Preaching to Deniers

Back in college, I had a friend that would believe pretty much anything nature-related I told him. I was the biologist-in-training, after all (I didn’t abuse that trust.  Honest).  When he asked if male white-tailed deer grew a new tine on their antlers every year, I explained how the bone of antlers is covered in fine fur and vascularized, growing from nubbins to full size in the space of half a year.  At that point, the soft tissue dries and is rubbed off, leaving the hard bone.  The antlers don’t grow any more, but stay on the deer’s head until well into winter, when they fall off.  Then the cycle starts anew, and the buck, now a year older, may well grow a larger set of antlers.

Fast forward a decade or so.  I was a biologist at some expo or another; the table was decked with bones, tortoise shells, snake skins, and other bits of natural detritus with which to engage the public in conversations about how cool nature is. A woman came by, looking with mild distaste at my display.  At last, she pointed at the shed antler I’d picked up in the woods.  “Did you kill that deer?” she demanded.  I launched into my spiel on the antler growth cycle with the enthusiasm of a young professional naturalist.  I ended my micro lecture with a verbal coda indicating how interesting I found the whole process.

“Uh-huh.”  Not the reaction I was expecting.  She clearly didn’t buy a word that I said, because I was certainly lying to cover up evidence of my Bambicide.  Nonplused, I showed her the burr, running my finger over the rough transitional surface where the antler detached from the pedicle on the buck’s head; it was obviously not sawn off a dead deer.  Still didn’t matter.  I felt the weight of her judging gaze as she proceeded to visit another table featuring less unsavory characters than government biologists like me.

Earlier this week, I was talking with someone about one aspect of my job: advocating for certain suites of native plant species, a process that often involves removing non-natives as well as native species of a different seral community.  I went on to say that forest thinning and regular regimes of prescribed burning are standard management tools in the southeastern US. Foresters and wildlife biologists are trying to create openings in forests to bring back endangered animals, but ironically those plans are halted by lawsuits from well-intentioned “nature lovers” who think all forests should be climax forests, and that any tree cutting was only for the profit of the timber industry.

My correspondent suggested, “Maybe the scientists could do some educational outreach and turn the nature lovers into volunteers. When folks understand the science, they become great advocates.”

Oh, one would believe so.  And don’t think we don’t do outreach.  Here’s a secret about biologists: we are often very knowledgeable introverts.  One of the things that draws us to a career in the outdoors is limited contact with people.  Further, a biologist often knows that a casual question from a visitor at a booth will have an answer that encompasses an hour’s lecture of foundational background, examples, and counter-examples.  They must mentally distill this into a 20-second soundbite that still sounds convincing to the layman. 

And even if we were all ecological advocates with the eloquence of Carl Sagan, delivery of the message is only half the battle.  The receiver still must accept it, and there are several barriers to overcome.

Let’s start with the power of emotion.  Emotion is immediate and viscerally satisfying, while one must be patient and discerning with facts.  I can point to a browse line and explain why humans must cull a deer herd, but weighed against a photo of a hunter-killed deer I may well lose the argument.  My coworkers can list the plant and animal species endemic to a longleaf savanna ecosystem, but can that compete with the image of the charred, barren forest floor that is periodically  necessary to preserve those species?

The next hurdle is the cognitive bias. Certain members of the public dismiss our voices, particularly in the last couple of decades.  Is it because they’ve been lied to by dishonest authorities? Because they’ve been trained by fringe news sources to assume anyone coming out of a university has a hidden agenda?  We can’t be certain of the reason, but the result – skepticism veering into denial – is evident.

Finally, there is the willingness to change.  This seems to be the highest hurdle.  The ability to change one’s opinion when presented with new facts seems as rare and as valuable as any superpower.  The shed-denier at the beginning of this essay is but one of many I’ve encountered in person or via social media. “I’m entitled to my opinion” is acceptable in matters of personal taste, but too many in today’s society take it to mean, “My ignorance is as valid as your specialized knowledge.”

