Niels Jacobsen

Niels Jacobsen

Professor, emeritus

ORCID: 0000-0003-3932-1293

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  1. Published

    Über die kultur von Barclaya-Arten (Nymphaeaceae)

    Jacobsen, Niels, Ipor, I. B. & Bogner, J. (Translator), 2007, In: Aqua Planta. 32, p. 86-93 8 p.

    Research output: Contribution to journal › Journal article › Communication

  2. Published

    Über die Bestäubung von Ophrys speculum Link auf Mallorca

    Jacobsen, Niels & Rasmussen, Finn N., 1976, In: Orchidee. 27, p. 64-66 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Whipple's operation for carcinoma of the pancreatic head and the ampullary region. Short-and long-term results

    Sørensen, M. B., Banner, Jytte, Rokkjaer, M. & Jacobsen, Niels, Jul 1998, In: Scandinavian Journal of Gastroenterology. 33, 7, p. 759-64 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Weitere Aufsammlungen von Cryptocoryne usteriána Engler auf den Philippinen

    Jacobsen, Niels, Bogner, J. & Christensen, C., 1998, In: Aqua Planta. 23, 3, p. 113-115 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Water-Trumpet (Cryptocoryne): Conservation Action Plan 2023-2033

    Lansdown, R. V., Jacobsen, Niels, Kasselmann, C., Naive, M. A. K., Velautham, E., Watve, A., Wongso, S. & Yakandawala, D., 2023, IUCN SSC Freshwater Plant Specialist Group. 161 p.

    Research output: Book/Report › Report › Research

  6. Published

    Wasserpflanzen in einem Fluss mit Gezeitenzone am Sungai Sedili Kechil, Johor, Malaysia

    Jacobsen, Niels, Ganapathy, H. B., Mangsor, K. N. A., Othman, A. S., Rahman, S. N. A., Rosazlina, R. & Siow, J., 2020, In: Aqua Planta. 45, 4, p. 129-139 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Vegetationen i kridtbruddet "Dania" ved Mariager Fjord

    Jacobsen, Niels, Larsen, H. & Rasmussen, Finn N., 1976, In: Botanisk Tidsskrift. 70, p. 184-187 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Utilizing next generation sequencing to characterize microsatellite loci in a tropical aquatic plant species Cryptocoryne cordata var. cordata (Araceae)

    Rosazlina, R., Jacobsen, Niels, Ørgaard, Marian & Othman, A. S., 2015, In: Biochemical Systematics and Ecology. 61, p. 385-389 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Unifying plant molecular data and plants

    Jacobsen, Niels & Ørgaard, Marian, 1996, Unifying plant genomes. Heslop-Harrison, J. S. (ed.). Cambridge: Society for Experimental Biology, p. 61-64 4 p. (Symposia of The Society for Experimental Biology).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  10. Published

    Udvidet systematisk botanik bind 5: MONOCOTYLEDONEAE, Enkimbladede @2013 KVL

    Jensen, J. & Jacobsen, Niels, 2003, 148 p.

    Research output: Book/Report › Book › Education

  11. Published

    Udvidet systematisk botanik bind 4: DICOTYLEDONEAE, Tokimbladede: CORNIFLORAE@2013LAMIIFLORAE @2013 KVL

    Jensen, J. & Jacobsen, Niels, 2003, 117 p.

    Research output: Book/Report › Book › Education

  12. Published

    Udvidet systematisk botanik bind 3: DICOTYLEDONEAE, Tokimbladede: ARALIIFLORAE@2013SOLANIFLORAE @2013 KVL

    Jensen, J. & Jacobsen, Niels, 2003, 90 p.

    Research output: Book/Report › Book › Education

  13. Published

    Udvidet systematisk botanik bind 2: DICOTYLEDONEAE, Tokimbladede: THEIFLORAE@2013SANTALIFLORAE @2013 KVL

    Jensen, J. & Jacobsen, Niels, 2003, 132 p.

    Research output: Book/Report › Book › Education

  14. Published

    Udvidet systematisk botanik bind 1: MAGNOLIFLORAE@2013VIOLIFLORAE

    Jensen, J. & Jacobsen, Niels, 2003, 128 p.

    Research output: Book/Report › Book › Education

  15. Published

    The use of AFLP markers to elucidate relationships within Cryptocoryne (Araceae)

    Jacobsen, Niels, Bastmeijer, J., Christensen, C., Idei, T., Lange, Conny Bruun Asmussen, Orabi, J., Sookchaloem, D., Toneatto, F. & Ørgaard, Marian, 2015, In: Aroideana. 38E, 1, p. 186-193 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    The plants in the Florilegia

    Arnklit, F., Frederiksen, S., Hansen, Hans Vilhelm, Jacobsen, Niels, Jørgensen, L. B., Møller, J. D., Rasmussen, Finn N. & Tybjerg, H., 2013, Flowers and worlds view. Bjerkhof, S. (ed.). Statens Museum for Kunst, p. 197-209 13 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  17. Published

    The opening twist (ptyxis) of the spathes of Lagenandra and Cryptocoryne (Araceae)

