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Kells, Andrea R; Holland, John M.; Goulson, Dave

doi:10.1023/a:1013307822575

Cited by 97 publications

(18 citation statements)

References 37 publications

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“…Each bee species carried a unique range of plant genera (Table 3), similar to previous studies which have identified differences in floral preferences between pollinator species (Geslin et al, 2013; Kells, Holland & Goulson, 2001; Leonhardt & Blüthgen, 2012). The largest number of plant genera were detected on B. terrestris and the smallest number on Halictidae spp., although it should be noted that this pattern reflects the number of individuals sampled for each species.…”

Section: Discussionsupporting

confidence: 73%

“…Each of these genera established well and produced large quantities of flowers at the time of sampling. Phacelia in particular is a common component of wildflower mixes sown in agricultural margins, and is often a significant component of foraging on these margins, particularly for B. terrestris (Carreck & Williams, 1997; Kells, Holland & Goulson, 2001; Pywell et al, 2005). Members of family Asteraceae are the plants most visited by small bees in agricultural margins (Wood, Holland & Goulson, 2017).…”

Section: Discussionmentioning

confidence: 99%

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Pollen metabarcoding reveals broad and species-specific resource use by urban bees

Potter

Jones

Ford

et al. 2019

PeerJ

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Bee populations are currently undergoing severe global declines driven by the interactive effects of a number of factors. Ongoing urbanisation has the potential to exacerbate bee declines, unless steps are taken to ensure appropriate floral resources are available. Sown wildflower strips are one way in which floral resources can be provided to urban bees. However, the use of these strips by pollinators in urban environments remains little studied. Here, we employ pollen metabarcoding of the rbcL gene to compare the foraging patterns of different bee species observed using urban sown wildflower strips in July 2016, with a goal of identifying which plant species are most important for bees. We also demonstrate the use of a non-destructive method of pollen collection. Bees were found to forage on a wide variety of plant genera and families, including a diverse range of plants from outside the wildflower plots, suggesting that foragers visiting sown wildflower strips also utilize other urban habitats. Particular plants within the wildflower strips dominated metabarcoding data, particularly Papaver rhoeas and Phacelia tanacetifolia. Overall, we demonstrate that pollinators observed in sown wildflower strips use certain sown foodplants as part of a larger urban matrix.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Pollen metabarcoding reveals broad and species-specific resource use by urban bees

Potter

Jones

Ford

et al. 2019

PeerJ

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“…Third, and surprisingly, increased crop diversity had a consistently negative impact on bee abundance across regions. [22,47], but the role of crop-crop borders is rarely considered independently of the area of semi-natural crop borders. However, they provide potentially more flowering weeds compared with the field interior due to less intensive management and can be moved much more easily than semi-natural crop borders which are usually permanent habitats.…”

Section: Discussionmentioning

confidence: 99%

Landscape configurational heterogeneity by small-scale agriculture, not crop diversity, maintains pollinators and plant reproduction in western Europe

et al. 2018

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Agricultural intensification is one of the main causes for the current biodiversity crisis. While reversing habitat loss on agricultural land is challenging, increasing the farmland configurational heterogeneity (higher field border density) and farmland compositional heterogeneity (higher crop diversity) has been proposed to counteract some habitat loss. Here, we tested whether increased farmland configurational and compositional heterogeneity promote wild pollinators and plant reproduction in 229 landscapes located in four major western European agricultural regions. High-field border density consistently increased wild bee abundance and seed set of radish (), probably through enhanced connectivity. In particular, we demonstrate the importance of crop-crop borders for pollinator movement as an additional experiment showed higher transfer of a pollen analogue along crop-crop borders than across fields or along semi-natural crop borders. By contrast, high crop diversity reduced bee abundance, probably due to an increase of crop types with particularly intensive management. This highlights the importance of crop identity when higher crop diversity is promoted. Our results show that small-scale agricultural systems can boost pollinators and plant reproduction. Agri-environmental policies should therefore aim to halt and reverse the current trend of increasing field sizes and to reduce the amount of crop types with particularly intensive management.

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“…Hedgerows are key elements in agricultural landscapes (Sommaggio 1999;Kells et al 2001;Benton et al 2003;Vergara & Badano 2009), providing important habitat and foraging resources for many predators and parasitoid arthropods, many of them capable to control pest populations (Maudsley et al 2002;Peńa et al 2003;Hannon & Sisk 2009, Krewenka et al 2011Veres et al 2013). The insect-pollinated shrub and herb species in the hedgerows provide pollen and nectar resources for pollinator insects, increasing local biodiversity and enhance crucial ecosystem services such as pollination within the agricultural landscape (Kleijn & Langevelde 2006;Rands & Whitney 2010;Kovács-Hostyánszky et al 2013).…”

Section: R Földesi and A Kovács-hostyánszkimentioning

confidence: 99%

Hoverfly (Diptera: Syrphidae) community of a cultivated arable field and the adjacent hedgerow near Debrecen, Hungary

Földesi

Kovács‐Hostyánszki

2014

Biologia

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A hoverfly (Syrphidae) community was investigated in a cultivated wheat field and the adjacent hedgerow near Debrecen (Hungary). We monitored the change of species richness and abundance of hoverflies along three transects in the hedgerow and in the wheat field in different distances (10 m, 20 m) from the hedgerow. The effect of sampling methods on the number of hoverfly species and individuals was analyzed. Two sampling methods were used to catch hoverflies: netting and pan traps. The whole sampling period was divided into three subperiods, which are early (22 nd April -2 nd June), middle (11 th June -1 st August) and late (6 th August -11 th September). Altogether 1,214 individuals of 22 species were sampled. Fourteen species with 78% of individuals belonged to the aphidophagous group, feeding on aphids as larvae. Altogether 861 individuals of 22 hoverfly species were sampled by netting and 353 individuals of 10 species by pan traps. The total number of hoverfly species was significant lower in the late period than in the early. The total abundance was higher in the middle period compared to the early. The species richness and abundance of aphidophagous species followed a similar pattern as the total species values. The species richness and abundance of hoverflies were significant higher in 10 m and 20 m distance in the wheat field than along the hedgerow. The results suggest that the pan traps were less efficient in the hedgerow than the netting, but in the wheat field they sampled more hoverflies because of visually alluring effect on hoverflies in the absence of flowers.

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Cited by 97 publications

References 37 publications

Pollen metabarcoding reveals broad and species-specific resource use by urban bees

Pollen metabarcoding reveals broad and species-specific resource use by urban bees

Landscape configurational heterogeneity by small-scale agriculture, not crop diversity, maintains pollinators and plant reproduction in western Europe

Hoverfly (Diptera: Syrphidae) community of a cultivated arable field and the adjacent hedgerow near Debrecen, Hungary

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