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Jouta, J. (2019). The tell-tale isotopes: Towards indicators of the health of the Wadden Sea ecosystem.
Rijksuniversiteit Groningen.
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The tell-tale isotopes
Towards indicators of the health of the Wadden Sea ecosystem
The work in this thesis was conducted at the Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, Groningen, The Netherlands and Department of Marine Ecology, Royal Netherlands Institute for Sea Research NIOZ, Texel, The Netherlands. The research was funded by Waddenfonds project Waddensleutels (WF203930). The printing of this thesis was funded by the University
of Groningen and the Faculty of Mathematics and Natural Sciences. This thesis should be cited as:
Jouta, J. (2019) The tell-tale isotopes: towards indicators of the health of the Wadden Sea ecosystem. PhD Thesis, University of Goningen, Groningen, The Netherlands.
Lay-out & figures: Dick Visser Cover design: Drawings: Paranimfen: Printed by: Jeltje Jouta Jeltje Jouta
Wout Mooiman (samenvatting, ”Krabben”) Bregje Mooiman (contents, “Fûgeltsje yn aai”) Tim Valk and Sytze Jouta
Ridderprint B.V. ISBN: 978-94-034-1347-1 (Printed book) ISBN: 978-94-034-1346-4 (Electronic version) © 2019 J. Mooiman-Jouta (jjouta@hotmail.com)
The tell-tale isotopes
Towards indicators of the health of the Wadden Sea ecosystem
Proefschrift
ter verkrijging van de graad van doctor aan de
Rijksuniversiteit Groningen
op gezag van de
rector magnificus prof. dr. E. Sterken
en volgens besluit van het College voor Promoties.
De openbare verdediging zal plaatsvinden op
vrijdag 22 februari 2019 om 11:00 uur
door
Jeltje Jouta
geboren op 9 december 1985
te Wurdum (gem. Leeuwarden)
Copromotor
Dr. ir. H. van der Veer
Beoordelingscommissie
Prof. dr. B.D.H.K. Eriksson
Prof. dr. S. Bearhop
Prof. dr. K. Philippart
Oan Heit & Mem
Aan Maarten
Contents
CHAPTER1 General introduction 9
CHAPTER2 Food web assembly at the landscape scale: Using stable isotopes to reveal 25 changes in trophic structure during succession
Maarten Schrama, Jeltje Jouta, Matty P. Berg & Han Olff
Published in Ecosystems (2013) 16: 627–638
CHAPTER3 Benthic primary producers are key to sustain the Wadden Sea food web: 47 Stable carbon isotope analysis at landscape scale
Marjolijn J.A. Christianen, Jack J. Middelburg, Sander J. Holthuijsen, Jeltje Jouta, Tanya J. Compton, Tjisse van der Heide, Theunis Piersma, Jaap. S. Sinninghe Damsté, Henk W. van der Veer, Stefan Schouten & Han Olff
Published in Ecology (2017) 98(6): 1498–1512
CHAPTER4 Spatial heterogeneity in coastal stable nitrogen isotope baselines, does it matter? 75 Jeltje Jouta, Theunis Piersma, Han Olff, Marjolijn C. A. Christianen,
Sander J. Holthuijsen, Stefan Schouten & Laura L. Govers
Manuscript
CHAPTER5 Unexpected diet preferences of Eurasian spoonbills in the Dutch Wadden Sea: 107 Spoonbills mainly feed on small fish instead of shrimp
Jeltje Jouta, Petra de Goeij, Tamar Lok, Estefania Velilla, C.J. (Kees) Camphuysen, Mardik Leopold, Henk W. van der Veer, Han Olff, Otto Overdijk & Theunis Piersma
Published in Journal of Ornithology (2018) 159(3): 839–849
CHAPTER6 Ecological forensics: Using single point stable isotope values to infer seasonal 123 schedules of animals after two diet switches
Jeltje Jouta, Maurine W. Dietz, Jeroen Reneerkens, Theunis Piersma, Eldar Rakhimberdiev, Gunnar T. Hallgrímsson & Ido Pen
Published in Methods in Ecology and Evolution (2017) 8: 492–500
CHAPTER7 General discussion 147
References 165
Biography 184
Summary 187
Samenvatting 195
