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Sown wildflower areas are increasingly recommended as an agri-environmental intervention measure, but evidence for their success is limited to particular insect groups or hampered by the challenges of establishing seed mixes and maintaining flower abundance over time. We conducted a replicated experiment to establish wildflower areas to support insect pollinators in apple orchards. Over three years, and across 23 commercial UK orchards with and without sown wildflowers, we conducted 828 transect surveys across various non-crop habitats. We found that the abundance of flower-visiting solitary bees, bumblebees, honeybees, and beetles was increased in sown wildflower areas, compared with existing non-crop habitats in control orchards, from the second year following floral establishment. Abundance of hoverflies and other non-syrphid flies was increased in wildflower areas from the first year. Beyond the effect of wildflower areas, solitary bee abundance was also positively related to levels of floral cover in other local habitats within orchards, but neither local nor wider landscape-scale context affected abundance of other studied insect taxa within study orchards. There was a change in plant community composition on the sown wildflower areas between years, and in patterns of flowering within and between years, showing a succession from unsown weedy species towards a dominance of sown species over time. We discuss how the successful establishment of sown wildflower areas and delivery of benefits for different insect taxa relies on appropriate and reactive management practices as a key component of any such agri-environment scheme.

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• Conclusive statements about how organisms and biological communities fared after the Deepwater Horizon accident are still difficult to make nearly a decade after the spill. Much of the work on organisms and their habitats will continue for years to come, and some of the impacts will only be apparent with long-term study. • Scientists have learned, and will continue to learn, important lessons by studying the impacts of the largest accidental oil spill in history on marine habitats and life in the Gulf of Mexico, such as impacts on large vertebrates (fish, cetaceans, birds), deep-sea organisms, phytoplankton and other marine microbes, coastal and pelagic fishes, and marsh plants and animals. Gulf of Mexico Research Initiative (GoMRI) researchers are finding that sublethal impacts (those that do not immediately kill the animal, but affect its feeding habits, navigation, gene expression, and/or reproduction) are important, and understanding them provides critical insight about longerterm, population-level impacts of the spill on marine life. • One of the most valuable lessons from this accident has been that it is critically important to collect baseline data for ecosystems, in particular those which are most at risk of impact by industrial activities, and GoMRI researchers are helping to contribute to this body of knowledge. • Researchers developed innovative ways to investigate the impacts of oil on many different organisms and habitats. An associated activity provides students the opportunity to conduct their own virtual experiment on two species of fish, assessing changes in swim behavior and vision after oil exposure with "fish treadmills."

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