Snag characteristics and dynamics following natural and artificially induced mortality in a managed loblolly pine forest

Zarnoch, Stanley J.; Vukovich, Mark; Kilgo, John C.; Blake, J. P.

doi:10.1139/cjfr-2012-0453

Cited by 6 publications

(1 citation statement)

References 16 publications

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“…In natural conditions, the establishment of diverse forms of deadwood can take many years -sometimes decades or even centuries (Gibbons & Lindenmayer 2002). However, the natural processes involved can be accelerated for nature conservation purposes by the creation of artificial deadwood in order to enrich the habitat structure of intensively managed, homogenized forest habitats, such as even-aged or monoculture stands (Hane et al 2012, Zarnoch et al 2013, Barry et al 2017, Weiss et al 2018, where the amount and diversity of deadwood is markedly reduced. Conservationists use different methods to create diverse forest microhabitats, such as topping, girdling, bark-peeling of standing trees, felling to create fallen trees, supplementation with deadwood brought from elsewhere, and even prescribed burning (Halett et al 2001, Sandström et al 2018, Roth et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Foraging Activity of Woodpeckers on Various forms of Artificially Created Deadwood

et al. 2020

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Many woodpecker species rely on different forms of deadwood for nesting and foraging. However, the knowledge of the effect of enrichment of their habitat with different types on deadwood of this species group is lacking. Complex conservation-oriented management, including deadwood enrichment, was applied in a 20 ha even-aged oak-dominated woodland in Hungary. The foraging activities of woodpecker species were documented on selected treated trees over one, two and three years since these measures were implemented. The 109 individual oak trees examined represented five deadwood types: damaged-, girdled-, felled trees, and low-and tall stumps. We analysed the relationships between three variables (depth of foraging work, type of deadwood, and year) and foraging activity. Our results illustrated the prompt responses of woodpeckers to the treated trees. The woodpeckers used the five deadwood types in very different ways, and foraging activity was found to vary greatly in terms of depth of foraging and between years. More activity was carried out on both low-and tall stumps than on any other type one year after the treatment, whilst work on girdled trees and tall stumps predominated two and three years after the treatment. The utilisation of felled-and damaged trees by woodpeckers proceeded at a markedly slower pace than that of girdled trees and stumps, but the utilisation increased gradually. Most of the foraging activity was found to be on the outer bark, however, work on the inner bark and in the sapwood increased between the three years. The measures to conserve the woodpecker species should include the permanent creation and maintenance of various forms of deadwood to provide diverse and continuous foraging sites for woodpeckers.

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