Personlig profil
Kort præsentation
I am a botanist studying how plants change through time—from historical collections to modern ecosystems—to understand why some species persist while others are lost in the Anthropocene.
My research focuses on temporal dynamics across biological levels, linking genomics, phenology, functional traits, and growth, to uncover the mechanisms that determine species resilience and loss under global change.
I take an integrative, evolutionary approach, combining historical and modern data, modern field studies and resurveys, and emerging tools in spectroscopy, genomics, and data science, to reconstruct long-term plant responses to environmental change. I often focus on species at the edges of their ranges and edaphic specialists in irreplaceable habitats, where signals of resilience and collapse are most pronounced.
Current research
- Resilience and loss in relict plants. Identifying functional, phenological, and genomic mechanisms of persistence across centuries of change
- Phenological responses to climate change. Detecting shifts and mismatches using intergrated phenology data
- Extreme weather and plant dynamics. Understanding how drought and climate variability shape phenology, growth, and species responses
- Trait and growth dynamics in Arctic and temperate plants. Linking environmental change to plant performance over time
Students and postdocs interested in plant evolution, global change biology, conservation, or natural history collections are very welcome to get in touch.
CV
- 2024-present: Assistant professor (tenure-track) & curator, Science & Society Section, Natural History Museum of Denmark
- 2021-2023: Science & Society Section - Citizen Science and Exhibition Content Scientist, Natural History Museum of Denmark
- 2017-2021: Postdoc, Citizen Science & Botany Sections, Natural History Museum of Denmark.
- 2014-2017: MedPlant Marie Curie PhD Fellow, Natural History Museum of Denmark. Travel routes of a worldwide weed, Plantago major, and biogeographic origins of island endemics in the genus Plantago.
- 2006-2014: Herbarium Curator and Field Botanist, Royal Botanical Gardens, Ontario, Canada.
- 2001-2006: Botanist/Landscape Ecologist, Toronto Region Conservation Authority, Ontario, Canada.
- 2001: Master’s degree in forest conservation, University of Toronto.
- 1999: Bachelor’s degree in botanical science, McGill University.
Primære forskningsområder
Temporal dynamics in the Anthropocene, species conservation, persistence and loss, plant phenology and climate change, functional traits, population genomics and phylogeography, historical ecology, edge-of-range populations, edaphic specialist plants, reflectance spectroscopy, integrative taxonomy, plant biogeography (Cyperaceae, Poaceae), citizen science
Undervisnings- og vejledningsområder
Citizen Science (PhD course / MSc course), Plant-Animal Interactions (BSc), Conservation (BSc), Conservation Biology (MSc), Tropical Botany, Science Communication and Outreach (MSc). Visit our Museum webpage for details.
Uddannelse (Akademiske kvalifikationer)
PhD in Botany, phylogeography, Travel tales of a worldwide weed: Predicting chemotypes from migration routes and habitats, Københavns Universitet
1 mar. 2014 → 8 dec. 2017
Dimissionsdato: 6 okt. 2017
Emneord
- Det Natur- og Biovidenskabelige Fakultet
Samarbejde og topforskningsområder i de sidste fem år
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Above and Belowground Microbes Are Associated with Variation of the Leaf Metabolome, but Herbivory Has Nominal Effects
Barnes, C. J., Hilton, S., Nielsen, I. B., Iwanycki Ahlstrand, N. E., Hansen, A. J., Frøslev, T. G., Rønsted, N. & Bending, G. D., 2026, I: Phytobiomes Journal.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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Harmonising digitised herbarium data to enhance biodiversity knowledge: Major steps towards an updated checklist for the flora of Greenland
Whitley, B. S., Abermann, J., Alsos, I. G., Biersma, E. M., Gårdman, V., Høye, T. T., Jones, L., Khelidj, N. M., Li, Z., Losapio, G., Pape, T., Raundrup, K., Schmitz, P., Silva, T., Wirta, H., Roslin, T., Ahlstrand, N. I. & de Vere, N., 2026, (E-pub ahead of print) I: Plants People Planet. 15 s.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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Herbarium specimens reveal drivers of Arctic shrub growth
Ahlstrand, N. I., Panchen, Z. A., Bjorkman, A. D. & Speed, J. D. M., 2026, (E-pub ahead of print) I: New Phytologist. 8 s.Publikation: Bidrag til tidsskrift › Letter › peer review
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Next-generation specimen digitization: capturing reflectance spectra from the world's herbaria for modeling plant biology across time, space, and taxa
Cavender-Bares, J., White, D. M., Ahlstrand, N. I., Austin, M. W., Bastianelli, D., Bazan, S., Boughalmi, K., Cardinal-McTeague, W., Chacón-Madrigal, E., Couvreur, T. L. P., Davis, C., Durgante, F. M., Grace, O. M., Guzmán Q., J. A., Hansen, K., Hernández-Leal, M. S., Hopkins, M. J. G., Jackson, R., Kothari, S. & Lee, A. K. & 13 flere, , 2026, (E-pub ahead of print) I: New Phytologist. 21 s.Publikation: Bidrag til tidsskrift › Review › peer review
1 Citationer (Scopus) -
The promise of digital herbarium specimens in large-scale phenology research
Ahlstrand, N. I., Primack, R. B., Austin, M. W., Panchen, Z. A., Römermann, C. & Miller-Rushing, A. J., 2026, (E-pub ahead of print) I: New Phytologist. 8 s.Publikation: Bidrag til tidsskrift › Leder › Forskning › peer review
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Genome sequencing of three Polyscias species reveals common features in terpene synthase gene family evolution in these species
Bai, M., Yang, X., Lorence, D. H., Wood, K. R., Ahlstrand, N. I., Flynn, T. W., Zhao, S., Rønsted, N. & Simonsen, H. T., 2025, I: The Plant Genome. 18, 1, 27 s., e20563.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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Beyond the usual suspects: using cross-sectoral partnerships to target and engage new citizen scientists
Ahlstrand, N. I. & Tøttrup, A. P., 2023, I: Frontiers in Environmental Science. 11, 9 s., 1254047.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
Åben adgangFil1 Citationer (Scopus)56 Downloads (Pure) -
Digitization of the Greenland Vascular Plant Herbarium as a Unique Research Infrastructure to Study Arctic Climate Change and Inform Nature Management
Iwanycki Ahlstrand, N., 2023, I: Collections: A journal for Museum and Archives Professionals. 19, 3, s. 310-321 12 s.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Formidling