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. 2016 Aug 11;6:30897. doi: 10.1038/srep30897

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Copyright © 2016, The Author(s)

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(A) Principal components analysis (PCA) visualizing the multivariate fatty acid resource-library of experimentally fed Daphnia fed known basal end-members and the wild cladocerans collected in the study lakes. Each colored filled circles is the mean fatty acid profile of Daphnia fed a different basal taxon within each of the nine end-member groups [abbreviations: Actino (Actinobacteria); Crypto (Cryptophyceae); Cyano (Cyanophyceae); Diatom (Heterokontophyta); Dino (Dinophyceae); Golden (Synurophyceae); Green (Cryptophyceae); MOB (methane oxidizing bacteria); t-POM (terrestrial particulate organic matter, Plantae)]. Gray symbols are the fatty acid profiles of wild cladocerans collected in each of the 4 lake types. The total variation explained by each PC is displayed on the axes. PC3 (not presented) explained 12% of the total variation. (B) The contribution (Boxplots with median, 25^th and 75^th percentiles, with whiskers for 5^th and 95^th percentiles) of diet nutritional quality for Daphnia was divided into high (phytoplankton with EPA), intermediate (phytoplankton with high levels of ALA) and poor (low content of ω-3 fatty acids; Actinobacteria, MOB and t-POM) quality diets, as modeled by FASTAR.