Publications

Also see my publications on Google Scholar | Scopus | Orcid: 0000-0001-5839-2981 |

Deep learning code to classify seagrass from aerial imagery : https://git.wur.nl/deep-learning-tools-for-marine-ecosystem-monitoring/seagrass-segmentation

Deep learning code to automatically detect sea turtles from aerial imagery of subtidal seagrass: https://git.wur.nl/deep-learning-tools-for-marine-ecosystem-monitoring/seagrass-segmentation

Christianen MJA, Smulders FOH, Vonk JA, Becking LE, Bouma TJ, Engel SM, James RK, Nava MI, de Smit JC, van der Zee JP, Palsbøll PJ, & Bakker ES. (2023). Seagrass ecosystem multifunctionality under the rise of a flagship marine megaherbivore. Global Change Biology, 29(1), 215–230. https://doi.org/10.1111/gcb.16464. Twitter abstract. Press release in Dutch, Press release in English

Nauta J, Christianen MJA, Temmink RJM, Fivash GS, Marin-Diaz B, Reijers VC, Didderen K, Penning E, Borst ACW, Heusinkveld JHT, Zwarts M, Cruijsen PMJM, Hijner N, Lengkeek W, Lamers LPM, van der Heide T, Bouma TJ, van der Wal D, Olff ., & Govers LL (2023). Biodegradable artificial reefs enhance food web complexity and biodiversity in an intertidal soft-sediment ecosystem. Journal of Applied Ecology, 60(3), 541–552. https://doi.org/10.1111/1365-2664.14348

Fee O. H. Smulders, Naomi Slikboer, Marjolijn J. A. Christianen, Jan Arie Vonk. Battle for the mounds: niche competition between upside-down jellyfish and invasive seagrass. Ecology. https://doi.org/10.1002/ecy.3980 Click to download

F. O. H. Smulders, E. S. Bakker, O. R. O’Shea, J. E. Campbell, O. K. Rhoades, M. J. A. Christianen. Green turtles shape the seascape through grazing patch formation around habitat features: Experimental evidence. Ecology. https://doi.org/10.1002/ecy.3902 Click to download

Temmink RJM, Fivash GS, Govers LL, Nauta J, Marin-Diaz B, Cruijsen PMJM, Didderen K, Penning E, Olff H, Heusinkveld JHT, Lamers LPM, Lengkeek W, Christianen MJA, Reijers VC, Bouma TJ, & van der Heide T. (2022). Initiating and upscaling mussel reef establishment with life cycle informed restoration: Successes and future challenges. Ecological Engineering, 175, 106496. https://doi.org/10.1016/j.ecoleng.2021.106496

Cobacho SP, Grol NALM, Dros TA, Dekkers DTBM, & Christianen MJA. (2022). First evidence of polyembryony in black mangrove Avicennia germinans. Botanica Marina, 65(5), 321–324. https://doi.org/10.1515/bot-2022-0006

van der Zee JP, Christianen MJA, Bérubé M, Nava M, van der Wal S, Berkel J, Bervoets T, Meijer zu Schlochtern M, Becking LE, & Palsbøll PJ. (2022). Demographic changes in Pleistocene sea turtles were driven by past sea level fluctuations affecting feeding habitat availability. Molecular Ecology, 31(4), 1044–1056. https://doi.org/10.1111/mec.16302

Christianen MJA, van Katwijk MM, van Tussenbroek BI, Pagès JF, Ballorain K, Kelkar N, Arthur R. Alcoverro T (2021).A dynamic view of seagrass meadows in the wake of successful green turtle conservation. Nature Ecology & Evolution, 5(5), 553–555. https://doi.org/10.1038/s41559-021-01433-z .

