Data
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Data
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This report updates a series of similarly titled publications assembled for the Southern Forest Insect Working Group. The first report was assembled by Terry Price and Coleman Doggett and released in 1982. The second edition was released in 1992, where editors Price and Doggett were joined by John M. Pye and Tom P. Holmes. The third edition was released in 1998 with editors Price, Doggett, Pye and Bryan Smith. All three were published by the Georgia Forestry Commission. Each edition reports information on beetle activity originally collected by forest entomologists and other forest health specialists in the National Forest System and the various states of the Southeastern United States. Recent contributors are listed later on this page.
Each successive edition has repeated the information from the previous one and extended it forward. Each effort has offered opportunities to standardize methods and expand on the information presented. For example, the first edition only reported a binary measure of outbreak status, showing counties where populations exceeded one spot per thousand acres of host forest type. The second edition expanded this coding to recognize four categories, based on the number of spots per thousand acres:
This latest edition offers several improvements:
damages - dollar damages are now adjusted to constant dollars using the producer price index for lumber and wood products (more...)
percent of typical harvest - killed sawlog and pulpwood volumes are now expressed relative to annual harvests as reported in Forest Inventory and Analysis Timber Product Output reports (more...)
percent of inventory - downloadable data now expresses killed volumes relative to several measures of state-level inventory: host species trees, host forest types, and total softwood (more...)
spots per thousand - infestation levels are now reported using the continuous measure of spots per thousand, calculated from separately reported state and federal spot counts
host acres - host acres by county are now listed, interpolating acres in the loblolly/shortleaf and oak pine forest types as reported in available FIA surveys; for those states where historical spot data was available, subsequent FIA surveys and newly interpolated acres were used to recalculate spots per thousand acres and outbreak status for the years 1991 to 1996 (more...)
State-level damage numbers and county-level spot counts for the years 1997 through 2004 were collected from either the Southern Region Forest Health Protection's "Annual Insect and Disease Conditions Report" for that year or from the following forest health specialists, who have reviewed all data shown here.
Assembling these data required the assistance of numerous other individuals, including district foresters and analysts. While many remain unnamed, Valli Peacher, Ed Yockey and Wes Nettleton of Forest Health Protection, Southern Region were particularly helpful seeing this update through to completion.
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Forest Economics and Policy |
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USDA Forest Service Southern Research Station |