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Abstract:

Variable retention harvesting (VRH), in which trees are removed at variable intensity and spatial configuration across the landscape, retains greater forest structural heterogeneity than traditional clear-cut harvesting and is being recommended as an alternative for sustainable management of the boreal forest. Little is known about its effects on forest fauna; thus, we studied the influence of one type of VRH (harvesting with advanced regeneration [HARP]) on the Syrphidae (Diptera) community in northern Ontario forests of peatland black spruce (Picea mariana). We examined the effects of varying structural retention (from unharvested through partial retention to clear-cut) on syrphid species richness and abundance, and abundance of functional assemblages. Greater species richness and population abundances were found generally in harvested than in unharvested forests. Overall species richness and the abundance of four species (Platycheirus rosarum, Toxomerus marginatum, Xylota annulifera, and X. tuberculata) and larval predators were all higher in both clear-cut sites and those with structural retention than in unharvested sites. Similarly, overall species richness and the abundance of nine species were higher in clear-cut than in unharvested sites. Species responses are discussed in an ecological context. Differences among the levels of forest retention harvesting were relatively minor compared with those of the clear-cut and unharvested area, suggesting that local habitat characteristics may play a more important role in determining the syrphid community than the landscape configuration. However, a landscape level effect was evident, suggesting that syrphids may be useful in reflecting changes in stand structure at the landscape scale. © 2007 Entomological Society of America.

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Documento: Artículo
Título:Hoverfly (syrphidae) communities respond to varying structural retention after harvesting in Canadian peatland black spruce forests
Autor:Deans, A.M.; Smith, S.M.; Malcolm, J.R.; Crins, W.J.; Bellocq, M.I.
Filiación:Faculty of Forestry, University of Toronto, 33 Willcocks St., Toronto, Ont. M5S 3B3, Canada
Ontario Ministry of Natural Resources, 300 Water St., Peterborough, Ont. K9J 8M5, Canada
Departamento de Ecología, Genètica Y Evolución, FCEN-Universidad de Buenos Aires, Pab 2, Buenos Aires 1428, Argentina
Palabras clave:Boreal forest; Functional assemblages; Species richness; Syrphidae; Variable retention harvesting; abundance; boreal forest; community composition; community response; coniferous forest; fly; harvesting; peatland; species richness; animal; article; Canada; environmental protection; female; fire; fly; forestry; growth, development and aging; male; methodology; physiology; population dynamics; population growth; species difference; spruce; Animals; Conservation of Natural Resources; Diptera; Female; Fires; Forestry; Male; Ontario; Picea; Population Dynamics; Population Growth; Species Specificity; Canada; North America; Diptera; Picea mariana; Platycheirus rosarum; Syrphidae; Toxomerus; Xylota annulifera
Año:2007
Volumen:36
Número:2
Página de inicio:308
Página de fin:318
DOI: http://dx.doi.org/10.1603/0046-225X(2007)36[308:HSCRTV]2.0.CO;2
Título revista:Environmental Entomology
Título revista abreviado:Environ. Entomol.
ISSN:0046225X
CODEN:EVETB
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_0046225X_v36_n2_p308_Deans.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0046225X_v36_n2_p308_Deans

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Citas:

---------- APA ----------
Deans, A.M., Smith, S.M., Malcolm, J.R., Crins, W.J. & Bellocq, M.I. (2007) . Hoverfly (syrphidae) communities respond to varying structural retention after harvesting in Canadian peatland black spruce forests. Environmental Entomology, 36(2), 308-318.
http://dx.doi.org/10.1603/0046-225X(2007)36[308:HSCRTV]2.0.CO;2
---------- CHICAGO ----------
Deans, A.M., Smith, S.M., Malcolm, J.R., Crins, W.J., Bellocq, M.I. "Hoverfly (syrphidae) communities respond to varying structural retention after harvesting in Canadian peatland black spruce forests" . Environmental Entomology 36, no. 2 (2007) : 308-318.
http://dx.doi.org/10.1603/0046-225X(2007)36[308:HSCRTV]2.0.CO;2
---------- MLA ----------
Deans, A.M., Smith, S.M., Malcolm, J.R., Crins, W.J., Bellocq, M.I. "Hoverfly (syrphidae) communities respond to varying structural retention after harvesting in Canadian peatland black spruce forests" . Environmental Entomology, vol. 36, no. 2, 2007, pp. 308-318.
http://dx.doi.org/10.1603/0046-225X(2007)36[308:HSCRTV]2.0.CO;2
---------- VANCOUVER ----------
Deans, A.M., Smith, S.M., Malcolm, J.R., Crins, W.J., Bellocq, M.I. Hoverfly (syrphidae) communities respond to varying structural retention after harvesting in Canadian peatland black spruce forests. Environ. Entomol. 2007;36(2):308-318.
http://dx.doi.org/10.1603/0046-225X(2007)36[308:HSCRTV]2.0.CO;2