Southern Pine Beetle Infestation Affects Esthetic Values of Forest Landscapes

1979 ◽  
Vol 3 (2) ◽  
pp. 48-49 ◽  
Author(s):  
Gregory J. Buhyoff ◽  
W. A. Leuschner ◽  
J. D. Wellman
Keyword(s):  
Southern Pine Beetle ◽  
Insect Damage ◽  
Blue Ridge ◽  
Southern Pine ◽  
Forested Area ◽  
Pine Beetle ◽  
Management Recommendations ◽  
Blue Ridge Parkway

Abstract Viewers preferences for forest landscapes suffering from varying stages of southern pine beetle (SPB) infestation were measured. Subjects with different forestry backgrounds evaluated slides of SPB-damaged areas along the Blue Ridge Parkway. Half were told they were viewing SPB damage; half were not. Results indicate that people prefer undamaged landscape, preferences do not differ according to forestry backgrounds, foreknowledge of SPB damage influenced viewers negatively, and most esthetic impact occurs before 10 percent of the forested area shows insect damage. We present management recommendations based on these findings.

scholarly journals Contrasting Competitor and Predator Responses to a Short-Lived Southern Pine Beetle Outbreak: A Case Study

2020 ◽  
Author(s):  
Stephen R Clarke ◽  
Jessica Hartshorn
Keyword(s):  
Natural Enemy ◽  
Bark Beetles ◽  
Southern Pine Beetle ◽  
National Forest ◽  
Population Fluctuations ◽  
Thanasimus Dubius ◽  
Southern Pine ◽  
Widespread Application ◽  
Pine Beetle

Abstract The southern pine beetle (SPB) Dendroctonus frontalis Zimmermann, is the most important insect pest of pines in the southeastern United States, with outbreaks often resulting in thousands of hectares of pine mortality. Natural enemies and competitors have been cited as significant regulators of SPB populations and, therefore, outbreaks. A recent outbreak on the Homochitto National Forest (NF) in Mississippi provided an opportunity to undertake a case study comparing population fluctuations of SPB, its major predator Thanasimus dubius, and its competitors, Ips bark beetles. Trap catches of all three were tracked through the course of the outbreak on the Homochitto NF as well as in two other forests with low or no SPB activity. The number of predators collected initially increased on the Homochitto NF in response to the SPB outbreak, but their impact on reducing infestation numbers was unclear. Numbers of Ips trapped were similar across all three forests, indicating that other factors were regulating SPB populations. The outbreak only lasted a single year, and its brevity likely limited the availability of host resources for natural enemy and competitor populations. Additional studies are warranted to explore the mechanisms affecting the extent and duration of SPB outbreaks, such as active forest management. Study Implications: The widespread application of cut-and-leave treatments during a short duration southern pine beetle (SPB) outbreak on the Homochitto National Forest did not result in immediate increased collections of Ips bark beetles, competitors of SPB. Similar population trends of Ips bark beetles in areas with and without SPB infestations suggest that other factors, such as climate, regulate population numbers. Low numbers of the main SPB predator, Thanasimus dubius, immediately preceded an outbreak, and trap collections increased after outbreak onset, reaffirming the importance of this natural enemy in SPB population fluctuations.

Southern pine beetle: Enhancement or inhibition of aggregation response mediated by enantiomers of endo-brevicomin

1985 ◽  
Vol 72 (2) ◽  
pp. 99-100 ◽  
Author(s):  
J. P. Vit� ◽  
R. F. Billings ◽  
C. W. Ware ◽  
K. Mori
Keyword(s):  
Southern Pine Beetle ◽  
Southern Pine ◽  
Aggregation Response ◽  
Pine Beetle
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