Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale
Invasive insect pests are responsible for important damage to native and plantation forests, when population outbreaks occur. Understanding the spatial pattern of attacks by forest pest populations is essential to improve our understanding of insect population dynamics and for predicting attack risk...
| Autores principales: | , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1267 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0127099 |
| _version_ | 1855034775805362176 |
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| author | Lantschner, Maria Victoria Corley, Juan Carlos |
| author_browse | Corley, Juan Carlos Lantschner, Maria Victoria |
| author_facet | Lantschner, Maria Victoria Corley, Juan Carlos |
| author_sort | Lantschner, Maria Victoria |
| collection | INTA Digital |
| description | Invasive insect pests are responsible for important damage to native and plantation forests, when population outbreaks occur. Understanding the spatial pattern of attacks by forest pest populations is essential to improve our understanding of insect population dynamics and for predicting attack risk by invasives or planning pest management strategies. The woodwasp Sirex noctilio is an invasive woodwasp that has become probably the most important pest of pine plantations in the Southern Hemisphere. Our aim was to study the spatial dynamics of S. noctilio populations in Southern Argentina. Specifically we describe: (1) the spatial patterns of S. noctilio outbreaks and their relation with environmental factors at a landscape scale; and (2) characterize the spatial pattern of attacked trees at the stand scale. We surveyed the spatial distribution of S. noctilio outbreaks in three pine plantation landscapes, and we assessed potential associations with topographic variables, habitat characteristics, and distance to other outbreaks. We also looked at the spatial distribution of attacked trees in 20 stands with different levels of infestation, and assessed the relationship of attacks with stand composition and management. We found that the spatial pattern of pine stands with S. noctilio outbreaks at the landscape scale is influenced mainly by the host species present, slope aspect, and distance to other outbreaks. At a stand scale, there is strong aggregation of attacked trees in stands with intermediate infestation levels, and the degree of attacks is influenced by host species and plantation management. We conclude that the pattern of S. noctilio damage at different spatial scales is influenced by a combination of both inherent population dynamics and the underlying patterns of environmental factors. Our results have important implications for the understanding and management of invasive insect outbreaks in forest systems. |
| format | info:ar-repo/semantics/artículo |
| id | INTA1267 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA12672018-01-17T17:16:27Z Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale Lantschner, Maria Victoria Corley, Juan Carlos Sirex Insectos Dañinos Paisaje Distribución Espacial Pest Insects Landscape Spatial Distribution Sirex Noctilio Stand Scale Invasive insect pests are responsible for important damage to native and plantation forests, when population outbreaks occur. Understanding the spatial pattern of attacks by forest pest populations is essential to improve our understanding of insect population dynamics and for predicting attack risk by invasives or planning pest management strategies. The woodwasp Sirex noctilio is an invasive woodwasp that has become probably the most important pest of pine plantations in the Southern Hemisphere. Our aim was to study the spatial dynamics of S. noctilio populations in Southern Argentina. Specifically we describe: (1) the spatial patterns of S. noctilio outbreaks and their relation with environmental factors at a landscape scale; and (2) characterize the spatial pattern of attacked trees at the stand scale. We surveyed the spatial distribution of S. noctilio outbreaks in three pine plantation landscapes, and we assessed potential associations with topographic variables, habitat characteristics, and distance to other outbreaks. We also looked at the spatial distribution of attacked trees in 20 stands with different levels of infestation, and assessed the relationship of attacks with stand composition and management. We found that the spatial pattern of pine stands with S. noctilio outbreaks at the landscape scale is influenced mainly by the host species present, slope aspect, and distance to other outbreaks. At a stand scale, there is strong aggregation of attacked trees in stands with intermediate infestation levels, and the degree of attacks is influenced by host species and plantation management. We conclude that the pattern of S. noctilio damage at different spatial scales is influenced by a combination of both inherent population dynamics and the underlying patterns of environmental factors. Our results have important implications for the understanding and management of invasive insect outbreaks in forest systems. Fil: Lantschner, Maria Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Ecología de Poblaciones de Insectos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Corley, Juan Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Ecología de Poblaciones de Insectos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2017-09-20T14:17:32Z 2017-09-20T14:17:32Z 2015-05-18 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1267 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0127099 1932-6203 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Plos one 10 (5) : e0127099. (2015) |
| spellingShingle | Sirex Insectos Dañinos Paisaje Distribución Espacial Pest Insects Landscape Spatial Distribution Sirex Noctilio Stand Scale Lantschner, Maria Victoria Corley, Juan Carlos Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale |
| title | Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale |
| title_full | Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale |
| title_fullStr | Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale |
| title_full_unstemmed | Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale |
| title_short | Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale |
| title_sort | spatial pattern of attacks of the invasive woodwasp sirex noctilio at landscape and stand scale |
| topic | Sirex Insectos Dañinos Paisaje Distribución Espacial Pest Insects Landscape Spatial Distribution Sirex Noctilio Stand Scale |
| url | http://hdl.handle.net/20.500.12123/1267 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0127099 |
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