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Publikationer

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Koffijberg, K., van Winden, E. & Clausen, P. (2013). The Netherlands as a winter refuge for Light-bellied Brent Geese Branta bernicla hrota. Wildfowl, Special Issue(3), 40-56.
Koffijberg, K., Laursen, K., Hälterlein, B., Reichert, G. & Frikke, J. (2013). Trends of Breeding Birds in the Wadden Sea 1991-2009. Common Wadden Sea Secretariat. Wadden Sea Ecosystem Nr. 32
Koffijberg, K., Laursen, K., Hälterlein, B., Reichert, G. & Frikke, J. (2014). Trends of Breeding Birds in the Wadden Sea 1991-2011. Wilhelmshaven: Common Wadden Sea Secretariat (CWSS). Wadden Sea Ecosystem Bind 35
Koffijberg, K., Laursen, K., Hälterlein, B., Reichert, G., Frikke, J. & Soldat, L. (2015). Trends of Breeding Birds in the Wadden Sea 1991-2013. I Wadden Sea Ecosystem (Bind 35, s. 1-50).
Koffijberg, K., Frikke, J., Hälterlein, B., Laursen, K., Reichert, G. & Soldaat, L. (2017). Wadden Sea Quality Status Report: Breeding Birds. I Wadden Sea Quality Status Report (s. 1-19). Wilhelmshaven, Germany: Common Wadden Sea Secretariat, TMAP. http://qsr.waddensea-worldheritage.org/node/48/pdf
Koffijberg, K., van Winden, E., Clausen, P., Nielsen, R. D., Devos, K., Haas, F., Nilsson, L., Isaksen, K., Heldbjerg, H., Madsen, J., Lehtinimie, T., Toivanen, T., Tombre, I. & Wahl, J. (2020). Barnacle Goose Russia/Germany & Netherlands population status report 1980-2018. AEWA European Goose Management Platform Data Centre. https://egmp.aewa.info/sites/default/files/meeting_files/documents/AEWA_EGM_IWG_5_17_BG_Status_Report.pdf
Koffijberg, K., Bregnballe, T., Frikke, J., Gnep, B., Hälterlein, B., Hansen, M. B., Körber, P., Reichert, G., Umland, J. & van der Meij , T. (2020). Breeding birds in the Wadden Sea: Trends 1991-2017 and results of total counts in 2006 and 2012. Common Wadden Sea Secretariat (CWSS), Wilhelmhaven, Germany. Wadden Sea Ecosystem Nr. 40 https://www.waddensea-worldheritage.org/resources/ecosystem-40-trends-breeding-birds
Koffijberg, K., Bregnballe, T., Frikke, J., Hälterlein, B., Hansen, M. B., Meyer, J., Reichert, G., Umland, J. & van der Meij, T. (2022). Wadden Sea Quality Status Report: Breeding Birds. I S. Kloepper & K. Meise (red.), Wadden Sea Quality Status Reports Common Wadden Sea Secretariat (CWSS), Wilhelmhaven, Germany.
Koffijberg, K., Prior, N., Clausen, P., Brides, K., Kowallik, C., Hornman, M., Devos, K., Meisner, W., Tijsen, W., Burke, B., Luigujõe, L., Stīpniece, A., Sniauksta, L., Nilsson, L., Strebel, N., Moussy, C., Calbrade, N., Shimmings, P., Langendoen, T. ... Rees, E. C. (2025). Decline of the Bewick's Swan Cygnus columbianus bewickii population wintering in Northeast/Northwest Europe. Wildfowl, 75, 63-93.
Koffijberg, K., Baumung, S., Bregnballe, T., Enners, L., Frikke, J., Gnep, B., Hansen, M. B., Müller, G. & Packmor, F. (2026). Trends of Breeding Birds in the Wadden Sea 1991-2023 and results of the total count in 2018. Zenodo. https://doi.org/10.5281/zenodo.18326676
Knief, U., Bregnballe, T., Alfarwi, I., Ballmann, M. Z., Brenninkmeijer, A., Bzoma, S., Chabrolle, A., Dimmlich, J., Engel, E., Fijn, R., Fischer, K., Hälterlein, B., Haupt, M., Hennig, V., Herrmann, C., In 'T Veld, R., Kirchhoff, E., Kristersson, M., Kühn, S. ... Courtens, W. (2024). Highly pathogenic avian influenza causes mass mortality in Sandwich Tern Thalasseus sandvicensis breeding colonies across north-western Europe. Bird Conservation International, 34, 1-11. Artikel e6. https://doi.org/10.1017/S0959270923000400
Kloepper, S., Bostelmann, A., Bregnballe, T., Busch, J. A., Buschbaum , C., Deen, K., Domnick , A., Gutow, L., Jensen, K., Jepsen, N., Luna, S., Meise, K., Teilmann, J. & van Wezel, A. (2022). Wadden Sea Quality Status Reports 2022. Common Wadden Sea Secretariat (CWSS), Wilhelmhaven, Germany.
