Niels Jacobsen

Research output

Research output per year 1976 2002 2003 2004 2006 2007 2008 2010 2013 2015 2016 2017 2019 2019

• 61 Journal article
• 8 Book chapter
• 7 Book
• 6 Conference abstract in proceedings
• 6 More
  • 2 Article in proceedings
  • 1 Report chapter
  • 1 Conference abstract in journal
  • 1 Conference article
  • 1 Contribution to newspaper - Feature article

Research output per year

Research output per year

Search results

• 2019

  Artificial hybrids in Cryptocoryne (Araceae). 1. Hybridization between Sri Lankan species within the 2n = 28 chromosome group

  Jacobsen, N. & Ørgaard, M., 2019, In: Aroideana. 42, 1, p. 76-106

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

• Artificial hybrids in Cryptocoryne (Araceae). 2. Hybridization between species of the Malay Peninsula

  Jacobsen, N., Bastmeijer, J. D., Bin Othman, A. S., Sookchaloem, D. & Ørgaard, M., 2019, In: Aroideana. 42, 1, p. 107-137

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

• Cryptocoryne ciliata var. bogneri - eine neue tetraploide Varietät aus Sarawak

  Jacobsen, N., Bastmeijer, J. D., Jensen, K. R. & Ørgaard, M., 2019, In: Aqua Planta. 2, p. 52-63 6 p.

  Research output: Contribution to journal › Journal article › Research

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

  Wongso, S., Asih, N. P. S., Bastmeijer, J. D., Jensen, K. R., Reichert, W., Ørgaard, M. & Jacobsen, N., 2019, In: Taiwania. 64, 3, p. 326-338

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

  • Araceae 100%
  • Indonesia 76%
  • tetraploidy 53%
  • diploidy 46%
  • triploidy 29%
  1 Citation (Scopus)

• Lagenandra keralensis und L. meeboldii

  Jacobsen, N., Bastmeijer, J. D., Wongso, S. & Ørgaard, M., 2019, In: Aqua Planta. 3, p. 84-91

  Research output: Contribution to journal › Journal article › Research

• Natural hybridization – recombination – an ever-ongoing process

  Jacobsen, N. & Ørgaard, M., 2019, In: Thai Forest Bulletin (Botany). 47, 1, p. 19-28

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

  • recombination 100%
  • hybridization 71%
  • glaciation 38%
  • Araceae 36%
  • interspecific hybridization 36%
  1 Citation (Scopus)
• 2018

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

  Jacobsen, N., Bastmeijer, J. D., Jensen, K. R. & Ørgaard, M., Nov 2018, In: Willdenowia. 48, 3, p. 425-432

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

  • Araceae 100%
  • new variety 94%
  • Borneo 92%
  • chromosome 86%
  • Malaysia 81%
  49 Downloads (Pure)

• On the Diptera pollinators of Cryptocoryne (Araceae)

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

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

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

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

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2017

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

  Jacobsen, N., Bastmeijer, J., Christensen, C., Idei, T., Lange, C. B. A., Orabi, J., Sookchaloem, D., Toneatto, F. & Ørgaard, M., 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

• Cryptocoryne crispatula var. Tonkinensis and var. Kubotae

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

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

• Cryptocoryne crispatula var. tonkinensis und var. kubotae

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

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

• Natural hybridization – recombination – an ever-ongoing process

  Jacobsen, N. & Ørgaard, M., 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

• Six new Cryptocoryne taxa (Araceae) from Kalimantan, Borneo

  Wongso, S., Bastmeijer, J. D., Budianto, H., Ipor, I. B., Munk, K. R., Ørgaard, M. & Jacobsen, N., Oct 2017, In: Willdenowia. 47, 3, p. 325-339 16 p.

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

  • Araceae 100%
  • new taxon 98%
  • Borneo 92%
  • new taxa 91%
  • mountain 54%
  5 Citations (Scopus)

  126 Downloads (Pure)

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

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

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

  • Mekong River 100%
  • dam construction 76%
  • Araceae 75%
  • Thailand 58%
  • extinction 57%
  1 Citation (Scopus)

  51 Downloads (Pure)
• 2016

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

  Jacobsen, N., Bastmeijer, J. D., Ipor, I., Munk, K. R., Wongso, S. & Ørgaard, M., 2016, In: Aqua Planta. 2, p. 54-66 13 p.

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

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

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

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

  • seed morphology 100%
  • Araceae 92%
  • Borneo 85%
  • Ciliophora 81%
  • branches 78%
  3 Citations (Scopus)

• Cryptocoryne wongsoi (Araceae), a new species from Sumatera, Indonesia

  Bastmeijer, J. D., Budianto, H., Ipor, I. B., Ørgaard, M. & Jacobsen, N., 2016, In: Aroideana. 39, 2, p. 4-14 11 p.

