A very interesting article in the Milwaukee Journal-Sentinel compares almanacs kept by local naturists during the last century to conditions being experienced today. You'd have to conclude that the climate is warming.
Bradley is 89 years old, and using a pair of hiking poles, she
pointed out places where she has recorded the arrival of spring for the
last 30 years. Her father, the famed ecologist and pioneer of wildlife
management Aldo Leopold, had done the same before her.
But spring's advance has been so dramatic that if Leopold were alive
today, he'd have to rewrite parts of his seminal book, "A Sand County
Almanac."
Take, for example, the Canada geese. Leopold wrote that they "tumbled out of the sky like maple leaves" in March.
But records by his daughter show that migratory geese are returning home more than a month sooner - now arriving about Feb. 19.
The differences chronicled by father and daughter along the
Wisconsin River in Sauk County mirror hundreds of studies worldwide
that show that the climate is changing.
Other observations include quicker-blooming plants, the migration northward of the praying mantis and later freezing dates for Wisconsin's lakes. This is all similar to informal (and undocumented) observations I've made in my lifetime. It's getting warmer in Western New York, too, after all. I can't dispute it. But even though the article takes pains to mention how adaptable humans are, it's oddly worried about nature's ability to cope.
Indeed, scientists are worried that warming is causing mismatches in
the ecosystem - when a change in temperature alters the traditional
pattern of one species and harms another that depends on it.
"The $64 question," said UW's Waller, is whether this is happening yet in Wisconsin.
Near the Leopold cabin, the fly-catching eastern phoebe has started
to return home sooner in spring, apparently to catch up with the skunk
cabbage, which it depends on. The plant now blooms about two weeks
earlier than during Leopold's day.
"We are seeing life becoming uncoupled, and what we are talking about next is life unraveling," Waller said.
Schneider told an audience in Madison last fall that policy-makers
have responded to global warming faster where the signs are more
visible.
It's why California, under Republican Gov. Arnold Schwarzenegger,
passed a law in September to cut carbon dioxide emissions by 25% by
2020, effectively rolling back emissions to 1990 levels.
I was raised to believe that Darwin's Theory of Evolution explained how nature would evolve to account for changes to its environment -- survival of the fittest you know. In fact, evolution is the most sacred of our secular beliefs -- even more than human-caused global warming. These days only an evolution-doubter is met with more scorn than a global-warming skeptic.
Just this week, professors at Southern Methodist University protested a conference the mere scheduling of an Intelligent Design conference scheduled to be held on campus. While technically still only a theory, evolution is now so solidly entrenched in American thought and education that doubts about nature's ability to cope with change ring hollow. So why the concern, all of a sudden, over nature's ability to adapt? I thought this was "settled" science.
The big cry over global warming has little to do with nature, it's really about how humans feel about change. We're perfectly suited to deal with it, but we rarely welcome it and nature is an easy proxy for our fears. Now, for some anti-climate-change fanatics, global warming is a chance to make the capitalist West pay some penance for its evil profit-making ways, but for many others there's a very real fear of the unknown -- change might make things worse.
They should relax. Global warming -- if it even continues -- will be a blessing to some and a problem for others. But if Mr. Darwin's theories are correct, we'll all (praying mantises and Canada geese included) turn out just fine eventually. And if he was wrong, then Intelligent Design declares that all is happening according to plan. No cause to worry folks -- we've got both bases covered -- you can move along now. But please, put on some sunscreen -- it's hot out there.