Van der Heide T, Temmink RJM, Fivash GS, Bouma TJ, Didderen K, Esteban N, Gaeckle J, Gagnon K, Infantes E, Lengkeek W, Unsworth R & Christianen MJA. Coastal restoration success via emergent trait-mimicry is context dependent. Biological Conservation 2021;(109373). doi: 10.1016/j.biocon.2021.109373 

Smulders FOH, Becker ST, Campbell JE, Bakker ES, Boässon MJ, Bouwmeester MM, Vonk JA & Christianen MJA. Fish grazing enhanced by nutrient enrichment may limit invasive seagrass expansion. Aquatic Botany 2022;176. doi: 10.1016/j.aquabot.2021.103464. VIDEO

Marin-Diaz B, Fivash GS, Nauta J, Temmink RJM, Hijner N, Reijers VC, Cruijsen, PPMJM, Didderen K, Heusinkveld JHT, Penning E, Maldonado-Garcia G, van Belzen J, de Smit JC, Christianen MJA, van der Heide T, van der Wal D, Olff H, Govers LL. On the use of large-scale biodegradable artificial reefs for intertidal foreshore stabilization. Ecological Engineering. 2021;170:106354. doi: 10.1016/j.ecoleng.2021.106354

van der Zee JP, Christianen MJA, Bérubé M, Nava M, Schut K, Humber F, Alfaro-Núñez A, Becking LE & Palsbøll PJ. The population genomic structure of green turtles (Chelonia mydas) suggests a warm-water corridor for tropical marine fauna between the Atlantic and Indian oceans during the last interglacial. Heredity. 2021; doi:10.1038/s41437-021-00475-0

Smulders, FOH, O’Shea OR. & Christianen MJA, (2021) Animal-borne video reveals atypical behaviour in provisioned green turtles: A global perspective of a widespread tourist activity. Global Ecology and Conservation. 25, e01417. http://doi.org/10.1016/j.gecco.2020.e01417 – covered by New York Times – Trouw newspaper – NatureToday – Video abstract

Smulders FOH, Chiquillo KL, Willette DA, Barber PH, Christianen MJA (2020) Inconclusive evidence of sexual reproduction of invasive Halophila stipulacea: a new field guide to encourage investigation of flower and fruit production throughout its invasive range. Botanica Marina 63 (6), 537-540. https://doi.org/10.1515/bot-2020-0046 – new field guide of reproductive structures here – DCNA article – Nature today

Temmink*, Christianen*, Fivash* et al, Mimicry of emergent traits amplifies coastal restoration success, Nature Communications. DOI: 10.1038/s41467-020-17438-4 –VIDEO ABSTRACT  – post in Nature Ecol & Evol

James RK, Christianen MJA, van Katwijk MM, de Smit JC, Bakker ES, Herman PMJ, et al. Seagrass coastal protection services reduced by invasive species expansion and megaherbivore grazing. J Ecol. 2020; doi:10.1111/1365-2745.13411 – Coverage: DCNA article

Gagnon K, Rinde E, Bengil EGT, Carugati L, Christianen MJA, Danovaro R, et al. Facilitating foundation species: The potential for plant–bivalve interactions to improve habitat restoration success. Journal of Applied Ecology. 2020. doi:10.1111/1365-2664.13605

Johnson RA, Gulick AG, Constant N, Bolten AB, Smulders FOH, Christianen MJA, et al. Seagrass ecosystem metabolic carbon capture in response to green turtle grazing across Caribbean meadows. J Ecol. 2020; doi:10.1111/1365-2745.13306

Govers, L. L., Reijers, V., van der Heide, T., Nauta, J., Marin-Diaz, B., Gräfnings, M., Temmink, R., Lamers, L. P. M., Christianen, M. J. A., Lengkeek, W., & Others. (2020). Luwte speelt sleutelrol voor zeegras en mosselbanken. De Levende Natuur, 121(5), 168–171.

Zee JP Van Der, Christianen MJA, Nava M, Velez-zuazo X, Hao W, Bérubé M, et al. Population recovery changes population composition at a major southern Caribbean juvenile developmental habitat for the green turtle, Chelonia mydas. 2019; 1–11. doi:10.1038/s41598-019-50753-5

Christianen MJA, Smulders FOH, Engel MS, Nava MI, Willis S, Debrot AO, Palsbøll PJ, Vonk JA, Becking LE (2019) Megaherbivores may impact expansion of invasive seagrass in the Caribbean. Journal of Ecology. 2019;170:1:45-57. DOI: 10.1111/1365-2745.13021 | Graphical abstract. Blog, Media coverage:  Phys.org and (in Dutch:) here and here. Shortlisted research for the 2019 Harper Prize and top cited paper.

