FN Archimer Export Format
PT J
TI Nutrient limitation, bioenergetics and stoichiometry: A new model to predict elemental fluxes mediated by fishes
BT 
AF Schiettekatte, Nina M. D.
   Barneche, Diego R.
   Villéger, Sébastien
   Allgeier, Jacob E.
   Burkepile, Deron E.
   Brandl, Simon J.
   Casey, Jordan M.
   Mercière, Alexandre
   Munsterman, Katrina S.
   Morat, Fabien
   Parravicini, Valeriano
   El‐Sabaawi, Rana
AS 1:1;2:2,3,4;3:5;4:6;5:7,8;6:9;7:1;8:1;9:6;10:1;11:1;12:;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 PSL Université Paris: EPHE‐UPVD‐CNRS USR 3278 CRIOBE Université de Perpignan Perpignan ,France
   Australian Institute of Marine Science Crawley WA ,Australia
   Oceans InstituteThe University of Western Australia Crawley WA, Australia
   College of Life and Environmental Sciences University of Exeter Penryn ,UK
   MARBEC Université de MontpellierCNRSIFREMERIRD Montpellier, France
   Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI ,USA
   Department of Ecology, Evolution, and Marine Biology University of California Santa Barbara CA, USA
   Marine Science Institute University of California Santa Barbara CA ,USA
   Department of Biological Sciences Simon Fraser University Burnaby BC, Canada
C2 UNIV PERPIGNAN, FRANCE
   AUSTRALIAN INST MARINE SCI, AUSTRALIA
   UNIV WESTERN AUSTRALIA, AUSTRALIA
   UNIV EXETER, UK
   UNIV MONTPELLIER, FRANCE
   UNIV MICHIGAN, USA
   UNIV CALIF SANTA BARBARA, USA
   UNIV CALIF SANTA BARBARA, USA
   UNIV SIMON FRASER, CANADA
UM MARBEC
IN WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 5.608
TC 25
UR https://archimer.ifremer.fr/doc/00642/75389/93517.pdf
LA English
DT Article
DE ;bioenergetics;fish;ingestion;nitrogen;nutrient cycling;nutrient limitation;phosphorus;stoichiometry
AB Energy flow and nutrient cycling dictate the functional role of organisms in ecosystems. Fishes are key vectors of carbon (C), nitrogen (N) and phosphorus (P) in aquatic systems, and the quantification of elemental fluxes is often achieved by coupling bioenergetics and stoichiometry. While nutrient limitation has been accounted for in several stoichiometric models, there is no current implementation that permits its incorporation into a bioenergetics approach to predict ingestion rates. This may lead to biased estimates of elemental fluxes. Here, we introduce a theoretical framework that combines stoichiometry and bioenergetics with explicit consideration of elemental limitations. We examine varying elemental limitations across different trophic groups and life stages through a case study of three trophically distinct reef fishes. Further, we empirically validate our model using an independent database of measured excretion rates. Our model adequately predicts elemental fluxes in the examined species and reveals species‐ and size‐specific limitations of C, N and P. In line with theoretical predictions, we demonstrate that the herbivore Zebrasoma scopas is limited by N and P, and all three fish species are limited by P in early life stages. Further, we show that failing to account for nutrient limitation can result in a greater than twofold underestimation of ingestion rates, which leads to severely biased excretion rates. Our model improved predictions of ingestion, excretion and egestion rates across all life stages, especially for fishes with diets low in N and/or P. Due to its broad applicability, its reliance on many parameters that are well‐defined and widely accessible, and its straightforward implementation via the accompanying r ‐package fishflux , our model provides a user‐friendly path towards a better understanding of ecosystem‐wide nutrient cycling in the aquatic biome. 
PY 2020
PD SEP
SO Functional Ecology
SN 0269-8463
PU Wiley
VL 34
IS 9
UT 000550711600001
BP 1857
EP 1869
DI 10.1111/1365-2435.13618
ID 75389
ER

EF