To my way of thinking most wildlife management comes down to having a variety of stages of succession in relative proximity. Different species use different stages at different points in the annual cycle. Some folks think of variety as having a mix of 6 different crops in a food plot. I think of it as having pines, hardwoods, and openings at different stages with on-going disturbance be it fire, discing, mowing, planting, thinning, clear-cutting, or whatever. While mature hardwoods do provide an important food source for an important period of the year and mature pines can provide thermal cover and turkey food, sunlight to the ground in thinnings and openings creates a lot of food.
It never ceases to surprise me how wild game relates to cover. I always thought turkey wanted open areas where they can rely on their keen eyesight for protection to feed in the fall, be it fields or open hardwoods. One day, I was archery hunting on base in an area that had been select cut a few years back. They left scattered mature oaks to provide seed for natural regeneration. Now that plenty of sunlight hit the ground, you could not see more than 15' in any direction from ground level. I could not believe how much turkey used that thick cover that season. While I could see deer from the treestand, I could hear turkey coming from a long way off but they had to almost be under my stand before I could see them. That thick cover did not bother them one bit. Those mature oaks were dropping acorns all through that thick ground cover and turkey were gobbling them up. I don't think I hunted that location a single day that fall without seeing turkey.
Thanks,
Jack