Christianen MJA, Lengkeek W, Bergsma JH , Coolen JWP, Didderen K, Dorenbosch M, Driessen FMF, Kamermans P, Reuchlin-Hugenholtz E, Sas H, Smaal A, van den Wijngaard KA, van der Have TM (2018) Return of the native facilitated by the invasive? Population composition, substrate preferences, and epibenthic species richness of a recently discovered shellfish reef with native European flat oysters (Ostrea edulis) in the North Sea. Marine Biology Research. DOI: 10.1080/17451000.2018.1498520. Media coverage H2O, Nederlands dagblad, Vis magazine. Radio interview on Dutch national radio NPO1, Focus program (22 aug 2018).

Esteban N, Laloë J-O, Kiggen FSPL, Ubels SM, Becking LE, Meesters EH, Berkel J, Hays GC, Christianen MJA (2018) Optimism for mitigation of climate warming impacts for sea turtles through nest shading and relocation. Scientific Reports, 8(1), 17625. doi:10.1038/s41598-018-35821-6 . Radio interview on Dutch national radio NPO1, Focus program (4 jan 2019). Coverage Trouw newspaper (Dutch, 29 may 2019, pdf).

Borst ACW, Verberk WCEP, Angelini C, Schotanus J, Wolters J-W, Christianen MJA, et al. (2018) Foundation species enhance food web complexity through non-trophic facilitation. PLoS ONE 13(8): e0199152. doi: 10.1371/journal.pone.0199152

Rees AF, Avens L, Ballorain K, Bevan E, Broderick AC, Carthy R, Christianen MJA, Duclos G, Heithaus M, Johnston M, Mangel J, Paladino F, Pendoley K, Reina R, Robinson N, Sykora-Bodie S, Tilley D, Varela MR, Whitman E, Whittock P, Wibbels T, Godley BJ (2018) The potential of unpiloted aerial systems for sea turtle research and conservation. endangered species research. DOI: 10.3354/esr00877  !Video-abstract!

Hays GC, Christianen MJA, Alcoverro T, Duarte CM, Hamann M, Macreadie PI, Marsh HD, Rasheed MA, Thums M, Unsworth RKF, York PH, Esteban N (2018) New tools to identify the location of seagrass meadows: marine grazers as habitat indicators. Frontiers in Marine Science. doi: 10.3389/fmars.2018.00009

Tarya A, Hoitink AJF, Van der Vegt M, van Katwijk MM, Hoeksema B, Bouma TJ, Lamers LPM, Christianen MJA (2018) Exposure of coastal ecosystems to river plume spreading across a near-equatorial continental shelf. doi: 10.1016/j.csr.2017.12.003 Continental Shelf Science. 153;1-15.

Vonk JA, Christianen MJA, Smulders FOH, Govers LL (2018) Seagrass leaf element content. A global overview. Marine Pollution Bulletin, 134 (August), 123–133. DOI 10.1016/j.marpolbul.2017.09.066

Smulders FOH, Vonk JA, Nava MI, Christianen MJA (2017) Expansion and fragment settlement of the invasive seagrass Halophila stipulacea in Lac Bay, Bonaire, Caribbean. Marine Biology Research.Marine Biology Research. DOI:10.1080/17451000.2017.1333620 

Christianen MJA, Middelburg J., Holthuijsen S., Jouta J, Compton TJ, van der Heide T, Piersma T, Sinninghe Damsté JS, van der Veer HW, Schouten S and Olff H. (2017) Benthic primary producers are key to sustain the Wadden Sea food web: stable carbon isotope analysis at landscape scale. Ecology. DOI: 10.1002/ecy.1837. Radio interview BNR “Waar de Wadden Zee van leeft”

Thompson J, Esteban N, Lalöe J, Christianen MJA, Hays G (2017) Implications of location accuracy and data volume for home range estimation and fine-scale movement analysis: comparing Argos and Fastloc-GPS tracking data Marine Biology. 164:204. DOI 10.1007/s00227-017-3225-7

O’Brien KR, Maxwell P, Kendrick GA, Waycott M, Christianen MJA, Udy JW, Ferguson AJP, Kilminster K, Scanes P, McKenzie LJ, McMahon K, Adams MP, Samper-Villarreal J, Lyons M, Lucieer V, Radke L, C. Dennison W (2017) Resistance, recovery and trajectory of seagrass ecosystems. Marine Pollution Bulletin. DOI: 10.1016/j.marpolbul.2017.09.006

Christianen MJA, van der Heide T, Holthuijsen SJ; van der Reijden KJ, Borst A, Olff H (2017) Biodiversity and food web indicators of community recovery in intertidal shellfish reefs. Biological Conservation. DOI: 10.1016/j.biocon.2016.09.028.

