Breeding Skylarks Alauda arvensis on organic set-asides—effects of time of cutting, vegetation structure and landscape composition

Authors

  • Åke Berg The Swedish Biodiversity Centre, Swedish University of Agricultural Sciences https://orcid.org/0000-0002-0173-7464
  • Olle Kvarnbäck The Rural Economy and Agricultural Society
  • Åsa Gustafsson Department of Ecology, Swedish University of Agricultural Sciences

DOI:

https://doi.org/10.34080/os.v19.22666

Keywords:

habitat selection, predation, agriculture, anthropogenic effects, threats, breeding success, wildlife management

Abstract

We assessed the quality of organic set-asides as habitat for breeding Skylarks. We evaluated (i) density in relation to vegetation structure and landscape composition, (ii) reproductive success on set-asides cut at normal time (1 June) and with delayed cutting (15 June), and (iii) nest predation and destruction by using artificial nests. Skylark density was negatively associated with vegetation height and cover, and it was three times higher on fields without forest than with more than 50% forest in the surrounding landscape. Of the artificial nests, 56% were destroyed by cutting that also increased predation on surviving nests. Delayed cutting resulted in higher reproductive success; mean number of fledged broods per territory increased from 0.42 to 0.52. The negative effects of early cutting seemed to be largest on fields with sparse vegetation. Based on fledging dates we suggest that 20 June is a reasonable date for first cutting in south-central Sweden. Reproductive success on organic set-asides could probably be further improved if less dense vegetation (or unsown patches or strips) is combined with a delayed cutting.

Downloads

Download data is not yet available.

Downloads

Published

2009-01-01

How to Cite

Berg, Åke, Kvarnbäck, O., & Gustafsson, Åsa. (2009). Breeding Skylarks Alauda arvensis on organic set-asides—effects of time of cutting, vegetation structure and landscape composition. Ornis Svecica, 19(1), 32–40. https://doi.org/10.34080/os.v19.22666

Issue

Section

Research Papers