Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis

朱国平; 张海亭; 杨洋; 王少琴; 魏联; 杨清源

doi:10.1007/s00343-018-6340-5

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Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis

Chemistry | Updated：2023-05-19

- Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis
- Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis
- 海洋湖沼学报（英文） 2018年36卷第3期页码：717-725
- Affiliations：
  
  1.College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
  2.National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China
  3.Polar Marine Ecosystem Group, Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China
- Author bio：
  
  ZHU Guoping, gpzhu@shou.edu.cn
- Funds：
  
  the Sub-project under National Science & Technology Support Plan(2013BAD13B03);the National Natural Science Foundation of China(41776185);the Special Fund for Agroscientific Research in the Public Interest(201203018)
- DOI：10.1007/s00343-018-6340-5
  中图分类号：
- 收稿：2017-01-04，
  
  录用：2017-4-12，
  
  网络首发：2017-05-17，
  
  纸质出版：2018-05
- Accepted：
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朱国平, 张海亭, 杨洋, 等. Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis[J]. 海洋湖沼学报（英文）, 2018,36(3):717-725.

Guoping ZHU, Haiting ZHANG, Yang YANG, et al. Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(3): 717-725.
朱国平, 张海亭, 杨洋, 等. Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis[J]. 海洋湖沼学报（英文）, 2018,36(3):717-725. DOI： 10.1007/s00343-018-6340-5.

Guoping ZHU, Haiting ZHANG, Yang YANG, et al. Upper trophic structure in the Atlantic Patagonian shelf break as inferred from stable isotope analysis[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(3): 717-725. DOI： 10.1007/s00343-018-6340-5.

摘要

Abstract

The Patagonian Shelf is a very productive region with different ecosystem structures. A long history of fishing in the Southwestern Atlantic Ocean combined with a complex hydrographic structure

with a permanent front over the shelf-break and different coastal frontal regions

and a wide non-frontal area in between have made the food web in this area more complex and have resulted in changes to the spatialtemporal scale. Stable isotopes of carbon and nitrogen were used to determine the trophic structure of the Patagonian shelf break which was previously poorly understood. The results indicated that the average δ

N value of pelagic guild (

Illex argentinus

) was remarkable lower than those of the other guilds. The δ

C values of almost all species ranged from -17‰ to -18‰

but

Stromateus brasiliensis

had a significant lower δ

C value. Compared with the southern Patagonian shelf

short food chain length also occurred. The impact of complex oceanographic structures has resulted in food web structure change to the temporal-spatial scale on the Patagonian shelf. The Patagonian shelf break can be considered as a separated ecosystem structure with lower δ

N values.

关键词

Keywords

references

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