Processes controlling the benthic food web of a mesotrophic bight (KwaZulu-Natal, South Africa) revealed by stable isotope analysis

2013 ◽  
Vol 484 ◽  
pp. 97-114 ◽  
Author(s):  
AM De Lecea ◽  
ST Fennessy ◽  
AJ Smit
Keyword(s):  
South Africa ◽  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Benthic Food Web ◽  
Kwazulu Natal ◽  
Benthic Food

Stable isotope analysis reveals partitioning in prey use by Kajikia audax (Istiophoridae), Thunnus albacares, Katsuwonus pelamis, and Auxis spp. (Scombridae) in the Eastern Tropical Pacific of Ecuador

2021 ◽  
Vol 19 (4) ◽  
Author(s):  
Rigoberto Rosas-Luis ◽  
Nancy Cabanillas-Terán ◽  
Carmen A. Villegas-Sánchez
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Trophic Ecology ◽  
Isotope Analysis ◽  
Middle Level ◽  
Food Sources ◽  
Thunnus Albacares ◽  
Katsuwonus Pelamis ◽  
Δ13c And Δ15n

Abstract Kajikia audax, Thunnus albacares, Katsuwonus pelamis, and Auxis spp. occupy high and middle-level trophic positions in the food web. They represent important sources for fisheries in Ecuador. Despite their ecological and economic importance, studies on pelagic species in Ecuador are scarce. This study uses stable isotope analysis to assess the trophic ecology of these species, and to determine the contribution of prey to the predator tissue. Isotope data was used to test the hypothesis that medium-sized pelagic fish species have higher δ15N values than those of the prey they consumed, and that there is no overlap between their δ13C and δ15N values. Results showed higher δ15N values for K. audax, followed by T. albacares, Auxis spp. and K. pelamis, which indicates that the highest position in this food web is occupied by K. audax. The stable isotope Bayesian ellipses demonstrated that on a long time-scale, these species do not compete for food sources. Moreover, δ15N values were different between species and they decreased with a decrease in predator size.

Food web structure of a shallow eutrophic lake (Lake Taihu, China) assessed by stable isotope analysis

Hydrobiologia ◽  
2011 ◽  
Vol 683 (1) ◽  
pp. 173-183 ◽  
Author(s):  
Zhigang Mao ◽  
Xiaohong Gu ◽  
Qingfei Zeng ◽  
Luhong Zhou ◽  
Mingbo Sun
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Lake Taihu ◽  
Isotope Analysis ◽  
Eutrophic Lake ◽  
Food Web Structure ◽  
Web Structure ◽  
Shallow Eutrophic Lake

Food web structure prior to and following construction of artificial reefs, based on stable isotope analysis

2020 ◽  
Vol 37 ◽  
pp. 101354 ◽  
Author(s):  
Zhipeng Zhang ◽  
Mingqi Wang ◽  
Jingjing Song ◽  
Wenxi Zhao ◽  
Daode Yu ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Artificial Reefs ◽  
Food Web Structure ◽  
Web Structure

Trophic relationships in a tropical stream food web assessed by stable isotope analysis

2009 ◽  
Vol 54 (5) ◽  
pp. 1028-1041 ◽  
Author(s):  
SOPHIE COAT ◽  
DOMINIQUE MONTI ◽  
CLAUDE BOUCHON ◽  
GILLES LEPOINT
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Trophic Relationships ◽  
Tropical Stream

Stable isotope analysis of a newly established macrofaunal food web 1.5years after the Hebei Spirit oil spill

2015 ◽  
Vol 90 (1-2) ◽  
pp. 167-180 ◽  
Author(s):  
Eunah Han ◽  
Hyun Je Park ◽  
Leandro Bergamino ◽  
Kwang-Sik Choi ◽  
Eun Jung Choy ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Oil Spill ◽  
Stable Isotope Analysis ◽  
Isotope Analysis

A seasonal survey of the food web in the Lapalme Lagoon (northwestern Mediterranean) assessed by carbon and nitrogen stable isotope analysis

2007 ◽  
Vol 73 (1-2) ◽  
pp. 299-315 ◽  
Author(s):  
Antoine Carlier ◽  
Pascal Riera ◽  
Jean-Michel Amouroux ◽  
Jean-Yves Bodiou ◽  
Karine Escoubeyrou ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen ◽  
Northwestern Mediterranean
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