Substrate requirements of red-listed saproxylic invertebrates in Sweden

Jonsell, Mats; Weslien, Jan; Ehnström, Bengt

doi:10.1023/a:1008888319031

Cited by 416 publications

(211 citation statements)

References 15 publications

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“…Camponotus herculeanus showed slight reduction (5% odds ratio) in the probability of cohabiting with other species at the 50-m 2 sampling scale and only F. aserva indicated a strong negative response (59% odd ratio). It would be expected that there would be reduced odds of locating most ant species within the same 50-m 2 sampling unit of other species, if competitive exclusion was structuring the community, as has been documented in other ant communities [60][61][62]. This finding, in our study, would suggest that allospecific competition was not a significant factor, at least not at this scale.…”

Section: Discussionsupporting

confidence: 58%

“…Although the CWD volumes encountered in our study appear adequate for use by the ant fauna, concerns may arise from any significant reduction in post-harvest CWD volumes. Sweden, with much lower post-harvest volumes as compared to BC, has already identified over 500 woody debris dependent invertebrates that are at risk of extirpation [62]. Desire to reduce post-harvest CWD volumes, and to increase wood fiber availability to emerging bio-energy corporations, should be considered with extreme caution if we want to protect the organisms dependent upon this resource and the ecological processes to which they are fundamental.…”

Section: Discussionmentioning

confidence: 99%

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Critical Habitat Elements, with an Emphasis on Coarse Woody Debris, Associated with Ant Presence or Absence in the Moist Cold Sub-Boreal Forests of the Interior of British Columbia

Higgins

Gillingham

Lindgren

2017

Forests

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Given both the ubiquity and ecological roles described for ants in British Columbia, an understanding of the habitat elements critical to predicting their presence is desirable. We used logistic regression to model the presence and absence of ants in sub-boreal lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Watson) forests of west-central British Columbia (BC). Methodological emphasis was placed on the association between ants and coarse woody debris (CWD) because of a high degree of utilization of this resource for nesting. Five species of ants, Camponotus herculeanus (L.), Formica aserva Forel, F. neorufibarbis Emery, Leptothorax muscorum (Nylander), and Myrmica alaskensis Wheeler, comprised approximately 90% of all captures in samples of CWD within five seral ages (2-3, 8-10, 13-15, 23-25 years post-harvest, and non-harvested stands). Seral age, presence of other ant colonies of the same species, decay class of CWD, its surface area, and whether the wood was downed woody debris (DWD) or a stump, were significant variables affecting ant presence or absence. These results are explained in the context of ant species autecology as it relates to living in cool climates.

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Section: Discussionsupporting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Critical Habitat Elements, with an Emphasis on Coarse Woody Debris, Associated with Ant Presence or Absence in the Moist Cold Sub-Boreal Forests of the Interior of British Columbia

Higgins

Gillingham

Lindgren

2017

Forests

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“…Although most of the BWBB taxa preferred thicker LRs, two taxa were associated with thin LRs, and these associations with thin LRs were mostly weaker than those associated with thick LRs. However, the larger validity of this pattern is uncertain because whereas several studies conducted on saproxylic beetles found that higher species richness was associated with coarser, dead wood (Jonsell et al 1998, Grove 2002, Jonsell et al 2007), other researchers found more species associated with dead wood of small diameter (Schiegg 2001, Jonsell 2008b. LR deposit type also signifi cantly affected the species composition of the BWBB assemblages, although this parameter had less effect than the other factors (Table 1).…”

Section: Discussionmentioning

confidence: 98%

Bark- and wood-boring beetles on Scots pine logging residues from final felling: effects of felling date, deposition location and diameter of logging residues

Foit

2015

Ann. For. Res.

