Field density and distribution of weeds are associated with spatial dynamics of omnivorous ground beetles (Coleoptera: Carabidae)

Kulkarni, Sharavari S.; Dosdall, Lloyd M.; Spence, John R.; Willenborg, Christian J.

doi:10.1016/j.agee.2016.11.018

Cited by 23 publications

(14 citation statements)

References 56 publications

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“…However, a related species, Poecilus cupreus, which has a wider range in Europe, is common in Poland, and lives both in open and forested areas, but also near water bodies (Burakowski et al 1974;Barczak et al 2000, Porhajašová et al 2008. Harpalus affinis, a species widely distributed across Europe, polyphagous, also predatory and potentially aphidophagous, lives mainly in open, dry and sunny areas, including arable fields, fallow land and ruderal areas (Burakowski et al 1974;Jørgensen and Lövei 1999;Barczak et al 2000;Kulkarni et al 2017). These preferences were confirmed in our study, since the species was least Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Most imagines of Carabidae are polyphagous, both predators and plant eaters, especially seed eaters, and some species are parasites (Kotze et al 2011). Kulkarni et al (2017) summarized that in temperate agroecosystems, carabid beetles (Coleoptera: Carabidae) are key members of epigaeic invertebrate assemblages, with the potential to provide valuable ecological services. In addition to their significant role as predators of invertebrate pests, carabids consume substantial numbers of seeds produced by numerous weedy species, and in so doing, can reduce weed populations through regulation of the weed seedbank (Honĕk et al 2003;Kulkarni et al 2017;Saska et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Ground beetles (Carabidae) of field margin habitats

Bennewicz

Barczak

2020

Biologia

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The aim of this study was to identify the role of field margin habitats in preserving the diversity and abundance of ground beetle assemblages, including potentially entomophagous species and those with conservation status in Poland. Research material was collected in 2006–2007 in four types of margin habitats – a forest, bushes, ditches and in two arable fields. Insects were captured into pitfalls, without preservation liquid or bait added to the traps. Traps were inspected twice a week, between May and August, and one sample was a weekly capture. In field margin habitats the most abundant species were Limodromus assimilis, Anchomenus dorsalis, Pterostichus melanarius and Carabus auratus. A lower abundance of species was noted on fields, with dominant Poecilus cupreus and P. melanarius. The group of zoophagous carabids found in our study includes 30 species from field margin habitats, i.e. 37.5% of all captured Carabidae taxa and 58.3% of all specimens. The share of aphidophagous species was 84.9% among bushes, 86.7% near ditches, and 88.0% in the forest habitat. Several species captured during the study are under protection in Poland. These include the partly protected Carabus convexus, which also has the status of near threatened species, the partly protected Calosoma auropunctatum, and Broscus cephalotes. Considering all the investigated field margin habitats, ground beetles were most numerous in the oak-hornbeam habitat, defined as bushes, formed predominantly by Prunus spinosa, Crataegus leavigata, Sambucus nigra and Rosa canina. Thus, this habitat was the most important reservoir/refugium for the ground beetles.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ground beetles (Carabidae) of field margin habitats

Bennewicz

Barczak

2020

Biologia

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“…Weed patches are often stationary over years (Gerhards and Christensen 2003;Kulkarni et al 2017;Malmstrom et al 2017). Several authors have observed relationships between the patchy distribution of various weed species and spatial soil heterogeneity.…”

Section: Introductionmentioning

confidence: 99%

Linking weed patterns with soil properties: a long-term case study

et al. 2019

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The spatial distribution and density of different weed species were monitored during a long-term survey over a period of 9 years on a 5.8 ha arable field and related to soil properties. Weed seedlings were determined every year in spring on a regular grid with 429 observation points (15 × 7.5 m; net study area = 4 ha). Dominant weed species were Chenopodium album, Polygonum aviculare, Viola arvensis and different grass weeds, clearly dominated by Alopecurus myosuroides. A non-invasive electromagnetic induction survey was conducted to evaluate available water capacity directly in the field at high spatial resolution. Further soil properties were evaluated following the minimum-invasive approach with soil sampling and subsequent mid-infrared spectroscopy. Plant available nutrients were analysed with conventional lab methods. Redundancy analysis served to describe the effect of soil properties, different years and field crops on weed species variability. Seven soil properties together explained 30.7% of the spatial weed species variability, whereas 28.2% was explained by soil texture, available water capacity and soil organic carbon. Maps for site-specific weed management were created based on soil maps. These maps permit several benefits for precision crop protection, such as a better understanding of soilweed interrelations , improved sampling strategies and reduction in herbicide use.

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“…Similarly, the direct effects of weed management on pollen beetle regulation by natural enemies has been little studied, however, generalist predators such as carabids and spiders may benefit from increased weed cover through provision of shelter and alternative sources of food/prey (Speight and Lawton 1976; Holland et al 1999;Schmidt et al 2005;Sunderland and Samu 2000). In particular, omnivorous carabid species that consume weed seeds as well as prey have been shown to be associated with increased weed cover (Kulkarni et al 2017;Diehl et al 2012). Potentially, therefore, less intensive weed management regimes may enhance pollen beetle regulation by these natural enemies.…”

Section: Weed Managementmentioning

confidence: 99%