Fish extinctions alter critical nutrients in water, study shows
...the most heavily fished species led to the fastest declines in nutrient recycling," said lead author Peter McIntyre, a postdoctoral researcher at Wright State University who was a graduate student in Cornell's Department of Ecology and Evolutionary Biology when he conducted the study. "Fishermen are targeting...AGU Journal highlights -- February 23, 2007
...ons and found that the strength of the AMOC always declines when greenhouse gases are increased by one percent per year, with largest declines in those experiments with the strongest initial AMOC. Further, they confirm that changes in surface ...Scientists warn of climate change risk to marine turtles
...uld lead to extreme levels of infant mortality and declines in nesting beaches across the USA. Research published this week in the journal Global Change Biology analyses 26 years of loggerhead turtle nesting and climate data and compares the findings with models for future temperatures. The study shows just...AAAS Oceans Panel examines advances in science and technology to boost fishery sustainability
...o revamp fisheries and ocean management because of declines or changes in marine populations around the world, a panel at American Association for the Advancement of Science (AAAS) annual conference in San Francisco will look at whether advances in science and innovations in technology can produce a spectrum ...The last wild hunt -- Deep-sea fisheries scrape bottom of the sea
... to fish out stocks and move on, we now see global declines of targeted species." Ironically, this highly d...is almost bare," says Baker. "Given the documented declines and the lack of life history data to know what recovery times would even be, conservation measures i...UCI awarded $3.5 million for stem cell research
...nic stem cells to generate into desired cell types declines due to mitochondrial dysfunction. If this hypothesis is confirmed, procedures for protecting mitochondria will be developed to greatly increase the therapeutic potential of human embryonic stem cells. Kyoko Yokomori, associate professor of biologic...Investigating the trochus 'El Dorado'
...ela people to believe they are not responsible for declines in the numbers of trochus. "Fishers in many parts of the Pacific commonly fail to make the connection between their fishing activity and the decline or collapse of fish and marine stocks," he says. Dr Foale argues that sharing cultural and scient...Risk of extinction accelerated due to interacting human threats
...on declines. The study also found that the rate of declines was much accelerated when populations were exposed...e than one threat declined drastically. Population declines were up to 50 times faster when all threats operate at their maximum extent upon a given population....Cambodian vulture nests offer hope for species
...ultures. Diclofenac has lead to global population declines as high as 99 percent in slender-billed and other vulture species. Diclofenac is now being slowly phased out in South Asia, but not at a pace that assures the recovery of the vultures. Because Diclofenac is almost entirely absent from use in Cambodia...Human's ecological footprint in 2015 and Amazonia revealed
...e has shown how large scale forest clearings cause declines in biodiversity and the availability of forest products. Yet some important changes in the rainforests, and in the ecosystem services they provide, have been underappreciated until recently. Emerging research indicates land use in the Amazon goes...Big vegetarian mammals can play a critical role in maintaining healthy ecosystems, study finds
...nct in many places. Our results suggest that these declines are likely to have complicated, and often unanticipated, consequences for the entire ecosystem." North America is one place where mammoths, giant sloths, camels and other large herbivores once were common. But most of these mega-fauna species were e...WHSRN awarded major grant to foster shorebird conservation throughout the Western Hemisphere
...otocols to test hypotheses on causes for shorebird declines to serve as an authoritative common basis for action; Increase the capacity of Argentina, Brazil, and Uruguay to conserve migratory shorebird populations using rice fields during the non-reproductive season, through information exchange and inter...Climate change has surprising effect on endangered naked carp
...r-water fish. Ammonia-N secretion by the kidneys declines by a surprising 70 percent, and urine flow decreases drastically to less than 5 percent of its rate in the freshwater river water. "In other words, the kidney changed from an organ which excreted water at a greater rate than salt in river-water, to...CU study reveals pros and cons of therapy for lead exposure
...eated with the lead-removing chemical, they showed declines in their learning and behavior that were similar to the rats that were exposed to lead. Chelating drugs, which bind to lead and other metals in the blood, are increasingly being used for the treatment of autism in children. "Although these drugs are ...Study finds oysters can take heat and heavy metals, but not both
...ng a fundamental explanation for documented oyster declines in the wild. The effect also reveals an additional impact that warming coastal waters may have on cold-blooded organisms. Investigating the mechanisms by which the heavy metal cadmium and temperature can each affect metabolic processes in oysters, ...Drop in acid rain altering Appalachian stream water
...is a region bigger than Pennsylvania, where we see declines in both sulfur and nitrogen emissions. Although that is a positive thing, it is having an influence, it appears, on the forest ecosystem. Higher amounts of carbon dioxide in the soil means more of it ultimately may be emitted back to the atmosphere ...Extreme life, marine style highlights 2006 ocean census
...f the CoML agree with recent studies showing steep declines of most wild populations of marine animals that people eat," says Dr. Grassle. "The past richness of the oceans in many near shore regions is hard for people today to believe." In such archives as taxes on salt to cure fish, Census historians recon...Research highlights how farmers' agri-environment schemes could do more for wildlife
...tone curlews. However, being able to reverse the declines of more widespread species such as skylarks and ye...ch shows that although these schemes have reversed declines of rare species found only in limited areas, they have yet to prove capable of doing the same for mo...Small, smaller, smallest -- The plight of the vaquita
...e and they cannot be expected to detect population declines or increases on an acceptable timescale for such a critically endangered species. According to one analysis, a single survey in 2006 or 2007 would have a probability of only 11% of detecting a 3%/year decline and a 16% probability of detecting a 10%/...Brain wave changes in adolescence signal reorganization of the brain
...ty during sleep begin at about 11 years of age and declines 25% by age 14. The gender difference observed in delta intensity among the 12-14 year old children suggests that girls, on average, begin adolescent brain maturation at least one year earlier than boys. However, once they begin this maturational pr...