Princípios da Agroecologia

Agricultura sustentável tem que considerar aspectos socioeconômicos e culturais dos grupos sociais implicados. Não basta proteger e melhorar o solo ou a produtividade agrícola se não resulta em melhorias nas condições de vida das pessoas envolvidas. Portanto, agricultura sustentável é um conceito que implica aspectos políticos e ideológicos que tem a ver com o conceito de cidadania e libertação dos esquemas de dominação impostos por setores de nossa própria sociedade e por interesses econômicos de grandes grupos, de modo que não se pode abordar o tema reduzindo outra vez as questões técnicas.

Francisco Roberto Caporal


"Muita gente pequena, em muitos lugares pequenos, fazendo coisas pequenas, mudarão a face da Terra". provérbio africano

Como os lobos mudam rios

Como se processa os animais que comemos

Rio Banabuiu


sábado, 10 de novembro de 2012

O Profissional de Ciências Naturais

The Work of the Wildlife Professional

Musk deer are poached for their musk, which is used in perfumes as well as in traditional medicine. (Credit: Maksim/Wikipedia)
Every day TWS members protect and manage wildlife species and their habitats, and make significant contributions to wildlife management and conservation. On the first day of sessions at the 19th Annual Conference in Portland, OR, I had the opportunity to sit in on a number of sessions as well as chat with TWS members during our coffee breaks. Here’s what I learned:
Orus Ilyas with the Department of Wildlife Services at India’s Aligarh Muslim University studies the conservation status and habitat use of musk deer. Asia is home to a number of species of musk deer, all of which are in decline. One of the threats facing these species is poaching: Musk deer are killed for their musk pods — glands that produce musk, which is used in perfumes. In 2011, Smithsonian reported that musk gatherers can get about $200 to $250 per gland from foreign traders.  As part of her research, Ilyas is studying the conservation status and feeding ecology of Alpine musk deer in the Indian Himalayan region. The Alpine musk deer is listed as endangered on the IUCN Red List.
To Ed Arnett, Director of Science and Policy Director at Bat Conservation International, roost management is critical to bat conservation. “If you don’t have roost sites for bats, you won’t have bats,” he says. At a symposium on wildlife in managed forests, Arnett talked about managing bats in intensively managed forest landscapes. According to Arnett, it’s important to remove clutter in forests that would otherwise impact a bat’s ability to maneuver through sites. Further, apart from snags and trees, bats — primarily the long-eared myotis — are also drawn to stumps and down logs that serve as day roosts.  “Managing for multiple roosts is especially critical,” Arnett says.
A fisher is caught on camera while it tries to take bait. Fishers have a diverse diet, which includes reptiles, squirrels, and porcupines. (Credit: USFWS)
Also at that symposium, Roger Powell, Professor Emeritus at North Carolina State University’s Department of Biology, talked about fisher populations on managed landscapes in northern California. On a side note, fishers — members of the weasel family — aren’t afraid to take on porcupines, which we all know use their spiked coat to protect themselves from predators. That’s why, when a fisher goes after a porcupine, it goes for its face. This can take 30 to 45 minutes as the fisher circles its victim biting its unprotected face as often as it can. Eventually blood loss and shock kill the porcupine. The fisher then turns it over and feeds on it. Fisher numbers were in decline since as early as the 1920s due to a number of factors, including trapping and habitat loss. Over the years, fishers have been reintroduced in a number of locations across North America. In 2011, biologists released fishers in the northern Sierra Nevada, and Powell along with his research team have been monitoring the translocated fishers’ survival and productivity.

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Assine o Abaixo-Assinado virtual que pede o banimento dos agrotóxicos já proibidos em outros países do mundo e que circulam livremente no Brasil.

A Campanha tem o objetivo de alertar a população sobre os perigos dos agrotóxicos, pressionar governos e propor um modelo de agricultura saudável para todas e todos, baseado na agroecologia.

Assine já, pelo banimento dos banidos! Entre no link abaixo.