    Jacobsen, Niels, Bastmeijer, J. & Ørgaard, Marian, 2018, In: Aroideana. 41, 2-3, p. 201-217

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    The legacy of terrestrial plant evolution on cell wall fine structure

    Fangel, J. U., Sørensen, Klavs Martin, Jacobsen, Niels, Mravec, Jozef, Isager Ahl, Louise, Bakshani, C., Mikkelsen, M. D., Engelsen, Søren Balling, Willats, W. & Ulvskov, Peter, 2024, In: Plant Cell and Environment. 47, 4, p. 1238-1254 17 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    The identity of Cryptocoryne crispatula var. tonkinensis (Araceae)

    Jacobsen, Niels, Bastmeijer, J. D., Bogner, J., Du, N. V., Hong, Q. B. & Ørgaard, Marian, 2015, In: Willdenowia. 45, 2, p. 177-182 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    The habitats of Cryptocoryne (Araceae) in the Chao Phraya River system: The Nan River and the Yom River in northern Thailand

    Idei, T., Jacobsen, Niels & Maneeanakekul, S., 2022, In: Aroideana. 45, 1, p. 267-280 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    The genomic organization and evolutionary distribution of a tandemly repeated DNA sequence family in the genus Crocus (Iridaceae)

    Frello, S., Ørgaard, Marian, Jacobsen, Niels & Heslop-Harrison, J. S., 2004, In: Yichuan. 141, 1, p. 81-88 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    The Cryptocoryne (Araceae) of Thailand

    Jacobsen, Niels, Idei, T. & Sookchaloem, D., 2008, Abstracts: Lecture. p. 32 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  23. Published

    Tha Pom Klong Song Nam - a wonderful locality for Cryptocoryne ciliata in south Thailand

    Jacobsen, Niels, 2006, In: Aquatic Gardener. 19, p. 30-38 9 p.

    Research output: Contribution to journal › Journal article › Communication

  24. Published

    Tha Pom Klong Song Nam: aussergewöhlicher Fundort von Cryptocoryne ciliata (Roxb.) Schott in Südthailand

    Jacobsen, Niels, 2005, In: Aqua Planta. 2, p. 58-64 7 p.

    Research output: Contribution to journal › Journal article › Communication

  25. Published

    Taxonomy in Hordeum murinum complex (Poaceae)

    Jacobsen, Niels & Bothmer, R. V., 1996, In: Nordic Journal of Botany. 15, 5, p. 449-458 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Systematisk botanik: almen havebrugsbotanik, stængelplanter

    Jacobsen, Niels & Jensen, J., 1999, 3. ed. København: Jordbrugsforlaget. 298 p.

    Research output: Book/Report › Book › Education

  27. Published

    Stort potentiale til sikring af fremtidens fødevarer

    Jacobsen, Niels, Jacobsen, S. & Sørensen, Marten, 2011, In: Jord og Viden. 5, p. 14-15 2 p.

    Research output: Contribution to journal › Journal article › Research

  28. Published

    Stories from the Mekong, part 3. Cryptocoryne (Araceae) habitats in the Kok River, Chiang Rai Province, Northern Thailand

    Idei, T., Maneeanakekul, S. & Jacobsen, Niels, 2022, In: Aroideana. 45, 1, p. 281-295 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Stories from the Mekong, part 2. The Cryptocoryne (Araceae) of Chiang Khan District, Loei Province, Thailand

    Idei, T., Bastmeijer, J. D. & Jacobsen, Niels, 2017, In: Thai Forest Bulletin (Botany). 45, 1, p. 58-78 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Six new Cryptocoryne taxa (Araceae) from Kalimantan, Borneo

    Wongso, S., Bastmeijer, J. D., Budianto, H., Ipor, I. B., Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2017, In: Willdenowia. 47, 3, p. 325-339 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    SEM study of surface structures of the spathe in Cryptocoryne and Lagenandra (Araceae: Aroideae: Cryptocoryneae)

    Ørgaard, Marian & Jacobsen, Niels, 1998, In: Botanical Journal of the Linnean Society. 126, p. 261-289 29 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Pogostémon helféri (Hook.f.) Press (Lamiaceae), eine neue Aquarienpflanze aus Thailand

    Prasartkul, A. & Jacobsen, Niels, 2004, In: Aqua Planta. 24, 4, p. 143-148 6 p.