Kleefstra, R., Hormann, M., Bregnballe, T., Frikke, J., Günther, K., Hälterlein, B., Körber, P. & Scheiffarth, G. (2019). Trends of Migratory and Wintering Waterbirds in the Wadden Sea 1987/1988 - 2016/2017. Common Wadden Sea Secretariat. Wadden Sea Ecosystem Nr. 39 https://www.sovon.nl/sites/default/files/doc/2019_ecosystem39_trends_of_waterbirds.pdf
Kleefstra, R., Bregnballe, T., Frikke, J., Günther, K., Hälterlein, B., Hansen, M. B., Hornman, M., Ludwig, J., Meyer, J. & Scheiffarth, G. (2022). Trends of Migratory and Wintering Waterbirds in the Wadden Sea 1987/1988 - 2019/2020. Common Wadden Sea Secretariat (CWSS), Wilhelmhaven, Germany. Wadden Sea Ecosystem Nr. 41 https://www.waddensea-worldheritage.org/
Kleefstra, R., Bregnballe, T., Frikke, J., Gnep, B., Günther, K., Hälterlein, B., Hansen, M. B., Hornman, M., Koffijberg, K., Meyer, J., Reichert, G., Scheiffarth, G. & Umland, J. (2022). Trends of waterbird populations in the Wadden Sea in comparison with flyway trends. I M. van Roomen, G. Citegetse, O. Crowe, T. Dodman, W. Hagemeijer, K. Meise & H. Schekkerman (red.), East Atlantic Flyway assessment 2020: The status of coastal waterbird populations and their sites (s. 55-61). Wadden Sea Flyway Initiative p/a CWSS. https://www.waddensea-worldheritage.org/sites/default/files/2022_East%20Atlantic%20Flyway%20assessment%202020.pdf
Kleefstra, R., Bregnballe, T., Frikke, J., Günther, K., Hälterlein, B., Hansen, M. B., Hornman, M., Meyer, J. & Scheiffarth, G. (2022). Wadden Sea Quality Status Report: Migratory birds . I S. Kloepper (red.), Wadden Sea Quality Status Report Common Wadden Sea Secretariat (CWSS), Wilhelmhaven, Germany.
Kleefstra, R., Behm, K., Bregnballe, T., Enners, L., Frikke, J., Günther, K., Hälterlein, B., Hansen, M. B., Hornman, M., Packmor, F., Meyer, J. & Scheiffarth, G. (2025). Trends of Migratory and Wintering Waterbirds in the Wadden Sea 1987/1988 - 2022/2023. Wilhelmshaven: Common Wadden Sea Secretariat (CWSS). https://doi.org/10.5281/zenodo.17199022
Kleefstra, R., Bregnballe, T., Frikke, J., Behm, K., Günther, K., Hälterlein, B., Hansen, M. B., Hornman, M., Meyer, J. & Scheiffarth, G. (2025). Change in migrating and wintering waterbirds in the Wadden Sea. I M. van Roomen, J. Reneerkens, G. Citegetse, O. Crowe, K. Gueye, T. Langendoen, T. Dodman, K. Meise & H. Schekkerman (red.), East Atlantic Flyway Assessment 2023: The status of coastal waterbird populations and their sites (s. 55-65) https://doi.org/10.5281/zenodo.15355685
Kjeldsen, J. P. & Nielsen, H. H. (2011). Ynglefugle i Vejlerne 2011. Aarhus University, DCE - Danish Centre for Environment and Energy. Teknisk rapport fra DCE - Nationalt Center for Miljø og Energi Nr. 6 http://www2.dmu.dk/Pub/TR6.pdf
Kjær, L., Madsen, A. B. & Elmeros, M., (2013). Krondyr og barriereeffekter fra veje: Best practice på statens veje i Danmark, 15 s., jan. 18, 2013. Notat fra DCE - Nationalt Center for Miljø og Energi (2011-2019)
Kjær, C., Nygaard, B., Therkildsen, O. R., Elmeros, M., Bladt, J. & Mikkelsen, P. (2021). Arter 2019: NOVANA. Aarhus University, DCE - Danish Centre for Environment and Energy. Videnskabelig rapport fra DCE - Nationalt Center for Miljø og Energi Nr. 421 https://dce2.au.dk/pub/SR421.pdf
