Stable Isotopes and Planktonic Trophic Structure in Arctic Lakes

Ecology ◽  
1992 ◽  
Vol 73 (2) ◽  
pp. 561-566 ◽  
Author(s):  
George W. Kling ◽  
Brian Fry ◽  
W. John O'Brien
Keyword(s):  
Stable Isotopes ◽  
Trophic Structure ◽  
Arctic Lakes

scholarly journals Application of Nitrogen and Carbon Stable Isotopes (δ15N and δ13C) to Quantify Food Chain Length and Trophic Structure

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e93281 ◽  
Author(s):  
Matthew J. Perkins ◽  
Robbie A. McDonald ◽  
F. J. Frank van Veen ◽  
Simon D. Kelly ◽  
Gareth Rees ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Chain Length ◽  
Food Chain ◽  
Trophic Structure ◽  
Carbon Stable Isotopes ◽  
Food Chain Length ◽  
Δ15n And Δ13c

The trophic structure of fish communities from streams in the Brazilian Cerrado under different land uses: an approach using stable isotopes

Hydrobiologia ◽  
2017 ◽  
Vol 795 (1) ◽  
pp. 199-217 ◽  
Author(s):  
Débora Reis de Carvalho ◽  
Diego M. Parreira de Castro ◽  
Marcos Callisto ◽  
Marcelo Zacharias Moreira ◽  
Paulo Santos Pompeu
Keyword(s):  
Stable Isotopes ◽  
Trophic Structure ◽  
Fish Communities ◽  
Land Uses ◽  
Brazilian Cerrado

Trophic structure in a pilot system for the integrated multi-trophic aquaculture off the east coast of Korean peninsula as determined by stable isotopes

2015 ◽  
Vol 95 (1) ◽  
pp. 207-214 ◽  
Author(s):  
Hyun Je Park ◽  
Eunah Han ◽  
Won Chan Lee ◽  
Jung Hyun Kwak ◽  
Hyung Chul Kim ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Korean Peninsula ◽  
Trophic Structure ◽  
East Coast

Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes

2016 ◽  
Vol 27 (S1) ◽  
pp. 191-199 ◽  
Author(s):  
Edoardo Calizza ◽  
Maria Letizia Costantini ◽  
David Rossi ◽  
Vittorio Pasquali ◽  
Giulio Careddu ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Digital Elevation Models ◽  
High Arctic ◽  
Arctic Lakes ◽  
Nutrient Inputs ◽  
Digital Elevation

Trophic structure of mesopelagic fishes in the western Mediterranean based on stable isotopes of carbon and nitrogen

2014 ◽  
Vol 138 ◽  
pp. 160-170 ◽  
Author(s):  
M. Valls ◽  
M.P. Olivar ◽  
M.L. Fernández de Puelles ◽  
B. Molí ◽  
A. Bernal ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Trophic Structure ◽  
Western Mediterranean ◽  
Carbon And Nitrogen

scholarly journals Trophic Structure of Neuston Across Tropical and Subtropical Oceanic Provinces Assessed With Stable Isotopes

2021 ◽  
Vol 7 ◽  
Author(s):  
Rui Albuquerque ◽  
Antonio Bode ◽  
Juan Ignacio González-Gordillo ◽  
Carlos M. Duarte ◽  
Henrique Queiroga
Keyword(s):  
Stable Isotopes ◽  
Trophic Structure ◽  
Nitrogen Isotopes ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Wide Range ◽  
Deep Layers ◽  
Diffusive Fluxes ◽  
Trophic Niches ◽  
Degree Of Overlap

The marine neuston, organisms living in the vicinity of the ocean surface, is one of the least studied zooplankton groups. Neuston occupies a restricted ecological niche and is affected by a wide range of endogenous and exogenous processes while also being a food source to zooplankton fish migrating from the deep layers and seabirds. In this study, the neustonic communities were characterized along the Malaspina global expedition sampling tropical and subtropical oceanic provinces using stable carbon and nitrogen isotopes to explore their trophic structure and relationships with environmental variables. The differences in stable isotopes mirrored the patterns in environmental characteristics of each province. High δ13C values were associated with atmospheric carbon inputs, while the presence of dinoflagellates, coccolithophorids, and upwelling influence is related to low δ13C values. Similarly, provinces presenting high δ15N values were associated with denitrification and nitrate diffusive fluxes, whereas the presence of low δ15N is attributable to nitrogen supplied through N2 fixation by diazotrophs. Neuston showed a large overlap among the isotopic niches of four functional groups, with chaetognaths and detritivores generally exhibiting a smaller degree of overlap compared to carnivores and omnivores/herbivores. These results support the hypothesis of a common trophic structure in the neuston community across the ocean. However, the size of the niche, small in coastal areas and those influenced by upwelling and large in oligotrophic regions, and their overlap, low in more productive provinces and high in oligotrophic provinces, may be associated with food availability. Small trophic niches are associated with a dominance of specialized over-opportunistic feeding in productive environments.

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