Archive for the 'global warming' Category

It’s whack, yo!

Livescience.com has a very good article about 8 Signs the Animal Kingdom is Out of Whack.

I’m posting the article below…

1. Earlier Migration: Several bird species are making their annual northward jaunt slightly ahead of schedule in recent springs, as the East Coast of the United States heats up, according to a study detailed in the June issue of the journal Global Change Biology. The report confirms similar studies dating back to 2006. Early birds may not sound like a huge deal, but scientists warn that long-distance migrators who start out in South America, and therefore lack cues about the timing of spring in Northern Hemisphere destinations, will be less able to keep pace with the changing climate. “Trees and shrubs are further along in their development, and different groups of insects are out,” said lead author Abraham Miller-Rushing of Boston University. “Spring is coming earlier for most other plants and animals, but not for the long-distance migratory birds. Thus, these long-distance migrant birds may need to learn to eat different sources of food or face other challenges because of the changes in timing.”

2: Jellyfish Rule: An outbreak of jellyfish in oceans across the planet has resulted from the stinging creatures hitching rides on ships that circumnavigate the globe. In fact, studies suggest that almost a quarter of all marine species in international harbors are alien transplants, thanks to human-assisted dispersal.

3: Food Web Contaminated. Scientists said last month that they found toxic pollutants in nine deep-sea species of cephalopods, a class of mollusks that includes octopuses, squid, cuttlefish and nautiluses. Among the contaminants were at least two banned in the United States in the 1970s: dichloro-diphenyl-trichloroethane (DDT) and polychlorinated biphenyls (PCBs). Scientists say it’s further evidence that contaminants make their way deep into the marine food web.

4. Heading for the Hills: Thirty species of reptiles and amphibians have fled uphill to cooler climes as global warming has caused the mercury to rise. We could see a rash of extinctions occurring between 2050 and 2100, scientists say, because higher ground will eventually run out.

5. Penguins in Peril: A rapid population decline among penguins because, in addition to a warming planet, they face the triple whammy of oil pollution, depletion of fisheries and aggressive coastline development. “Penguins are among those species that show us that we are making fundamental changes to our world,” said Dee Boersma, a University of Washington biology professor who has studied the flightless birds for more than 25 years. “The fate of all species is to go extinct, but there are some species that go extinct before their time and we are facing that possibility with some penguins.

6. Sea-Life Shift: Scientists see a notable shift in the composition of coastal marine animal communities, caused in part by changing ocean temperatures, from vertebrates (fish) to invertebrates (lobsters, squid, and crabs), as well as from bottom-feeders to species that feed higher in the water column. Meanwhile, warm-water species have superseded larger, cool-water species in population size.

7. Migrating Parasite: The parasite Angiostronglyus vasorum, commonly known as “French heartworm,” is migrating northward because of rising temperatures. Normally found in southwestern England, the parasite has been detected in dogs admitted to animal hospitals in Scotland. Climbing temperatures in the country have also resulted in a sudden proliferation of slugs and snails.

8. Food Shortages: Plant-loving animals in extremely seasonal environments such as the Arctic struggle to feed themselves because global warming causes their food supply to peak in availability before they can reach breeding grounds. “Think of it like this,” said Eric Post, a biologist at Penn State. “You’ve been out on the town with friends, and on the way home you want to stop off for a bite to eat, but the restaurant you’ve always gone to has closed early. So you try for one around the corner that’s always open a little longer. But when you get to that one, it too is closed. For herbivores, the fact that there are several ‘restaurants’ — their food patches — dispersed across the landscape isn’t useful if they all begin closing at the same time in addition to closing earlier in the season.”

What do you guys think?  Are we totally screwed?  Is it too late?  …How many more days til George W is out of the White House?

CONGRESS, ACT NOW!!

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Happy feet no more

This is sad news:  in Brazil, hundreds of baby penguins are washing up dead on the shores of Brazil’s beaches.

The culprit?  It’s unclear but many speculate it’s either due to:  1.   overfishing, which causes penguins to fish closer to shore and get caught in swift current; or 2.  pollution, the Campos oil field (off the shores of Brazil) and other pollutants are weakening penguins’ immune systems.

It’s pretty sad to see so many plant and animal species being so detrimentally impacted by our environment.  Honeybees, polar bears, penguins and more… what next?

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What have you really done about climate change? Huh?

uncle-sam.jpgToday Al Gore gave a powerful speech calling for, as the New York Times put it:

the United States to wean the nation from its entire electricity grid to carbon-free energy within 10 years, warning that drastic steps were needed to avoid a global economic and ecological cataclysm       

Gore said, “I see my role as enlarging the political space in which Senator Obama or Senator McCain can confront this issue as president next year.” As I see it, I see this as an admission that climate change is at heart a political problem, because it’s the only way we solve these problems at scale. And our leaders are conflicted. And weak. And because of that nothing is happening, all the while Rome is burning. So my question to everyone is this: What have you really done about global warming? Did you write or visit your congressperson? Have you organized others to do so? Did you join a environmental lobby like the NRDC Action Fund? Because if you haven’t and you’re just driving a Prius and using a few less shopping bags, you’re probably not doing enough. Let’s get going, everyone! 

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RED ALERT! RED ALERT!

coral.jpgHey there, it’s me sounding the environmental alarm bells.  Yesterday, a distressing article was posted online about the declining coral population.

So what’s the big deal, you might ask?  Well, did you know…

  1. 25 percent of all marine species need coral reefs to live and grow.
  2. 40 percent of fish caught commercially use reefs to breed.
  3. They have medicinal value!  Some produce compounds active against many common health problems, such as astham, heart disease, and leukemia.
  4. Coral reefs provide economic benefits via tourism.

So these tropical rainforests are pretty important… and in the US only, almost 50% of all coral reefs are in poor or fair condition, due to rising ocean temperatures, coastal development, land based pollution (e.g. sewage) and overfishing.Sadly, I read that worldwide,

  • 20% of the world’s coral reefs have been effectively destroyed and show no immediate prospects of recovery.
  • 24% of the world’s reefs are under imminent risk of collapse through human pressures; and a further 26% are under a longer term threat of collapse. [Source]

If there are any silver linings here, I would point to the growing mass of scientific documentation, and increased awareness from the population at large - hopefully this will spawn an uptick in efforts to save our coral reefs.  If you want to get into the action, check out this very excellent list on 25 things you can do to help.

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What’s the tipping point to our boiling point?

I read an article recently which stated that scientists recently discovered that a huge global warming event took place about 635 million years ago. It was caused by the sudden release of methane into the atmosphere, a gas which is about 30 times more potent than carbon dioxide in terms of its global warming capabilities. 635 millions years ago, this release led a cold, stable climate to suddenly become a warm, stable climate, with little time in between the two states.

Scientists are now looking for the trigger or tipping point which caused this to occur. It’s important since the current global warming trend may have a tipping point as well. For example, with current warming trends, are we near the tipping point at which melting ice will cause an increase in the rate polar ice caps are melting, resulting in huge amounts of greenhouse gases being released in the air? If there is methane and other large amounts of trapped greenhouse gases in the Arctic permafrost and ice caps, reaching this tipping point may cause the planet to warm up by tens of degrees.

I won’t go into the details of what an ugly situation this will be if it happens, but I will tell you this is one heck of a scary thought. Even for those who don’t believe in global warming, it’s like playing Russian Roulette to me. Do you really want to take the “small” chance the chamber you’re betting on isn’t loaded? If you can avoid the risk in the first place, why not I say!

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