Niels Jacobsen

Niels Jacobsen

Professor, emeritus

ORCID: 0000-0003-3932-1293

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  1. Published

    Crocus in the northeastern Mediterranean region

    Ørgaard, Marian, Jacobsen, Niels & Heslop-Harrison, J. S., 2007, In: Chromosome Research. 15, Suppl. 1, p. 10 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  2. Published

    Crocus - Evolution and domestication

    Ørgaard, Marian & Jacobsen, Niels, 2008, Xth Symposium of the International Organisation of Plant Biosystematists. p. 17 1 p.

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

  3. 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

  4. Published

    Iagttagelser af Crocus cartwrightianus - en nær slægtning til safrankrokus

    Ørgaard, Marian & Jacobsen, Niels, 2004, In: Den Alpine Have. 82, p. 10-14 4 p.

    Research output: Contribution to journal › Journal article › Communication

  5. 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

  6. 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

  7. Published

    Cryptocoryne hybrids (Araceae) 4: A Cryptocoryne hybrid from the Meratus mountains, South Kalimantan, Indonesia

    Wongso, S., Bastmeijer, J. D., Idei, T., Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2020, In: Aroideana. 43, 1&2, p. 285-298 14 p.

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

  8. Published

    A new Cryptocoryne species (Araceae) from the Schwaner mountains, West Kalimantan, Indonesia

    Wongso, S., Hendrik, Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2020, In: Nordic Journal of Botany. 38, 4, 5 p., 02716.

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

  9. Published

    Four new Cryptocoryne (Araceae) from Sumatera, Indonesia: variety and three interspecific natural hybrids

    Wongso, S., Asih, N. P. S., Bastmeijer, J. D., Jensen, Karen Rysbjerg, Reichert, W., Ørgaard, Marian & Jacobsen, Niels, 2019, In: Taiwania. 64, 3, p. 326-338

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

  10. Published

    Cryptocoryne aura (Araceae), a new species from West Kalimantan, Indonesia

    Wongso, S., Ipor, I. B., Tawan, C. S., Budianto, H., Bastmeijer, J. D. & Jacobsen, Niels, 2016, In: Willdenowia. 46, 2, p. 275-282 8 p.

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

  11. Published

    Cryptocoryne-Hybriden (Araceae): Cryptocoryne x ikezewaldiae und C. x agusii, zwei neue Hybriden aus West-Kalimantan, Indonesien

    Wongso, S., Bastmeijer, J. D., Hendrik, Jensen, Karen Rysbjerg, Kishi, H., Ørgaard, Marian, Takahashi, N. & Jacobsen, Niels, 2020, In: Aqua Planta. 45, 2, p. 44-57 14 p.

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

  12. 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

  13. Published

    Graft-derived anti-HPA-2b production after allogeneic bone-marrow transplantation

    Taaning, E., Jacobsen, Niels & Morling, Niels, 1994, In: British Journal of Haematology. 86, 3, p. 651-3 2 p.

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

  14. 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

  15. 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

  16. 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

  17. 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

  18. Published

    Flora i kridt

    Rasmussen, Hanne Nina, Jacobsen, Niels & Rasmussen, Finn N., 1978, Beretning og regnskab for selskabets 88. regnskabsår 1977, Ålborg Portland. Ålborg, p. 19-24 6 p.

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

  19. 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

  20. Published

    Cryptocoryne of peninsular Malaysia

    Othman, A. S., Jacobsen, Niels & Mansor, M., 2009, Penerbit Universiti Sains Malaysia. 102 p.

    Research output: Book/Report › Book › Research › peer-review

  21. Published

    Farvestoffer i krokus: blomsterfarvernes kemi hjælper med at belyse slægtskabet

    Nørbæk, R., Ørgaard, Marian & Jacobsen, Niels, 2002, In: Naturens Verden. 85, 6, p. 34-37 4 p.

    Research output: Contribution to journal › Journal article › Research

  22. Published

    Flower pigment composition of Crocus species and cultivars used for a chemotaxonomic investigation

    Nørbæk, R., Brandt, K., Kvist Nielsen, J., Ørgaard, Marian & Jacobsen, Niels, 2002, In: Biochemical Systematics and Ecology. 30, 8, p. 763-791 29 p.

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

  23. Published

    Discovery through citizen science: Cryptocoryne paglaterasiana (Araceae), a new endangered species from Tampilisan, Zamboanga del Norte, Western Mindanao

    Naive, M. A. K., Lagud, Y. J. & Jacobsen, Niels, 2022, In: Taiwania. 67, 4, p. 539-543 5 p.

