





Today I was reading daviesand.com, a comprehensive compendium of forestry issues written by a professional forester. Excerpted below are two of the pages (there are quite a few, I've only just started to explore). The first is this page and I have to confess, it confuses me. Clearly, extensive tree decline has been ongoing for decades, which begs many questions. Did I just notice it, or has something fundamentally changed recently? Certainly, the lichen spread is recent, but what does that mean? There are other indications that nitrogen is at the root of sudden, rapid tree decline. If so, where is it coming from? And where are all the other foresters that should be shrieking warnings that we are in danger of total ecosystem collapse, widespread and long lasting power outages, and runaway wildfires in the suburbs?
Never mind! Here's the content from the page I linked to, above. I'm making it all blue.
RACHEL'S ENVIRONMENT & HEALTH WEEKLY
January 11, 1996
News and resources for environmental justice.
==========
Environmental Research Foundation
P.O. Box 5036, Annapolis, MD 21403
Fax (410) 263-8944; Internet: erf@rachel.clark.net
==========
THE DYING OF THE TREES
If you read newspapers or magazines looking for information about forests, what do you find? You find stories about the destruction of rain forests in South America, and about the logging battle raging in the Pacific Northwest over the spotted owl.Except for these two issues, forest problems don't make the news. But forest problems are pervasive, and are as important intheir own way as toxics problems. To put it bluntly, trees are sick and dying everywhere in the U.S. At first blush this seems like an extreme statement. But a new book, THE DYING OF THE TREES by Charles Little, will convince you it is true. [1]
This book gives a detailed picture --from New England to Oregon and California, from Alaska to Florida, across the uppermidwest, across the southern border states, and even into the desert southwest where the giant saguaro cactus is in majordecline --of trees sick and dying. It seems clear that the dying trees are one more sign of danger, one more omen warning us that something is terribly wrong.
Why are the trees dying? The reasons are many and varied. In New England, New York, North Carolina, Tennessee, Georgia, Ohio, Indiana and Kentucky it's a combination of acid rain and clear cuts; in California it's killer smog; in Arizona and New Mexico and elsewhere it's excessive ultraviolet light filtering through the earth's damaged ozone shield; other places, it's pesticides, or it's toxic heavy metals released by burning coal and oil; in Alaska and Florida it's rising temperatures and rising sea levels from global warming; in Colorado, Oregon, and Washington state it's destructive forestry practices (clearcut logging, and fire suppression) that leave forests weakened, unable to withstand extremes of weather or attacks by insects or funguses.
In most places, in truth, it's probably various combinations of all these factors. Scientists are playing catch-up now, conducting studies that may explain the complicated causes of widespread tree death. But, as with toxics problems, if we postpone action until the scientists have described the problems completely, we'll get the answers too late to do any good.
Answers come slowly. Hubert "Hub" Vogelmann, a botanist at the University of Vermont, wanted to study an undisturbed forest, so in 1965 he made a thorough survey of Camel's Hump, a 4083-foot peak in the Green Mountains. So far as he knew, he was describing a healthy ecosystem. He measured the types and sizes of the trees, and various other aspects of the ecosystem. He had no particular purpose in mind, other than to gather knowledge about nature.
Periodically, he re-surveyed Camel's Hump, and a pattern began to emerge. The trees were dying. His survey in 1979, compared to the baseline study of 1965, showed a 48% loss of red spruce; a 73% loss of mountain maple; a 49% loss of striped maple; and a 35% loss of sugar maple.
By examining tree rings, and by other studies, Hub Vogelmann was able to show that the health of Camel's Hump had begun to decline in the period 1950-1960. Similar studies in the Black Forest of Germany, and in southern Canada, revealed that the most likely cause was acid rain.
Acid rain occurs when coal and oil are burned, releasing sulfur which combines with rain (or fog or snow) to make acid precipitation. Acidity is measured in units called pH. Pure water has a pH of 7 --it is "neutral" --neither acidic nor alkaline. Pure rainwater has a pH of 5.6 --slightly acidic because, while in the air, rain absorbs carbon dioxide to form a weak solution of carbonic acid.
After World War II the U.S. saw a massive rise in use of fossil fuels, coal and oil. The resulting smoke was obvious, and obviously harmful; in Donora, Pennsylvania (south of Pittsburgh) in 1948, half the people in the town fell ill for 3 days because of coal smoke in the air. Twenty people died. In London, England, in 1952, coal smoke killed 4000 people during a pollution episode. [2]
The official response in the 1950s was to build smoke stacks hundreds of feet tall, to dilute the pollution. Today the Ohio River valley is still dotted by enormous coal-burning power plants with stacks as high as 700 or even 1000 feet. These tall stacks allow the sulfurous pollution to travel 1000 miles or more, where it forms acid rain across the Adirondack mountains of New York, and across northern New England and southern Canada.
