Sunday, September 26, 2010

Serão os homens mais poluidores que as mulheres?

Recentemente foram realizados estudos na Suécia com o objectivo de analizar os hábitos de consumo e de actividades diárias de homens e mulheres. Os resultados aplicados à análise da pégada ecológica de cada um, reflectem que os homens serão potencialmente os mais poluidores.


Desde hábitos de condução, actividades ligadas ao trabalho, entretenimento e actividades domésticas, são momentos que destacam as diferenças entre sexos na contribuição para o aquecimento global, sendo o estado civil de cada um dos factores influenciadores nesses mesmo hábitos.

Algumas dessas diferenças indicam os homens como os mais poluidores e maiores consumidores de energia:

1.Devido ao gosto que a maioria dos homens têm pelo mundo automóvel, são os que gastam mais horas a conduzir, emitindo grandes níveis de carbono

2.São também os homens que, no que toca à condução passam mais tempo a conduzir antes de perguntarem por indicações para chegar ao destino

3.As mulheres solteiras gastam menos energia do que os homens na mesma situação

4.Os homens consomem mais energia devido a passarem mais tempo em actividades como jogos e actividades de productividade

5.No entanto, em contradição, são os homens os que mais se preocupam com questões ambientais em comparação com as mulheres. E são as mulheres que mais energia gastam quando são as responsáveis por tarefas domésticas.

Serão estes factores conclusivos de uma maior responsabilidade pelo aquecimento global por parte dos homens? Construír uma visão repartida ou de colaboração, repartindo os hábitos responsáveis pode ser a solução. O que acham: os homens serão mesmo mais irresponsáveis na sustentabilidade?


Fonte: www.bigthink.com

Dormir no Jardim - em Coimbra

Um (pequeno) hotel sustentável instalou-se no Botânico em Coimbra. Para os que se preocupam com a sua pegada ecológica

Não é um jardim qualquer. É o maior do País, com 13 hectares de terreno, grande parte doado pelos monges beneditinos.


Situado em Coimbra desde 1772, iniciativa de Marquês de Pombal, o Jardim Botânico da Universidade de Coimbra (JBUC) é um ex-líbris da cidade dos estudantes por muitos e vários motivos.

Aos quais se acrescenta agora mais um: a possibilidade de dormir no seu interior, em pleno contacto com a natureza no Tree Hotel que acaba de se instalar na mata, precisamente "a zona mais isolada, quase uma floresta no meio da cidade", como a descreve Helena Freitas, diretora do JBUC. "Aquele era o local usado pelos monges beneditinos para terem alguma espiritualidade", conta-nos.

O Tree Hotel foi criado pelo estúdio lisboeta Dass para a última edição da Experimenta Design.

Morou, durante três meses, no Jardim da Estrela, em Lisboa, e já passou por Silves e Leiria. É um projeto experimental de arquitetura e design sustentável que questiona os processos de criação das cidades e da arquitetura e o crescimento brutal do número de habitantes nas metrópoles. Foi Nuno Janeiro, estudante finalista de arquitetura e um dos responsáveis pela promoção deste hotel de geometria irregular, que lançou o desafio ao Botânico. O local "reúne as condições perfeitas para a privacidade" dos hóspedes, diz. O hotel foi colocado no Bambuzal, ao lado de uma capela centenária.

A intenção da diretora do jardim é "promover a ideia de ecologia urbana. Do ponto de vista arquitetónico, o hotel apela à construção sustentável, em sintonia com o espaço envolvente". E quem não gostaria de ter um jardim só para si durante uma noite? Este pequeno hotel (com uma cama de casal e WC) não tem luz elétrica, mas está ligado à rede de água e esgotos. À noite, terá que acender as velas de um candelabro ou duas lanternas LED que se ligam à manivela. Outra das mais--valias é a cobertura onde poderá contemplar a natureza. Tudo sem aumentar a sua pegada ecológica.

Se a aceitação do público for positiva, a diretora do Botânico admite que o Tree possa ficar ali por tempo indeterminado. No futuro, Helena Freitas gostaria ainda de abrir um restaurante de cozinha biológica neste enorme jardim onde reina a tranquilidade.

