2026

• Shaw, A. Jonathan; Duffy, Aaron M.; Nieto-Lugilde, Marta; Aguero, Blanka; Hassel, Kristian; Flatberg, Kjell Ivar. (2026) Genomic and phylogenetic structure of the Sphagnum imbricatum complex (Sphagnaceae) and related allopolyploids. Annals of Botany
  Academic article

2025

• Wilbraham, J.; Afanasjeva, L. V.; Ali, Sk N.; Álvaro-Alba, W. R.; Aponte-Rojas, A. M.; Bednarek-Ochyra, H.; Baráth, K.; Bell, N.; Boiko, L. M.; Boiko, M. F.. (2025) New national and regional bryophyte records, 81. Journal of Bryology
  Academic article
• Flatberg, Kjell Ivar. (2025) Minu elu turbasammaldega: tagamaad ja mälestusväärsemad lood - Background and most memorable moments of my peat-moss life. Samblasober
  Professional article
• Shaw, A. Jonathan; Nieto-Lugilde, Marta; Aguero, Blanka; Duffy, Aaron M.; Robinson, Sean; Hassel, Kristian; Flatberg, Kjell Ivar; Ingerpuu, Nele; Vellak, Kai; Pérez-Haase, Aaron. (2025) Genetic structure of the Sphagnum magellanicum (Sphagnaceae) complex in Europe. The Bryologist
  Academic article
• Hassel, Kristian; Kyrkjeeide, Magni Olsen; Bengtsson, Fia; Meleshko, Olena; Flatberg, Kjell Ivar. (2025) Nomenclatural inconsistencies in European species of Sphagnum subgen. Subsecunda with typification of Sphagnum denticulatum Brid. and S. inundatum Russow. Lindbergia
  Academic article
• Flatberg, Kjell Ivar; Hassel, Kristian; Kyrkjeeide, Magni Olsen; Prestø, Tommy. (2025) Sphagnum talbotianum R.E.Andrus, a new peatmoss species of Norway from Svalbard. Lindbergia
  Academic article
• Meleshko, Olena; Kyrkjeeide, Magni Olsen; Petlund, Hanne Torsdatter; Flatberg, Kjell Ivar; Eriksen, Line Birkeland; Martin, Sarah Louise; Hassel, Kristian. (2025) Molecular species delimitation of Sphagnum subgenus Subsecunda in Europe. Botanical journal of the Linnean Society
  Academic article

2024

• Meleshko, Olena; Martin, Michael David; Flatberg, Kjell Ivar; Stenøien, Hans Kristen; Korneliussen, Thorfinn Sand; Szövényi, Péter; Hassel, Kristian. (2024) Linked Selection and Gene Density Shape Genome-Wide Patterns of Diversification in Peatmosses. Evolutionary Applications
  Academic article

2023

• Kyrkjeeide, Magni Olsen; Meleshko, Olena; Flatberg, Kjell Ivar; Hassel, Kristian. (2023) Short stories from Sphagnum of rare species, taxonomy, and speciation. Ecology and Evolution
  Academic article
• Shaw, A. Jonathan; Nieto-Lugilde, Marta; