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Principal Component Analysis performed on the landscape and habitat characteristics of springs. (a) Relationships between the environmental variables (see Tab. 1 for abbreviation codes). (b) Location of sites in the C1 × C2 plan. (c) Invertebrate assemblage characteristics added as supplementary material (Abund = abundances, Asex = percentage of species with a potential asexual reproduction, DF = deposit feeders, H′ = Shannon diversity index, HD = percentage of species with a high dispersal ability, PRD = predators, Rich = taxonomic richness, SCR = scrapers that fed on microphytes, Sex = species with an obligate sexual reproduction, SHR = shredders, WD = percentage of species with a weak dispersal ability).
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