Saturday, February 23, 2008

Februry 23, 2008 Outdoor Column

AT WOODS EDGE

Seeing the forest for more than the trees

By Brad Stefanoni | The Morning Sun

You may have read of my annual sojourns to the watered woods of Arkansas for some of the finest green timber duck hunting found anywhere in the United States, but few other than Mrs. Woods Edge know that shooting mallards is not my primary motivation for making the trip.

Arkansas' Grand Prairie region lies within the Mississippi Alluvial Valley. This vast alluvial wetland area once encompassed more than 24 million acres of the Mississippi River's floodplain, stretching from southern Illinois to the Gulf of Mexico. A mere 20 percent of those original 24 million acres remain intact today after America's thirst for more agricultural lands swallowed the majority of those original historic bottomland hardwood forests.

To give one an idea of the significance of this floodplain, the Mississippi Alluvial Valley drains nearly 40 percent of all rain that falls on the continent of North America.

The Mississippi Alluvial Valley serves as the primary wintering ground for mallard ducks in North America. A duck hunter needs only to spend an hour in a flooded bottomland hardwood forest to realize that hunting mallards is an extremely nearsighted view of the impact this vanishing habitat has on wildlife diversity.

Prior to the agricultural revolution, heavy fall rains in the Mississippi Alluvial Valley caused creeks and rivers to swell with runoff water and overflow their banks. The hardwood forests that bordered those waterways would naturally be inundated with water, thus exposing new food sources such as acorns, moist soil plant seeds, and a smorgasbord of aquatic invertebrates.

Mallard ducks would flock to these areas by the thousands to feed, rest, and seek thermal protection from cold winter winds. And, where one finds ducks one finds duck hunters.

Most, if not all, duck hunting in the Mississippi Alluvial Valley in the early 20th Century took place in the woods. Duck hunters soon realized that calling to the ducks with their mouths or primitive duck calls would help bring the ducks closer to their "honey holes." Decoys evolved next as artisans began to carve wood into the shapes of ducks.

As simply as that, a tradition was born.

The sport of duck hunting has seen a myriad of changes in the last 100 years - from battery powered spinning wing decoys to Gore-Tex to duck calls made from acrylic and polycarbonate. But, when you step into the flooded timber around Stuttgart, Ark., you take a step back into a simpler time reminiscent of days gone by. A realistic-sounding duck call, a handful of decoys, and some good friends are the only ingredients needed for a sensory feast of the natural world.

I fear that, as these critical wetland areas continue to disappear, the next generation of duck hunters may not have the opportunity to watch the sun rise in a flooded pin oak forest. The Father of Wildlife Management, Aldo Leopold, called such places "great possessions" in his book A Sand County Almanac. He once wrote, "There are some who can live without wild things, and some who cannot."

Mrs. Woods Edge and I fall into the category of the "some who cannot." We hope we can demonstrate to our two boys a conservation ethic that helps to ensure their generation - and many to follow - have the opportunity to see an amber sunrise in the flooded timber.

Friday, February 08, 2008

January 12, 2008 Outdoor Column

In business the three key words are, "Location, location, location." In sustaining viable wildlife populations all the ingredients can be boiled down to one word: Habitat.

Webster's Dictionary defines habitat as "The type of environment in which an organism or group normally lives or occurs."

Any wildlife biologist worth his waders will label food, water, shelter, and adequate space as the four critical keys to thriving wildlife populations. Now, take away three of those crucial components (food, shelter, adequate space) to begin to get a feel for the impending threat to wildlife that depend on Conservation Reserve Program grassland ecosystems for their very survival.

Ducks Unlimited waterfowl biologist Mike Checkett blogged recently about the new energy bill's impact on the Conservation Reserve Program and the wildlife that call those ecosystems home.

According to the Ducks Unlimited website, the Conservation Reserve Program was born via the 1985 Farm Bill with the mission of paying agricultural producers to retire marginal cropland from production for 10 years. Habitat created to provide cover for upland species also would significantly contribute to nesting cover for prairie nesting species of waterfowl like mallards and pintails.

Since 1985, literally millions of acres of erodible farmland have been converted to native grass prairies, field borders, and riparian buffers to provide critical wildlife habitat while, at the same time, preventing soil erosion. Both game and non-game species benefited from this significant boost to available habitat.

Fast forward to January 2008, when many early Conservation Reserve Program contracts are eligible for expiration. Biologist Checkett reports Federal figures show North Dakota alone converted 420,000 acres of Conservation Reserve Program habitat back into tillable farmland in 2007.

