Ocean BioInvasion

 January 2016. Potential invasive species identified in S. Gulf of Mexico.

November 2015. Marine invasive species benefiting from rising carbon dioxide levels Territories changing due to ocean acidification.

March 2013. Invasive species: Understanding the threat before it’s too late.

7 Sep 2011. Giant Crabs invade Antarctica. New Scientist (original source Proceedings of the Royal Society)

More than a million large 3-foot wide crabs have invaded deep Antarctic waters after the water warmed up enough for them to survive.  They’ve wiped out the local wildlife (sea urchins, sea lilies, sea cucumbers, starfish and brittle stars ) and now threaten to ruin ecosystems that have evolved over 14 million years.   The only way to make them go away is to stop global warming, says Craig Smith of the University of Hawaii at Manoa, who discovered the scarlet invaders.

Molnar, Jennifer, et. al. 2008. Assessing the global threat of invasive species to marine biodiversity  Frontiers in Ecology 6(9): 485-492.

Invasive species have transformed marine habitats around the world. The most harmful of these invaders displace native species, change community structure and food webs, and alter fundamental processes, such as nutrient cycling and sedimentation. Alien invasives have damaged economies by diminishing fisheries, fouling ships’ hulls, and clogging intake pipes. Some can even directly impact human health by causing disease

6 Jun 2012. Dock found in Oregon is debris from Japan.

A 165 ton dock (70-feet-long, 19 feet wide, 7 fet high) landed on Agate beach in Oregon near Newport. It originally came from a fishing port 5,000 miles away in northern Japan, torn loose by last year’s tsunami.

A starfish native to Japan was among the marine life still clinging to the structure. John Chapman, a research scientist at Oregon State University’s Hatfield Marine Science Center, said hundreds of millions of other organisms also hitchhiked across the ocean on the dock — some of which are invasive species never before seen on this part of the West Coast. Among the organisms are a species of tiny crab that has run wild on the East Coast but not on the West, and a kind of algae that has hit southern California but not Oregon.

“This is a very clear threat,” he said. “It’s exactly like saying you threw a bowling ball into a China shop. It’s going to break something.”

Sen. Ron Wyden, D-Ore., called on the National Oceanic and Atmospheric Administration to redouble its efforts to track the debris, saying something as big as the dock could pose a danger to ships at sea.

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How and Why Corporate Interests Attack Science. A Detailed Account of the Attack on the Hockey Stick graph

A Book review of:

Bradley, Raymond. S.  2011.  Global Warming and Political Intimidation.  How Politicians Cracked Down on Scientists as the Earth Heated up.  University of Massachusetts Press.

I would read Oreskes’ “Merchants of Doubt. How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming” first for an overview of how commercial interests manipulate the political process to prevent regulation and receive outrageous amounts of public money.

Then I’d read this book to learn the specifics of the attack.  This book also has an easy-to-understand explanation of the research that led them to their conclusions (about the hockey stick graph, made famous by Al Gore’s movie “An Inconvenient Truth”), and why the attacks of other scientists were bogus and not published by good peer-reviewed journals.

The details of the right-wing attack on science in this book make you really feel the pain and suffering inflicted on scientists like Bradley.  Fighting the attack takes up so much of their time they can’t continue to do research, no doubt another reason to go after them.

The main reason the “hockey stick” teams research was attacked was to reduce the credibility of the 2007 IPCC report.

It’s hard to know whether to laugh or cry when politicians bought by special interests, such as Senator Inhofe, invite a science fiction writer to testify about climate change.  Michal Crichton has a background in medicine, and as Bradley puts it “I really don’t follow the logic.  If I had a medical problem, I wouldn’t want to be treated by a climatologist.  So what possesses a doctor (an M.D., that is) to feel qualified to sound off about climate science is beyond me.  As a fully paid-up climatologist of many years’ standing, I know there is an immense amount about climate science that I don’t know.  The idea of weighing in on an entirely different field strikes me as presumptuous at best and foolish at worst”.

Yet Bradley falls prey to the same problem when he hopes that green technology will save us from burning fossil fuels – this simply isn’t a solution.  The best books to understand why fossil fuels are not replaceable are Hayden’s “Solar Fraud. Why Solar Energy Won’t Run the World” and Trainer’s “Renewable Energy Cannot Sustain a Consumer Society”.

