Heße, E., Boyi, J. O., Das, K., Jung, K., Lehnert, K., Piette, M., Pinzone, M., Schückel, S., Schückel, U., Siebert, U., & Gilles, A. (2025). A multi-method approach reveals long- and short-term dietary differences in individual harbour porpoises Phocoena phocoena in the southern North Sea. Marine Ecology Progress Series: MEPS, 755, 115–132. https://doi.org/10.3354/meps14787
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Maurer, N., Boyi, J. O., Schick, L. A., Nachtsheim, D. A., Schaffeld, T., Gross, S., Teilmann, J., Schnitzler, J., & Siebert, U. (2025). Unsealing behaviour: variation in harbour seal (Phoca vitulina) responses to anthropogenic sound in relation to individual health. Marine Pollution Bulletin, 214, Article 117777. https://doi.org/10.1016/j.marpolbul.2025.117777
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Boyi, J. O. (2024). Molecular toolbox to investigate aquatic wildlife ecology. https://nbn-resolving.org/urn:nbn:de:gbv:95-120494
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Maurer, N., Boyi, J. O., Schick, L. A., Nachtsheim, D. A., Schaffeld, T., Siebert, U., & Schnitzler, J. G. (2024). Relationship between health status and animal behavioural changes in tagged harbour seals. 8th International Bio-Logging Science Symposium, Tokyo, March 2024. https://elib.tiho-hannover.de/receive/tiho_mods_00012729
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Boyi, J. O., Sonne, C., Dietz, R., Rigét, F., Siebert, U., & Lehnert, K. (2023). Gene expression and trace elements in greenlandic ringed seals (Pusa hispida). Environmental Research, 244, Article 117839. https://doi.org/10.1016/j.envres.2023.117839
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Hesse, E., Boyi, J. O., Das, K., Lehnert, K., Piette, M., Pinzone, M., Siebert, U., & Gilles, A. (2023). Hidden gems? A multi-method approach to study the diet of harbour porpoises (Phocoena phocoena) in the southern North Sea. In S. Methion, N. Dunel Roig, J. G. A. Neves, O. Mosca, & B. Díaz López (Eds.), 34th European Cetacean Society Conference: Abstract book. https://www.thebdri.com/ecs2023abstractbook.pdf
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Lehnert, K., Boyi, J. O., & Siebert, U. (2023). Potential new species of pseudaliid lung nematode (Metastrongyloidea) from two stranded neonatal orcas (Orcinus orca) characterized by ITS-2 and COI sequences. Ecology and Evolution, 13(5), Article e10036. https://doi.org/10.1002/ece3.10036
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Lehnert, K., Herzog, I., Boyi, J. O., Gross, S., Wohlsein, P., Ewers, C., Prenger-Berninghoff, E., & Siebert, U. (2023). Heartworms in Halichoerus grypus: first records of Acanthocheilonema spirocauda (Onchocercidae; Filarioidea) in 2 grey seals from the North Sea. Parasitology, 150(9), 781–785. https://doi.org/10.1017/S0031182023000501
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Rohner, S., Boyi, J. O., Artemeva, V., Zinke, O., Kiendl, A., Siebert, U., & Lehnert, K. (2023). Back from exile?: First records of chewing lice (Lutridia exilis; Ischnocera; Mallophaga) in growing Eurasian otter (Lutra lutra) populations from Northern Germany. Pathogens, 12(4), Article 587. https://doi.org/10.3390/pathogens12040587
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Boyi, J. O., Heße, E., Rohner, S., Säurich, J., Siebert, U., Gilles, A., & Lehnert, K. (2022). Deciphering Eurasian otter ( Lutra lutra L.) and seal ( Phoca vitulina L.; Halichoerus grypus F.) diet: metabarcoding tailored for fresh and saltwater fish species. Molecular ecology, 31(19), 5089–5106. https://doi.org/10.1111/mec.16635
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