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Foit J., 2015. Bark-and wood-boring beetles on Scots pine logging residues from fi nal felling: effects of felling date, deposition location and diameter of logging residues. Ann. For. Res. 58(1): 67-79.Abstract. To reduce the risk of bark-and wood-boring beetle pests, the extensive removal of logging residues is conducted in forests; however, this practice can lead to a loss of saproxylic insect diversity. Thus, finding a better pest management strategy is needed and requires additional information on the actual effects of various, differently treated logging residues for pest multiplication. In the present study, a total of 2,160 fragments of Scots pine (Pinus sylvestris L.) logging residues generated during final felling in a single stand in the Drahanská Highlands in the Czech Republic were examined for bark-and wood-boring beetles. The felling occurred on four dates in 2006 (in February, May, August and November). The logging residues from each felling were left scattered on the clear-cut area or were gathered into piles. The fauna inhabiting the logging residues were investigated by peeling off the bark during the first six months of the vegetative period following the felling. The logging residues hosted species-rich assemblages of bark-and wood-boring beetles (25 species were identified). Beetle occurrence was significantly affected by felling date, logging residue type (trunk fragment or branch and branch thinner or thicker than 1 cm), diameter and the manner in which the logging residues were deposited (freely scattered, top pile layer, or bottom pile layer). The Scots pine logging residues were a substrate for the significant multiplication of several potentially significant pests (particularly, Pityogenes chalcographus [Linnaeus], Ips acuminatus [Gyllenhal] and Pityophthorus pityographus [Ratzeburg]). The results indicated that the risk of pest reproduction can be minimised by felling the trees in August (and probably also September and October). For I. acuminatus and P. pityographus, the risk can be minimised by gathering the logging residues into piles.

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“…The richness of tree species in temperate forests is a necessary consideration for snag management. Assemblages of saproxylic beetles vary among the species of snags (Ulyshen and Hanula 2009), and almost all tree genera have some monophagous species of saproxylic invertebrates (Jonsell et al 1998). Therefore, we should retain snags of diverse tree species, and they should be conserved according to the probabilities that a dead tree will become a snag and snag longevity as influenced by TSD and DBH effects.…”

Section: Management Implicationsmentioning

confidence: 99%

“…The duration of time from recruitment to falling down, which is often referred to as snag longevity, not only determines snag abundance but also is closely related to the quality of the habitats provided to species associated with snags. The assemblage of species associated with snags varies by several factors, including tree species, diameter, sun exposure, burn treatment, and decay condition of snags (Drapeau et al 2009;Gibb et al 2006;Jonsell et al 1998;Saint-Germain et al 2007;Ulyshen and Hanula 2009). Snag longevity influences the succession of the species assemblages through progression of the decay stage, and the process is usually categorized into five or more stages (Stokland et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Do larger snags stand longer?—snag longevity in mixed conifer–hardwood forests in Hokkaido, Japan

Onodera

Tokuda

2015

Annals of Forest Science

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Abstract& Key message More than half of the dead trees fell down within decade. Besides, DBH effect on snag longevity varied by tree species and was not detected for some species. Management of long-lived snags in temperate mixed forests should be reconsidered. & Context Snags (standing dead trees) provide essential habitats for many species. Those with large diameter at breast height (DBH) are prioritized for retention; one of the reasons is that snag longevity (recruitment to falling down) increases with increasing DBH in conifer-dominated forests. Despite its importance, the DBH effect on hardwood snags is inadequately understood. & Aims The aim of this study is to investigate whether and how the DBH effect varies by tree species in mixed coniferhardwood forests. & Methods We checked the current status (standing or falling) of dead trees that had been recorded in 37 permanent plots and applied a generalized linear mixed model. We used tree species, time since death, DBH, and interaction terms as variables. & Results Half of the dead trees with a DBH of 25 cm were estimated to have fallen down within 1-6 years for most of the species. While snag longevity increased with increasing DBH in Abies sachalinensis and Phellodendron amurense, we detected no such effect in Picea and three hardwood species. & Conclusions For highly decayed or long-lived snags, retaining large snags is not always effective. Managers of species-rich mixed forests should consider the variability of the DBH effects and management of dead wood before and after tree mortality.

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Substrate requirements of red-listed saproxylic invertebrates in Sweden

Cited by 416 publications

References 15 publications

Critical Habitat Elements, with an Emphasis on Coarse Woody Debris, Associated with Ant Presence or Absence in the Moist Cold Sub-Boreal Forests of the Interior of British Columbia

Critical Habitat Elements, with an Emphasis on Coarse Woody Debris, Associated with Ant Presence or Absence in the Moist Cold Sub-Boreal Forests of the Interior of British Columbia

Bark- and wood-boring beetles on Scots pine logging residues from final felling: effects of felling date, deposition location and diameter of logging residues

Do larger snags stand longer?—snag longevity in mixed conifer–hardwood forests in Hokkaido, Japan

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