Investigating trophic level variability in Celtic Sea fish predators

• Published in: Journal of Fish Biology
• Main Authors: Chassot, Emmanuel, Rouyer, Tristan, Trenkel, Verena M., Gascuel, Didier
• Other Authors: Laboratoire d'Ecologie Halieutique - Agrocampus Ouest, Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, UMR 212 EME "écosystèmes marins exploités" (EME), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM), Écologie et Modèles pour l'Halieutique (EMH), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2008
• Subjects: food web; GAM; indicator; omnivory; predation; trophic level; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; Gam; Hake; atlantic cod; Gadus morhua
• Online Access: https://hal.ird.fr/ird-00548995; https://hal.ird.fr/ird-00548995/document; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig-captions-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig1-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig2-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig3-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig4-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig5-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-fig6-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-MS-JFB-final-cor-edition.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-Tab1-cor.pdf; https://hal.ird.fr/ird-00548995/file/Chassot_al-Tab2-cor.pdf; https://doi.org/10.1111/j.1095-8649.2008.01938.x

The trophic level (TL) mean and variance, and the degree of omnivory for five Celtic Sea fish predators were estimated using a database of stomach content records characterized by a high level of taxonomic resolution. The predators occupied a high position in the food web, i.e. 4.75 for Atlantic cod...