Multi-scale study of bee diversity pattern and floral resource use in intensive agricultural landscape
type: Dataset
description: Bees are essential pollinators for crops and wild plants, but theintensification of agricultural practices have contributed to a significantdecline in their abundance and diversity. To effectively protect andpromote the bee fauna in agroecosystems, a better knowledge of theirdiversity patterns is required. The over-arching objective of this thesiswas to determine the spatial and temporal patterns of bee diversity andfloral resource use in an intensive agricultural system in western France.A spatially extensive survey of foraging wild bees and honey bees returned45.040 individual records at the territorial scale (29.314 honey bees and15.726 wild bees), representing 192 species, i.e. nearly 20% of the speciesrichness reported at the national scale. The bee community wascharacterised by a large proportion of uncommon species (28.8 %) and bysignificant temporal and spatial variations of the diversity, especially atlocal scales up to 10-20 km2. The importance of semi-natural habitats forsustaining wild bee populations was highlighted in this study. Duringoleaginous crop flowering periods, wild bees were tightly associated withsemi-natural habitats while honey bees have shown a clear preference formass-flowering crops. The diversity of foraging wild bees was 3-4 timesgreater in semi-natural habitats than in oilseed rape or sunflower fields.The importance of some keystone ecological correlates of bee diversity,such as the local floral richness and the amount of semi-natural habitatsin the vicinity, has been confirmed and quantified. It was also evidencedthat their effect varies among seasons and spatial scales. These resultshighlight the ecological processes underlying bee diversity patterns atdifferent spatial scales, and further help to optimise the efficiency ofconservation measures intended to promote bee diversity in intensiveagrosystems.
landing page: https://theses.hal.science/tel-00993034
identifier: NNT: 2013AVIG0654
keyword: abeilles
keyword: additive-diversity-partitioning
keyword: agrosystem
keyword: agrosysteme
keyword: alpha-diversity
keyword: bees
keyword: beta-diversity
keyword: composition-du-paysage
keyword: courbe-daccumulation-despeces
keyword: cultures-entomophiles
keyword: diversite-alpha
keyword: diversite-beta
keyword: habitats-semi-naturels
keyword: inference-multi-modele
keyword: infoeu-reposemanticsdoctoralthesis
keyword: landscape-composition
keyword: mass-flowering-crop
keyword: multimodel-inference
keyword: partitionnement-additif-de-la-diversite
keyword: relation-aire-espece
keyword: richesse-specifique
keyword: sdvbalife-sciences-q-bioanimal-biology
keyword: sdvsalife-sciences-q-bioagricultural-sciences
keyword: semi-natural-habitat
keyword: spatio-temporal-turnover
keyword: species-accumulation-curve
keyword: species-area-relationship
keyword: species-richness
keyword: theses
keyword: variations-spatio-temporelles
issued: 2026-05-05T10:53:13.795533
modified: 2026-05-05T10:53:13.795537
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Multi-scale study of bee diversity pattern and floral resource use in intensive agricultural landscape
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00993034
issued: 2026-05-05T10:53:13.798380
modified: 2026-05-05T10:53:13.757880