{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T03:49:31Z","timestamp":1791431371605,"version":"4.3.3"},"reference-count":69,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"am","delay-in-days":16,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"vor","delay-in-days":16,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100000155","name":"Division of Environmental Biology","doi-asserted-by":"publisher","award":["2237529"],"award-info":[{"award-number":["2237529"]}],"id":[{"id":"10.13039\/100000155","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ecology and Evolution"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Colonization of new environments can spur floral evolution when plants encounter novel selective regimes such as unique pollinator communities. Although edaphic transitions are frequently associated with floral diversification, the extent to which pollinators mediate such divergence remains poorly understood. A generalist\u2010pollinated granite outcrop endemic,\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Phacelia dubia<\/jats:italic>\n                    <\/jats:styled-content>\n                    , colonized ruderal meadow\u2010like roadsides and lawns within the last ~60\u2009years in the Southeastern United States. We quantified flower color (blue chroma) and size in outcrops and meadows in the field and greenhouse, characterized pollinator communities, and measured pollination efficiencies of common pollinators. We tested whether edaphic transitions restructure generalist pollination systems and contribute to floral divergence consistent with the Grant\u2013Stebbins model of floral evolution. Flowers in natal outcrops were darker on average, and more variable among populations than meadows\u2014outcrop populations were either predominantly purple or white\u2010flowered, while meadows were consistently white\u2010flowered. There was a strong genetic contribution to color divergence among populations. Family\u2010level pollinator composition differed between habitats and correlated with color, especially when weighted by pollinator efficiencies. Pairwise pollinator community distance was positively correlated with flower color distance, and this was strongest for between\u2010habitat comparisons. Spatial variation in the relative abundance of the most effective pollinators (Megachilidae, Apidae) predicted color variation better than more common but less effective pollinators (Andrenidae, Syrphidae). Our study supports that edaphic transitions can expose plant populations to novel pollinator communities and create opportunities for floral evolution. Geographic variation in the most effective pollinators predicted flower color variation, providing support for the Grant\u2013Stebbins \u201cmost effective pollinator\u201d principle in a plant with generalized insect pollination.\n                  <\/jats:p>","DOI":"10.1002\/ece3.74360","type":"journal-article","created":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T01:19:23Z","timestamp":1789694363000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Most Effective Pollinators Predict Intraspecific Floral Color Diversity Across an Edaphic Matrix"],"prefix":"10.1002","volume":"16","author":[{"given":"Katherine E.","family":"Riddle","sequence":"first","affiliation":[{"name":"Department of Biological Sciences Clemson University  Clemson South Carolina USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taylor N.","family":"Sherer","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences Clemson University  Clemson South Carolina USA"},{"name":"Department of Environmental Horticulture University of Florida  Gainesville Florida USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jenna","family":"McCarty","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences Clemson University  Clemson South Carolina USA"},{"name":"School for Environment and Sustainability, University of Michigan  Ann Arbor Michigan USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stacy","family":"Taylor\u2010Bennetts","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences Augusta University  Augusta Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0274-3145","authenticated-orcid":false,"given":"Matthew H.","family":"Koski","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences Clemson University  Clemson South Carolina 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