If you are reading this, likely you are part of the choir I’m preaching to; you’re nodding because you’ve probably had run-ins with the arrogantly ignorant folks who believe their emotional opinion overrules your fact-based assertion. But if I am fortunate enough to capture a pair of fresh eyes linked to an open mind, please believe that I am not getting paid under the table by Big Timber.  My interest in nature began with reading about dinosaurs as a toddler and has never waned.  If I tell you something about the natural world, it’s what I believe to be true.

I have been around long enough to know there are no simple solutions.  Improving habitat for one species may be detrimental for another. One of the more difficult parts of a biologist’s job is to condense this knowledge into an elevator pitch that will enlighten someone who may be happier in the dark.

The Dance of Lights

Is a picture worth a thousand words? 

Depends on the picture, and the quality of the words. 

I lack the picture, and am not confident that the words will be adequate.  Nevertheless, here goes.

My wife and I took a weekend getaway in the northeast corner of Georgia, nestled in a small rental in a cove framed on three sides by green-mantled mountains.  The little cabin shared a fenced-in field with a barn and a couple acres of unmowed grass. Beyond the fence were other fields and other houses, some abandoned but most with more permanent residents than the sort our getaway hosted.  It was a pleasure to hear chickens rather than sirens, and to let the dogs out into the yard without a leash, confident that the rabbits and whistlepigs (as my wife’s people called groundhogs) had the sense to clear out before the hounds noticed them.

The sun had dipped below the nearest hills when we sat on the patio and ruminated in the still, cooling air.  Turns out, we were waiting for a spectacle we weren’t even expecting. 

We spotted the first flash a few minutes after sundown – a silent greenish spark, twenty yards distant among the branches of a black walnut.   It was followed a minute or so later by another brief glow farther down the treeline.  I enjoy seeing lightning bugs on summer evenings, and noted these as a part of the background, along with distant treefrogs and the occasional flash of heat lightning. 

Why is it easy to dismiss such a natural wonder?  A beetle that mixes biochemicals to create visible light with almost no heat?  A beetle that uses this visible signal to alert potential mates?  A beetle which flashes its bioluminescent lantern in a particular pattern to distinguish itself from the dozens of other firefly species in Georgia? A beetle whose numbers, like those of many insects, have dwindled in recent decades?  Watching a biochemical flare popping over every five or ten seconds was notable back home, but it wouldn’t hold my attention long.

Yet fifteen minutes later, I noticed that these fireflies were uncommonly active.  As the treetop silhouettes faded against the dimming sky, the light show ramped up, drawing us into the field for a clearer look.  By full-dark, I could look in any direction and see ten to twenty flashes per second. In the trees and above the tall grass, a multitude greenish sparks floated in the darkness.

My wife was awed; she said she had not seen such an intense display since her childhood in western North Carolina, before developers transformed the fields and orchards.  We watched the green sparks, like embers from a faerie fire, appear and vanish the blink of an eye. From beside our heads to two hundred yards away, they flared silently.

For the next night – our final night at the cabin – we determined to make best use of the only cameras we had: our phones.  But despite fiddling with the exposures on photos and video, the devices let us down.  They just weren’t sensitive enough to register the brief pinpoints flaring in the otherwise complete darkness. Out of many attempts, the best I scored was one photo with a few blurred green spots.  There was also a video of the female lightning bug that I plucked from the grass at my feet.  It crawled across my arm to the top of my head, strobing like it was overcaffeinated, before dropping back on the ground.  But without a good way to visually document the spectacle, we were left no option but to capture the moment as we do so many of life’s stolen moments: with the mind’s eye.

After a long while bearing witness to the dance of lights, the promise of an early morning made us to reluctantly retreat indoors.  I wonder if anyone in that little valley was appreciating the natural spectacle.  How often did those spending nights at the cabin turn off the television long enough to notice the show outside their window? 

Looking back, I can confirm that my words were inadequate.  But perhaps they will be enough to encourage you to seek out this natural light show in your own forest, field, or back yard.

Additional Resources:

A firefly fact sheet (pdf) from the Georgia Extension Service.

Firefly.org: Conservation and research information.