Stable isotope composition of suspended particulate organic matter in twenty reservoirs from Guangdong, southern China: Implications for pelagic carbon and nitrogen cycling

2013 ◽  
Vol 47 (11) ◽  
pp. 3610-3623 ◽  
Author(s):  
Wei Hou ◽  
Binhe Gu ◽  
Qiuqi Lin ◽  
Jiguang Gu ◽  
Bo-Ping Han
Keyword(s):  
Organic Matter ◽  
Stable Isotope ◽  
Nitrogen Cycling ◽  
Particulate Organic Matter ◽  
Southern China ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Carbon And Nitrogen ◽  
Suspended Particulate ◽  
Suspended Particulate Organic Matter

scholarly journals Longitudinal variation characteristics of stable isotope ratios of suspended particulate organic matter in the headwaters of the Qingjiang River, China

2021 ◽  
pp. 7
Author(s):  
Jian Gao ◽  
Zehui Zhang ◽  
Ping Zhong ◽  
Cheng Yang ◽  
Mingjun Liao ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Stable Isotope ◽  
Particulate Organic Matter ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Suspended Particulate ◽  
The Mean ◽  
Suspended Particulate Organic Matter ◽  
Qingjiang River

To determine the sources and characteristics of suspended particulate organic matter (SPOM), the spatial distribution of carbon and nitrogen and their isotopic values (δ13C and δ15N) were measured from upstreamto downstream (i.e. site 1 to site 4) in the head waters of the Qingjiang River in central China. The mean annual SPOM δ15N and δ13C values varied between sites but exhibited a unimodal pattern. The mean annual δ15N increased from site 1 (2.5‰) to 3 (5.3‰), followed by a major decrease to 2.2‰ at site 4. Furthermore, the mean annual δ13C varied unimodally, being the most positiveat sites 1 (−21.6‰) and 4 (−22.8‰) followed by sites 2 (−24.5‰) and 3 (−26.4‰). In particular, the mean SPOM δ15N and δ13C in the tailwaters from a domestic wastewater treatment plant, which was located approximately 0.3 km upstream of site 4, were 2.2‰ and −25.6‰, respectively. The SPOM C/N values from stream water at site 4 (8.5 ± 1.5) and tailwater (6.2 ± 0.9) were similar. Collectively, the results suggested that wastewater treatment plant tailwater influenced the stable isotope values of SPOM in the stream and affected the variation trendfrom upstream to downstream.

scholarly journals Trophic Relationships and Habitat Preferences of Delphinids from the Southeastern Brazilian Coast Determined by Carbon and Nitrogen Stable Isotope Composition

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e82205 ◽  
Author(s):  
Tatiana Lemos Bisi ◽  
Paulo Renato Dorneles ◽  
José Lailson-Brito ◽  
Gilles Lepoint ◽  
Alexandre de Freitas Azevedo ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Habitat Preferences ◽  
Trophic Relationships ◽  
Brazilian Coast ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen
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