In Vermont, the rain has a pH of 3.8 to 4.0. The pH scale is "logarithmic" so a change from normal (5.6) down to 4.6 means the rain has gotten ten times as acidic as normal; at 3.6 the rain is 100 times as acidic as normal.
It wasn't until 1972 that Eugene Likens (then at Cornell University) and F. Herbert Bormann at Yale discovered acid rain. But meanwhile acid rain had been falling on northern New York and New England and on southern Canada for about 20 years.
What Hub Vogelmann has been able to show by studying Camel's Hump for 30 years is that acid rain doesn't just affect the trees; it affects the soil and thus the entire ecosystem. Soil contains a large amount of aluminum, but it occurs in the form of aluminum silicates; in that form, aluminum is not available to the roots of plants. But acid rain dissolves the silicates, releasing the aluminum and making it available to plants. When plants get aluminum into their roots and their vascular system, the roots clog, which prevents the plant from taking up adequate nutrients and water. The trees are weakened, and may then fall prey to extreme cold, or to insects or pathogens.
Acid rain not only releases aluminum into the soil. It also releases other minerals --calcium, magnesium, phosphorus --which are fertilizer for the tree. Acid rain releases these fertilizers to be washed out of the soil, leaving the soil depleted of nutrients.
But that is not the end of the problem. The roots of many trees create a symbiotic (mutually beneficial) relationship with an orange-colored sponge-like fungus called mycorrhiza. The tree roots provide sustenance to the mycorrhiza, and the mycorrhiza help the tree roots gather water and nutrients from the soil. But acid rain kills mycorrhiza, thus further reducing the ability of trees to absorb water and nutrients from the soil.
But that is not all. Acid rain kills off portions of the detritus food chain. The detritus food chain is all the microscopic creatures that "compost" leaves, twigs, pine needles, dead branches and so forth, turning them back into soil. Because the detritus food chain is damaged by acid rain, forest "litter" builds up on the floor of the forest. The litter prevents new saplings from taking root --they cannot reach through the litter to make contact with the soil below. Furthermore, the litter promotes the growth of ferns, which give off substances that inhibit the growth of red spruce saplings, among others.
This is not a complete description of problems caused by acid rain, but it gives a sense of the complexity of ecosystems, and how they can become unbalanced by thoughtless human intrusions.
Given the high rates of tree death, and the widespread nature of the problem --it is occurring to one degree or another in every state in the union --one would think that the community of botanists, forest ecosystem specialists, and U.S. Forest Service employees would be up in arms, advocating change. But one would be disappointed.
Throughout the book, author Charles Little describes studies and statements by the U.S. Forest Service downplaying the importance of tree disease and death. For example, in 1991 the Procter Maple Research Center at University of Vermont pinpointed acid rain and other air pollution as an important cause of decline of sugar maples in Vermont: "We think we are looking at the early stages of an epidemic problem," the Center's report said. The following year the U.S. Forest Service issued a report saying that 90% of the sugar maples surveyed were healthy and the overall numbers and volume of sugar maples was increasing.
People in the maple sugar business were stunned --their own experience was telling them something that the U.S. Forest Service was officially denying. It turned out the Forest Service had used a tricky way of counting dead trees; only the standing dead were counted--those lying on the ground were not.
Here's David Marvin, who owns a commercial "sugarbush" --a maple sugar farm in Vermont: "I don't want to condemn our forest scientists as a group," says Marvin, "but I am very concerned that a great deal of forest research is funded by the federal government, by chemical companies, and forest industry companies --and it's very difficult for people who depend on that funding to stick their necks out or to help influence policy that might go counter to what the funders are interested in. Many scientists I talk to will not publicly say anything about the connection between air pollution and forest decline, but privately, to a person, they tell me, yes, we've got a problem."
Forest-protection activists in the Pacific Northwest have long considered the Forest Service a rogue agency, captured by the forest products industry. Under the Reagan and Bush administrations, the situation grew so extreme that when Jack Ward Thomas took over the leadership of the Forest Service in 1992, he immediately issued six "messages" to personnel throughout the agency. The first three messages were: (1) Obey the law; (2) Tell the truth; (3) Implement ecosystem management. That such orders had to be issued speaks volumes about the past performance of this federal agency.
