, ? Haies et lisières de bois contribuent à soutenir une diversité d'abeilles sauvages ? Prairies en fleur fournissent de nombreuses ressources à cette période là => Quelle contribution de chaque habitat semi-naturel à d'autres périodes ?, Prochaine étape : suivi temporel des ressources fournies par chaque type d'HSN CONCLUSION & PERSPECTIVES Mélanie ROY

A. M. Bartual, « The potential of different semi-natural habitats to sustain pollinators and natural enemies in European agricultural landscapes, Ecosystems & Environment, vol.279, pp.43-52, 2019.

A. Baselga, « Partitioning the Turnover and Nestedness Components of Beta Diversity: Partitioning Beta Diversity, Global Ecology and Biogeography, vol.19, issue.1, pp.134-177, 2010.

D. Goulson, E. Nicholls, C. Botias, and E. L. Rotheray, « Bee Declines Driven by Combined Stress from Parasites, Pesticides, and Lack of Flowers, Science, vol.347, issue.6229, pp.1255957-1255957, 2015.

C. M. Kennedy, « A Global Quantitative Synthesis of Local and Landscape Effects on Wild Bee Pollinators in Agroecosystems, Ecology Letters, vol.16, issue.5, pp.584-99, 2013.

E. Öckinger and H. G. Smith, « Semi-Natural Grasslands as Population Sources for Pollinating Insects in Agricultural Landscapes », Journal of Applied Ecology, vol.44, issue.1, pp.50-59, 2007.

H. Roulston, K. Et, and . Goodell, « The Role of Resources and Risks in Regulating Wild Bee Populations, Annual Review of Entomology, vol.56, issue.1, pp.293-312, 2011.

P. Westrich, « Habitat requirements of central European bees and the problems of partial habitats, Linnean Society Symposium Series, vol.18, 1996.