ESTÚDIO DASS

Para desenvolver este projeto, o estúdio Dass reuniu-se com biólogos, paisagistas, empresas de construção na investigação de novos materiais. "A inspiração para a construção deste micro-hotel não é a arquitetura, mas a própria natureza", assegura o ateliê. Em julho, o Tree Hotel foi mesmo nomeado para o prémios Outros Mercadus, que destaca obras de arquitetura e design efémeras construídas no nosso país.


Reservas Tree Hotel Coimbra

treehotelcoimbra@gmail.com

Seg-Qui €50/noite

Sex-Dom €70/noite

Thursday, September 16, 2010

How to Save the Wild Tiger

Tigers, like most big cats of the world, are in retreat. In the past, tigers were found all throughout Asia, from the Caspian Sea to Siberia and Indonesia. Now they occupy only six percent of their former range. In the last decade alone, tiger-occupied area has decreased by 41 percent. Despite decades of conservation initiatives, the number of tigers in the wild is at an all-time low. According to a new study from an international team of researchers, efforts should be concentrated on a few key sites in order to save the species from extiction.

The report was produced by a team including the University of Cambridge, Wildlife Conservation Society, and others, and is published in the journal PLoS Biology. Co-author, John Robinson, said, "The tiger is facing its last stand as a species...we are confident that the world community will come together to bring these iconic big cats back from the brink of extinction."


The report encourages conservationists to focus on 42 "source sites" as the top priority for the tiger's recovery. The price tag of doing so would be an estimated $35 million more than what is currently being spent on tiger conservation per year.

Unfortunately, the situation for the tiger is dire. Their global population is less than 3,500, of which a mere 1,000 are breeding females. Certain tiger populations have completely disappeared such as those in Cambodia, China, Vietnam, and North Korea. The remaining populations are pressured by habitat loss, killing or capture for human use, and from overhunting of their own prey. A huge factor in the recent decline of tigers is the demand for tiger body parts to be used as medicine.

The 42 source sites are defined as sites that have breeding populations and have the best chance to seed the tiger's recovery over a larger area in the future. It is akin to establishing no-fishing zones in the oceans in order to increase overall fish numbers. These sites would be safe havens for a predicted 70 percent of the global tiger population. However, they must be coupled with effective law enforcement and scientific monitoring. The result may be a rapid increase in tigers over a short span of time.

India has been singled out as the most important country for tiger conservation, with 18 source sites. Sumatra (largest island of Indonesia) also has eight, and the Russian Far East has six. The cost of this new conservation attempt would be borne mostly by the host countries but with contributions from international donors and NGOs. This fall, Russia will be hosting an international "Tiger Summit" with the hope of jump-starting this new coordinated effort.

A resurgence of the tiger population would be heartening to see. A poll conducted by the channel, Animal Planet, labeled the Tiger as the world's favorite animal, even beating out the dog. If this is the case, then people will recognize their importance and the need to ensure their survival.

Source: www.een.com

Wednesday, September 8, 2010

EDP dá 850 mil lâmpadas de baixo consumo


A EDP vai lançar uma campanha de troca de lâmpadas incadescentes por lâmpadas economizadoras nos super e hipermercados da Sonae.

A EDP, em parceria com a Sonae, está a promover desde o passado sábado uma campanha de troca de lâmpadas incadescentes por lâmpadas economizadoras.


A campanha decorre de 4 de Setembro a 4 de Outubro nos supermercados e hipermercados Modelo e Continente e ainda nas lojas da EDP. por cada lâmpada incadescente a EDP dá duas eficientes.

As lâmpadas economizadoras gastam, segundo a EDP, cinco vezes menos do que as lâmpadas incandescentes e duram, em média oito vezes mais.

Fonte: www.expresso.pt

Saturday, September 4, 2010

The Earth's 6th Great Mass Extinction is Occurring as You Read This -A Galaxy Classic


"In one sense we know much less about Earth than we do about Mars. The vast majority of life forms on our planet are still undiscovered, and their significance for our own species remains unknown. This gap in our knowledge is a serious matter: we will never completely understand and preserve the living world around us at our present level of ignorance.


"If all mankind were to disappear, the world would regenerate back to the rich state of equilibrium that existed ten thousand years ago. If insects were to vanish, the environment would collapse into chaos."

