Media type: E-Article Title: Calcareous grassland fragments as sources of bee pollinators for the surrounding agricultural landscape Contributor: Klaus, Felix [VerfasserIn]; Graß, Ingo [VerfasserIn] imprint: 29 January 2021 Published in: Global ecology and conservation ; 26(2021), Artikel-Nummer e01474, 11 Seiten Language: English DOI: 10.1016/j.gecco.2021.e01474 ISSN: 2351-9894 Identifier: Origination: Footnote: Access State: Open Access