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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Habitat-dependency of transect walk and pan trap methods for bee sampling in farmlands
Authors: Templ, Barbara
Mozes, Edina
Templ, Matthias
Földesi, Rita
Szirák, Ádám
Báldi, András
Kovács-Hostyánszki, Anikó
DOI: 10.21256/zhaw-3192
Published in: Journal of Apicultural Science
Volume(Issue): 63
Issue: 1
Page(s): 93
Pages to: 115
Issue Date: 2019
Publisher / Ed. Institution: Apicultural Research Association
ISSN: 2299-4831
Language: English
Subjects: Bee survey; Insect pollinator; Redundancy analysis; Sampling bias; Transformation-based; Wild bee
Subject (DDC): 590: Animals (Zoology)
Abstract: Bees are the most important group of flower visitors providing an essential ecosystem service, namely pollination. Due to the worldwide decline of bees, there should be standardized sampling methods in place to ensure consistent and comparable results between studies. We compared the two commonly used sampling methods of yellow pan traps and transect walk to determine (i) which habitat variables affect the species composition, abundance and species richness of sampled bee communities, (ii) which method potentially contains sampling bias towards some individuals or groups of bees and (iii) the efficiency of sampling in various habitats. We conducted fieldwork in different agricultural habitats distributed along landscape heterogeneity and topography gradients. Our results showed that the height of vegetation, the average number of flowers and the amount of woody vegetation had the greatest influence on the sampling efficiency. Our survey also demonstrated that sampling by transect walk captured less bees in general, especially in stubble, maize, and cereal fields. We found that Apis mellifera and Bombus spp. were well represented in samples collected by the transect walk method, while the abundance of other genera, especially Dasypoda, Hylaeus and Panurgus was higher in pan traps. Based on the results, we suggest (i) the transect walk method to compare samples of flower-visiting wild bee communities from various habitats of different vegetation and flower characteristics, (ii) application of the transect walk or pan traps to compare similar habitats and (iii) adoption of a comprehensive method which would incorporate both sampling techniques to gain a more complex insight into wild bee species composition.
Fulltext version: Published version
License (according to publishing contract): CC BY-NC-ND 4.0: Attribution - Non commercial - No derivatives 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Data Analysis and Process Design (IDP)
Appears in collections:Publikationen School of Engineering

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