Checkett also reports that South Dakota has lost 214,314 acres (14.3 percent) of Conservation Reserve Program land since Sept. 30, 2007. Montana lost more than 159,000 acres since that date.

Why?

Most of the aforementioned reductions in Conservation Reserve Program acres can be attributed to increasing prices in the commodities market. Currently, this market is surging ahead due to increased demand for corn and oilseeds to be used in the production of biofuels.

Now, therein lies a whale, or, in this case, a bison of a dilemma. Turn on the television to any channel and one can view many commercials promoting the latest biofuel-powered vehicle or other bio-based products. Personally, I can pump E-85 Ethanol into my Ford Ranger and feel pretty good about not burning fossil fuels and contributing to the raging petroleum industry? or can I?

As a wildlife biologist, where does my allegiance lie? Do I burn corn-based ethanol to save fossil fuels while knowing that Conservation Reserve Program acres may be tilled to do so? Do I fill up with petroleum-based unleaded before driving to a 20 year-old Conservation Reserve Program field to protest the plow cutting into the native switchgrass and big bluestem?

The column inches provided by this outdoor page are not nearly sufficient to begin this debate. All I hope is that it serves a springboard to further investigation of other credible resources.

I encourage followers of At Woods Edge to visit www.ducks.org and click on "Biologist Blog" for a good jumping-off point on the current and future of the Conservation Reserve Program.

I'm writing this column while looking at a piece of antique barn wood hanging on the wall at Woods Edge that is inscribed with the words, "Home is Where Your Story Begins." Habitat is the "home" of wildlife. I hope our future generations have a story with a happy ending.

January 26, 2008 Outdoor Column

As the Woods Edge boys pushed our cart through the store this past weekend, I heard one of my all-time favorite wintertime comments from a fellow shopper.

"Boy, it is sure cold outside, glad I'm not a duck standing out on the ice freezing my toes off!"

I cringed, but kept rolling the cart toward the cereal isle with one hand on the handle and the other over Older Son's mouth to squelch the words I knew were about to come out of his mouth.

"Dad, didn't you say duck's feet don't get cold, 'cause they have those 'circle veins' in their feet to keep them warm?" spouted Older Son as I removed my hand at a distance I deemed out of earshot.

It's true.

In fact, why wouldn't one want to be a duck — to be able to be outside in the dead of winter completely and utterly stark naked and not be the least bit cold?

And, for the record, ducks actually only have three 'toes' as their hind 'toe' is called a hallux.

The feet and legs of ducks are absolutely crucial to their capacity for thermoregulation. Thermoregulation is simply maintaining body temperature. Both cold-blooded animals (reptiles, amphibians) as well as warm-blooded animals like ducks, physiologically maintain their body temperature to adapt to the particular atmospheric conditions in which they live.

Cold-blooded animals' body temperatures may range near freeing to more than 100 degrees, while warm-blooded animals maintain a constant and relatively high core body temperature.

It is, actually, a very simple process by which ducks use "counter-current" circulation to warm their feet and legs:

1. Veins take blood away from the feet where it is recycled through the lungs and heart.

2. In the duck body's warm core, the blood is recharged with oxygen while being warmed to near 100 degrees.

3. Arteries return this warmed blood to the duck's legs and feet. In a duck's feet and legs, arteries and veins lay alongside each other so the warm, arterial blood radiates heat to the cooler blood in the veins, thus limiting heat loss in the duck's tootsies through this "counter-current."

This does not mean that a duck's legs and feet are a toasty 100 degrees like their core temperature, however. Some heat loss does occur when their extremities are exposed to sub-freezing temperatures - so a duck's feet may be closer to 40 degrees than 100 degrees. But, as long as the temperature in a duck's legs and feet does not drop below the freezing mark, they will incur no soft tissue damage.

Ducks also conserve heat through other methods, such as standing on one leg to reduce exposure and reducing blood flow to their legs and feet in very cold weather in order to keep heat loss to a minimum.

Drive by Lakeside Park in Pittsburg the next time Playter's Lake is iced-over and I almost guarantee a sighting of a handful of Canada geese balancing on one foot on their frigid arctic abode.

It is now 19 degrees Fahrenheit at Woods Edge. I think I will run outside barefooted to test how long my "non-counter-current" human feet can stand the frozen front lawn. Mrs. Woods Edge says I have "duck on the brain" half of the time, anyway.

I hope she doesn't lock the door.