    Research output: Contribution to journal › Journal article › Communication

  33. Published

    Planterne i florilegierne

    Arnklit, F., Frederiksen, S. E., Hansen, Hans Vilhelm, Jacobsen, Niels, Jørgensen, L. B., Møller, J. D., Rasmussen, Finn N. & Tybjerg, H., 2013, Blomster og verdenssyn. Pedersen, E. D. L. F. & Poulsen, H. K. (eds.). Statens Museum for Kunst, p. 197-209 13 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  34. Published

    Plant Identifications in the Green Forilegium

    Arnklit, F., Frederiksen, S. E., Hansen, Hans Vilhelm, Jacobsen, Niels, Jørgensen, L. B., Møller, J. D., Rasmussen, Finn N. & Tybjerg, H., 2013, The Green Florilegium. Poulsen, H. K. (ed.). München: Prestel verlag, Munich, p. 225-247

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  35. Published

    Phylogeny of selected Cryptocoryne species in Malaysia based on 5' trnK sequence variation of chloroplast DNA

    Sofiman Othman, A. & Jacobsen, Niels, 2008, Systematics 2008, Programme and Abstracts. p. 324 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  36. Published

    Permanent genetic resources added to molecular ecology resources database 1 june 2011–31 july 2011

    Barker, F. K., Bell, J. J., Bogdanowicz, S. M., Bonatto, S. L., Cezilly, F., Collins, S. M., Dubreuil, C., Dufort, M. J., Eraud, C., Fuseya, R., Heap, E. A., Jacobsen, N., Madders, M., McEwing, R., Michel, A. P., Mougeot, F., Ogden, R. S., Orantes, L. C., Othman, A. S., Parent, É. & 13 others, Pulikdo-Santacruz, P., Rioux-Paré, R., Roberts, M. F., Rosazlina, R., Sakamoto, T., de-León, P. S., Sévigny, J., St-Onge, P., Terraube, J., Tingay, R. E., Tremblay, R., Watanabe, S. & Wattier, R. A., 2011, In: Molecular Ecology Resources. 11, 6, p. 1124-1126 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    OnCryptocoryne cordata var. siamensis

    Jacobsen, Niels & Bastmeijer, J. D., 2014, In: The Aquatic Gardener. 27, 3, p. 29-39 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    On the identity of Cryptocoryne pygmaea (Araceae) from Western Mindanao and the description of a new species from the islands of Palawan and Busuanga

    Naive, M. A. K., Bastmeijer, J. D. & Jacobsen, Niels, 2022, In: Phytotaxa. 572, 3, p. 295-300 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    On the Diptera pollinators of Cryptocoryne (Araceae)

    Jacobsen, Niels & Ørgaard, Marian, 2018, In: Aroideana. 41, 2-3, p. 218-236

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    New taxonomical considerations and nomenclatural changes in the Cryptocoryne cordata complex (Araceae)

    Jacobsen, Niels, Wongso, S. & Ørgaard, Marian, 2023, In: Aroideana. 46, 3, 23 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    New Cryptocoryne (Araceae) from West Kalimantan, Indonesia: a new species and a new interspecific natural hybrid

    Asih, N. P. S., Wongso, S., Hendrik, Bastmeijer, J. D., Reitel, S., Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2022, In: Aroideana. 45, 1, p. 296-312 17 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Neuguinea - Rätsel um Cryptocoryne versteegii und Cryptocoryne dewitii

    Jacobsen, Niels, Bastmeijer, J. D., Idei, T., Takahashi, N., Wongso, S. & Ørgaard, Marian, 2016, In: Aqua Planta. 4, p. 130-141 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Neue Veröffentlichungen über Cryptocoryne-Hybriden aus dem Süden West-Malaysias

    Jacobsen, Niels & Muth, H. (Translator), 2021, In: Aqua Planta. 1, p. 13-19 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Natural hybridization – recombination – an ever-ongoing process

    Jacobsen, Niels & Ørgaard, Marian, 2017, Abstract of 17th Flora of Thailand Conference: Taxonomic knowledge and a sustainable future. p. 41 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  45. Published

    Natural hybridization – recombination – an ever-ongoing process

    Jacobsen, Niels & Ørgaard, Marian, 2019, In: Thai Forest Bulletin. 47, 1, p. 19-28

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    Molecular evidence of the hybrid origin of Cryptocoryne xpurpurea Ridl. nothovar. purpurea (Araceae)

    Rosazlina, R., Jacobsen, Niels, Ørgaard, Marian & Othman, A. S., 2021, In: PLoS ONE. 16, 1, 14 p., 0239499.

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Molecular cytogenetics in the genus Crocus L.

    Ørgaard, Marian, Jacobsen, Niels & Heslop-Harrison, S., 1995, Ikke angivet. Brandham, P. E. A. B. M. D. (ed.). Royal Botanic Gardens, p. 291-300 10 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  48. Published

    Liljer som have- og potteplanter

    Kristiansen, K. M., Ørgaard, Marian & Jacobsen, Niels, 2000, In: Groen Viden, Havebrug. 128, p. 1-8 8 p.

    Research output: Contribution to journal › Journal article › Communication

  49. Published

    Liljer i potter

    Ørgaard, Marian & Jacobsen, Niels, 1996, In: Gartner Tidende. 112, 8, p. 14-15 2 p.

    Research output: Contribution to journal › Journal article › Communication

  50. Published

    Karyotype differentiation and evolution in the genus Hordeum (Poaceae)

    Linde-Laursen, I., Bothmer, R. V. & Jacobsen, Niels, 1995, Ikke angivet. Brandham, P. E. A. B. M. D. (ed.). Royal Botanic Gardens, p. 233-247 15 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

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