scholarly journals Bark Beetle Population Dynamics in the Anthropocene: Challenges and Solutions

2019 ◽  
Vol 34 (10) ◽  
pp. 914-924 ◽  
Author(s):  
Peter H.W. Biedermann ◽  
Jörg Müller ◽  
Jean-Claude Grégoire ◽  
Axel Gruppe ◽  
Jonas Hagge ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Bark Beetle ◽  
Beetle Population

scholarly journals Bark Beetle Population Dynamics in the Anthropocene: Challenges and Solutions

2018 ◽  
Author(s):  
Peter H. W. Biedermann ◽  
Jean-Claude Grégoire ◽  
Axel Gruppe ◽  
Jonas Hagge ◽  
Almuth Hammerbacher ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Bark Beetle ◽  
Collaborative Research ◽  
Bark Beetles ◽  
Large Scale ◽  
Ips Typographus ◽  
Ecological Framework ◽  
Beetle Population ◽  
Spruce Bark ◽  
Important Pest

Tree-killing bark beetles are the most economically important insects in conifer forests worldwide. Yet  despite >200 years of research, the drivers of population eruptions or crashes are still not fully understood, precluding reliable predictions of the effects of global change on beetle population dynamics and impacts on ecosystems and humans.  We critically analyze potential biotic and abiotic drivers of population dynamics of the European spruce bark beetle (Ips typographus) and present a novel ecological framework that integrates the multiple drivers governing this bark beetle system. We call for large-scale collaborative research efforts to improve our understanding of the population dynamics of this important pest; an approach that might serve as a blueprint for other eruptive forest insects.

Host Suitability, Predation, and Bark Beetle Population Dynamics

1995 ◽  
pp. 339-357 ◽  
Author(s):  
John D. Reeve ◽  
Matthew P. Ayres ◽  
Peter L. Lorio
Keyword(s):  
Population Dynamics ◽  
Bark Beetle ◽  
Host Suitability ◽  
Beetle Population

scholarly journals Spruce Beetle Population Suppression in Northern Utah

2000 ◽  
Vol 15 (3) ◽  
pp. 122-128 ◽  
Author(s):  
B. J. Bentz ◽  
A. S. Munson
Keyword(s):  
Early Detection ◽  
Bark Beetle ◽  
Federal Agencies ◽  
Pheromone Traps ◽  
Field Surveys ◽  
Beetle Population ◽  
Spruce Beetle ◽  
Spruce Stands ◽  
Northern Utah ◽  
Population Suppression

Abstract The spruce beetle is a widely dispersed, native bark beetle that attacks and kills North American spruces. We describe a project that was initiated to suppress an endemic spruce beetle population in an isolated 1000 ac area of spruce in northeastern Utah. Techniques used included baited pheromone traps, selective harvesting and burning of infested trees, and trap trees. Over the 3 yr period of monitoring, the number of standing, currently infested spruce trees was reduced 91%. Field surveys and data trends, in comparison with a nearby spruce beetle population that continued to increase, indicate that the treatments played a major role in decreasing the trend of spruce beetle-infested trees during the study period. This combination of suppression techniques was successful due to the isolated nature of the spruce stands, early detection of the beetle population, accessibility of the stands, and coordinated efforts of local, state, and federal agencies. West. J. Appl. For. 15(3):122-128.

scholarly journals Lightning Damage Facilitates Beetle Colonization of Tropical Trees

2020 ◽  
Author(s):  
Brady P Parlato ◽  
Evan M Gora ◽  
Stephen P Yanoviak
Keyword(s):  
Population Dynamics ◽  
Tropical Forest ◽  
Forest Ecosystems ◽  
Tropical Trees ◽  
Pine Forests ◽  
Forest Trees ◽  
Beetle Population ◽  
Tree Diameter ◽  
Crown Dieback ◽  
The Relationship

Abstract Lightning is a common agent of disturbance in many forest ecosystems. Lightning-damaged trees are a potentially important resource for beetles, but most evidence for this association is limited to temperate pine forests. Here, we evaluated the relationship between lightning damage and beetle colonization of tropical trees. We recorded the number of beetle holes on the trunks of trees from 10 strike sites (n = 173 lightning-damaged trees) and 10 matching control sites (n = 137 control trees) in Panama. The trunks of lightning-struck trees had 370% more beetle holes than control trees. The abundance of beetle holes increased with increasing total crown dieback among both control and lightning-damaged trees, and with larger tree diameter among lightning-struck trees. Beetle holes also were more abundant in trunk sections of lightning-damaged trees located directly below a damaged section of the crown. The results of this study suggest that lightning damage facilitates beetle colonization in tropical forest trees and provide a basis for investigations of the effects of lightning-caused disturbance on beetle population dynamics and assemblage structure.