Edward O. Wilson, The world's leading authority on Biodiversity, Emeritus Professor of Biology at Harvard and author of "The Creation: An Appeal to Save Life on Earth."

There is little doubt left in the minds of professional biologists that Earth is currently faced with a mounting loss of species that threatens to rival the five great mass extinctions of the geological past, the most devasting being the Third major Extinction (c. 245 mya), the Permian, where 54% of the planet's species families lost. As long ago as 1993, Harvard biologist E.O. Wilson estimated that Earth is currently losing something on the order of 30,000 species per year -- which breaks down to the even more daunting statistic of some three species per hour. Some biologists have begun to feel that this biodiversity crisis -- this "Sixth Extinction" -- is even more severe, and more imminent, than Wilson had supposed.

.../...

It is a radical vision to many people, and the Wildlands Project expects that it will take at least 100 years to complete. Even so, projects like this, on a worldwide basis, may be humanity’s best chance of saving what’s left of the planets eco-system, and the human race along with it.

Please read the full arcticle at : The Earth's 6th Great Mass Extinction

150 mil cabras vão ajudar a combater incêndios


A partir do próximo ano, a prevenção de incêndios florestais vai ter um novo aliado: o gado caprino.


Trata-se de um projecto levado a cabo pelo Agrupamento Europeu de Cooperação Territorial Douro-Duero para ser implementado nos distritos de Bragança e Guarda, do lado português e nas províncias de Zamora e Salamanca, do lado espanhol.

Chama-se “Self-Prevention” e consiste em introduzir 150 mil cabeças de gado caprino nesta região para que actuem como “limpadores naturais” dos campos agrícolas abandonados e dos montes, deixando livres de vegetação zonas de potencial perigo de incêndio.

“Pretendem que sejam 150 mil que vão pastorear nesta região. O gado caprino vai aonde o homem não chega e limpam tudo por onde passam”, explica Jorge Gomes, o governador civil de Bragança, que apoia o projecto. O governador salienta a importância desta iniciativa para a prevenção dos fogos florestais.

“Para além da vertente de prevenção dos incêndios, está em causa um projecto de grande dimensão, de desenvolvimento económico, de combate à desertificação, que vai criar riqueza, postos de trabalho e novas infraestruturas industriais.”

Está prevista a criação de uma empresa que ficará responsável pela distribuição dos efectivos caprinos e pela criação de equipamentos que sustentem a rentabilidade económica do projecto.

É o caso de 12 queijarias, 15 lojas de comercialização de produtos e dois matadouros.

Serviços que vão criar 558 postos de trabalho.

“Na criação dos cabritos, nas queijarias, nas lojas de apoio, enfim. São em infraestruturas que têm de ser edificadas nos quatro distritos.”

O projecto vai começar a ser implementado no próximo ano e está orçado em 48 milhões de euros.

Fonte: http://www.brigantia.pt/

Mass Extinction Threat: Earth on Verge of Huge Reset Button?


Article by: Jeremy Hsu

LiveScience Senior Writer

Mass extinctions have served as huge reset buttons that dramatically changed the diversity of species found in oceans all over the world, according to a comprehensive study of fossil records. The findings suggest humans will live in a very different future if they drive animals to extinction, because the loss of each species can alter entire ecosystems.

Some scientists have speculated that effects of humans - from hunting to climate change - are fueling another great mass extinction. A few go so far as to say we are entering a new geologic epoch, leaving the 10,000-year-old Holocene Epoch behind and entering the Anthropocene Epoch , marked by major changes to global temperatures and ocean chemistry, increased sediment erosion, and changes in biology that range from altered flowering times to shifts in migration patterns of birds and mammals and potential die-offs of tiny organisms that support the entire marine food chain.

Scientists had once thought species diversity could help buffer a group of animals from such die-offs, either keeping them from heading toward extinction or helping them to bounce back. But having many diverse species also proved no guarantee of future success for any one group of animals, given that mass extinctions more or less wiped the slate clean, according to studies such as the latest one.

Then and now

Looking back in time, the diversity of large taxonomic groups (which include lots of species), such as snails or corals, mostly hovered around a certain equilibrium point that represented a diversity limit of species' numbers. But that diversity limit also appears to have changed spontaneously throughout Earth's history about every 200 million years.

