Balancing sampling effort in pitfall trapping of carabid beetles

Niemelä, Jari; Halme, Eero; Haila, Yrjö

doi:10.33338/ef.83490

Cited by 71 publications

(27 citation statements)

References 5 publications

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“…The first sampling period coincided with the exclusion experiment (10 days) and a second lasted for the following 10 days in order to improve accuracy in sampling the ground‐dwelling predator community (e.g. Niemalä, Halme & Haila ). Invertebrates were preserved in 70% ethanol.…”

Section: Methodsmentioning

confidence: 99%

Conservation tillage mitigates the negative effect of landscape simplification on biological control

Tamburini

Simone

Sigura

et al. 2015

Journal of Applied Ecology

122

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Biological pest control is a key ecosystem service, and it depends on multiple factors acting from the local to the landscape scale. However, the effects of soil management on biological control and its potential interaction with landscape are still poorly understood. In a field exclusion experiment, we explored the relative effect of tillage system (conservation vs. conventional tillage) on aphid biological control in 15 pairs of winter cereal fields (barley and wheat) selected along a gradient of landscape complexity. We sampled the abundance of the main natural enemy guilds, and we evaluated their relative contribution to aphid predation and parasitism. Conservation tillage was found to support more abundant predator communities and higher aphid predation (16% higher than in the fields managed under conventional tillage). In particular, both the abundance and the aphid predation of vegetation- and ground-dwelling arthropods were increased under conservation tillage conditions. Conservation tillage also increased the parasitism rate of aphids. A high proportion of semi-natural habitats in the landscape enhanced both aphid parasitism and predation by vegetation-dwelling organisms but only in the fields managed under conventional tillage. The better local habitat quality provided by conservation tillage may compensate for a low-quality landscape. Synthesis and applications. Our study stresses the importance of considering both soil management and landscape composition when planning strategies to maximize biological control services in agro-ecosystems, highlighting the role played by conservation tillage in supporting natural enemy communities. In simple landscapes, the adoption of conservation tillage will locally improve biological control provided by both predators and parasitoids mitigating the negative effects of landscape simplification. Moreover, considering the small scale at which both predation and parasitism responded to landscape composition, a successful strategy to improve biological control would be to establish a fine mosaic of crop and non-crop areas such as hedgerows, tree lines and small semi-natural habitat patches. © 2016 British Ecological Society

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Section: Methodsmentioning

confidence: 99%

Conservation tillage mitigates the negative effect of landscape simplification on biological control

Tamburini

Simone

Sigura

et al. 2015

Journal of Applied Ecology

122

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“…, 2002). Trapping was conducted for a 4‐week period in June/July and following collection, traps were immediately re‐inserted for a second 4‐week trapping period in July/August (Niemelä et al. , 1990).…”

Section: Methodsmentioning

confidence: 99%

Riparian field margins: their potential to enhance biodiversity in intensively managed Grasslands

Cole¹,

Brocklehurst

McCracken³

et al. 2011

Insect Conserv Diversity

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Abstract. 1. Riparian field margins (i.e. fenced off areas adjacent to watercourses) are becoming widespread in the UK as a means of mitigating diffuse pollution in intensive grasslands. By providing additional habitats for wildlife, they can potentially enhance farmland biodiversity. This study examined a range of riparian margins to determine their impact on invertebrates. 2. Over a 4‐year period, key invertebrates were monitored by pitfall traps at 69 riparian sites in south‐west Scotland. Riparian margins were classified as open margins (i.e. no fence between the field and watercourse), narrow margins (fences erected within 2.6 m of the watercourse) and wide margins (fences erected over 5 m from the watercourse). Pitfall transects were established at each site in the margin and field. 3. Generalised Linear Mixed Models (GLMMs) were used to model the influence of riparian management and vegetation height on invertebrate activity density. Riparian margins closed to livestock (i.e. wide and narrow margins) had the highest activity densities of Hemiptera, Opiliones, Symphyta larvae and Arionidae, and this could not solely be attributed to differences in vegetation height. For most invertebrate groups, activity density did not differ between wide and narrow margins. Only Linyphiidae, predatory coleopteran larvae and Lumbricidae had higher activity densities in the fields than adjacent riparian margins. 4. The erection of fences along watercourses creates habitat heterogeneity in intensively managed grasslands resulting in enhanced invertebrate populations and thus potentially more prey for foliage gleaning birds. Although margin width did not have a significant influence on invertebrate activity density, wider margins provide a greater area of semi‐natural habitat.

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“…Koivula et al ; Luff ; Work et al ) and the length of sampling time (e.g. Isono ; Lövei & Magura ; Niemelä et al ). Thus, evaluating effects of trap size and sampling duration on collection of ground dwelling arthropods is important for biodiversity monitoring.…”

Section: Introductionmentioning

confidence: 99%

Effects of pitfall trap size and sampling duration on collection of ground beetles (Coleoptera: Carabidae) in temperate forests

Jung

Jeong²,

Lee

2019

Entomological Research

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Pitfall trapping is a standard sampling method to compare the abundance or community structure of ground beetles. However, effects of sampling duration on biodiversity estimation of ground beetles according to different trap sizes have not been experimentally evaluated in temperate forests in Korea. Therefore, the objective of this study was to determine the interaction between trap sizes (SB, small‐sized bottle; MB, medium‐sized bottle; PC, plastic cup; PJ, plastic jar; PT, perforated type trap; FT, funnel‐type trap) and sampling duration (T1, 2 weeks × 2 sessions, 28 days; T2, 2 weeks × 4 sessions, 56 days; T3, 4 weeks × 2 sessions, 56 days) on estimation of ground beetle assemblages in Naejangsan National Park, a temperate forest in Korea. Funnel type and larger pitfall traps collected higher numbers of individuals and species than other trap sizes. Species composition of ground beetles was different by size of traps (SB, MB, and PC vs. PJ, PT, and FT). In particular, ground beetle composition in larger traps (PJ, PT, and FT) appeared to be influenced by environmental characteristics according to localities (e.g., soil characters and dominant tree species). These findings from our study support that pitfall trapping of ground beetles can be influenced by trap sizes per se as well as sampling durations and environmental characteristics. Thus, biodiversity monitoring in temperate forests should be conducted with long sampling duration (at least 28 days) using large‐sized traps (> 7.5 cm in diameter of trap mouthpart) considering expenses and study aims.

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Balancing sampling effort in pitfall trapping of carabid beetles

Cited by 71 publications

References 5 publications

Conservation tillage mitigates the negative effect of landscape simplification on biological control

Conservation tillage mitigates the negative effect of landscape simplification on biological control

Riparian field margins: their potential to enhance biodiversity in intensively managed Grasslands

Effects of pitfall trap size and sampling duration on collection of ground beetles (Coleoptera: Carabidae) in temperate forests

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