Christianen MJA*, Becking LE*, Nava MI, Miller N, Willis S, van Dam RP (2016) Post-breeding migration routes of marine turtles from Bonaire and Klein Bonaire, Caribbean Netherlands. Endangered Species Research 30:117-124 *joint 1st authors. DOI: 10.3354/esr00733

Bakker ES, Wood KA, Pagès JS, Veen GF, Christianen MJA, Santamaría L, Nolet BA Hilt S (2016) Herbivory on freshwater and marine macrophytes: a review and perspective. Aquatic Botany, 135:18–36. doi: 10.1016/j.aquabot.2016.04.008

De Fouw J, Govers LL, van de Koppel J, Christianen MJA, van der Reijden KJ, van der Geest M, Piersma T, Smolders AJP, Olff H, Lamers LPM, van Gils JA, van der Heide T (2016) Drought, mutualism breakdown, and landscape-scale degradation of seagrass beds. Current Biology: doi: 10.1016/j.cub.2016.02.023, coverage by ScienceNews

Van der Zee EM, Angelini C, Govers LL, Christianen MJA, Altieri AH, van der Reijden KJ, Silliman BR, van de Koppel J, van der Geest M, van Gils JA, van der Veer HW, Piersma T, de Ruiter PC, Olff H, van der Heide T (2016) How habitat-modifying organisms structure the food web of two coastal ecosystems. Proceedings of the Royal Society B 283: 20152326 DOI: 10.1098/rspb.2015.2326

Christianen MJA, Holthuijsen SJ, van der Zee EM, van der Eijk A, Govers LL, van der Heide T, de Paoli H, Olff H (2015) Ecotopenkaart en Natuurkansenkaart van de Nederlandse Waddenzee. Waddensleutels rapport 2015.04.01 – Also in a Glossy Magazine style

Christianen MJA, Olff H, Holthuijsen SJ, van der Zee EM, Govers LL. (2015) Wadden Natuur kaart (Wadden Nature Map): Online interactive map used for nature planning: http://waddennatuurkaart.nl & http://www.waddensleutels.nl

Vonk JA, Christianen MJA, Stapel J, O’Brien KR (2015) What lies beneath: why knowledge of below ground biomass dynamics is crucial to effective seagrass management. Ecological indicators 57: 259-267. DOI: 10.1016/j.ecolind.2015.05.008

Christianen MJA, Herman PMJ, Bouma TJ, Lamers LPM, van Katwijk MM, van der Heide T, Mumby PJ, Silliman BR, Engelhard SL, van de Kerk M, Kiswara W, van de Koppel J (2014) Habitat collapse due to overgrazing threatens turtle conservation in marine protected areas, Proceedings of the Royal Society B, 281: 1777. DOI:10.1098/rspb.2013.2890. PDF, supplements. -> Press coverage Washington Post, Frontiers in Ecology & Environment, Time and others. Movie green turtle digging

Heithaus MR, Alcoverro T, Arthur R, Burkholder DA, Coates KA, Christianen MJA, Kelkar N, Manuel SA, Wirsing AJ, Kenworthy WJ and Fourqurean JW (2014) Seagrasses in the age of sea turtle conservation and shark overfishing. Front. Mar. Sci. 1:28. DOI: 10.3389/fmars.2014.00028

Becking LE, van Bussel T, Debrot AO, Christianen MJA (2014) First record of a Caribbean green turtle (Chelonia mydas) grazing on invasive seagrass (Halophila stipulacea), Caribbean Journal of Science, 48(2-3):162-163. DOI: 10.18475/cjos.v48i3.a05

Christianen MJA, van Belzen J, Herman PMJ, van Katwijk MM, Lamers LPM, van Leent PJM, Bouma TJ (2013) Low-canopy seagrass beds still provide important coastal protection services, PLOS ONE, 8(5): e62413. DOI: 10.1371/journal.pone.0062413

Christianen MJA (2013)  Seagrass systems under nutrient loads, hydrodynamics & green turtle grazing – Do green turtles rule the seagrass world? PhD thesis, Radboud University Nijmegen, 138p. With summaries in English, Dutch & Bahasa Indonesia.

