one possible use for them is to create artificial reefs, just as the Cayman Islands intend to. The Caribbean diving haven will soon be scuttling the 2077 tonne USS Kittiwake to their shores, once ownership of the vessel is transferred from the US Maritime Association to the government. Image: Tierra Maya The 251ft Kittiwake has been anchored for years amongst the 'ghost fleet' of decommissioned vessels at Fort Eustis, Virginia. Built in 1945, the ship made numerous voyages between the United States’ east coast, the Caribbean and the Mediterranean in support of submarines and to conduct rescue missions for the US Navy. The vessel should attract large schools of fish to the deserted cabins and halls; much like the Russian destroyer sunk in 1996 by the Cayman Islands and now decorated in sponges and coral, whilst attracting a lot of divers. photographer unknown It may seem odd to be sinking boats intentionally, but it’s not a new idea. In Florida, there is a shipwreck heritage trail, with notable wreck sites from Key Largo to Key West. While some were sunk unintentionally, others have intentionally given themselves to the sea. The result is a wreck trail believed to be home to some 55 varieties of delicate corals and nearly 500 species of fish - recycling and reuse at its very best. Source 1 , 2 ...
President Bush recently directed his administration to consider creating the largest protected area on Earth by assessing a number of large, ecologically important ocean areas in the tropical Pacific for potential protection as marine national monuments Submitted by Annelies O. to Environment | Note-it! | Add a Comment ...
Coral reefs, often teeming with marine life, are among nature's most delicate organisms. A healthy coral reef can contain thousands of species; unfortunately, they are coming under immense pressure and their very survival is at risk. An … ...
The desert city of Phoenix depends on an extensive canal system to bring water to farms and homes. But artificial lakes and canal systems along with extensive groundwater pumping have had unintended effects on the ecosystem, scientists say. --by Margaret Coulombe ...