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1 June 2011 Can Repeated Fertilizer Applications to Young Norway Spruce Enhance Avian Diversity in Intensively Managed Forests?
Lars Edenius, Grzegorz Mikusiński, Johan Bergh
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Abstract

Repeated fertilization of forests to increase biomass production is an environmentally controversial proposal, the effects of which we assessed on breeding birds in stands of young Norway spruce (Picea abies), in an intensively managed forest area in southern Sweden. Our results show that fertilized stands had 38% more species and 21% more individuals than unfertilized stands. Compared with stands under traditional management, the further intensification of forestry by repeated applications of fertilizers thus seemed to enhance species richness and abundance of forest birds. We cannot conclude at this stage whether the response in the bird community was caused by changes in food resources or increased structural complexity in the forest canopy due to the skid roads used for the application of the fertilizers. Future studies should focus on structural and compositional effects of fertilization processes during the entire rotation period and at assessing its effects in a landscape context.

© Royal Swedish Academy of Sciences 2011
Lars Edenius, Grzegorz Mikusiński, and Johan Bergh "Can Repeated Fertilizer Applications to Young Norway Spruce Enhance Avian Diversity in Intensively Managed Forests?," AMBIO: A Journal of the Human Environment 40(5), 521-527, (1 June 2011). https://doi.org/10.1007/s13280-011-0137-5
Received: 27 October 2010; Accepted: 22 January 2011; Published: 1 June 2011
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