Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests
Insects respond to changes in microhabitat caused by canopy disturbance, and thus can be used to examine the ecological impacts of harvesting. Single-tree selection harvesting is the most common silvicultural system used to emulate local small-scale natural disturbance and maintain uneven-aged fores...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_1007662X_v23_n2_p275_Smith |
| Aporte de: |
| id |
todo:paper_1007662X_v23_n2_p275_Smith |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_1007662X_v23_n2_p275_Smith2023-10-03T15:55:48Z Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests Smith, S.M. Islam, N. Bellocq, M.I. canopy insects forest management high-taxon level insect communities insect conservation Jack pine forests selection harvesting abundance canopy conservation management disturbance ecological impact forest management harvesting microhabitat parasitoid saproxylic organism silviculture species richness taxonomy temperate forest understory wasp Arthropoda Braconidae Diptera Hexapoda Hymenoptera Pinus banksiana Insects respond to changes in microhabitat caused by canopy disturbance, and thus can be used to examine the ecological impacts of harvesting. Single-tree selection harvesting is the most common silvicultural system used to emulate local small-scale natural disturbance and maintain uneven-aged forest structure in temperate forests. Here, we test for differences in richness, abundance, and composition of hymenopteran and saproxylic insect assemblages at four different taxon levels (selected insect orders; and all hymenopteran families, and braconid subfamilies and morphospecies) between the canopy and understory of unharvested and single-tree selection harvested sites in a northern temperate forest from central Canada. Harvesting had no effect on insect assemblage richness, composition or abundance at the three highest taxon levels (order, family and subfamily). Similarly, richness and abundance at the lowest-taxon level (braconid morphospecies) were similar, although composition differed slightly between unharvested and harvested stands. Insect assemblages were vertically stratified, with generally higher abundance (for Diptera, Hymenoptera, some hymenopteran families and braconid subfamilies) and richness (for braconid morphospecies) in the understory than the canopy. In particular, composition of the braconid morphospecies assemblage showed relatively low similarity between the understory and canopy. Single-tree selection harvesting appears to influence wood-associated insect taxa only subtly through small changes in community composition at the lowest taxon level, and thus is recommended as a conservative approach for managing these northern temperate forests. © 2012 Northeast Forestry University and Springer-Verlag Berlin Heidelberg. Fil:Bellocq, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1007662X_v23_n2_p275_Smith |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
canopy insects forest management high-taxon level insect communities insect conservation Jack pine forests selection harvesting abundance canopy conservation management disturbance ecological impact forest management harvesting microhabitat parasitoid saproxylic organism silviculture species richness taxonomy temperate forest understory wasp Arthropoda Braconidae Diptera Hexapoda Hymenoptera Pinus banksiana |
| spellingShingle |
canopy insects forest management high-taxon level insect communities insect conservation Jack pine forests selection harvesting abundance canopy conservation management disturbance ecological impact forest management harvesting microhabitat parasitoid saproxylic organism silviculture species richness taxonomy temperate forest understory wasp Arthropoda Braconidae Diptera Hexapoda Hymenoptera Pinus banksiana Smith, S.M. Islam, N. Bellocq, M.I. Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| topic_facet |
canopy insects forest management high-taxon level insect communities insect conservation Jack pine forests selection harvesting abundance canopy conservation management disturbance ecological impact forest management harvesting microhabitat parasitoid saproxylic organism silviculture species richness taxonomy temperate forest understory wasp Arthropoda Braconidae Diptera Hexapoda Hymenoptera Pinus banksiana |
| description |
Insects respond to changes in microhabitat caused by canopy disturbance, and thus can be used to examine the ecological impacts of harvesting. Single-tree selection harvesting is the most common silvicultural system used to emulate local small-scale natural disturbance and maintain uneven-aged forest structure in temperate forests. Here, we test for differences in richness, abundance, and composition of hymenopteran and saproxylic insect assemblages at four different taxon levels (selected insect orders; and all hymenopteran families, and braconid subfamilies and morphospecies) between the canopy and understory of unharvested and single-tree selection harvested sites in a northern temperate forest from central Canada. Harvesting had no effect on insect assemblage richness, composition or abundance at the three highest taxon levels (order, family and subfamily). Similarly, richness and abundance at the lowest-taxon level (braconid morphospecies) were similar, although composition differed slightly between unharvested and harvested stands. Insect assemblages were vertically stratified, with generally higher abundance (for Diptera, Hymenoptera, some hymenopteran families and braconid subfamilies) and richness (for braconid morphospecies) in the understory than the canopy. In particular, composition of the braconid morphospecies assemblage showed relatively low similarity between the understory and canopy. Single-tree selection harvesting appears to influence wood-associated insect taxa only subtly through small changes in community composition at the lowest taxon level, and thus is recommended as a conservative approach for managing these northern temperate forests. © 2012 Northeast Forestry University and Springer-Verlag Berlin Heidelberg. |
| format |
JOUR |
| author |
Smith, S.M. Islam, N. Bellocq, M.I. |
| author_facet |
Smith, S.M. Islam, N. Bellocq, M.I. |
| author_sort |
Smith, S.M. |
| title |
Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| title_short |
Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| title_full |
Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| title_fullStr |
Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| title_full_unstemmed |
Effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| title_sort |
effects of single-tree selection harvesting on hymenopteran and saproxylic insect assemblages in the canopy and understory of northern temperate forests |
| url |
http://hdl.handle.net/20.500.12110/paper_1007662X_v23_n2_p275_Smith |
| work_keys_str_mv |
AT smithsm effectsofsingletreeselectionharvestingonhymenopteranandsaproxylicinsectassemblagesinthecanopyandunderstoryofnortherntemperateforests AT islamn effectsofsingletreeselectionharvestingonhymenopteranandsaproxylicinsectassemblagesinthecanopyandunderstoryofnortherntemperateforests AT bellocqmi effectsofsingletreeselectionharvestingonhymenopteranandsaproxylicinsectassemblagesinthecanopyandunderstoryofnortherntemperateforests |
| _version_ |
1807321111409459200 |