Suction duration and numbers of Araneae and Auchenorrhyncha collected in grassland when using an open-ended cylinder to define the sample area
| Autor: | Eman Zentane, Henry Quenu, Richard Burkmar, Andrew Cherill |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Hydrology geography Suction geography.geographical_feature_category biology Nozzle Sampling (statistics) Vegetation biology.organism_classification 010603 evolutionary biology 01 natural sciences Grassland Auchenorrhyncha 010602 entomology Duration (music) Insect Science Environmental science Cylinder Artikkelit |
| Zdroj: | Entomologica Fennica |
| ISSN: | 2489-4966 0785-8760 |
| Popis: | Suction samplers are typically used with touch-down samples, where the nozzle is held stationary on the ground, or within an open-ended cylinder, where the nozzle is moved through the enclosed vegetation. With touch-down sampling, published estimates suggest that virtually all individuals and species of grassland invertebrate are captured within 3 s. Effects of suction duration on catch when sampling within a cylinder have rarely been investigated. Here, it was found that extrapolation from studies of touch-down sampling, based on the relative areas of the G-vac nozzle and the cylinder, can be used to guide minimum sampling durations for Auchenorrhyncha (leafhoppers and planthoppers) when using a G-vac. Additional time, however, may be necessary when sampling Araneae (spiders), probably because movement of the G-vac nozzle within the cylinder results in disturbance of the vegetation such that more specimens are made available to be captured than with touch-down sampling. |
| Databáze: | OpenAIRE |
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