Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples

The Malaise trap is a popular device for assessing diverse terrestrial arthropod communities because it collects large samples with modest effort. A number of factors influence its collection efficiency, placement being one of them. For instance, when designing larger biotic surveys...

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Autores principales:	Dirk Steinke, Thomas WA Braukmann, Laura Manerus, Allan Woodhouse, Vasco Elbrecht
Formato:	article
Lenguaje:	EN
Publicado:	Pensoft Publishers 2021
Materias:	Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/34f5173573ae49bc96f2e6079f8e066c
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id	oai:doaj.org-article:34f5173573ae49bc96f2e6079f8e066c
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spelling	oai:doaj.org-article:34f5173573ae49bc96f2e6079f8e066c2021-12-02T17:27:28ZEffects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples10.3897/mbmg.5.592012534-9708https://doaj.org/article/34f5173573ae49bc96f2e6079f8e066c2021-04-01T00:00:00Zhttps://mbmg.pensoft.net/article/59201/download/pdf/https://mbmg.pensoft.net/article/59201/download/xml/https://mbmg.pensoft.net/article/59201/https://doaj.org/toc/2534-9708 The Malaise trap is a popular device for assessing diverse terrestrial arthropod communities because it collects large samples with modest effort. A number of factors influence its collection efficiency, placement being one of them. For instance, when designing larger biotic surveys using arrays of Malaise traps we need to know the optimal distance between individual traps that maximises observable species richness and community composition. We examined the influence of spacing between Malaise traps by metabarcoding samples from two field experiments at a site in Waterloo, Ontario, Canada. For one experiment, we used two trap pairs deployed at weekly increasing distances (3 m increments from 3 to 30 m). The second experiment involved a total of 10 traps set up in a row at 3 m distance intervals for three consecutive weeks. Results show that community similarity of samples decreases over distance between traps. The amount of species shared between trap pairs drops considerably at about 18 m trap-to-trap distance. This change can be observed across all major taxonomic groups and for two different habitat types (grassland and forest). Large numbers of OTUs found only once within samples cause rather large dissimilarity between distance pairs even at close proximity. This could be caused by a large number of transient species from adjacent habitats which arrive at the trap through passive transport, as well as capture of rare taxa, which end up in different traps by chance. Dirk SteinkeThomas WA BraukmannLaura ManerusAllan WoodhouseVasco ElbrechtPensoft PublishersarticleEcologyQH540-549.5ENMetabarcoding and Metagenomics, Vol 5, Iss , Pp 43-50 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ecology QH540-549.5
spellingShingle	Ecology QH540-549.5 Dirk Steinke Thomas WA Braukmann Laura Manerus Allan Woodhouse Vasco Elbrecht Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
description	The Malaise trap is a popular device for assessing diverse terrestrial arthropod communities because it collects large samples with modest effort. A number of factors influence its collection efficiency, placement being one of them. For instance, when designing larger biotic surveys using arrays of Malaise traps we need to know the optimal distance between individual traps that maximises observable species richness and community composition. We examined the influence of spacing between Malaise traps by metabarcoding samples from two field experiments at a site in Waterloo, Ontario, Canada. For one experiment, we used two trap pairs deployed at weekly increasing distances (3 m increments from 3 to 30 m). The second experiment involved a total of 10 traps set up in a row at 3 m distance intervals for three consecutive weeks. Results show that community similarity of samples decreases over distance between traps. The amount of species shared between trap pairs drops considerably at about 18 m trap-to-trap distance. This change can be observed across all major taxonomic groups and for two different habitat types (grassland and forest). Large numbers of OTUs found only once within samples cause rather large dissimilarity between distance pairs even at close proximity. This could be caused by a large number of transient species from adjacent habitats which arrive at the trap through passive transport, as well as capture of rare taxa, which end up in different traps by chance.
format	article
author	Dirk Steinke Thomas WA Braukmann Laura Manerus Allan Woodhouse Vasco Elbrecht
author_facet	Dirk Steinke Thomas WA Braukmann Laura Manerus Allan Woodhouse Vasco Elbrecht
author_sort	Dirk Steinke
title	Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
title_short	Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
title_full	Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
title_fullStr	Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
title_full_unstemmed	Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
title_sort	effects of malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples
publisher	Pensoft Publishers
publishDate	2021
url	https://doaj.org/article/34f5173573ae49bc96f2e6079f8e066c
work_keys_str_mv	AT dirksteinke effectsofmalaisetrapspacingonspeciesrichnessandcompositionofterrestrialarthropodbulksamples AT thomaswabraukmann effectsofmalaisetrapspacingonspeciesrichnessandcompositionofterrestrialarthropodbulksamples AT lauramanerus effectsofmalaisetrapspacingonspeciesrichnessandcompositionofterrestrialarthropodbulksamples AT allanwoodhouse effectsofmalaisetrapspacingonspeciesrichnessandcompositionofterrestrialarthropodbulksamples AT vascoelbrecht effectsofmalaisetrapspacingonspeciesrichnessandcompositionofterrestrialarthropodbulksamples
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Effects of Malaise trap spacing on species richness and composition of terrestrial arthropod bulk samples

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