Organic farming affects the biological control of hemipteran pests and yields in spring barley independent of landscape complexity

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • K. Birkhofer
  • F. Arvidsson
  • D. Ehlers
  • V. L. Mader
  • J. Bengtsson
  • H. G. Smith

Context: Hemipteran pests cause significant yield losses in European cereal fields. It has been suggested that local management interventions to promote natural enemies are most successful in simple landscapes that are dominated by large arable fields. Objectives: We study how farming category (conventional, new and old organic fields) and landscape complexity affect pests, natural enemies and biological control services in spring barley. We further analyse if yields are related to pest infestation or biological control services. Methods: The amount of pasture and the length of field borders were used to define landscape complexity around barley fields in Southern Sweden. Arthropods were sampled with an insect suction sampler and predation and parasitism services were estimated by field observations and inspections of pest individuals. Results: Pest infestation was affected by landscape complexity, with higher aphid, but lower leafhopper numbers in more complex landscapes. Aphid predation was higher under organic farming and affected by effects on predator abundance and community composition independent of landscape complexity. Auchenorrhyncha parasitism was neither significantly affected by landscape complexity nor by farming category. Higher aphid predation rates and lower aphid densities were characteristic for organically managed fields with higher barley yields. Conclusions: Our results suggest that it is possible to increase both aphid biological control services and barley yield via local management effects on predator communities independent of landscape complexity. However, the success of such management practices is highly dependent on the pest and natural enemy taxa and the nature of the trophic interaction.

Original languageEnglish
JournalLandscape Ecology
Volume31
Issue number3
Pages (from-to)567-579
Number of pages13
ISSN0921-2973
DOIs
Publication statusPublished - 01.03.2016

    Research areas

  • Sustainability Science - Aphididae, Araneae, Auchenorrhyncha, Dryinidae, Ecosystem service, Yield

Recently viewed

Activities

  1. Hermann von Helmholtz-Zentrum für Kulturtechnik (Externe Organisation)
  2. Analyse des Feedbacks von (angehenden) Lehrkräften mit Microteaching Videos.
  3. What's it good for? : Functions of arts and culture for Hamburg's urban development
  4. Alumni Association - UC Berkeley (Externe Organisation)
  5. Das ,gute Leben‘: Was heißt das für andere?
  6. Initiativgruppe zur Erweiterung von Lernmöglichkeiten - IGEL 2011
  7. Education for Sustainability: "Going Green" - A Project in Progess
  8. Division of Occupational Psychology Annual Conference - DOP 2013
  9. Lively Artifacts. BCL-Engineers and their Self-Organizing Machines (The 26th Annual Meeting of the Society for Literature, Science and the Arts [SLSA])
  10. Time rebounds, time wealth, and sustainability: A conceptual model to empirically analyze the significance of time use for sustainable consumption
  11. Contentious politics and the role of connective technologies in Russian anti-war networks
  12. Inaugural Meeting of the Earth System Governance Taskforce on Knowledge Cumulation at Earth System Governance Taskforce and Meeting Day - 2021
  13. Sprachbildendes Engagement durch Partizipation in der Lehrer:innenbildung: Implementation von Service Learning durch das Projekt LehrWEP
  14. Arbeitsgruppe GeschlechterGesellschaftsTheorien (Externe Organisation)
  15. „Das ewig Dauernde in uns“. Immanenz und Transzendenz in Stifters Nachsommer
  16. 4th Keep it Simple Make it Fast! - KISMIF 2018
  17. The German Assisted Return Regime – an interpretive approach
  18. Lost in reflection – Zur Möglichkeit von Bildung im Kontext von Distance Learning“.