TEMPERATURE INDUCED VARIATION IN THE RATES OF REPRODUCTIVE PROCESSES IN DENDROCTONUS RUFIPENNIS (COLEOPTERA: SCOLYTIDAE): A NEW APPROACH TO DETECTING CHANGES IN POPULATION QUALITY

1979 ◽  
Vol 111 (9) ◽  
pp. 1069-1078 ◽  
Author(s):  
T.S. Sahota ◽  
A.J. Thomson
Keyword(s):  
Deposition Rate ◽  
Bark Beetle ◽  
Dendroctonus Rufipennis ◽  
New Approach ◽  
Beetle Population ◽  
Insect Populations ◽  
Induced Variation ◽  
Reproductive Processes ◽  
Different Levels ◽  
Population Quality

AbstractTo discover measurable parameters for detecting quality differences (with respect to reproduction) in insect populations, variations in temperature were utilized to obtain manifestation of quality at different levels. Rates of reproductive and associated processes such as yolk deposition, gallery excavation, and oviposition were measured in Dendroctonus rufipennis (Kirby) at four temperatures. Information presented here allows an estimation of D. rufipennis reproduction as affected by temperature. Among the various parameters measured the length of initial egg-free gallery and the number of eggs/unit productive gallery length and yolk deposition rate could be used to discriminate bark-beetle population quality. Rates of yolk deposition appeared most useful and widely applicable for this purpose.

scholarly journals Ipid bark beetle population assessment and threats to weaken pine stands in Central Russia

2021 ◽  
Vol 6 (6) ◽  
pp. 89-97
Author(s):  
A.A. Sobolev ◽  
◽  
U.S. Shipinskaya ◽  
Keyword(s):  
Bark Beetle ◽  
Forest Health ◽  
Weather Conditions ◽  
Pine Plantations ◽  
Health State ◽  
Beetle Population ◽  
Central Russia ◽  
Optimal Period ◽  
Mass Reproduction ◽  
Favorable Weather

The data on the ipid bark beetle population growth in pine plantations of Central Russia in 2020 was recorded. The formation of favorable weather conditions for the development of this depredator in some regions was recorded, which greatly influenced the successful development of the insect population in plantations, in particular in the Pskov, Vladimir, Moscow, Bryansk, Lipetsk, and Ryazan regions. In some areas, a medium and low spread of the bark beetle was revealed. The influence of meteorological conditions on the flight activity of the insect and the probability of the mass reproduction foci formation under the 2020 weather conditions were analyzed. The results of the study formed the basis for the forecast preparation of the sanitary and forest health state. It is recommended to use the materials of the article to determine the optimal period for carrying out measures to protect pine plantations from the ipid bark beetle.

scholarly journals Using Aggregation and Antiaggregation Pheromones of the Douglas-Fir Beetle to Produce Snags for Wildlife Habitat

1997 ◽  
Vol 12 (2) ◽  
pp. 52-54 ◽  
Author(s):  
Darrell W. Ross ◽  
Christine G. Niwa
Keyword(s):  
Bark Beetle ◽  
Douglas Fir ◽  
Wildlife Habitat ◽  
Population Densities ◽  
Beetle Population ◽  
Antiaggregation Pheromone ◽  
One Year

Abstract Pheromone baits for the Douglas-fir beetle were applied alone and in combination with the antiaggregation pheromone, 3-methylcyclohex-2-en-1-one (MCH), to test potential treatments for creating snags to improve wildlife habitat. All baited trees were attacked by beetles following both treatments. However, more unbaited trees were attacked on plots without MCH than on plots with MCH. One year after treatment, more of the attacked trees were dead on plots without MCH than on plots with MCH. Bark beetle pheromones can be used effectively to create snags for improving wildlife habitat, but to achieve specific objectives treatments must be prescribed based on knowledge of the expected beetle population densities. West. J. Appl. For. 12(2):00-00.

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