Details

Autor(en) / Beteiligte

• Cui, Jing-Guo
• Shan, Bao-Qing
• Wang, Shuai

Titel

Ecological stoichiometric relationships of periphyton community elemental composition and variations of water quality in the Chaobai River

Ist Teil von

• Huanjing kexue, 2012-04, Vol.33 (4), p.1108

Ort / Verlag

China

Erscheinungsjahr

2012

Quelle

MEDLINE

Beschreibungen/Notizen

• Carbon (C), Nitrogen (N) and Phosphorus (P) of water and periphyton were analyzed in the Chaobai River to investigate how anthropogenic river pollution affected the periphyton community and its elemental composition. The results of this study showed that NH4(+) -N and NO(x)(-) -N accounted for 52%, 28% of TN in the Chaobai River, respectively, while 1.6%, 38% of TN in the Baihe River. TP concentration in the former (0.104 mg x L(-1)) was 21 times higher than the latter (0.005 mg x L(-1)). Coefficient of variation (CV) of periphyton C, N and P in the Chaobai River and Baihe River were 0.55, 0.41, 0.62 and 0.24, 0.13, 0.18, respectively. This indicated great variations of periphyton elemental composition in the Bai River than in the Chaobai River. Binary logistic analysis was used to determine factors that affect periphyton distribution. TOC, TN, NO(x)(-) -N, NH4(+) -N, TP, pH, ORP and conductivity were used in this analysis and the result showed that TP was the key factor which can interpret 87.3% of the corre