How today's extinction crisis - species today go extinct at a rate that may range from 10 to 100 times the so-called background extinction rate - may change the face of the planet and its species goes beyond what humans can predict, the researchers say.

"The main implication is that we're really rolling the dice," said John Alroy, a paleobiologist at Macquarie University in Sydney, Australia. "We don't know which groups will suffer the most, which groups will rebound the most quickly, or which ones will end up with higher or lower long-term equilibrium diversity levels."

What seems certain is that the fate of each animal group will differ greatly, Alroy said.

His analysis, detailed in the Sept. 3 issue of the journal Science, is based on almost 100,000 fossil collections in the Paleobiology Database (PaleoDB).

The findings revealed various examples of diversity shifts, including one that took place in a group of ocean bottom-dwelling bivalves called brachiopods, which are similar to clams and oysters. They dominated the Paleozoic era from 540 million to 250 million years ago, and branched out into new species during two huge adaptive spurts of growth in diversity - each time followed by a big crash.

The brachiopods then reached a low, but steady, equilibrium over the past 250 million years in which there wasn't a surge or a crash in species' numbers, and still live on today as a rare group of marine animals.

Counting creatures better

In the past, researchers have typically counted species in the fossil record by randomly drawing a set number of samples from each time period - a method that can leave out less common species. In fact two studies using the PaleoDB used this approach.

Instead, Alroy used a new approach called shareholder sampling, in which he tracked how frequently certain groups appeared in the fossil record, and then counted enough samples until he hit a target number representative of the proportion for each group.

"In some sense the older methods are a little like the American voting system - the first-past-the-post-winner method basically makes minority views invisible," said Charles Marshall, a paleontologist at the University of California, Berkeley, who did not take part in the study. "However, with proportional systems, minority views still get seats in parliament."

Marshall added that the study was the "most thorough quantitative analysis to date using global marine data ." But he added that researchers will probably debate whether the PaleoDB data represents a complete-enough picture of the fossil record.

Nothing lasts forever

The idea that rules of diversity change should not come as a surprise for most researchers, according to Marshall.

"To me, the really interesting possibility is that some groups might not yet be close enough to their caps to have those caps be manifest yet," Marshall told LiveScience. Or "evolutionary innovation" might happen so quickly that new groups emerged to increase overall diversity, even if each sub-group reached a cap on diversity.

If anything, the record of past extinctions has shown the difficulty of predicting which groups win out in the long run. "Surviving is one thing and recovering is another," said Marshall, who wrote a Perspectives piece about the study in the same issue of Science.

One of the few consistent patterns is that growth spurts in diversity can apparently happen at any time, according to Alroy. He added that the background extinction of individual species has also remained consistent - the average species lasts just a few million years.

Of course, the ongoing extinction crisis of modern times goes far beyond the background extinction rate. Alroy noted that it could not only wipe out entire branches of evolutionary history, but may also change the ecosystems shaped by each species.

That means today's species matter for environments around the world, and so humans can't simply expect replacements from the diverse species of the future.

"If we lose all the reef builders, we may not get back the physical reefs for millions of years no matter how fast we get back all the species diversity in a simple sense," Alroy said.

Friday, September 3, 2010

How Green Is Golf?


By John Barton



Illustration By Christoph Niemann


In January 1995, 81 people got together in a conference room at Pebble Beach for three days to discuss what could be done to make golf more eco-friendly. Present were representatives from all the major golfing bodies, and all the leading national and local environmental groups, too. There had never been such a meeting before. "It was really difficult getting some people to come," recalls Paul Parker, executive vice president of the Center for Resource Management, which orchestrated the meeting. "Particularly from the golf-community side, there was a lot of suspicion about who these environmental people were, and why they kept criticizing golf. They felt that the environmentalists didn't understand the game and had not made much of an effort to understand it. They saw these guys as the enemy."

"We really expected an explosive atmosphere," says Ted Horton, who at the time was vice president of resource management for Pebble Beach, with responsibility for the whole property, including all the golf courses and 17 Mile Drive. "I had the job of welcoming the group on that first morning. My heart was in my throat. I thought, We could have some real fireworks here."