Kjær, C., Therkildsen, O. R., Brunbjerg, A. K., Bladt, J. & Mikkelsen, P. (2021). Arter 2020: NOVANA. Aarhus University, DCE - Danish Centre for Environment and Energy. Videnskabelig rapport fra DCE - Nationalt Center for Miljø og Energi Nr. 476 https://dce2.au.dk/pub/SR476.pdf
Kjær, C., Elmeros, M., Heldbjerg, H., Brunbjerg, A. K., Mortensen, R. M., Bladt, J. & Mikkelsen, P. (2023). Arter 2021: NOVANA . Aarhus University, DCE - Danish Centre for Environment and Energy. Videnskabelig rapport fra DCE - Nationalt Center for Miljø og Energi Nr. 530 https://dce2.au.dk/pub/SR530.pdf
Kjær, C., Adrados, L. C., Boel, M., Briggs, L., Christensen, P. K., Damm, N., Frisenvænge, J., Fog, K., Hansen, R. R., Hesselsøe, M., Mortensen, R. M., Ravn, P., Stoisek, S., Strandberg, M. T., Therkildsen, O. R. & Wiberg-Larsen, P. (2023). Opdatering af: Håndbog om dyrearter på habitatdirektivets Bilag IV. Aarhus University, DCE - Danish Centre for Environment and Energy. Videnskabelig rapport fra DCE - Nationalt Center for Miljø og Energi https://dce.au.dk/fileadmin/dce.au.dk/Udgivelser/Videnskabelige_rapporter_500-599/SR520.pdf
Kjær, C., Strandberg, M. T., Elmeros, M., Hansen, R. R., Brunbjerg, A. K., Bladt, J. & Mikkelsen, P. (2024). Arter 2022: NOVANA. Aarhus University, DCE - Danish Centre for Environment and Energy. Videnskabelig rapport fra DCE - Nationalt Center for Miljø og Energi Bind 2024 Nr. 593 https://dce.au.dk/fileadmin/dce.au.dk/Udgivelser/Videnskabelige_rapporter_500-599/SR593.pdf
Kjær, L. J., Kirkeby, C. T., Boklund, A. E., Hjulsager, C. K., Fox, A. D. & Ward, M. P. (2025). Prediction models show differences in highly pathogenic avian influenza outbreaks in Japan and South Korea compared to Europe. Scientific Reports, 15(1), Artikel 6783. https://doi.org/10.1038/s41598-025-91384-3
Kjær, C., Brunbjerg, A. K., Hansen, R. R., Boel, M., Mortensen, R. M., Møller, J. D. & Mikkelsen, P. (2025). Arter 2023-2024: NOVANA. Aarhus University, DCE - Danish Centre for Environment and Energy. Videnskabelig rapport fra DCE - Nationalt Center for Miljø og Energi Nr. 686 https://dce.au.dk/fileadmin/dce.au.dk/Udgivelser/Videnskabelige_rapporter_600-699/SR686.pdf
Kilpi, M., Lorentsen, S.-H., Petersen, I. K. & Einarsson, Á. (2015). Trends and drivers of change in diving ducks. TemaNord Bind 2015 Nr. 516
Keck, S. M., Barnhill, A., Smeele, S. Q., Hsu, M., Dolson-Fazio, A., Bergler, C., Ball, G. F., Krieg, C. A. & Odom, K. J. (2025). Deep machine learning allows classification of male and female songbird songs in a species with highly variable repertoires. Behaviour, 162(10-11), 709-743. https://doi.org/10.1163/1568539X-bja10324
Katborg, C., Møller, J. D. & Elmeros, M. (2024). Flagermus – mellem regler og beskyttelse. Vand & Jord, 31(1), 27-29.
Kanstrup, N., (2017). Filling the gabs in evidence: Danish experiences with non-lead shot for hunting in wetlands, Nr. EC Number 231-100-4 CAS Number 7439-92-1, apr. 12, 2017.
Kanstrup, N. (2016). Danske Jagtvæsner anno 2016. Dansk Jagtakademi.
Kanstrup, N. (2017). Lead poisoning from lead ammunition: Danish research and regulations . Poster-session præsenteret på Sea-Eagle 2017 Conference. Roosta. Estonia..