In 1993 there was evidence of new candor in the Forest Service. A report issued that year said timber mortality [death], on a volume basis, had increased 24% between 1986 and 1991, "in all regions, on all ownerships, and for both hardwoods and softwoods." Hardwoods were particularly affected, and particularly in the south, where the mortality increase was 37%.
A new candor --and a continuing candor --among scientists and foresters will be essential. But also we need a new recognition that there are many causes of tree death, just as there are many causes of toxic poisoning. To fix these problems, whether tree deaths or toxics, will require us first and foremost to study and emulate nature, to learn to live within natural limits, and to respect the right of non-human species to inhabit the planet. For starters, we should cut waste, not trees. [3] If we don't take these lessons to heart, and soon, the trees will survive but probably we will not.
--Peter Montague
===============
[1] Charles E. Little, THE DYING OF THE TREES; THE PANDEMIC IN AMERICA'S FORESTS (New York: Viking/Penguin, 1995).
[2] Howard E. Hesketh, UNDERSTANDING & CONTROLLING AIR POLLUTION (Ann Arbor, Michigan: Ann Arbor Science Publishers, 1974), pgs. 48-49.
[3] See REHW #468 for ways to stop using wood.
Here's the second page:
From: Jennifer Tetterton
Date: Wednesday, April 14, 1999 2:03 PM
Subject: UPDATE: Air Pollution and Trees
Scientific Consensus on Air Pollution Impacts on Appalachian Forests
Background
On March 26-27, 1999, fourteen scientists and experts with diverse specialties came together for a conference at Duke University's Nicholas School of the Environment, entitled "Acid Rain, Ozone and the Great Eastern Forests". They reviewed relevant literature, gave presentations of their own work, and engaged in scientific debate and discussion on the relationship between air pollution levels and the health of Appalachian forest ecosystems. Their conclusions, based on consensus, were presented to the public on the second day and are summarized here.
*******
Participating Scientists/Experts
John Bachmann, EPA
Robert I. Bruck, North Carolina State University
Wade Davidson, University of Kentucky
Frank Gilliam, Marshall University
William Grant, NASA
Jillian Gregg, EPA
Orie L. Loucks, Miami University
Steve McNalty, US Forest Service
Niki Nicholas, Tennessee Valley Authority
Ram Oren, Duke University
Dan Richter, Duke University
William Sharpe, Penn State University
William Smith, Wake Forest University
David Weinstein, Cornell University
*****Summary of Consensus Findings********
1) Forest Effects of Soil Acidification
¨ In the late 20th century, many Appalachian highland soils are progressively being acidified by atmospheric deposition and by the regional regrowth of the eastern forest.
¨ Acid deposition contributes significantly to soil chemistry, and accumulated over decades, can both increase (nitrogen and sulfur) and decrease (nutrient cations) the chemical elements in soils.
¨ Soil acidification can be a predisposing stress contributing to the decline of forest plant species.
2) Forest Effects of Ground-level Ozone ("smog")
¨ Tree growth decreases under controlled ozone exposures for tree seedlings and saplings.
¨ Ozone effects on trees are cumulative, thus exposures to even small concentrations can have an impact over time.
¨ Reducing ozone levels to below ambient results in increased photosynthesis and growth in sensitive forest species.
¨ The Appalachian forests will, most likely, change significantly if ozone levels remain the same, or increase.
3) Forest Effects of Nitrogen Saturation
¨ A continuum of nitrogen saturation exists in the landscape, and the southern Appalachians represent an area where many factors leading to saturation come together.
¨ Nitrogen enrichment appears to inhibit winter hardiness for conifers and possibly for hardwoods.
¨ Nitrogen saturation affects trees through relative reduction of fine roots, which makes trees more susceptible to short term drought.
¨ Nitrogen saturation increases trees' susceptibility to insects/disease.
4) Air Pollution Effects on Forest Diseases and Pests
¨ Both acute and chronic episodes of acid deposition, ozone, and nitrogen can alter the incidence, epidemiology, and magnitude of tree insects and pathogens.
¨ Experimental and field studies have shown insects and diseases can be proximal causes of forest decline but they are also as an outcome of precursor stresses, including atmospheric deposition.
¨ Anthropogenic pollutant stress has been shown (in controlled experiments) to elicit plant biochemical and anatomical changes, leading to increased insect infestations and disease epidemics.
5) Summary Findings/Overview
¨ Evidence exists that, for the high deposition regions of the Appalachians, acidification of the soils, ozone effects on trees, nitrogen enrichment, and potential insect and disease interactions with the above and other stressors, place the broadleaf ecosytems of the region on a path to change of probable public significance.
