But this hunt is neither about managing a wildlife population that has exceeded the carrying capacity of its habitat, nor about putting healthy food on the table. Instead, this hunt is about what the great conservationist and thoughtful hunter Aldo Leopold, called a “certificate” — a trophy proving that it’s owner has “been somewhere and done something.” In the case of killing a grizzly, it means you’ve done something that has been considered difficult and dangerous. And it was, when you were hunting with a spear. But anyone who has shot a high-powered rifle knows that knocking off a grizzly bear is no more than an exercise in marksmanship, like shooting an elk. The difference is, you eat the elk. Grizzly bears are not hunted for their meat. Wyoming’s hunting regulations make this clear. If you shoot what’s called a “big game animal” in Wyoming, like an elk, a deer or an antelope, you’re legally bound to bring all the edible portions of the animal out of the field. But if you shoot what’s called “a trophy animal,” like a mountain lion, a black bear and, now, a grizzly, all you have to bring out is its skull and pelt.
To see if small mammalian predators influence tick infection rates, researchers placed camera traps at dozens of sites throughout Dutchess County in the summers of 2012 and 2013. Trap visitors included coyote, fox, bobcat, fisher, raccoon, and opossum. Then the investigators surveyed and tested ticks at the camera trap sites.
Locations with high predator diversity had lower infection prevalence of nymphal ticks than sites dominated by coyotes. Numbers of nymphal ticks were lowest where forest cover was higher, and bobcats, foxes, and opossums were associated with a reduction in tick infection.
The chlorine washing of food, the controversial “cleaning” technique used by many US poultry producers who want access to the British market post-Brexit, does not remove contaminants, a new study has found. The investigation, by a team of microbiologists from Southampton University and published in the US journal mBio, found that bacilli such as listeria and salmonella remain completely active after chlorine washing. The process merely makes it impossible to culture them in the lab, giving the false impression that the chlorine washing has been effective. Apart from a few voluntary codes, the American poultry industry is unregulated compared with that in the EU, allowing for flocks to be kept in far greater densities and leading to a much higher incidence of infection. While chicken farmers in the EU manage contamination through higher welfare standards, smaller flock densities and inoculation, chlorine washing is routinely used in the US right at the end of the process, after slaughter, to clean carcasses. This latest study indicates it simply doesn’t work.
New research from the University of East Anglia has confirmed a dramatic decrease in oxygen in the Gulf of Oman part of the Arabian Sea. But the environment
New viruses had all the building blocks of the human virus, and lab exeriments found that some are equipped with the same capacity to enter human cells.
Eco Escuela : Ideas para habitar el planeta by Cabrales, Benjamin , Casadiego . El documento relata la historia de la comunidad de Belén de los Andaquíes, Caquetá, que se organizó en tiempos de guerra para defender su entorno y en menos de treinta años lograron transformar una región caracterizada por la extracción de indiscriminada de los recursos naturales, en un lugar protector del agua y los bosques amazónicos como respuesta al reto del cambio climático. Es a partir de esas historias y ese contexto regional donde se inscribe el proyecto Implementación de un Centro de Educación y Capacitación en utilización de Energías Renovables para protección y adaptación al Cambio Climático.. “Los resultados de la expedición Colombia Bio en el Parque Municipal Andakí revelaron que la estrategia de los lugareños para cuidar la Biodiversidad de Belén de los Andaquíes produce buenos resultados. En sólo 26.000 hectáreas aparecieron 47 especies nuevas para la ciencia”. Revista Semana (Edición 1850, octubre de 2017). un grupo de líderes ambientales cuentan cómo lograron salvar los bosques que rodean su municipio.. Project Gutenberg Self-Publishing – eBooks
The vision captured by Australian Customs officers in the Southern Ocean is so sensitive the Government fought for years to keep it secret, saying it could damage relations with Japan.
The Ebola epidemic in West Africa may have surprised most of the medical establishment – this is the first such outbreak in the region – but the risk had been steadily rising for at least a decade. The risk had grown so high, in fact, that this outbreak was almost inevitable and very possibly predictable.All that was needed was to see the danger was a bat’s eye view of the region. Once blanketed with forests, West Africa has been skinned alive over the last decade. Guinea’s rainforests have been reduced by 80%, while Liberia has sold logging rights to over half its forests. Within the next few years Sierra Leone is on track to be completely deforested.This matters because those forests were habitat for fruit bats, Ebola’s reservoir host. With their homes cut down around them, the bats are concentrating into the remnants of their once-abundant habitat. At the same time, mining has become big business in the region, employing thousands of workers who regularly travel into bat territory to get to the mines.