FN Archimer Export Format
PT J
TI Seasonality in Southern Ocean isoscapes
BT 
AF St. John Glew, Katie
   Espinasse, Boris
   Hunt, Brian P. V.
   Pakhomov, Evgeny A
   Bury, Sarah J
   Pinkerton, Matt H
   Nodder, Scott D
   Gutierrez-Rodriguez, Andres
   Safi, Karl
   Brown, Julie C.S.
   Graham, Laura
   Dunbar, Robert B
   Mucciarone, David A.
   Magozzi, Sarah
   Somes, Christopher J.
   Trueman, clive
AS 1:1;2:2;3:3,4,5;4:3,4,5;5:6;6:6;7:6;8:6;9:7;10:6;11:8,9;12:10;13:10;14:11;15:12;16:1,13;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;
C1 School of Ocean and Earth Sciences, University of Southampton, National Oceanography Centre Southampton, European Way, Southampton, SO14 3UH, UK
   Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
   Institute for the Oceans and Fisheries, University of British Columbia, Vancouver BC, V6T 1Z4, Canada
   Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver BC, V6T 1Z4, Canada
   Hakai Institute, Tula Foundation, Heriot Bay BC, V0P 1H0, Canada
   National Institute of Water & Atmospheric Research Ltd (NIWA), Greta Point, 301 Evans Bay Parade, Hataitai, Wellington, New-Zealand, 6021
   National Institute of Water & Atmospheric Research Ltd (NIWA), Gate 10 Silverdale Road, Hillcrest, Hamilton 3216
   Geography, Earth and Environmental Sciences, University of Birmingham, UK
   Biodiversity, Ecology and Conservation Group, International Institute for Applied Systems Analysis, Austria
   Earth System Science, Stanford University, Stanford, CA 94305, USA
   Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Fano Marine Centre, viale Adriatico 1-N, 61032 Fano, Italy
   Marine Biogeochemical Modelling,GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
   Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong, China
C2 UNIV SOUTHAMPTON, UK
   UNIV ARCTIC UIT NORWAY, NORWAY
   MPO, CANADA
   UNIV BRITISH COLUMBIA, CANADA
   HAKAI INST, CANADA
   NIWA, NEW ZEALAND
   NIWA, NEW ZEALAND
   UNIV BIRMINGHAM, UK
   IIASA, AUSTRIA
   UNIV STANFORD, USA
   STAZ ZOOL ANTON DOHRN, ITALY
   IFM GEOMAR, GERMANY
   UNIV HONG KONG, CHINA
TC 0
UR https://archimer.ifremer.fr/doc/00848/95996/103964.pdf
LA English
DT Article
DE ;Stable isotopes;δ13C and δ15N;POM;Bayesian spatial modelling;migration pathways;trophic baseline
AB Polar marine ecosystems are particularly vulnerable to the effects of climate change. Warming temperatures, freshening seawater and disruption to sea ice formation potentially all have detrimental cascading effects on food webs. New approaches are needed to better understand spatio-temporal interactions among biogeochemical processes at the base of Southern Ocean food webs, and how these interactions vary seasonally. In marine systems, isoscapes (models of the spatial variation in the stable isotopic composition) of carbon and nitrogen identify the spatial expression of varying biogeochemical processes on nutrient utilization by phytoplankton. Isoscapes also provide a baseline for interpreting stable isotope compositions of higher trophic level animals in movement, migration and diet research. Here we produce carbon and nitrogen isoscapes across the entire Southern Ocean (>40°S) using surface particulate organic matter (POM) isotope data, collected from multiple sources over the past 50 years and throughout the annual cycle. We use Integrated Nested Laplace Approximation (INLA)-based approaches to predict mean annual isoscapes and four seasonal isoscapes using a suite of environmental data as predictor variables. Clear spatial gradients in δ13C and δ15N values were predicted across the Southern Ocean, consistent with previous statistical and mechanistic isoscape views of isotopic variability in this region. We identify strong seasonal variability in both carbon and nitrogen isoscapes, with key implications for the use of static or annual average isoscape baselines in animal studies attempting to document seasonal migratory or foraging behaviours. 
PY 2020
PD DEC
SO ESS Open Archive
PU Wiley
DI 10.1002/essoar.10505064.1
ID 95996
ER

EF