¨ More research, including long-term field studies and modeling, is urgently needed to fully understand the interactions involved in forest decline in the Appalachians.
*******
For supporting references, the complete findings, or a more official hard copy contact:
Jennifer Tetterton, Clean Air Organizer
Appalachian Voices, 703 W. King St., Suite 105, Boone NC 28607
phone (828) 262-1500; jent@boone.net; www.appvoices.org
Jennifer Tetterton
Appalachian Voices
Professional Bldg.
703 W King St, Suite 105
Boone NC 28607
phone (828) 262-1500
fax (828)262-1540
www.appvoices.org
Leland Palmer says:What I want to know is, what are the emissions from these biofuels and how do they affect trees and food crops? Anybody else wondering about that?
December 12, 2009 at 1:51 pm
About the food shortage biofuel connection, I’m not sure the global rise in food prices was any more spontaneous than the artificial rise in oil prices we saw under the Bush Administration.
In the U.S., for example, Goldman Sachs has been accused of massive commodities trading, which has been alleged to effectively decouple price from supply and demand:
http://www.rollingstone.com/ politics/ story/ 29127316/ the_great_american_bubble_machine
The bank’s unprecedented reach and power have enabled it to turn all of America into a giant pumpanddump scam, manipulating whole economic sectors for years at a time, moving the dice game as this or that market collapses, and all the time gorging itself on the unseen costs that are breaking families everywhere — high gas prices, rising consumercredit rates, halfeaten pension funds, mass layoffs, future taxes to pay off bailouts. All that money that you’re losing, it’s going somewhere, and in both a literal and a figurative sense, Goldman Sachs is where it’s going: The bank is a huge, highly sophisticated engine for converting the useful, deployed wealth of society into the least useful, most wasteful and insoluble substance on Earth — pure profit for rich individuals.
The energy sources that the fossil fuel companies fear the most, and privately are the most interested in, are biofuels, IMO.
Consider ExxonMobil’s recent investments in algae based fuels, and their 600 million dollar investment with Synthetic Genomics to develop algae based biofuels that can be substituted for gasoline.














Ocean Acidification Rates Pose Disaster
"A report by more than 100 of Europe's leading marine scientists, released at the climate talks this morning, states that the seas are absorbing dangerous levels of carbon dioxide as a direct result of human activity. This is already affecting marine species, for example by interfering with whale navigation and depleting planktonic species at the base of the food chain.Ocean acidification – the facts says that acidity in the seas has increased 30% since the start of the industrial revolution. Many of the effects of this acidification are already irreversible and are expected to accelerate, according to the scientists."
"We face the gravest threat that civilization has ever confronted. It's global in nature and requires a global solution. Increased CO2 emissions anywhere, whether from China or the United States or from one of the countries that is burning its forests like Brazil or Indonesia—from wherever the emissions come, they have the same effect: They trap much more heat from the sun, melt the ice, raise the sea level, cause stronger storms, floods, drought, bigger fires, generate millions of climate refugees, destabilize political systems, threaten the growing of food crops and cause a number of other catastrophic consequences which, taken together, threaten the basis for the future of human civilization on the Earth. Because these consequences are distributed globally, the problem masquerades as a distraction. Because the length of time between causes and consequences stretches out longer than we're used to dealing with, it gives us the illusion that we have the luxury of time. Neither of those things is true. The crisis is a concrete threatening reality today. It stands to get catastrophically worse unless we take action before the accumulation [of] this global warming pollution reaches such toxic levels that the problem becomes bigger than we can solve."
Anonymous said... Checking in from a link, I'm not sure where you are going.
If you're a global warmer, you should be ashamed of the exposure of the despicable so-called "scientists" who have bought into and sold this stupid crap. Do you realize how great the economic impact can be from psuedo-science from shit-for-brains guys like Al (I have a 20,000 SF mansion and a boat the size of your whole yard Gore?
Get a life, get a brain. Do you want to live in caves? You will have to kill animals to get their fur to stay warm. Especially since the 1970'-80's next Ice Age might come back. Stop pretending you know things that you don't have a clue about.
I am so flattered by this, I hardly know where to begin. First, a disclaimer - in a very short space it contains so many of the designated traits of a denier post that I am a bit suspicious the whole thing is nothing but a prank from someone over at Denial Depot. But assuming it is legitimate, let's examine this epistle.
