Unexpected visitors: flightless beetles in window traps

Horák, Jakub; Vodka, Štěpán; Pavlíček, Jan; Boža, Petr

doi:10.1007/s10841-012-9526-8

Cited by 20 publications

(23 citation statements)

References 28 publications

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“…2) In forests, the success of the trophic specialization can be attributed to the heterogeneity of trophic ecological niches, supported by the microclimatic complexity, leading to the diversification of dietary strategies. Carabus auronitens, for example, is able to exploit both vertical and horizontal vegetation structure (63)(64)(65).…”

Section: Forestsmentioning

confidence: 99%

Habitat diversity analysis along an altitudinal sequence of alpine habitats: the Carabid beetle assemblages as a study model

et al. 2016

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Section: Forestsmentioning

confidence: 99%

Habitat diversity analysis along an altitudinal sequence of alpine habitats: the Carabid beetle assemblages as a study model

et al. 2016

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“…Present studies indicate that potential bias of spatial autocorrelation is not absolutely dependent on scale of trapping designs [8], [9], [17], [18]. Thus, mass trapping is not necessary for site level type of studies.…”

Section: Introductionmentioning

confidence: 67%

Effect of Site Level Environmental Variables, Spatial Autocorrelation and Sampling Intensity on Arthropod Communities in an Ancient Temperate Lowland Woodland Area

Horák

2013

PLoS ONE

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The interaction of arthropods with the environment and the management of their populations is a focus of the ecological agenda. Spatial autocorrelation and under-sampling may generate bias and, when they are ignored, it is hard to determine if results can in any way be trusted. Arthropod communities were studied during two seasons and using two methods: window and panel traps, in an area of ancient temperate lowland woodland of Zebracka (Czech Republic). The composition of arthropod communities was studied focusing on four site level variables (canopy openness, diameter in the breast height and height of tree, and water distance) and finally analysed using two approaches: with and without effects of spatial autocorrelation. I found that the proportion of variance explained by space cannot be ignored (≈20% in both years). Potential bias in analyses of the response of arthropods to site level variables without including spatial co-variables is well illustrated by redundancy analyses. Inclusion of space led to more accurate results, as water distance and tree diameter were significant, showing approximately the same ratio of explained variance and direction in both seasons. Results without spatial co-variables were much more disordered and were difficult to explain. This study showed that neglecting the effects of spatial autocorrelation could lead to wrong conclusions in site level studies and, furthermore, that inclusion of space may lead to more accurate and unambiguous outcomes. Rarefactions showed that lower sampling intensity, when appropriately designed, can produce sufficient results without exploitation of the environment.

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“…Buse () and Horák et al . () reported that this fauna is more frequently sampled in spring and summer and hypothesised their probable hibernation in litter. But before being able to properly experiment the influence of ancientness or fragmentation of the forest on this species, it is important to fulfil the lack of knowledge on their phenology.…”

Section: Introductionmentioning

confidence: 94%

“…Some have been reared from branches ( Kyklioacalles navieresi, Onyxacalles luiguioni, Ruteria hypocrita (Galibert, ); Acalles pulchellus (Hoffmann et al ., ); Dienerella clathrata (Leather et al ., ); Aparopion chevrolati (Cocciufa et al ., ). Flightless saproxylic beetles have been sampled both by amateur and scientific entomologists using different methods: by beating the vegetation, sight identification, sieving litter, using pitfall traps (Galibert, ; Hoffmann et al ., ; Heijerman, ; Buse, ), and, exceptionally, window fly traps (Horák et al ., ). For details on these methods, see Leather et al .…”

Section: Introductionmentioning

confidence: 97%

“…In contrast, Horák et al . () used 62 window traps in five sites, and 50 individual specimens of Cryptorhynchinae ( Acalles camelus; Acalles fallax, Ruteria hypocrita; Kyklioacalles roboris ) and 20 individual specimens of Molytinae ( Trachodes hispidus ) were collected, mainly between April and September. As these species were present in secondary forest, this study showed that these beetles can reappear in secondary forest.…”

Section: Introductionmentioning

confidence: 99%

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How and when should flightless, saproxylic, litter‐dwelling coleoptera be surveyed?

Cateau

Courtin

Brustel

2016

Insect Conserv Diversity

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1. The limited dispersal and the high trophic requirements of flightless saproxylic beetles makes them good indicators of spatial and temporal continuity. Few studies have been conducted on these species, and the two main studies produced contradictory results. Knowledge is thus lacking on this fauna, but before performing experiments to assess their value as indicators, it is important to know how and when they can be sampled.2. Sieving litter and Berlese extraction in six oak woodlands showed that sampling 10 trees per forest is sufficient to capture 97.2% of the fauna present.3. Two stands were surveyed at monthly intervals for 2 years to determine the species phenology. All the species were present throughout the year. Variation in abundance was only observed in four out of 11 species. Spring and fall were shown to be the best periods to survey them in the litter. No significant variation in abundance was observed between the two sampling years. This fauna thus appears to be very stable over time.4. Certain climate parameters, high humidity (little sunshine and rainfall several days before sampling) may result in the beetles being more abundant in the litter at certain times. For efficient sampling, long periods of fine weather should thus be avoided.

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Unexpected visitors: flightless beetles in window traps

Cited by 20 publications

References 28 publications

Habitat diversity analysis along an altitudinal sequence of alpine habitats: the Carabid beetle assemblages as a study model

Habitat diversity analysis along an altitudinal sequence of alpine habitats: the Carabid beetle assemblages as a study model

Effect of Site Level Environmental Variables, Spatial Autocorrelation and Sampling Intensity on Arthropod Communities in an Ancient Temperate Lowland Woodland Area

How and when should flightless, saproxylic, litter‐dwelling coleoptera be surveyed?

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