A1 Journal article (refereed)
Managing conservation values of protected sites : How to maintain deciduous trees in white-backed woodpecker territories (2020)


Hämäläinen, K., Junninen, K., Halme, P., & Kouki, J. (2020). Managing conservation values of protected sites : How to maintain deciduous trees in white-backed woodpecker territories. Forest Ecology and Management, 461, Article 117946. https://doi.org/10.1016/j.foreco.2020.117946


JYU authors or editors


Publication details

All authors or editors: Hämäläinen, Karoliina; Junninen, Kaisa; Halme, Panu; Kouki, Jari

Journal or series: Forest Ecology and Management

ISSN: 0378-1127

eISSN: 1872-7042

Publication year: 2020

Volume: 461

Article number: 117946

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.foreco.2020.117946

Publication open access: Not open

Publication channel open access:


Abstract

Successional and other temporal habitat changes may also affect conservation areas and reduce their conservation value. Active management to promote vulnerable habitat features may be an effective, but controversial, solution. Old deciduous trees and deciduous dead wood in boreal forest reserves are examples of habitat features that may be lost during succession, yet several threatened species, including the white-backed woodpecker (Dendrocopos leucotos), are dependent on them. Encroaching spruce have been removed from white-backed woodpecker territories to promote the regeneration of deciduous trees and to preserve habitat quality, although the efficiency of this treatment is unclear. In this study, we measured the canopy tree potential (integrating the number, height and condition) of aspen, birch and spruce saplings, and the number and basal area of mature trees in control and treatment sites 2–12 years after spruce removal. The canopy tree potential of aspen saplings increased on treated sites, along with a decrease in the number of spruce saplings and mature spruce trees. We found no evidence that spruce removal would benefit birch saplings. For both aspen and birch saplings, the abundance of mature trees of the same species increased their canopy tree potential more than spruce removal. Overall, our results indicate that spruce removal facilitates aspen regeneration, particularly in areas where large mature aspen trees are present. The lack of birch regeneration, however, indicates that maintaining a full array of important habitat characteristics in white-backed woodpecker territories may require a more comprehensive set of management tools than simply removal of spruce.


Keywords: forest conservation; protected areas; habitat types; environmental rehabilitation; broad-leaved trees; white-backed woodpecker

Free keywords: habitat management; regeneration; recruitment; herbivory; restoration; umbrella species


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 3


Last updated on 2021-07-07 at 21:31