Primary study on food web of Jiangsu coastal salt marshes

OU Zhiji; JIANG Qiwu; ZUO Ping

doi:10.3969/j.issn.0253-4193.2013.01.017

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OU Zhiji, JIANG Qiwu, ZUO Ping. Primary study on food web of Jiangsu coastal salt marshes[J]. Haiyang Xuebao, 2013, 35(1): 149-157. doi: 10.3969/j.issn.0253-4193.2013.01.017

Citation:

OU Zhiji, JIANG Qiwu, ZUO Ping. Primary study on food web of Jiangsu coastal salt marshes[J]. Haiyang Xuebao, 2013, 35(1): 149-157. doi: 10.3969/j.issn.0253-4193.2013.01.017

OU Zhiji, JIANG Qiwu, ZUO Ping. Primary study on food web of Jiangsu coastal salt marshes[J]. Haiyang Xuebao, 2013, 35(1): 149-157. doi: 10.3969/j.issn.0253-4193.2013.01.017

Citation:

OU Zhiji, JIANG Qiwu, ZUO Ping. Primary study on food web of Jiangsu coastal salt marshes[J]. Haiyang Xuebao, 2013, 35(1): 149-157. doi: 10.3969/j.issn.0253-4193.2013.01.017

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Primary study on food web of Jiangsu coastal salt marshes

doi: 10.3969/j.issn.0253-4193.2013.01.017

1.
Key Laboratory of Coast and Island Development of Ministry of Education, Nanjing University, Nanjing 210093, China;Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China
2.
Key Laboratory of Coast and Island Development of Ministry of Education, Nanjing University, Nanjing 210093, China

Received Date: 2011-12-09
Rev Recd Date: 2012-04-25

Abstract

Abstract

It was analyzed that δ¹³C and δ¹⁵N of plants, animals and faeces, then built up a simplified salt marsh food web model in Yancheng coastal salt marshes, Jiangsu Province. The main results showed: (1) The δ¹³C value of primary producers are between-28.856×10^-3 and-10.952×10^-3, and the δ¹⁵N are between 1.219×10^-3 and 6.496×10^-3,with significant differences. The δ¹³C value of consumers are between -27.564×10^-3 and -11.641×10^-3, and the δ¹⁵N are between 4.462×10^-3 and 10.339×10^-3; (2) The ecosystem of Yancheng coastal marshes can be divided into intertidal sub-ecosystem and supratidal sub-ecosystem, and the main food source of supratidal belt is Phragmites australis, while in the intertidal belt are Spartina alterniflora and micro-algae, Saudea salva contributes to both the two sub-ecosystems but with low contribution; (3) Most of the large herbivorous mammals and benthic organisms in Yancheng coastal marshes occupy the second trophic level; (4) The animals living in Yancheng coastal marshes can be divided into 8 major ecological groups as herbivorous mammals, herbivorous insects, birds, fresh-water swimming animals, salt-water fishes, endofauna, epifauna and zooplankton. Therefore, the diversity of animal food composition of the intertidal belt was slightly higher than that of the supratidal belt. The food competition between intertidal animals was very intense, and the dominant species which overlapped on the bare belt have a slightadj food niche differentiation.
- stable carbon isotope,
- stable nitrogen isotope,
- costal salt marshes,
- food web

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