4.4 Article

Suction samplers for grassland invertebrates: comparison of numbers caught using Vortis™ and G-vac devices

期刊

INSECT CONSERVATION AND DIVERSITY
卷 9, 期 5, 页码 470-474

出版社

WILEY
DOI: 10.1111/icad.12185

关键词

Blo-Vac; D-vac; grassland insects; G-vac; vacuum sample; Vortis (TM)

资金

  1. University of Tripoli
  2. Purpan School of Engineering, France

向作者/读者索取更多资源

1. The efficiency of Vortis (TM) and a modified garden leaf-blower/vacuum 'G-vac' sampler were compared by sampling invertebrates using standardised sample areas and suction times at three grassland sites. The G-vac caught more individuals of Araneae, Auchenorrhyncha, Thysanoptera and Hymenoptera than the Vortis. Numbers of Diptera did not differ between devices, but the Vortis (TM) captured greater numbers of Coleoptera. 2. Estimated air velocity within the collecting nozzle was greater for the G-vac and its mode of application resulted in greater disturbance of the grass sward than with the Vortis (TM). These differences may have contributed to the larger captures of certain taxa by the G-vac. 3. It is concluded that G-vacs can be applied with confidence as a credible alternative to the bespoke Vortis (TM), and particularly for taxa which are most frequently sampled using suction samplers.

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