Abstract:The water quality has degraded with economic development globally. However, the relationship between food-web structure and nitrogen and phosphorus is of rare concern. To study food chain in this ecosystem, we measured the concentrations of stable isotope value δ 13 C and δ 15 N in aquatic matter and organisms in Pearl River. The δ 13 C and δ 15 N concentrations ranged from −41.2‰ to −19.4‰ and from 0.81‰ to 25.4‰, respectively. The δ 13 C concentrations in consumers were significantly higher than the particul… Show more
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