Global data set for nitrogen and carbon stable isotopes of tunas

Type Article
Date 2021-03
Language English
Author(s) Bodin NathalieORCID1, 2, Pethybridge Heidi3, Duffy Leanne M.4, Lorrain Anne5, Allain Valerie6, Logan John M.7, Ménard Frederic8, Graham Brittany9, Choy C. Anela10, Somes Christopher J.ORCID11, Olson Robert J.4, Young Jock W.3
Affiliation(s) 1 : Research Institute for Sustainable Development (IRD) Fishing Port Victoria Mahe ,Seychelles
2 : Sustainable Ocean Seychelles (SOS) BeauBelle Mahe ,Seychelles
3 : CSIRO Oceans and Atmosphere Hobart Tasmania ,Australia
4 : Inter‐American Tropical Tuna Commission (IATTC) La Jolla California, USA
5 : IRD, Univ Brest, CNRS, Ifremer, LEMAR Plouzané, France
6 : Pacific Community (SPC) Nouméa, New Caledonia
7 : Massachusetts Division of Marine Fisheries New Bedford Massachusetts ,USA
8 : Aix Marseille Univ, Univ Toulon, CNRS, IRD, MIO Marseille, France
9 : National Institute of Water and Atmospheric Research (NIWA) Wellington ,New Zealand
10 : Integrative Oceanography Division Scripps Institution of Oceanography University of California San Diego La Jolla California ,USA
11 : GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel ,Germany
Source Ecology (0012-9658) (Wiley), 2021-03 , Vol. 102 , N. 3 , P. e03265 (1p.)
DOI 10.1002/ecy.3265
Keyword(s) baseline isotopic variability, food web dynamics, Global Ocean, marine top predators, pelagic ecosystem, scombrids, trophic position
Abstract

Nitrogen and carbon stable isotope data sets are commonly used to assess complex population to ecosystem responses to natural or anthropogenic changes at regional to global spatial scales, and monthly to decadal timescales. Measured in the tissues of consumers, nitrogen isotopes (δ15N) are primarily used to estimate trophic position while carbon isotopes (δ13C) describe habitat associations and feeding pathways. Models of both δ15N and δ13C values and their associated variance can be used to estimate likely dietary contributions and niche width and provide inferences about consumer movement and migration. Stable isotope data have added utility when used in combination with other empirical data sets (e.g., stomach content, movement tracking, bioregionalization, contaminant, or fisheries data) and are increasingly relied upon in food web and ecosystem models. While numerous regional studies publish tables of mean δ15N and δ13C values, limited individual records have been made available for wider use. Such a deficiency has impeded full utility of the data which otherwise would facilitate identification of macroscale patterns. The data provided here consist of 4,498 records of individuals of three tuna species, Thunnus alalunga, T. obesus, and T. albacares sampled from all major ocean basins from 2000 to 2015. For each individual tuna we provide a record of the following: species name, sampling date, sampling location, tuna length, muscle bulk and baseline corrected δ15N values, and muscle bulk and, where available, lipid corrected δ13C values. We provide these individual records to support comparative studies and more robust modelling projects seeking to improve understanding of complex marine ecosystem dynamics and their responses to a changing environment. There are no copyright restrictions for research and/or teaching purposes. Users are requested to acknowledge their use of the data in publications, research proposals, websites and other outlets following the citation instructions in Class III, Section B.

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Bodin Nathalie, Pethybridge Heidi, Duffy Leanne M., Lorrain Anne, Allain Valerie, Logan John M., Ménard Frederic, Graham Brittany, Choy C. Anela, Somes Christopher J., Olson Robert J., Young Jock W. (2021). Global data set for nitrogen and carbon stable isotopes of tunas. Ecology, 102(3), e03265 (1p.). Publisher's official version : https://doi.org/10.1002/ecy.3265 , Open Access version : https://archimer.ifremer.fr/doc/00665/77750/