Conservation of beetles in boreal pine forests: the effects of forest age and naturalness on species assemblages

Similä, Maarit; Kouki, Jari; Martikainen, Petri; Uotila, Anneli

doi:10.1016/s0006-3207(01)00225-7

Cited by 104 publications

(86 citation statements)

References 17 publications

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“…Flight-intercept traps and pitfall traps have been widely employed in many recent studies in boreal forests (e.g. Muona & Rutanen, 1994;Siitonen, 1994;Spence & Niemelä, 1994;Niemelä et al, 1996;Økland et al, 1996;Martikainen, 2001;Koivula et al, 2002;Similä et al, 2002;Lindhe & Lindelöw, 2004).…”

Section: Introductionmentioning

confidence: 99%

A comparison of three trapping methods used to survey forest-dwelling Coleoptera

Hyvärinen¹,

Kouki²,

Martikainen³

2006

Eur. J. Entomol.

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Abstract. Sampling of insect communities is very challenging and for reliable interpretation of results the effects of different sampling protocols and data processing on the results need to be fully understood. We compared three different commonly used methods for sampling forest beetles, freely hanging flight-intercept (window) traps (FWT), flight-intercept traps attached to trunks (TWT) and pitfall traps placed in the ground (PFT), in Scots pine dominated boreal forests in eastern Finland. Using altogether 960 traps, forming 576 sub-samples, at 24 study sites, 59760 beetles belonging to 814 species were collected over a period of a month. All of the material was identified to species, with the exception of a few species pairs, to obtain representative data for analyses. Four partly overlapping groups were used in the analyses: (1) all, (2) saproxylic, (3) rare and (4) red-listed species. In terms of the number of species collected TWTs were the most effective for all species groups and the rarer species the species group composed of (groups 1-2-3-4) the larger were the differences between the trap types. In particular, the TWTs caught most red-listed species. However, when sample sizes were standardized FWTs and TWTs caught similar number of species of all species groups. PFTs caught fewer species of all species groups, whether the sample sizes were standardized or not. In boreal forests they seem to be unsuitable for sampling saproxylic, rare and red-listed species. However, the PFTs clearly sampled different parts of species assemblages than the window traps and can be considered as a supplementary method. The abundance distribution of saproxylic species was truncated lognormal in TWT and pooled material, whereas unclassified material failed to reveal lognormal distribution in all the trap types and pooled material. The results show that even in boreal forests sample sizes of at least thousands, preferably tens of thousands of individuals, collected by a high number of traps are needed for community level studies. Relevant ecological classification of material is also very important for reliable comparisons. Differences in the performance of trap types should be considered when designing a study, and in particular when evaluating the results.

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Section: Introductionmentioning

confidence: 99%

A comparison of three trapping methods used to survey forest-dwelling Coleoptera

Hyvärinen¹,

Kouki²,

Martikainen³

2006

Eur. J. Entomol.

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“…For example, an average of 60-90 m 3 ha -1 of CWD occurs in the natural forests of southern Finland (Siitonen 2001), while in managed stands the average volume of deadwood varies from 1.2 to 2.9 m 3 ha -1 only (Tomppo et al 1999). Earlysuccessional postfire stages with high volumes of deadwood are also suitable habitat for some species that were previously considered to be restricted to old-growth forests (Kouki et al 2001, Similä et al 2002. However, earlysuccessional stages with largediameter deadwood are extremely rare in managed landscapes.…”

Section: Restoration In Relation To Disturbance and Successional Theorymentioning

confidence: 99%

“…Such restoration operations are needed to attain a better balance between the economic, social and ecological dimensions of sustainable forestry (Fries et al 1997, Burton et al 2003, Hyvärinen et al 2005. However, despite the increasing concerns of biodiversity loss in Fennoscandian forests (Esseen et al 1992, Granström 2001, Kouki et al 2001, Siitonen 2001, Axelsson et al 2002, Similä et al 2002, Hyvärinen et al 2005, restoration research is still in its infancy and we lack understanding of the ecological efficiency of restoration practices (Hyvärinen et al 2005). …”

Section: Introductionmentioning

confidence: 99%

Ecological restoration of forests in Fennoscandia: defining reference stand structures and immediate effects of restoration

Lilja¹

2006

Diss. For.

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“…Saproxylic beetles are, in large part, responsible for the mechanical breakdown of coarse woody debris (CWD) (Hickin 1963). Th ese beetles also demonstrate sensitivity to timber-harvest practices (Simila et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Th ere are few studies of saproxylic invertebrates in eastern Canada compared to many areas of northern Europe (Jonsell et al 1998;Kaila et al 1997;Kolmstrom and Lumatjarvi 2000;Kouki et al 2000;Martikainen 2001;Martikainen and Kouki 2003;Martikainen et al 2000;Muona 1999;Økland et al 1996;Rainius and Jansson 2002;Siitonen 1994Siitonen , 2001Simila et al 2002Simila et al , 2003Sverdrup-Th ygeson and Ims 2002;Vaisanen et al 1993). Only in the last decade have serious investigations of the Nova Scotia saproxylic fauna been undertaken.…”

Section: Introductionmentioning

confidence: 99%

Saproxylic beetle (Coleoptera) communities and forest management practices in coniferous stands in southwest Nova Scotia, Canada

Dollin¹,

Majka²,

Duinker³

2008

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Old-growth forests in Nova Scotia typically exhibit an uneven-aged, multi-layered stand structure and contain signifi cant amounts of coarse woody debris. Many forest species, including invertebrates, depend in various ways on deadwood substrates. Th e objective of this study was to investigate relationships between forest stand age, silvicultural treatment, dead wood, and invertebrate biodiversity, using saproxylic beetles as an indicator group. Saproxylic beetle communities were also compared in the context of other studies in Nova Scotia. Beetles were gathered using four collection techniques: pitfall traps, funnel traps, sweep-netting, and manual searching. Results show that both stand age and harvest treatment had an eff ect on species richness and species composition. Younger stands had lower species richness and hosted a signifi cantly diff erent suite of species than medium-aged or older ones. Similarly, harvested stands had lower species richness and were host to a signifi cantly diff erent suite of species than unharvested stands. Th e results from the investigation of stand age are of particular interest. Forest management that disregards the dependence of diff erent suites of beetles on forest stands of various ages and compositions, emphasizing even-aged single-species stands, may be harmful to the species diversity of Nova Scotia's forest ecosystems.

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Conservation of beetles in boreal pine forests: the effects of forest age and naturalness on species assemblages

Cited by 104 publications

References 17 publications

A comparison of three trapping methods used to survey forest-dwelling Coleoptera

A comparison of three trapping methods used to survey forest-dwelling Coleoptera

Ecological restoration of forests in Fennoscandia: defining reference stand structures and immediate effects of restoration

Saproxylic beetle (Coleoptera) communities and forest management practices in coniferous stands in southwest Nova Scotia, Canada

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