Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?

Multi-cohort management (MCM) that retains a range of stand structures (age and size class) has been proposed to emulate natural disturbance and improve management in the Nearctic boreal forest. Although MCM forests contain both single- and multi-aged stands of mixed tree sizes, little is known abou...

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Autores principales:	Barkley, E.P., Malcolm, J.R., Smith, S.M., Bellocq, M.I.
Formato:	JOUR
Materias:	Biodiversity conservation Boreal forest Carabidae Forest structure Ground beetles Multi-cohort management Tree diameter distribution abundance beetle biodiversity boreal forest complexity environmental disturbance forest ecosystem Nearctic Region species diversity species richness stand structure woody debris Canada Coleoptera
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_1007662X_v27_n5_p1191_Barkley
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_1007662X_v27_n5_p1191_Barkley
record_format	dspace
spelling	todo:paper_1007662X_v27_n5_p1191_Barkley2023-10-03T15:55:48Z Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest? Barkley, E.P. Malcolm, J.R. Smith, S.M. Bellocq, M.I. Biodiversity conservation Boreal forest Carabidae Forest structure Ground beetles Multi-cohort management Tree diameter distribution abundance beetle biodiversity boreal forest complexity environmental disturbance forest ecosystem Nearctic Region species diversity species richness stand structure woody debris Canada Carabidae Coleoptera Multi-cohort management (MCM) that retains a range of stand structures (age and size class) has been proposed to emulate natural disturbance and improve management in the Nearctic boreal forest. Although MCM forests contain both single- and multi-aged stands of mixed tree sizes, little is known about how variable stand structure affects associated fauna and biodiversity. Here, we examine the relationship between ground beetle (Coleoptera, Carabidae) communities and stand characteristics across a range of forest structure (=cohort classes). Given that MCM classes are defined by the distribution of their tree–stem diameters, we ask whether parameters associated with these distributions (Weibull) could explain observed variation in carabid communities, and if so, how this compares to traditional habitat variables such as stand age, foliage complexity or volume of downed woody debris. We sampled carabids using weekly pitfall collections and compared these with structural habitat variables across a range of cohort classes (stand structure and age since disturbance) in 18 sites of upland mixed boreal forests from central Canada. Results showed that richness and diversity of carabid communities were similar among cohort classes. Weibull parameters from the diameter distribution of all stems were the strongest predictors of variation in carabid communities among sites, but vertical foliage complexity, understory thickness, and percentage of deciduous composition were also significant. The abundance of several carabid forest specialists was strongly correlated with tree canopy height, the presence of large trees, and high vertical foliage complexity. Our results demonstrate that variable forest structure, as expected under MCM, may be useful in retaining the natural range of ground beetle species across the central Nearctic boreal forest. © 2016, 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_v27_n5_p1191_Barkley
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Biodiversity conservation Boreal forest Carabidae Forest structure Ground beetles Multi-cohort management Tree diameter distribution abundance beetle biodiversity boreal forest complexity environmental disturbance forest ecosystem Nearctic Region species diversity species richness stand structure woody debris Canada Carabidae Coleoptera
spellingShingle	Biodiversity conservation Boreal forest Carabidae Forest structure Ground beetles Multi-cohort management Tree diameter distribution abundance beetle biodiversity boreal forest complexity environmental disturbance forest ecosystem Nearctic Region species diversity species richness stand structure woody debris Canada Carabidae Coleoptera Barkley, E.P. Malcolm, J.R. Smith, S.M. Bellocq, M.I. Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?
topic_facet	Biodiversity conservation Boreal forest Carabidae Forest structure Ground beetles Multi-cohort management Tree diameter distribution abundance beetle biodiversity boreal forest complexity environmental disturbance forest ecosystem Nearctic Region species diversity species richness stand structure woody debris Canada Carabidae Coleoptera
description	Multi-cohort management (MCM) that retains a range of stand structures (age and size class) has been proposed to emulate natural disturbance and improve management in the Nearctic boreal forest. Although MCM forests contain both single- and multi-aged stands of mixed tree sizes, little is known about how variable stand structure affects associated fauna and biodiversity. Here, we examine the relationship between ground beetle (Coleoptera, Carabidae) communities and stand characteristics across a range of forest structure (=cohort classes). Given that MCM classes are defined by the distribution of their tree–stem diameters, we ask whether parameters associated with these distributions (Weibull) could explain observed variation in carabid communities, and if so, how this compares to traditional habitat variables such as stand age, foliage complexity or volume of downed woody debris. We sampled carabids using weekly pitfall collections and compared these with structural habitat variables across a range of cohort classes (stand structure and age since disturbance) in 18 sites of upland mixed boreal forests from central Canada. Results showed that richness and diversity of carabid communities were similar among cohort classes. Weibull parameters from the diameter distribution of all stems were the strongest predictors of variation in carabid communities among sites, but vertical foliage complexity, understory thickness, and percentage of deciduous composition were also significant. The abundance of several carabid forest specialists was strongly correlated with tree canopy height, the presence of large trees, and high vertical foliage complexity. Our results demonstrate that variable forest structure, as expected under MCM, may be useful in retaining the natural range of ground beetle species across the central Nearctic boreal forest. © 2016, Northeast Forestry University and Springer-Verlag Berlin Heidelberg.
format	JOUR
author	Barkley, E.P. Malcolm, J.R. Smith, S.M. Bellocq, M.I.
author_facet	Barkley, E.P. Malcolm, J.R. Smith, S.M. Bellocq, M.I.
author_sort	Barkley, E.P.
title	Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?
title_short	Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?
title_full	Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?
title_fullStr	Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?
title_full_unstemmed	Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?
title_sort	does variable stand structure associated with multi-cohort forests support diversity of ground beetle (coleoptera, carabidae) communities in the central nearctic boreal forest?
url	http://hdl.handle.net/20.500.12110/paper_1007662X_v27_n5_p1191_Barkley
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Does variable stand structure associated with multi-cohort forests support diversity of ground beetle (Coleoptera, Carabidae) communities in the central Nearctic boreal forest?

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