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

• Cryptocoryne x batangkayensis and notes on some other hybrids

  Jacobsen, N., Bastmeijer, J. D., Ipor, I. B., Munk, K. R., Wongso, S. & Ørgaard, M., 2016, In: The Aquatic Gardener. 29, 4, p. 37-45 9 p.

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

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

  Jacobsen, N., 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, M., 2016, In: Thai Forest Bulletin (Botany). 44, 1, p. 53-73 21 p.

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

  • Araceae 100%
  • Thailand 77%
  • flora 76%
  • hybridization 65%
  • heterosis 18%
  4 Citations (Scopus)

• Neuguinea - Rätsel um Cryptocoryne versteegii und Cryptocoryne dewitii

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

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2015

  A new calcicolous variety of Cryptocoryne nurii Furtado (Araceae) from Pahang, Peninsular Malaysia

  Jacobsen, N., Bastmeijer, J. D., Ganapathy, H. B., Mangsor, K. N. A., Mansor, M., Sofiman Othman, A., Rahman, S. N. A., Rosazlina, R. & Siow, J., 2015, In: Malayan Nature Journal. 65, 4, p. 230-239 10 p.

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

• A new variety of Cryptocoryne crispatula Engl. (Araceae) from Thailand

  Jacobsen, N., Bastmeijer, J., Bongcheewin, B., Idei, T., Sookchaloem, D. & Ørgaard, M., 2015, In: Thai Forest Bulletin (Botany). 43, p. 104-110 7 p.

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

• Cryptocoryne nurii var. raubensis, a new calcicolousvariety from Pahang, Peninsular Malaysia

  Jacobsen, N., Bastmeijer, J. D., Ganapathy, H. B., Mangsor, K. N. A., Mansor, M., Othman, A. S., Rahman, S. N. A., Rosazlina, R. & Siow, J., 2015, In: The Aquatic Gardener. 28, 2, p. 32-43 12 p.

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

• Cryptocoryne xbatangkayanensis (Araceae), a new hybrid from Sarawak

  Ipor, I. B., Ørgaard, M. & Jacobsen, N., 27 Jul 2015, In: Willdenowia. 45, 2, p. 183-187 5 p.

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

  • hybrid species 100%
  • Araceae 84%
  • parentage 81%
  • Borneo 77%
  • Malaysia 68%
  2 Citations (Scopus)

  583 Downloads (Pure)

• Einige Fundorte vonCryptocoryne crispatula (Araceae) in nördlichen Vietnam

  Jacobsen, N., Gersthofen, J. B., Van Du, N., Hong, Q. B. & Ørgaard, M., 2015, In: Aqua Planta. 40, 3, p. 92-104 13 p.

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

• The identity of Cryptocoryne crispatula var. tonkinensis (Araceae)

  Jacobsen, N., Bastmeijer, J. D., Bogner, J., Du, N. V., Hong, Q. B. & Ørgaard, M., 27 Jul 2015, In: Willdenowia. 45, 2, p. 177-182 6 p.

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

  • Araceae 100%
  • Vietnam 57%
  • material 33%
  • Thailand 25%
  • China 17%
  1 Citation (Scopus)

  762 Downloads (Pure)

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

  Jacobsen, N., Bastmeijer, J., Christensen, C., Idei, T., Lange, C. B. A., Orabi, J., Sookchaloem, D., Toneatto, F. & Ørgaard, M., 2015, In: Aroideana. 38E, 1, p. 186-193 8 p.

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

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

  Rosazlina, R., Jacobsen, N., Ørgaard, M. & Othman, A. S., 1 Aug 2015, In: Biochemical Systematics and Ecology. 61, p. 385-389 5 p.

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

  • Araceae 100%
  • aquatic plant 65%
  • tropical plants 64%
  • aquatic plants 62%
  • Microsatellite Repeats 59%
  4 Citations (Scopus)
• 2014

  A new variety of Cryptocoryne versteegii (Araceae) from Irian Jaya Tengah, Indonesia

  Jacobsen, N., Bastmeijer, J. D., Edwards, P. J., Johns, R. J., Taka-Hashi, N. & Wongso, S., 1 Dec 2014, In: Willdenowia. 44, 3, p. 385-391 7 p.

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

  • New Guinea 100%
  • Araceae 99%
  • new variety 93%
  • Indonesia 75%
  • mangroves (trees) 47%
  1492 Downloads (Pure)

• Cryptocoryne matakensis (Araceae, eine neue Art von den Anambas-Inseln (Indonesien)

  Bastmeijer, J. D., Nagasawa, K. & Jacobsen, N., 2014, In: Aqua Planta. 2, p. 64-71 8 p.