Some of the scary rate-of-change statistics in the book:

  • Climate hasn’t changed this much in at least the last 850,000 years
  • When we burn fossil fuels like coal and oil, we’re releasing carbon dioxide thousands of times faster than it took to form coal and oil deposits.
  • Carbon dioxide levels have risen 40% in just the past 250 years
  • Never have greenhouse gases tripled within a few centuries, and we’re destroying the plants that could help to sequester CO2.

One of the most important concepts to understand is that it’s the rate of change that’s especially frightening about climate change.  If change is slow, then plants and animals can gradually move elsewhere and develop new adaptations to cope with the changes. Bradley has a good analogy of why the rate of change is so important. “If you trip and fall down, you won’t hurt yourself too badly; your system is capable of handling the speed at which you hit the ground.  But if you fall from a ten-story building, there’s likely to be a different result.  Your system is not adapted to deal with the much faster rate of descent in the second case.  In the same way, all systems have evolved to cope with the normal variability in existing environmental conditions.”

Bradley asks whether this rate of change really matters.  Planet earth will survive, he says, but it may become uninhabitable.  Not just from climate change, but from how much humans have altered the earth’s surface through agriculture, roads, vegetation destruction, damaging and diverting water, etc. — which will make it even harder for life to adapt to climate change.

The book is full of easy to understand explanations, which the public desperately needs, not all scientists are good at conveying what they do.  For example, here’s Bradley’s explanation of the difference between weather and climate:

“The energy that the earth receives from the sun is not distributed equally.  Because the earth is a sphere that rotates on its axis as it revolves around the sun, more energy is received near the Equator and in the tropics than at higher latitudes, and more is received (in each hemisphere) during summer months than in winter months.  These factors are what cause the atmosphere and the oceans to circulate, redistributing the energy around the globe.  Continents and mountain ranges get in the way, forcing ocean currents to carry warm (or cold) water to places where they might not otherwise go, and causing the atmosphere to swerve far to the north or south as it sweeps across the globe.  The immediate consequences of these processes are what we think of as weather—the daily and seasonal variations in temperature, rainfall, humidity, cloudiness, and so on that characterize each region.  But over time, the same kinds of weather events tend to recur within each region—of course, a bit mixed up from one year to the next.  This general repetition, season to season, year to year, gives each place its distinct “climate”.

In the future, temperatures will rise over the entire planet. Rainfall is harder to predict, but it will be altered too.  In general, high-latitude regions will get wetter, and subtropical and lower latitude will become drier – regions that now produce enormous amounts of food.

[my comment: I really don’t understand how anyone could deny that humans are causing carbon dioxide to increase.  Coal and oil are ancient plants full of carbon dioxide laid down 330 million years ago.  Billions of people are burning fossil fuels, releasing their carbon dioxide (and other pollutants).  Why would that not have an effect?  Alice Friedemann, energyskeptic]

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Termites, air pollution, and ozone depletion

Excerpts from the book below.  Ozone depletion is also one of the 9 boundaries we must not cross.

Klein, Hilary Dole, and Adrian M. Wenner 2001. Tiny Game Hunting: Environmentally Healthy Ways to Trap and Kill the Pests in Your House and Garden,  University of California Press.

If you suspect a termite colony is in the ground near your house (wood in the woodpile, tree stumps, or fence posts show signs of being eaten), get out a shovel and start digging. You can’t totally expose a very large colony, but you can create access to it for ants and other termite enemies.

People commonly buy and sell at least one or two homes during their lifetime, and renters move even more frequently; but little information is kept on the pesticide-use history of a dwelling. How are you to know, when you move into a house, that it has been treated with gallons of chlordane, not once, but over and over again?

When a house is tented and fumigated, methyl bromide or sulfuryl fluoride (Vikane) is pumped into it. These are among the most toxic and hazardous pesticides used today, a dangerous source of pesticidal air pollution that may result in unsafe exposures for people living nearby. Moreover, a United Nations scientific panel estimated that methyl bromide is responsible for from 5 to 10 percent of ozone depletion worldwide. In 1995, almost 600,000 pounds of this chemical were injected into thousands of California homes and businesses. Furthermore, according to Californians for Pesticide Reform, methyl bromide levels outside homes under fumigation may exceed the California safety standard sevenfold. And methyl bromide can be detected inside other closed houses up to 100 feet away from a fumigated structure. Passersby beware! Hazardous vapors drifting through empty pipes into neighboring houses have killed a number of people.

Used much more frequently than methyl bromide, Vikane is an extremely toxic nerve poison. Researchers have found that it can be absorbed by many household materials and released for up to forty days after fumigation.

Fumigation only kills the termites in the house and does not affect underground nests. Houses can be reinfested immediately afterward, although evidence that a colony exists then may take a few years to show up. And often after pesticides are used, people do not attend to the important tasks of monitoring and detection.