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

  24. 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

  25. Published

    Discovery through citizen science II: Cryptocoryne vinzelii (Araceae), a new species of water trumpet from Basilan Island, Philippines

    Naive, M. A. K., Duhaylungsod, A. B. & Jacobsen, Niels, 2023, In: Taiwania. 68, 3, p. 294-297 4 p.

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

  26. Published

    Cryptocoryne esquerionii (Araceae), a remarkable new species discovered by a citizen scientist in Zamboanga Peninsula, southwestern Philippines

    Mark, A. K. N., Reagan, J. T. V., Wongso, S. & Jacobsen, Niels, 2023, In: Nordic Journal of Botany. 2023, 3

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

  27. 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

  28. 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

  29. 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

  30. Published

    Udvidet systematisk botanik bind 1: MAGNOLIFLORAE@2013VIOLIFLORAE

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

    Research output: Book/Report › Book › Education

  31. 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

  32. 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

  33. 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

  34. Published

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

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

    Research output: Book/Report › Book › Education

  35. 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

  36. Published

    In the memory of Josef Bogner

    Jacobsen, Niels, 2020, In: The IAS Newsletter. 42, 2, p. 5-6 2 p.

    Research output: Contribution to journal › Journal article › Research

  37. Published

    Hybrids and the Flora of Thailand revisited: hybridization in the South-East Asian genus Cryptocoryne (Araceae)

    Jacobsen, Niels, Bastmeijer, J. D., Bogner, J., Budianto, H., Ganapathy, H. B., Idei, T., Ipor, I. B., Komala, T., Othman, A. S., Rosazlina, R., Siow, J., Wongso, S. & Ørgaard, Marian, 2016, In: Thai Forest Bulletin (Botany). 44, 1, p. 53-73 21 p.

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

  38. Published

    Cryptocoryne crispatula (Araceae) in Thailand seen with the help of AFLP glasses

    Jacobsen, Niels, Bastmeijer, J., Christensen, C., Idei, T., Lange, Conny Bruun Asmussen, Orabi, J., Sookchaloem, D., Toneatto, F. & Ørgaard, Marian, 2017, Abstract of 17th Flora of Thailand Conference: Taxonomic knowledge and a sustainable future. p. 143 1 p.

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

  39. 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

  40. Published

    Cryptocoryne crispatula var. tonkinensis und var. kubotae

    Jacobsen, Niels, Bastmeijer, J. D., Ørgaard, Marian & Bogner, J. (Translator), 2017, In: Aqua Planta. 3, p. 90-102 13 p.

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

  41. Published

    Josef Bogner — and the genus Cryptocoryne

    Jacobsen, Niels, 2021, In: Aroideana. 44, 1, p. 82-109

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

  42. Published

    Cryptocoryne crispatula var. Tonkinensis and var. Kubotae

    Jacobsen, Niels, Bastmeijer, J. D. & Ørgaard, Marian, 2017, In: The Aquatic Gardener. 30, 4, p. 24-31 8 p.

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

  43. Published

    Jan Dirk Bastmeijer: (22 October 1943 – 18 February 2022)

    Jacobsen, Niels & Wongso, S., 2022, In: Aroideana. 45, 2, p. 444-470 27 p.

    Research output: Contribution to journal › Journal article › Research

  44. 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

  45. Published

    GMO-afgrøder ikke den eneste løsning

    Jacobsen, Niels, Jacobsen, S. & Sørensen, Marten, 12 Jul 2010, In: Berlingske Tidende. p. 9

    Research output: Contribution to journal › Contribution to newspaper - Feature article › Communication

  46. 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

  47. Published

    Elements of the evolution in the genus Cryptocoryne (Araceae)

    Jacobsen, Niels, Lange, Conny Bruun Asmussen, Bastmeijer, J., Budianto, H., Idei, T., Ipor, I. B., Bin Othman, A. S., Sookchaloem, D., Wongso, S. & Ørgaard, Marian, 2008, Monocots IV: Abstracts. p. 32 1 p.

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

  48. Published

    Cryptocoryne ×batangkayanensis (Araceae) und Bemerkungen zu einigen anderen Hybriden

    Jacobsen, Niels, Bastmeijer, J. D., Ipor, I., Jensen, Karen Rysbjerg, Wongso, S. & Ørgaard, Marian, 2016, In: Aqua Planta. 2, p. 54-66 13 p.

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

  49. 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

  50. Published

    A new tetraploid variety of Cryptocoryne ciliata (Araceae) from Sarawak

    Jacobsen, Niels, Bastmeijer, J. D., Jensen, Karen Rysbjerg & Ørgaard, Marian, 2018, In: Willdenowia. 48, 3, p. 425-432

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

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ID: 32042022