Habitat restoration
Flower-rich, mixed landscapes support more pollinators
Open access · cc by · source: Europe PMC
Across 20 natural communities, wild pollinator abundance rose with local flower richness and landscape heterogeneity, linking land-use homogenization to weaker pollination networks.
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Flower-rich, mixed landscapes support more pollinators
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Authors recorded 9635 pollinator visits on 20 sites.
we recorded 9635 visits of pollinators to flowers: 6983 by beetles (24 families, 78 species), 1136 by wild bees (five families, 67 species), 1276 by flies (33 families, 125 species), 142 by wasps (17 families, 44 species), 98 by butterflies (eight families, 24 species), and 1370 by honeybees.
They used data on 20 natural plant–pollinator communities.
we used data on 20 natural plant–pollinator communities along gradients of landscape heterogeneity and flower richness.
Key findings
Mean wild pollinator richness was ~48 standardized species per site (40–88 raw). Abundance increased with flower richness and (marginally) landscape heterogeneity at 1 km. Networks and diets also shifted along those resource-diversity gradients.
Methodology
Authors surveyed 20 plant–pollinator communities along gradients of 1 km landscape heterogeneity and local flower richness, recording 9,635 visits and building networks of wild bees, flies, beetles, and other guilds (honeybees present but relatively scarce).
Limitations
Twenty sites in one region cannot prove a global pollinator collapse or a specific restoration recipe, and honeybee effects were limited by low hive abundance.
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