*Every denier point has to include Al Gore, usually mentioning his weight and/or his house. They NEVER mention how much money he has spent to green his house, how he gives everything he makes from the movie and investments in green technology to a green foundation to educate morons, and how, the theory (theory, like evolution, gravity, and plate tectonics, not a wild proposition) of global warming is grounded in scientific research, not Al Gore. Click here for an excellent interactive graph from the NYT about the long history of climate science.
*Deniers like to claim that the reason thousands of scientists and every major scientific organization agree that humans are causing climate change is because they have a financial motivation and have thus engaged in a vast global conspiracy to hoodwink the public and legislators so they can buy Ferraris with their enormous government-funded research grants. As with other denier points, this is ludicrous. Why don't they compare a university professor's annual salary of, say, $40,000 with the millions, nay billions, earned by oil, gas and coal companies and the hundreds of thousands to pay shills and lobbyists to confuse the public?
*Deniers love to bring up the long-ago and oft-debunked ice age prediction in the '70's. It was Time Magazine that made that prediction, once, based on the slimmest of scientific research. Here's a very entertaining video explaining what really happened.
*Deniers are famous for straw man arguments. That is, they invent a point you never made and then say or imply that it's false. They do that because they can't really argue the facts. In this case, Anonymous asks if I want to live in a cave and kill animals for their fur - as if that is the result, or only alternative to acknowledging climate change and converting to clean energy!
*Deniers dread change. They are so afraid someone is going to pry the teevee remote from their desperate fingers they can't even see how absurd it is to claim legislation to curb greenhouse gases will "cost too much." Aside from the fact that new industries building solar plants, electric cars, etc. would be good for the economy, this approach completely ignores the cost of NOT converting to clean energy - costs like cancer, a despoiled ecosystem, crop failures and famine, and foreign wars, not to mention rising seas and the collapse of life in the acidifying oceans.
*Deniers are frequently rude and make ad hominem attacks. In this instance, I am advised to get a life and a brain, obviously inferring I currently posses neither, and also, that I pretend to know things I haven't a clue about. This sort of random insult and the straw man are all deniers can offer by way of information, because they can't address the real issue. Note in this case, Anonymous doesn't even bother to refute one single empirical observation I have made on this blog, and claims to be unable to "see where I'm going". It's quite lazy really, because I have posted over and over several recurring themes - and frequently admitted I'm not qualified to make scientific explanations.
What I have said, is that trees are dying at an alarming rate. Other vegetation shows the same damaged foliage. Only a very large component of the environment can drive such a vast impact. I've speculated as to possible causes, from drought to ozone to ethanol emissions to the disruption of the nitrogen cycle, and tried to weigh the likelihood of each factor. Does Anonymous dispute that any of those effects from greenhouse gas emissions are harmful to vegetation? I hope not, because it's well established that they are!
*Probably forever more, there must inevitably reside in every Denier comment a reference to the infamous hacked emails. Sigh. This has been revealed, by so many writers, as nothing but a criminal theft and desperate attempt to smear all of science. But try this post at Climate Progress and do a little search there while you're at it, for more on the subject. And go to Greenfyre. Or straight to RealClimate.
*Of course everyone makes spelling and grammatical mistakes, especially on the intertubes. Nevertheless, and last but not least and almost universally true, deniers find punctuation a challenge. (I have a 20,000 SF mansion and a boat the size of your whole yard Gore?
Where, oh where is the missing parenthesis? Thank you for that, Anonymous!
And please, please don't return and tell me I've been duped according to Poe's Law!
Why does any of this matter? Because this is something humans want to avoid:


The Problem
There are two major problems with nitrogen: some regions of the world do not have enough reactive nitrogen to sustain human life, resulting in hunger and malnutrition, while other regions have too much nitrogen (due mainly to the burning of fossil fuel and to the inefficient incorporation of nitrogen into food products) resulting in a large number of major human health and ecological effects. The rate of change of the problem is tremendous, probably greater than that for any other major ecological problem. For example, half of the synthetic nitrogen fertilizer ever used on Earth has been used in just the last 15 to 20 years. Opportunities to reduce these problems are plentiful. A prerequisite to reducing these problems is the development of a sound scientific base on which to begin to discuss policy options.
As nitrogen moves along its biogeochemical pathway, the same atom can contribute to many different negative impacts in sequence: as NOx it can increase ozone concentration in the atmosphere, decrease atmospheric visibility, and increase acidity of precipitation; following deposition it can increase soil acidity, decrease biodiversity, lead to coastal eutrophication, and then emitted back to the atmosphere as nitrous oxide it can increase greenhouse warming, and decrease stratospheric ozone. Nitrogen can be transported to any part of the Earth system, no matter where it was introduced. This sequence of effects has been termed the nitrogen cascade.