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Buffer zones for biodiversity of plants and arthropods: is there a compromise on width?

Title:
Buffer zones for biodiversity of plants and arthropods: is there a compromise on width?

Key Subjects:

Key Subjects in Danish:
Sprøjtefri randzoner, bufferzoner, bufferbredder, biodiversitet, vilde planter, ukrudt, insekter, sommerfugle, nyttedyr, fugleføde, bioindikatorer

Abstract:
This report sum up the results of a one-year investigation on the effects of different widths of fertilizer and pesticide free buffer zones along hedges. It was demonstrated, that a buffer zone width of only 6 m is sufficient to ensure a marked increase of biodiversity along and in spring barley fields. An even broader buffer zone will always add a little further to the biodiversity. The very clear results suggest, that 6 m buffer zones might serve as a mean to counteract the loss of biodiversity in arable land. The biodiversity benefits obtained can immediately be monitored through standardised counts of butterflies with possible detailed follow-up by further plant and insect assessments.

Abstract in Danish:
Rapporten beskriver ét års undersøgelse af virkninger af forskellige bredder pesticid- og gødningsfrie bufferzoner langs levende hegn. Bufferzoner blot 6 m brede viste sig tilstrækkelige til markant at øge biodiversiteten langs og i vårbygmarker. En bredere randzone vil dog altid medføre en yderligere lille forøgelse af biodiversiteten. Undersøgelsens klare resultater taler for, at 6 m brede bufferzoner generelt kan benyttes til at stoppe tilbagegangen/fremme biodiversiteten på og nær de dyrkede arealer. Biodiversitetsgevinster af udlagte zoner vil overordnet kunne opgøres hurtigt ved standardtællinger af dagsommerfugle og mere detaljeret ved dybdegående opgørelser af planter og flere insekter.

Pesticides Research No. 127 2009:
Pesticides Research No. 127 2009

Publisher:
Danish Environmental Protection Agency

Performing organization(s):
Department of Agriculture and Ecology, University of Copenhagen
DK: Institut for Jordbrug og Økologi, Københavns Universitet

Department of Genetics and Biotechnology, University of Aarhus
DK: Institut for Genetik og Bioteknologi, Aarhus Universitet

Department of Biology, University of Copenhagen
DK: Biologisk Institut, Københavns Universitet

Copyright:
Danish Environmental Protection Agency

Creators:
Søren Navntoft
Kristian Kristensen
Louise C. Andresen
Lene Sigsgaard
Rasmus Nimgaard
Ib Johnsen
Peter Esbjerg

Contributor:
Schultz Grafisk (web)

Language:
eng

URL:
http://www.mst.dk/

ISBN nr. Electronic version:
978-87-92617-09-5

ISBN nr. Printed version:
978-87-92617-10-1

ISSN nr. Printed version:

Version:
1.0

Version/edition:
2009-11-24

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Publisher category:
statslig