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Effects of intensified forestry on the landscape-scale extinction risk of dead wood dependent species

Ranius, Thomas and Roberge, Jean-Michel (2011). Effects of intensified forestry on the landscape-scale extinction risk of dead wood dependent species. Biodiversity and conservation. 20 :13 , 2867-2882
[Research article]

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Official URL: http://dx.doi.org/10.1007/s10531-011-0143-8


In the future, a significant proportion of northern forests may become intensively managed through the planting of monospecific stands of native or introduced trees, and the use of multiple silvicultural treatments such as forest fertilization. Such an intensification of management in selected parts of the landscape is suggested by different zoning models, for example the Triad approach, which is under evaluation in some regions of North America. In this study, based on Fennoscandian conditions, we predicted landscape-scale extinction risks of five hypothetical model insect species dependent on fresh dead wood from Norway spruce (Picea abies), by simulating colonizations and local extinctions in forest stands. Intensified forestry applied to 50 % of the spruce stands led to strongly increased extinction risks of all species during the following 150 years. For one species – the sun-exposure specialist – there were strong effects already after 50 years. The negative effects of intensive plantation forestry could be compensated for by taking greater biodiversity conservation measures in other managed forests or by setting aside more forests. This is consistent with the Triad model, which is according to our analyses an effective way to decrease extinction risks, especially for the short-dispersing species and the species associated with closed forest. A zoning of forest land into intensive forestry, conventional forestry, and set asides may be better at combining increased timber production and maintenance of biodiversity in comparison to landscapes where all production forests are managed in the same way.

Authors/Creators:Ranius, Thomas and Roberge, Jean-Michel
Title:Effects of intensified forestry on the landscape-scale extinction risk of dead wood dependent species
Series Name/Journal:Biodiversity and conservation
Year of publishing :2011
Page range:2867-2882
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
K Forestry > K01 Forestry - General aspects
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Agrovoc terms:Zoning, Forestry, Viability, Population, Insects
Keywords:CWD, functional zoning, metapopulation, plantation forestry, population viability analysis, saproxylic insects, triad
Permanent URL:
ID Code:11009
Faculty:NL - Faculty of Natural Resources and Agricultural Sciences (until 2013)
S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology

(S) > Dept. of Wildlife, Fish and Environmental Studies
External funders:Future Forests
Deposited By: Thomas Ranius
Deposited On:03 Mar 2014 14:50
Metadata Last Modified:21 Feb 2016 06:55

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