But the attendees talked. And talked. And today, 15 years later, after five national conferences and dozens of smaller meetings and workshops, they're still talking. Improvements have been made, reports, guidebooks and educational videos have been published, and the effort -- which has become known as the Golf & the Environment Initiative -- has allowed the game to claim that it's cleaning up its act.

Wait, you say, hasn't golf always been green? Golf courses have trees and grass, critters; all kinds of nature and stuff, right? What's not to like? Better than a strip mall or a parking lot, surely. Yes, yes, of course. But the fact is that before the 1995 meeting, there were serious issues surrounding golf and its impact on the environment. And -- despite much self-congratulatory hyperbole from the golf industry about environmental sensitivity, sustainability and stewardship, and the obligatory eco-claims of every new golf resort -- there are still plenty of serious problems today. There are issues about where golf courses are built, about how they're built, and especially about how they're maintained. Golf could do more. As Parker says: "There's a terrific opportunity for golf and golf courses to demonstrate real environmental leadership. The attitude generally is, yeah, we need to do some things to avoid getting criticized. That's where the vision ends."

To find out more about these issues, and how serious they are, and what's being done about them, I interviewed a variety of the leading thinkers who reside at the intersection of golf and the environment: a golf-course architect, an anti-pesticide activist, an organic golf-course superintendent, a government regulator, a golf-course inspector, a turfgrass expert, an environmentalist. We talked about golf, where it has been and where it's headed. The conversations were long and at times contradictory, complicated and confusing. We spoke of water tables, endocrine function, genetically engineered grass. Salamanders. The American chestnut. President Bush. From the many hours of transcribed tapes, plus plenty of other conversations, visits to obscure corners of various libraries, and late-night sessions with Google, here are some of my conclusions about golf and the environment:

GOLF IN AMERICA WILL FACE A CRISIS OVER WATER.

There simply won't be enough to go around for golf courses to continue to do what they've been doing (one report says U.S. courses each use on average 300,000 gallons a day). Water is going to have to be increasingly carefully managed by everyone -- some have even described it as "the new oil." By 2025, according to the United Nations Environmental Programme's 2007 report, about 1.8 billion people in the world will be living in conditions of absolute water scarcity, and two-thirds of the planet will be subject to water stress. In America, demand for water grows while global warming has meant shrinking glaciers and mountain snow levels (and thus less snowmelt to fill our streams and rivers and reservoirs), more evaporation of freshwater reserves and lower rainfall in some areas and even unexpected droughts (not to mention rising sea levels threatening some coastal courses -- see page 207). There will be increasing financial and regulatory pressures on golf courses' use of water, especially in high-population desert areas where shortages are acute, such as Las Vegas, one of the fastest growing cities in America (the population has tripled to 1.7 million in the last 20 years, and by one estimate that figure might double by 2015). Recently the U.S. Geological Survey announced that demands on the aquifer beneath the Coachella Valley in California -- including from 126 area golf courses -- are so great that in the past nine years, large parts of the valley have sunk more than a foot.

In the short term, golf has already proved to be innovative in adapting to the challenge of conserving water. Some golf courses are using treated effluent water or wastewater instead of drinkable water, irrigating smaller areas of the property, irrigating more efficiently and with better equipment, raising mowing heights, and using new strains of grass that require dramatically less water. All of these things will continue. New courses in the desert will become rarer. The practice of overseeding fairways in the South with cool-season grasses in the winter will become harder to justify, and less common. A lot of golf courses might disappear.

THE PESTICIDES THAT GOLF COURSES USE, AND THE ONES THAT PEOPLE THROW ON THEIR LAWNS, PERHAPS ARE NOT AS SAFE AS WE BLITHELY ASSUME THEM TO BE.

To coin a phrase, there are known knowns when it comes to pesticides, but there are also an awful lot of unknown unknowns. Even if the superintendents at every one of America's 16,000 courses are rigorous in applying pesticides sparingly and with extreme caution -- and given the pressure they're often under to deliver unblemished, Augusta-like grass year-round, that's unlikely -- can we be sure these chemicals aren't harmful? There are many unanswered questions. Why are various diseases like autism, asthma and all kinds of cancers on the rise? Why are Western men and women increasingly infertile? Why did my friend's girlfriend's dog get tongue cancer and die? It's not unreasonable to think that exposure to synthetic chemicals -- some of whose residues are found in high concentrations as far away as the Arctic -- are to blame. There's a reason that, for instance, Connecticut recently banned pesticides from all school grounds (grades K through 8), and why more than 30 states have some kind of pesticide restriction on school property. There's a reason golf-course superintendents dress like Power Rangers when they spray the golf course. There's a reason the organic movement is growing.

