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Sept. 27, 2013
Longleaf pine stands firmer than other pines in hurricane winds
With hurricane season upon us, landowners and land managers can rest easier if they are growing longleaf pine. Longleaf is not windproof, but it withstands the high winds and saturated soils associated with tropical storms much better than loblolly or slash pines.
If a hurricane had hit this summer, with the soils already saturated from the heavy rains, this resilience would have been especially important When Hurricane Katrina blasted the Gulf Coast in August 2005, she left a swath of damaged forestland. But longleaf pine withstood the storm much better than many other tree species, according to a S.C. Department of Natural Resources (DNR) wildlife biologist and forester.
In Mississippi alone, about 1.2 million acres of forestland were negatively impacted by Hurricane Katrina. Much of the damage was to bottomland hardwood forests and pine forests, but not all pine species were affected equally. According to Johnny Stowe, S.C. Department of Natural Resources heritage preserve manager, wildlife biologist and forester, longleaf pine withstood the storm much better than either loblolly or slash pines.
Longleaf pine has long been known to be great for wildlife like bobwhite quail, and is more resistant to fire as well as insect and disease pests such as Southern pine beetles and fusiform rust than other Southern pines. Longleaf has also been known to be more resistant to wind damage.
Dr. Glenn Hughes, a researcher in Forrest County, Miss., took advantage of Hurricane Katrina to gather some data and quantify longleaf’s storm-hardiness, according to Stowe. He compared longleaf, loblolly and slash in two pine plantations that were established in 1985. Both plantations were planted in all three species, and both sites were thinned four years before the storm. Researchers collected data on whether or not the trees were damaged, the type of damage, and other information.
The results of the research showed that longleaf pine was not only less likely to be damaged at all, but when it was damaged, it tended to lean or blow over, as opposed to snapping mid-stem. Conversely, most of the damage to loblolly and slash pines was from snapped trees. Snapped trees at once lose most of their dollar value, sometimes as much as 90 percent. Trees marketable as valuable chip-and-saw products before Katrina storm were reduced to pulpwood after the storm. Not only are snapped trees less valuable because of the loss of product value by itself, but also, prices tend to drop overall as a result of a glut of timber on the market all at once.
The majority of the Katrina damage to longleaf pine was trees that either leaned or blew over. Leaning or blown-over trees, because their root systems are at least partially intact, tend to stay alive and hold their value much longer. They can be harvested for higher value forest products long after snapped trees have gone for pulpwood or been wasted.
“Landowners in the Sandhills and Coastal Plain of South Carolina who value secure forestland investment should consider planting and managing for wind-resistant longleaf pine, especially if they are near the coast, where storm damage is more likely,” Stowe said. Having forests that are relatively wind-firm may be even more important to risk-averse landowners in the coming decades."
Landowners interested in planting longleaf pine this year need to be considering site-preparation, and ordering seedlings. The South Carolina Forestry Commission sells seedlings, and the Longleaf Alliance maintains a list of nurseries that sell longleaf.
The Longleaf Alliance is working with landowners, researchers, conservation groups and government agencies to restore longleaf to parts of its former range. Longleaf pine forests once covered about 90 million acres from Virginia to Texas, but only about three million acres remain. For more information on any aspect of longleaf pine, visit the Longleaf Alliance website or send an e-mail to firstname.lastname@example.org or call (334) 844-1032 in Auburn, Ala.
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