Kneer D, Monniot F, Stach T. Christianen MJA (2013) Ascidia subterranea sp. nov. (Phlebobranchia: Ascidiidae), a new tunicate belonging to the A. sydneiensis Stimpson, 1855 group, found as burrow associate of Axiopsis serratifrons A. Milne-Edwards, 1873 (Decapoda: Axiidae) on Derawan Island, Indonesia. Zootaxa 3615: 5, 485-494. DOI: 10.11646/zootaxa.3616.5.5

Christianen MJA, Govers LL, Kiswara W, Roelofs JGM, Bouma TJ, Lamers LPM& van Katwijk MM (2012) Marine megaherbivore grazing may increase seagrass tolerance to high nutrient loads (PDF). Journal of Ecology, 100: 546-560, DOI: 10.1111/j.1365-2745.2011.01900.x

Christianen MJA, van der Heide T, Bouma TJ, Roelofs JGM, van Katwijk MM, & Lamers LPM (2011) Limited toxicity of NHx pulses on an early and late successional tropical seagrass species: Interactions with pH and light level (PDF). Aquatic Toxicology. 104, 73-79, doi:10.1016/j.aquatox.2011.04.002

van Katwijk MM, van der Welle MEW, Lucassen ECHET, Vonk JA, Christianen MJA, Kiswara W, Inayat al Hakim I, Arifin A, Bouma TJ, Roelofs JGM, Lamers LPM (2011). Multi-level early warning indicators for river nutrient and sediment loads in tropical seagrass beds. A study in the Berau estuary, East-Kalimantan, Indonesia (PDF). Marine Pollution Bulletin, DOI: 10.1016/j.marpolbul.2011.04.007 

Vonk JA, Christianen MJA, Stapel J (2010) Abundance, edge effect, and seasonality of fauna in mixed-species seagrass meadows in southwest Sulawesi, Indonesia (PDF). Marine Biology Research, 6, 3:  282 – 291. DOI: 10.1080/17451000903233789

Vonk JA, Christianen MJA, Stapel J (2008) Redefining the trophic importance of seagrasses for fauna in tropical meadows (PDF). Estuarine, Coastal and Shelf Science, 79, 4: 653-660. DOI: 10.1016/j.ecss.2008.06.002

Dorenbosch M, Grol MGG, Christianen MJA, Nagelkerken I & van der Velde G (2005) Do Indo-Pacific seagrass beds and mangroves contribute to fish density and diversity on adjacent coral reefs? (PDF) Marine Ecology Progress Series 302: 63-76. DOI: 10.3354/meps302063

Also see my publications on ResearchGate, my Researchers ID  & Google Scholar
citation style above (APA 7th, without “. “)

Media

also see links above for media coverage of papers,  my WUR-page for press releases of papers, and my research@WUR page for all activities

output prior to my move to WUR in 2018 below:

De groene zeeschildpad krijgt het te warm. Monica Wesseling in Trouw newspaper. 29 may 2019. pdf

NPO radio 1 (Dutch) comment on NOS news item about the discovery of 300 floating Olive Ridley turtles in Mexico. 29 aug 2018

NRC Explanatory video (Dutch ) “Waarom de groene zeeschildpad uit Australië dreigt te verdwijnen” 15 may 2018 by Sterre Meijer. Email me for a version with english subtitles

CSI in de Ecologie (Met isotopen onderzoek de kwaliteit van ecosystemen bepalen). Vakblad Natuur Bos en Landschap, oct. 2016

Kunnen zeeschildpadden zonder schild, Willem Wever

Nomads of the Caribbean – Wageningen World (Wageningen university) – no.3 2016. PDF

Ecology and conservation of sea turtles in the Dutch Caribbean – BioNews – DCNA newsletter #20 dec. 2015

Woestijn onder water, by Hans Wolkers in Quest may 2013 (Dutch popular scientific magazine,”Underwater desert”)

Schermafbeelding 2013-05-26 om 17.09.58

TV: National Geographic Channel: Documentary “Marine life”

PhD

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With Google+ plugin by Geoff Janes