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Biodiversity conservation in agricultural landscapes

linking farmers and agri-environmental measures to farmland birds

Josefsson, Jonas (2015). Biodiversity conservation in agricultural landscapes. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2015:100
ISBN 978-91-576-8398-4
eISBN 978-91-576-8399-1
[Doctoral thesis]

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Abstract

Agricultural industrialization alters rural landscapes in Europe, causing large-scale and rapid loss of important biodiversity. The principal instruments to protect farmland biodiversity are various agri-environmental measures (AEMs) in the EU Common Agricultural Policy (CAP). However, growing awareness of shortcomings to CAP biodiversity integration prompts examination of causes and potential solutions. This thesis assesses the importance of structural heterogeneity of crop and non-crop habitats and evaluates some related aspects of the CAP for 2015-2020. This includes studies of crop diversification, organic farming and buffer strips, and their potential for supporting deteriorating farmland bird diversity in a forest-farmland gradient. It also evaluates the role of collaborative conservation, with particular attention to the Swedish Volunteer & Farmer Alliance (SVFA), as a tool for influencing farmers’ engagement in AEMs as well as unsubsidized conservation.

Structural crop diversity, rather than the number of crop types in itself, positively affected farmland birds, especially in arable-dominated landscapes. Still, as almost all farms already met the CAP requirements for crop diversification, this policy may miss an important opportunity to deliver biodiversity benefits by setting limits too low and by neglecting structural crop diversity. The establishment of buffer strips along ditches boosted Skylarks and invertebrate numbers in adjacent cereal fields, while organic farming had only small and mixed effects on farmland birds, with both positive and negative effects on field nesters in the most arable-dominated landscapes and more forest- dominated landscapes, respectively. In general, landscape composition had a major effect on species richness, with different habitat preferences among field-nesting and non-crop-nesting birds. Social factors were more important for farmers’ engagement in AEMs than for unsubsidized conservation, suggesting that production-impeding AEMs may have poor chances of acceptance in regions with prevailing productivist norms. We also found that SVFA promoted both AEMs and unsubsidized conservation, and that measures positively affected farmland bird diversity in the most arable- dominated landscapes. However, low implementation rates of measures across SVFA limited the large- scale impact, highlighting the importance of following up stakeholders’ involvement.

This thesis suggests that farmland biodiversity conservation partly relies on policies that increase the structural heterogeneity of arable landscapes (e.g., through crop diversification and establishment of buffer strips). This is especially important in regions where arable farming is predominant and farmland heterogeneity is low. We conclude the future of AEMs for biodiversity protection partly lies in better integration into cultures of farming communities, possibly through volunteer-based approaches as an alternative to centralized solutions.

Authors/Creators:Josefsson, Jonas
Title:Biodiversity conservation in agricultural landscapes
Subtitle:linking farmers and agri-environmental measures to farmland birds
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :September 2015
Depositing date:22 September 2015
Volume:2015:100
Number of Pages:55
Papers/manuscripts:
NumberReferences
IJosefsson, J., Berg, Å., Hiron, M., Pärt, T. & Eggers, S. Does the CAP fit? Sensitivity of the farmland bird community to crop diversification in Sweden (manuscript).
IIJosefsson, J., Berg, Å., Hiron, M., Pärt, T. & Eggers, S. (2013). Grass buffer strips benefit invertebrate and breeding skylark numbers in a heterogeneous agricultural landscape. Agriculture, Ecosystems & Environment, 181, 101-107.
IIIJosefsson, J., Lokhorst, A. M., Pärt, T., Berg, Å. & Eggers, E. The role of collaborative biodiversity management in facilitating farmers’ intentions to adopt subsidized and unsubsidized conservation measures (manuscript).
IVJosefsson, J., Pärt, T., Berg, Å., Lokhorst, A. M. & Eggers, S. Farmscale implementation and ecological effects of bird conservation measures in response to the Swedish Volunteer & Farmer Alliance (manuscript).
Place of Publication:Uppsala
Publisher:Department of Ecology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8398-4
ISBN for electronic version:978-91-576-8399-1
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:P Natural resources > P01 Nature conservation and land resources
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 5 Social Sciences > 504 Sociology > Social Psychology
(A) Swedish standard research categories 2011 > 5 Social Sciences > 509 Other Social Sciences > Social Sciences Interdisciplinary (Peace and Conflict Research and Studies on Sustainable Society)
Agrovoc terms:agricultural landscape, farmland, land use, biodiversity conservation, organic farming, birds, habitats, farmers, attitudes, cap, environmental policies, sweden
Keywords:agri-environmental schemes, attitudes, buffer strips, collaborative conservation, crop diversity, landscape heterogeneity, non-crop habitat, organic farming, unsubsidized conservation, volunteer-based
URN:NBN:urn:nbn:se:slu:epsilon-e-2948
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2948
ID Code:12628
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
External funders:Carl Tryggers stiftelse för vetenskaplig forskning and FORMAS
Deposited By: Mr Jonas Josefsson
Deposited On:22 Sep 2015 14:32
Metadata Last Modified:22 Sep 2015 14:32

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