Differential effects of semi-natural habitats and organic management on spiders in viticultural landscapes

Kolb, Sebastian; Uzman, Deniz; Leyer, Ilona; Reineke, Annette; Entling, Martin H.

doi:10.1016/j.agee.2019.106695

Cited by 37 publications

(25 citation statements)

References 45 publications

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“…These results are in line with the intermediate landscape‐complexity hypothesis (Tscharntke et al., 2012) and may reflect higher spillover in complex landscapes, where natural enemies do find resources and refuges in semi‐natural habitats around vineyards, and are thus less affected by local management practices (Landis et al., 2000; Rusch et al., 2010). Semi‐natural habitats are known to benefit natural enemies (including spiders that largely dominated communities in our study) by providing refuges against disturbance, overwintering habitats, food resources and suitable microhabitats (Kolb et al., 2020; Mestre et al., 2018; Schmidt & Tscharntke, 2005). More complex landscapes therefore harbour more potential sources of early‐season spillover into vineyards that may explain our findings (Hogg & Daane, 2010; Mestre et al., 2018).…”

Section: Discussionmentioning

confidence: 93%

“…This is particularly true for spiders that dominated communities sampled in our study and that are very sensitive to habitat structure and plant diversity (Bruggisser et al., 2012; Daane et al., 2018; Langellotto & Denno, 2004). Spiders are known to respond positively to more diverse vegetation structure due to higher availability of retreats, improved microclimatic conditions and enhanced food availability (Entling et al., 2007; Kolb et al., 2020). The abundance of natural enemies decreased with the distance to the cover crop treatment across plant diversity treatments, confirming the positive effect of cover crops on natural enemies in our experiment (Figure S2).…”

Section: Discussionmentioning

confidence: 99%

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Benefits of increased cover crop diversity for predators and biological pest control depend on the landscape context

Beaumelle

Auriol

Grasset

et al. 2021

Ecol Sol and Evidence

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1. Increasing plant diversity in agricultural systems is a promising way to balance food production and biodiversity conservation. Biological pest control, a crucial ecosystem service delivered by natural enemies, could particularly benefit from increased plant diversity at the local scale. Such positive effects however often depend on the landscape context that shapes the pool of natural enemy species available and their ability to colonize newly created habitats. However, how the landscape context modulates the local effect of plant diversity on natural enemies and pest control services remains unclear.2. Here, we manipulated the diversity of cover crops (2 versus 20 plant species) in nine pairs of vineyards located along a landscape gradient ranging from 20 to 60% of semi-natural habitats. We sampled natural enemy communities in the soil and foliage and measured the predation rate of an important moth pest in European vineyards (Lobesia botrana).3. Diverse cover crops enhanced the abundance of natural enemies by 140% across the experiment, but without changing their taxonomic richness and composition.We further found a distance-decay effect of cover crops on natural enemy abundance across cover crop types. 4. The landscape context remarkably modulated the effects of local plant diversity on natural enemy abundance and predation rates. While predation rates were on average similar in the low and high cover crop diversity treatments across the experiment, diverse cover crops had higher positive effects on predation and natural enemies in simple (<50% semi-natural habitats) than complex landscapes. Predation rates increased from 11 to 42% in the high compared with low cover crop diversity treatments in simple landscapes. Synthesis and applications:Our study demonstrates the benefits of increasing plant diversity at the local scale to enhance the abundance of natural enemies as well as the level of biological pest control services in vineyard agroecosystems. Diverse cover crops mostly benefit natural enemies and biological pest control in simplifiedThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Benefits of increased cover crop diversity for predators and biological pest control depend on the landscape context

Beaumelle

Auriol

Grasset

et al. 2021

Ecol Sol and Evidence

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“…The study took place in 15 pairs of organically and conventionally managed vineyards in Rhine-Hesse, Germany (see [65][66][67]). Conventional management was applied according to the standards of integrated pest management (EU Directive 2009/128/EC).…”

Section: Study Sitesmentioning

confidence: 99%

“…Vineyard pairs were at least 1000 m apart from each other. Distances between each pair's organic and conventional vineyard ranged between 16 and 512 m (see Figure 1 in [66]). Within sites, every other inter-row was kept with a permanent vegetation cover while the other one was tilled once or twice per vegetation season (see [67] for more details on vegetation within sites).…”

Section: Study Sitesmentioning

confidence: 99%

Mutual and Opposing Responses of Carabid Beetles and Predatory Wasps to Local and Landscape Factors in Vineyards

Uzman

Entling

Leyer

et al. 2020

Insects

Self Cite

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Preserving agro-biodiversity is one of the main means at the moment to counteract the global biodiversity crisis. Vineyard inter-rows offer vegetation covers which could function as foraging grounds for arthropods. Furthermore, organic management and enhanced landscape complexity often support biodiversity. Here, species richness and abundance of two groups of arthropod predators in vineyards were studied. Fifteen pairs of organically and conventionally managed vineyards were chosen along a gradient of landscape complexity in Rhine-Hesse, Germany. Carabid beetles were sampled using pitfall traps and cavity-nesting wasps with trap nests, respectively. Proportions of different land-use types surrounding the vineyards were calculated and inter-row vegetation cover was characterized. Species richness and abundances of both predator groups were not significantly affected by the management system. Likewise, increased cover of semi-natural habitats in the surrounding landscape did not promote their diversity or abundance. Instead, the increasing cover of annual crops diminished both groups. Cavity-nesting wasps profited from dense inter-row vegetation cover, while carabids were disadvantaged. The results indicate that distinct taxa within the same trophic group can respond oppositely to vineyard management. Thus, inter-row vegetation management with densely and sparsely vegetated elements might be best to support predator diversity. Overall, our results suggest that organic viticulture alone is insufficient to assist the studied insect groups, and that other local and landscape management options are needed for their protection.

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“…Flower strips, often used as biocontrol elements in horticulture (Snyder 2019 ), are currently studied with respect to biodiversity of pollinators (Hicks et al 2016 ) but could be used for multiple IPM uses (Balzan et al 2016 ). In agricultural environments, semi-natural vegetation supported sustainable establishment of useful spiders in viticulture (Kolb et al 2020 ) and the securing of the availability of suitable and sufficient floral biodiversity was found to be a pre-requisite for natural enemies of apple pathogens (Herz et al 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Towards sustainable performance of urban horticulture: ten challenging fields of action for modern integrated pest management in cities

Feldmann

Vogler

2020

J Plant Dis Prot

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We identified ten current key challenges for plant protection in cities each of them belonging to a specific field of action of IPM in urban horticulture according to Directive 2009/128/EC. The challenges are: appropriate plant selection, microbiome engineering, nutrient recycling, smart, digital solutions, diversification of vegetation, avoidance of pesticide side effects on beneficials, biorational efficacy assessment, effective pest diagnosis, efficient outbreak control and holistic approaches. They are discussed on the background of the defined urban horticultural core sectors (a) public green infrastructure, including professional plant care, (b) professional field and greenhouse production systems and (c) non-professional private homegardens and allotments.

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Differential effects of semi-natural habitats and organic management on spiders in viticultural landscapes

Cited by 37 publications

References 45 publications

Benefits of increased cover crop diversity for predators and biological pest control depend on the landscape context

Benefits of increased cover crop diversity for predators and biological pest control depend on the landscape context

Mutual and Opposing Responses of Carabid Beetles and Predatory Wasps to Local and Landscape Factors in Vineyards

Towards sustainable performance of urban horticulture: ten challenging fields of action for modern integrated pest management in cities

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