ENVIRONMENTALISM ISN'T GOING AWAY.

As global warming increases, and common sense prevails, and the leaders of commerce and industry realize there's a buck to be made by being green-minded (or, more often, pretending to be), environmentalism is going to have large, growing and profound effects on all of our lives. What does this mean for golf? Like the fur coat and the SUV, the "Augusta look" -- freakishly green wall-to-wall grass on a life-support system of too much water and toxic chemicals, greens running at virtually unplayable speeds, ornamental flowers all over the place -- will become less admired, and even stigmatized. It works for the Masters, but that's just one week a year at an extremely wealthy private club that gets very little play (there are only 300 members, and the course is closed all summer). It doesn't work -- and isn't desirable -- at most other places. The aspiration -- obsession -- to be like Augusta has probably always had less to do with the needs and wants of golfers, who know that the game is all about taking the rough with the smooth, and more to do with the egos of golf-course owners, tournament directors and people who sit on greens committees.

As water becomes scarcer, as organic-management practices increase, as environmentalism and environmental legislation start to bite more than they have, as the economy struggles, and as we come to appreciate the aesthetics of golf courses in all their many natural, beautiful hues, the way the game looks will change. And the way it plays will change too, with firmer and faster turf demanding a return to shotmaking, creativity, the bump-and-run. It's starting to happen already: The hot courses are not dutiful apostles of Augusta; they are unique, wild and woolly-looking layouts like Bandon Dunes, Sand Hills, Chambers Bay. Americans increasingly love to visit the rugged, natural links of the British Isles, where the game began. That's where we're headed: back to the future.



Source: http://www.golfdigest.com/magazine

Wednesday, September 1, 2010

Incêndios equivalem a mais 50.000 carros na estrada



Os incêndios deste Verão, que já provocaram a perda de mais de 95.000 hectares, levaram a uma diminuição importante de capacidade de sequestro de dióxido de carbono da floresta nacional, que a empresa OFF7 estima em mais de 100.000 toneladas por ano, o mesmo montante emitido por aproximadamente 50.000 veículos ligeiros em igual período. A área florestal portuguesa tem um papel importante no cumprimento dos objectivos do Protocolo de Quioto, uma vez que as árvores sequestram, ou retiram da atmosfera, dióxido de carbono da atmosfera ao longa da sua vida útil.


Catarina Veiga, responsável pela quantificação de emissões na OFF7, refere que "a perda de capacidade anual de sequestro representa mais do dobro das emissões directas provocadas pela queima das árvores" (que, segundo dados do Instituto Meteorológico, são de cerca de 50.000 toneladas de CO2). A responsável refere ainda que "a reposição desta capacidade de sequestro pode demorar décadas, uma vez que mesmo que a reflorestação seja imediata as árvores precisam de largos anos até atingirem a sua capacidade plena de absorção de CO2".

Os objectivos traçados por Portugal para o Protocolo de Quioto levam em consideração alguma perda de capacidade de sequestro provocada pelos incêndios florestais, mas anos particularmente maus como o actual ou como 2003 e 2005 (em que arderam, respectivamente, mais de 135.000 e 125.000 hectares de floresta) ficam de fora, dificultando o cumprimento dos objectivos definidos.


Sobre a off7

A off7 é uma empresa nacional, criada com o objectivo de contribuir para que Portugal caminhe rapidamente para uma economia de baixo carbono. Pretende mostrar que reduzir emissões de carbono é, mais que uma necessidade, uma oportunidade para reduzir custos energéticos, desenvolver tecnologia inovadora e comunicar uma imagem mais verde ao mercado. Foi recentemente considerada pela Carbon Catalog como uma das 10 melhores empresas do mundo nesta área.

Mais informações em http://www.off7.pt/