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

• OnCryptocoryne cordata var. siamensis

  Jacobsen, N. & 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
• 2013

  Cryptocoryne ferruginea Engl. from Sekadau, West KAlimantan province, Indonesia

  Bastmeijer, J. D., Kishi, H., Takahashi, N., Wongso, S. & Jacobsen, N., 2013, In: The Aquatic Gardener. 26, 4, p. 33-38 6 p.

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

• Eine neue Varietät der Cryptocorryne ferruginea Engl. von Sekadau, West alimantan, Indonesien

  Bastmeijer, J. D., Kishi, H., Takahashi, N., Wongso, S. & Jacobsen, N., 2013, In: Aqua Planta. 3, p. 84-93 10 p.

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

  600 Downloads (Pure)

• Planterne i florilegierne

  Arnklit, F., Frederiksen, S. E., Hansen, H. V., Jacobsen, N., Jørgensen, L. B., Møller, J. D., Rasmussen, F. 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

• Plant Identifications in the Green Forilegium

  Arnklit, F., Frederiksen, S. E., Hansen, H. V., Jacobsen, N., Jørgensen, L. B., Møller, J. D., Rasmussen, F. 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

• The plants in the Florilegia

  Arnklit, F., Frederiksen, S., Hansen, H. V., Jacobsen, N., Jørgensen, L. B., Møller, J. D., Rasmussen, F. 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
• 2012

  Araceae

  Boyce, P. C., Sookchaloem, D., Hettterscheid, W. L. A., Gusman, G., Jacobsen, N., Idei, T. & Van Du, N., 2012, Flora of Thailand: Acoraceae & Araceae. The Forest Herbarium, Vol. 11, Part 2. p. 101-321 + Plates XLV-LVIII

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
• 2011

  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 othersPulikdo-Santacruz, P., Rioux-Paré, R., Roberts, M. F., Rosazlina, R., Sakamoto, T., de-León, P. S., Sévigny, J-M., St-Onge, P., Terraube, J., Tingay, R. E., Tremblay, R., Watanabe, S. & Wattier, R. A., Nov 2011, In: Molecular Ecology Resources. 11, 6, p. 1124-1126 3 p.

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

  13 Citations (Scopus)

• Stort potentiale til sikring af fremtidens fødevarer

  Jacobsen, N., Jacobsen, S-E. & Sørensen, M., 2011, In: Jord og Viden. 5, p. 14-15 2 p.

  Research output: Contribution to journal › Journal article › Research
• 2010

  Araceae

  Heng, L., Guanghua, Z., Boyce, P. C., Murata, J., Hetterscheid, W. L. A., Bogner, J. & Jacobsen, N., 2010, Flora of China: Acoraceae through Cyperaceae. Zhengyi, W., Raven, P. H. & Deyuan, H. (eds.). Beijing: Science Press, Beijing, Vol. 23. p. 3-5 3 p.

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

• Complex metabolism of aromatic glucosinolates in Pieris rapae caterpillars involving nitrile formation, hydroxylation, demethylation, sulfation, and host plant dependent carboxylic acid formation

  Agerbirk, N., Olsen, C. E., Poulsen, E., Jacobsen, N. & Hansen, P. R., Feb 2010, In: Insect Biochemistry and Molecular Biology. 40, 2, p. 126-137 12 p.

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

  • Glucosinolates 100%
  • Nitriles 97%
  • Glucosinolate 90%
  • Pieris rapae 84%
  • Arabis 80%
  30 Citations (Scopus)

• Cryptocoryne: Fischer ex Wydler, Linnaea 5:428. 1830.

  Heng, L. & Jacobsen, N., 2010, Flora of China: Acoraceae through Cyperaceae. Zhengyi, W., Raven, P. H. & Deyuan, H. (eds.). Beijing: Science Press, Beijing, Vol. 23. p. 20-22 3 p.

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

• GMO-afgrøder ikke den eneste løsning

  Jacobsen, N., Jacobsen, S-E. & Sørensen, M., 12 Jul 2010, In: Berlingske Tidende. p. 9

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

  402 Downloads (Pure)
• 2009

  Cryptocoryne of peninsular Malaysia

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

  Research output: Book/Report › Book › Research › peer-review
• 2008

  Crocus - Evolution and domestication

  Ørgaard, M. & Jacobsen, N., 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

  841 Downloads (Pure)

• Elements of the evolution in the genus Cryptocoryne (Araceae)

  Jacobsen, N., Lange, C. B. A., Bastmeijer, J., Budianto, H., Idei, T., Ipor, I. B., Bin Othman, A. S., Sookchaloem, D., Wongso, S. & Ørgaard, M., 2008, Monocots IV: Abstracts. p. 32 1 p.

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

  1281 Downloads (Pure)

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

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

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

  466 Downloads (Pure)

• The Cryptocoryne (Araceae) of Thailand

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

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

  293 Downloads (Pure)
• 2007

  Crocus in the northeastern Mediterranean region

  Ørgaard, M., Jacobsen, N. & 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