The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS)
Exposed Riverine Sediments (ERS) are often characterised by a high diversity of microhabitats due to strong lateral gradients in temperature, humidity, inundation frequency and availability of aquatic food resources and to variations in the degree of vegetation cover, sediment size and sorting. This...
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Institute of Entomology, Biology Centre, Czech Academy of Science
2007-07-01
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doaj-85acefc5db5e4b5585ebd5f8be30795d2021-04-16T20:34:15ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292007-07-01104347948710.14411/eje.2007.068eje-200703-0016The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS)Adam J. BATES0Jon P. SADLER1Joe N. PERRY2Adrian P. FOWLES3School of Geography, Earth & Environmental Sciences, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; e-mail: a.j.bates@bham.ac.ukSchool of Geography, Earth & Environmental Sciences, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; e-mail: a.j.bates@bham.ac.ukRothamstead Research, Harpenden, Hertfordshire, AL5 2JQ, UKCountryside Council for Wales, Plas Penrhos, Bangor, Gwynedd, LL57 2LQ, UKExposed Riverine Sediments (ERS) are often characterised by a high diversity of microhabitats due to strong lateral gradients in temperature, humidity, inundation frequency and availability of aquatic food resources and to variations in the degree of vegetation cover, sediment size and sorting. This variation, potentially in combination with interspecific competitive interactions, is thought to drive the microspatial distribution of ERS invertebrates. This research investigated the microspatial distribution of six ERS specialist beetles across three discreet patches of ERS. In particular it examined the temporal stability of species distributions, and their spatial association with environmental variability and other species. The research used a grid of 204 modified dry pitfall traps over six sampling periods in which weather conditions and water levels were stable, and used the Spatial Analysis by Distance IndicEs (SADIE) method to test the significance of spatial distributions and associations. Strong and significant microspatial zonation was observed for all species, and with few exceptions these distributions were remarkably stable across the study period. This zonation was mainly associated with elevation and proximity to the water, and several species were consistently spatially associated or disassociated with one another. This suggests that laterally more extensive patches of ERS support more species. Operations that reduce the size of ERS patches, such as channelisation, aggregate extraction and regulation are therefore likely to reduce ERS invertebrate diversity.https://www.eje.cz/artkey/eje-200703-0016_The_microspatial_distribution_of_beetles_Coleoptera_on_exposed_riverine_sediments_ERS.phpcarabidaeelateridaehydroecologyhabitat preferencemicrodistributionpitfall trappingriparianexposed riverine sedimentsriver severnspatial analysis by distance indices(sadie) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Adam J. BATES Jon P. SADLER Joe N. PERRY Adrian P. FOWLES |
spellingShingle |
Adam J. BATES Jon P. SADLER Joe N. PERRY Adrian P. FOWLES The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS) European Journal of Entomology carabidae elateridae hydroecology habitat preference microdistribution pitfall trapping riparian exposed riverine sediments river severn spatial analysis by distance indices (sadie) |
author_facet |
Adam J. BATES Jon P. SADLER Joe N. PERRY Adrian P. FOWLES |
author_sort |
Adam J. BATES |
title |
The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS) |
title_short |
The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS) |
title_full |
The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS) |
title_fullStr |
The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS) |
title_full_unstemmed |
The microspatial distribution of beetles (Coleoptera) on exposed riverine sediments (ERS) |
title_sort |
microspatial distribution of beetles (coleoptera) on exposed riverine sediments (ers) |
publisher |
Institute of Entomology, Biology Centre, Czech Academy of Science |
series |
European Journal of Entomology |
issn |
1210-5759 1802-8829 |
publishDate |
2007-07-01 |
description |
Exposed Riverine Sediments (ERS) are often characterised by a high diversity of microhabitats due to strong lateral gradients in temperature, humidity, inundation frequency and availability of aquatic food resources and to variations in the degree of vegetation cover, sediment size and sorting. This variation, potentially in combination with interspecific competitive interactions, is thought to drive the microspatial distribution of ERS invertebrates. This research investigated the microspatial distribution of six ERS specialist beetles across three discreet patches of ERS. In particular it examined the temporal stability of species distributions, and their spatial association with environmental variability and other species. The research used a grid of 204 modified dry pitfall traps over six sampling periods in which weather conditions and water levels were stable, and used the Spatial Analysis by Distance IndicEs (SADIE) method to test the significance of spatial distributions and associations. Strong and significant microspatial zonation was observed for all species, and with few exceptions these distributions were remarkably stable across the study period. This zonation was mainly associated with elevation and proximity to the water, and several species were consistently spatially associated or disassociated with one another. This suggests that laterally more extensive patches of ERS support more species. Operations that reduce the size of ERS patches, such as channelisation, aggregate extraction and regulation are therefore likely to reduce ERS invertebrate diversity. |
topic |
carabidae elateridae hydroecology habitat preference microdistribution pitfall trapping riparian exposed riverine sediments river severn spatial analysis by distance indices (sadie) |
url |
https://www.eje.cz/artkey/eje-200703-0016_The_microspatial_distribution_of_beetles_Coleoptera_on_exposed_riverine_sediments_ERS.php |
work_keys_str_mv |
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