Skip to Main Content
Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.
Mortality of trees in loblolly pine plantationsAuthor(s): Boris Zeide; Yujia Zhang
Source: Gen. Tech. Rep. SRS-92. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 305-309
Publication Series: Miscellaneous Publication
PDF: View PDF (71 KB)
DescriptionThe annual probability of mortality for planted loblolly pine (Pinus taeda L.) trees was estimated using a set of permanent plots covering the entire native range of the species. The recorded causes of death were infestation by the southern pine beetle (Dendroctonus frontalis Zimmermann) and other insects, lightning, and unknown reasons. It was found that mortality from these causes does not change with age of trees, which allowed us to calculate an overall mean annual mortality probability for each density-independent factor. Two sets of these estimates are provided: one for all plots and another for the plots that in the past were affected by a given factor. A model was constructed to analytically separate densitydependent from density-independent factors of mortality recorded as "other causes." The average annual probabilities of mortality are 0.8 percent and 0.6 percent for density-independent and density-dependent causes, respectively. Our analysis also covers the events that wipe out entire plots such as flood, fire, and catastrophic insect infestation. This neglected kind of mortality, referred to as indiscriminate, eliminates four times as many trees as density-dependent mortality and three times as many as density-independent mortality.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationZeide, Boris; Zhang, Yujia. 2006. Mortality of trees in loblolly pine plantations. Gen. Tech. Rep. SRS-92. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 305-309
- Southern pine beetle-induced mortality of pines with natural and artificial red-cockaded woodpecker cavities in Texas
- Documentation and user guides for SPBLOB: a computer simulation model of the join population dynamics for loblolly pine and the southern pine beetle
- Why do populations of southern pine beetle (Coleoptera: Scolytidae) fluctuate?
XML: View XML