Cited by 820Isotope Analysis in EcologyMarine and fisheries researchMarine and coastal ecosystems

Food web structure on Georges Bank from stable C, N, and S isotopic compositions

Fry, Brian·1988·Limnology and Oceanography

Abstract

A combination of stable isotopic measurements was used to study food web structure of Georges Bank, an important northwestern Atlantic fishing ground. Particulate, invertebrate, and fish samples were analyzed to test δ13C, δ15N, and δ34S measurements as trophic‐level indicators in offshore systems. Neither sulfur nor carbon measurements proved valuable. Sulfur isotopic compositions showed little change with trophic level, and an apparent diversity of phytoplankton carbon isotopic inputs at the base of the food web complicated use of δ13C to estimate trophic position. Nitrogen isotopic distributions were, however, robust measures of trophic position and showed four broad trophic levels; unsampled large top carnivores may represent a fifth trophic level.

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Crossref · 10.4319/lo.1988.33.5.1182

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Authors
Fry, B.
Affiliations
Marine Biological Laboratory (US)
Corresponding author
Fry, Brian
Venue
Limnology and Oceanography
Publisher
Wiley
Published
1988-09
Volume
33
Issue
5
Pages
1182-1190
ISSN
  • 0024-3590 (ISSN-L)
  • 1939-5590
OpenAlex
W2159026875
Cited by
820
References
0
Citations by year
2026: 10 · 2025: 22 · 2024: 18 · 2023: 22 · 2022: 25 · 2021: 26 · 2020: 34 · 2019: 26 · 2018: 28 · 2017: 18 · 2016: 19 · 2015: 20 · 2014: 39 · 2013: 32 · 2012: 30
FWCI
14.91
Type
journal article
Language
en
Open access
closed
Locations
Limnology and Oceanography (publishedVersion)
Funders
  • National Science Foundation
  • U.S. Environmental Protection Agency
Topics
  • Physical Sciences › Environmental Science › Ecology › Isotope Analysis in Ecology
  • Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
Keywords
food web structure, trophic levels, stable isotopes, nitrogen isotopes, carbon isotopes, sulfur isotopes, Georges Bank, trophic position, top carnivores

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