A survey and review of the status of wild bees in the West-Palaearctic region

Patiny, Sébastien; Rasmont, Pierre; Michez, Denis

doi:10.1051/apido/2009028

Cited by 40 publications

(30 citation statements)

References 72 publications

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“…In the latter, 59 % of honeybee hives disappeared in just 61 years. The decline in the wild bee populations over the past 120 years has been established using historic datasets (Burkle et al 2013), and in Europe, 37-65 % of bee species are of conservation concern (Patiny et al 2009). Many plant species, most of which are weeds, found in natural and semi-natural habitats are food resources for honeybees (Requier et al 2015) as well as wild, solitary bees.…”

Section: Collapses In Wild and Domestic Bee Populations In Farmlandsmentioning

confidence: 99%

Weeds for bees? A review

Bretagnolle

Gaba

2015

Agron. Sustain. Dev.

250

126

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Agricultural intensification has led to the decrease of the diversity of wild and domestic pollinators. For instance, honeybees declined by 59 % in 61 years in the USA. About 35 % of major crops in the world depend on pollination services, and 3-8 % of world crop production will disappear without pollinators. Indeed, pollination provides several ecosystem services such as enabling crop and honey productions, regulating weeds and other cultural services. Agricultural intensification has also decreased weed diversity by about 50 % in 70 years because massive herbicide sprays have reduced the competition between weeds and crops. Nevertheless, weeds are at the basis of agricultural foodwebs, providing food to many living organisms. In particular, weeds provide flowers for pollinating insects including honey and wild bees. Here, we review the decline of weeds and bees. We discuss the effect of bees and pollination on crop production. We describe the complex interactions between bee pollinators, e.g. honey and wild bees, and landscape habitats such as crop fields and seminatural elements. For that, we focus on spatial and temporal effects on flower resources. We show that weed abundance can reduce crop yields, thus inducing conflict with farmers.But weed abundance enhances regulating services by ensuring the survival of honeybees in the absence of oil seed crops. Weed abundance also enhances pollination services and, in turn, honey yield for the benefit of beekeepers. Weed abundance has also improved the survival of wild flora and the socio-cultural value of landscapes, a major request from the public. From those findings, we present a conceptual framework allowing to define ecological engineering options based upon ecosystem services of weeds and pollinators.

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Section: Collapses In Wild and Domestic Bee Populations In Farmlandsmentioning

confidence: 99%

Weeds for bees? A review

Bretagnolle

Gaba

2015

Agron. Sustain. Dev.

250

126

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“…This paucity of large-scale studies reflects a shortage of comprehensive, taxonomically reliable distribution data for most geographic regions. Large-scale patterns of bee diversity and distribution and their primary determinants have been only partly described for relatively small sub-continental regions (Patiny and Michez 2007;Kuhlmann 2009;Patiny et al 2009a) or on a coarse country scale (Patiny et al 2009b;Leonhardt et al 2013;Nieto et al 2014), but are essential for identifying target areas for conservation actions and developing effective global strategies for bee conservation. So far, global distribution data have been analyzed for only a few large and conspicuous taxa (e.g.…”

Section: Introductionmentioning

confidence: 99%

Key environmental determinants of global and regional richness and endemism patterns for a wild bee subfamily

et al. 2017

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Reports of world-wide decline of pollinators, and of bees in particular, raise increasing concerns about maintenance of pollination interactions. While local factors of bee decline are relatively well known and potential mitigation strategies at the landscape scale have been outlined, the regional and continental-scale threats to bee diversity have only been marginally explored. Here we document large-scale spatial patterns for a representative bee subfamily, the determinants of its species richness, and assess major threats to these pollinators. Using a comprehensive global dataset of Colletinae (genera Colletes, also called ''polyester'' or ''cellophane'' bees for their underground nests lined with a polyester secretion, and Mourecotelles), a species-rich subfamily whose organismal and physiological ecology is representative of many bees, we measured species richness and endemism on global to continental scales. We explored the relationships between bee species richness and potential environmental stress factors grouped into three categories: contemporary climate, habitat heterogeneity, and anthropogenic pressure. Bees of the subfamily Colletinae demonstrate the reversed latitudinal gradient in species richness and endemism suggested for bees; the highest species richness of Colletinae was found between 30°and 50°latitude in both the northern and southern hemispheres. Centres of endemism largely overlapped with those of species richness. The importance of the Greater Cape Floristic Region, previously identified as a centre of richness and endemism of bees, 123Biodivers Conserv (2018Conserv ( ) 27:287-309 https://doi.org/10.1007Conserv ( /s10531-017-1432 was confirmed for Colletinae. On the global scale, present-day climate was a significant predictor of species richness as was flowering plant diversity represented by vascular plant species richness and centres of plant diversity. Our main conclusion is that climate change constitutes a potential threat to bee diversity, as does declining diversity of vascular plants. However, a significant overlap between centres of bee richness and plant diversity might increase chances for developing conservation strategies.

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“…Moreover, limited and sparse identification tools are available (Brown and Paxton 2009;Patiny et al 2009). The identification to species level is therefore dependent on the help of a panel of expert bee taxonomists, i.e.…”

Section: Bee Sampling and Identificationmentioning

confidence: 99%

“…Although long-term recording allowed the assessment of species trends in some countries (see e.g. Biesmeijer et al 2006;Ollerton et al 2014;Thomas et al 2015 for British studies based on bee records collected by the UK BWARS-Bees Wasps & Ants Recording Society), data are severely lacking regarding bee species distribution (Brown and Paxton 2009;Patiny et al 2009;Nieto et al 2014) and community composition (Winfree et al 2011) to understand the effects of global change on bee populations and thereby be able to design meaningful conservation strategies (Cardoso et al 2011).…”

Section: Bee Sampling and Identificationmentioning

confidence: 99%

An expert-assisted citizen science program involving agricultural high schools provides national patterns on bee species assemblages

Féon¹,

Henry²,

Guilbaud³

et al. 2016

J Insect Conserv

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dataset using data freely available at a national scale on agriculture intensity and landscape composition. We found that species richness increased with increasing proportion of herbaceous semi-natural elements; species dominance decreased with increasing crop diversity; the proportion of above ground nesting species and specimens increased as the intensity of agricultural practices decreased. Comparing the results obtained with identification to species level and those obtained with higher taxa or parataxonomic approaches, we found that the loss of taxonomic resolution resulted in the non-significance of some results on the effects of environmental variables on bee assemblage-level attributes. Our study suggests that identification to species level is of great importance to detect the effects of global change on bees and that an expert-assisted citizen science paradigm could provide relevant results to guide conservation measures at a national scale.

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A survey and review of the status of wild bees in the West-Palaearctic region

Cited by 40 publications

References 72 publications

Weeds for bees? A review

Weeds for bees? A review

Key environmental determinants of global and regional richness and endemism patterns for a wild bee subfamily

An expert-assisted citizen science program involving agricultural high schools provides national patterns on bee species assemblages

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