People twenty years ago might be forgiven for using hazardous substances to “save” their homes. But today a variety of nontoxic treatments for termites are available. Call around to locate exterminators who use them and give them your business. The more we demand safe treatments that will not poison our water and air, the more operators will begin to use those treatments.

Traditionally, the treatment for subterranean termites has been to inject insecticides into the soil around and beneath houses. Chlorinated hydrocarbons such as chlordane were used routinely for termites (and ants) in millions of homes. A known carcinogen, chlordane remains active for twenty-five years. It is no longer on the market, but its use (and overuse) may be one of the twentieth century’s great pesticide disasters.Pages 94-95

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Air Pollution effects on conifers in California

Below is an excerpt on how air pollution in California affects nearby forests from the book:

Johnston, Verna R.  1994. California Forests and Woodlands: A Natural History.  University of California Press.

It was in the Mixed Conifer Forests of the San Bernardino Mountains east of Los Angeles that air pollution damage to Pacific Ponderosa Pines first became recognized in the early 1960s. For nearly a decade a mysterious blight known as “Disease X” had been turning the needles of mature Ponderosas a mottled yellow before destroying the trees. No one guessed, at that time, that the smog from the Los Angeles Basin 60 miles away could be the killer.

As trees died by the thousands, Paul Miller and colleagues traced the lethal agent to its source. The brown smog that blankets Los Angeles comes largely from millions of automobiles. When hydrocarbons and nitrogen oxides from car exhausts combine in sunshine, one of their major products is ozone (O3 ). An invisible, eye-stinging, caustic gas, ozone can crack rubber, deteriorate fabrics, scar lungs, and cause coughing, shortness of breath, pain, and fatigue. And, it kills trees!

Ozone, along with all the other air pollutants generated in Los Angeles, ordinarily remains trapped there during much of the day by inversion layers of warm air over the mountains rimming the basin. When afternoon offshore breezes blow the smog-laden air upslope into the mountains, ridges in direct line with the air currents suffer devastating tree losses.

Ozone acts quickly. Ponderosa Pines usually keep their needles 3 to 4 years. Ozone-struck trees shed all but the current crop, leaving a sparse, stripped tree. The remaining needles soon show yellow mottling as ozone destroys the chlorophyll. As the needles fall, the root system deteriorates and resin flow in the trunks slows down, opening the way for bark beetles.

Fortunately, not all kinds of trees succumb in the same degree and, even among the most sensitive Ponderosa and Jeffrey Pines, some specimens show an inborn resistance. Sugar Pine, luckily, seems relatively immune. But the list of vulnerable conifers grows with each decade of bad air exposure. And this disaster is not confined to southern California.

Ozone damage, now known as ozone mottle, became visible in the southern Sierra in the mid-1970s and continues to increase ominously. ON countless days a brown layer of pollution hangs over the San Joaquin Valley west of Sequoia/Kings Canyon National Parks. It shows up plainly from Moro Rock. Afternoon upslope breezes blow the ravaging pollutants into the 5,000 to 7,000-foot levels (1,500 to 2,100 m) of the parks, where ozone works ruinous havoc on the pines and oaks and on some Giant Sequoia seedlings. Sequoia National Park has recorded the highest cumulative levels of ozone over a one-day period for all of the national parks. Levels in Sequoia regularly climb higher than those of Los Angeles.

Yosemite National Park, farther north, suffered a fivefold increase in ozone damage between 1985 and 1990. Thirty percent of its Jeffrey and Ponderosa Pines show yellow needle mottling, and no area in Yosemite’s mixed conifer belt stands free from ozone’s relentless scourge. Adjacent national forests display steadily growing numbers of Ponderosa and Jeffrey Pines with the thinning crowns and mottled needles that are ozone’s trademark.

California’s Great Central Valley sits in the midst of an even larger basin than Los Angeles, bordered by mountains and hemmed in by the same inversion layer that traps smog beneath. As populations of valley cities boom, more and more of their polluted air follows its daily, deadly flow uphill to the Mixed Conifer Forests of the western Sierra Nevada.

The most diverse coniferous forests on this earth, still very beautiful, face all the natural ecological challenges of forest life-fire, drought, insects, fungi, winds-with adaptations built in over centuries. Their genetic resistance to poisonous air is now being sorely tested. In both the short and the long run, air pollution of human derivation will require a solution for humans and trees, for both are dependent on the same air for survival.  Pages 109-110

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