JTBR89QU

2782

15 janvier 2021 10:05

15 janvier 2021 10:05

Restored habitats require long-term management to maintain biodiversity and ensure ecosystem functions. Management strategies are often developed for plant communities, including through seeding and disturbance management, but these actions are taken with a focus on plant dynamics and with little knowledge of the effects on non-plant organisms. Wild bees are often expected to respond to such management actions via their effects on local floral resource availability, but management may also affect bees by altering survival and nesting independently of plant community responses. Working in restoration plantings within a large, actively managed tallgrass prairie preserve, we separated the effects of management and landscape context on bee community abundance and richness from the effects of these covariates on bees mediated through the abundance and richness of the local flowering plant community. We found that bees responded primarily to disturbance management (via bison) and the amount of prairie and forest habitat in the landscape, indicating that across landscapes with relatively abundant flowers and nest-sites, these landscape-level resources are more important than local floral resources for structuring bee communities. In contrast, floral communities responded to restoration age and prescribed burning. Because bees respond to different factors and at a different landscape scale than local plant communities, we conclude that management designed for plants is not sufficient for pollinators. Landscape level restoration may therefore require targeted habitat design and management to successfully restore functionally important animals.

None

• AB - Utile à l'AB
• FREDO durabilité
• FREDO environnement
• GEO Etats-Unis
• biodiversité

• apoidea
• grasslands
• grazing
• prescribed fire
• structural equation modelling

Basic and Applied Ecology

50

144-154

February 1, 2021

1 février 2021

10.1016/j.baae.2020.12.004 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique

1439-1791 L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.