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- W2794035429 abstract "The isotopic (δ 13 C and δ 15 N) and stoichiometric (C:N:P) compositions of four fish species (Family Centrarchidae: Lepomis auritus , Lepomis cyanellus ; Family Cyprinidae: Nocomis leptocephalus , Semotilus atromaculatus ) were examined across four North Carolina Piedmont streams arrayed along an urbanization gradient. Both isotopic and stoichiometric composition of fishes appeared to track changes occurring in basal resource availability. Values of δ 13 C of basal resources and consumers were more enriched at the most urbanized streams. Similarly, basal resources and consumers were δ 15 N–enriched at more urbanized streams. Basal resource stoichiometry varied across streams, with periphyton being the most variable. Primary consumers stoichiometry also differed across streams. Intraspecific variation in fish stoichiometry correlated with the degree of urbanization, as the two cyprinids had higher N content and L. cyanellus had higher P content in more urbanized streams, probably due to enrichment of basal resources. Intrinsic factors, specifically species identity and body size also affected stoichiometric variation. Phosphorus (P) content increased significantly with body size in centrarchids, but not in cyprinids. These results suggest that although species identity and body size are important predictors of elemental stoichiometry, the complex nature of altered urban streams may yield imbalances in the elemental composition of consumers via their food resources." @default.
- W2794035429 created "2018-03-29" @default.
- W2794035429 creator A5014128656 @default.
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- W2794035429 date "2018-03-07" @default.
- W2794035429 modified "2023-10-06" @default.
- W2794035429 title "Correlates of elemental-isotopic composition of stream fishes: the importance of land-use, species identity and body size" @default.
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- W2794035429 doi "https://doi.org/10.1111/jfb.13554" @default.
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