This past week, Susan and I didn’t find any pasque flowers at Harlem Hills Nature Preserve. Eager to get a jump on spring, we took advantage of our downstate trip to seek out some woodland ephemerals. We were not disappointed. The forest floor of Upper Embarras Woods — our 14th dedicated Illinois Nature Preserve of the year — is carpeted with spring beauties.
There is but one dedicated Illinois Nature Preserve in all of Douglas County and it is a gem. The Upper Embarras (pronounced em-bragh) Woods is a 65-acre inholding within Walnut Point State Park. It lies immediately adjacent to a stretch of the Embarras River, itself designated by the Illinois Natural Areas Inventory as a biologically significant stream for its outstanding diversity of habitat features, including gravel bars, gravel-sand raceways, sandbars, riffles, and deep pools.
The nature preserve encompasses old growth forest of giant white oaks and hickories. These elders provide perfect habitat for a host of woodland birds, including red-bellied, red-headed and pileated woodpeckers–all three of which we relished today, along with oodles of black-capped chickadees, tufted titmice, brown creepers and white-sided nuthatches,
This time of year, in many wooded areas, you are likely to see only a patch or two of woodland wildflowers, mostly due to a lack of management. Too many of our protected natural areas are overrun with non-native invasives, including buckthorn and honeysuckle. These shrubby invasives quickly spread and crowd out native plant species, which is bad for the health of our woodlands and, well, pretty crappy for those of us who seek them out for their sheer beauty.
At Upper Embarras Woods, the spring beauties were everywhere, indicative that the nature preserve portion of the park is well managed. Fire scars on the trees indicate regular controlled burns, which emulate the natural wildfires that used to keep the woodland understory relatively open — necessary for a healthy mix of spring beauties, Dutchman’s breeches, bloodroot and other woodland wildflowers, as well as for seedling oaks and hickories.
By way of comparison, just on the other side of the path — across from the nature preserve — there are virtually no spring beauties. Why? Well, at first blush all those bushes might look nice and green. But they are honesuckle bushes. They are the first to leaf out, which robs wildflowers and tree seedlings of the light and nutrients they need to survive.
Sufficiently managing all of our protected natural areas — including dedicated nature preserves — remains a big challenge. Budgets are tight. Resources are scarce. But an early spring walk along the path that separates Upper Embarras Woods Nature Preserve from the rest of Walnut Point State Park reminds us why we need to find a way — on one side, an abundance of health and beauty, on the other side…well, there remains much more work to be done.