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By lying on your back under an oak tree, you can look up and estimate its number of acorns. But why? “A lot of state wildlife agencies do acorn surveys annually because hunters want to know crop sizes, which fluctuate like crazy from year to year, among different oak species, and among locations,” says USDA Forest Service scientist Katie Greenberg. “Big acorn crops can help to increase reproduction and survival of deer, grouse, turkeys, and other game species that eat acorns. In fact, acorns are considered a keystone species because mice and squirrels also benefit from big acorn crops, and so do other animals – like hawks, foxes, and bobcats – that in turn eat them. Foresters are also interested, since acorns are the seeds for future baby oak trees.”
- Effect of gap size on composition and structure of regeneration 19 years after harvest in a southeastern bottomland forest, USA
McNab, W. Henry; Kilgo, John C.; Blake, John I.; Zarnoch, Stanley J.
- Oak growth and acorn production in southern Appalachian mature forests and shelterwood with reserves regeneration harvests
Greenberg, Cathryn H.
- Estimation of total phenolic compounds and non-targeted volatile metabolomics in leaf tissues of American chestnut (Castanea dentata), Chinese chestnut (Castanea mollissima) and the backcross breeding generations
She, Jinyan; Mohottige, Chathuri U. G.; King, Mary; Jiang, Yi; Mlsna, Matt; Clark, Stacy; Baird, Richard; Mlsna, Todd.
- NABat: A top-down, bottom-up solution to collaborative continental-scale monitoring
Reichert, Brian E.; Bayless, Mylea; Cheng, Tina L.; Coleman, Jeremy T. H.; Francis, Charles M.; Frick, Winifred F.; Gotthold, Benjamin S.; Irvine, Kathryn M.; Lausen, Cori; Li, Han; Loeb, Susan C.; Reichard, Jonathan D.; Rodhouse, Thomas J.; Segers, Jordi L.; Siemers, Jeremy L.; Thogmartin, Wayne E.; Weller, Theodore J.
- Preliminary estimate of the immediate effects of Hurricane María on the tree structure and species composition of novel forests in the moist lowlands of Puerto Rico
Báez Rivera, G., Cruz Aguilar, R.E., Pérez Méndez, A., Rivera San Antonio, J., Túa Ayala, G.Z., Keyser, T., Abelleira Martínez, O.J.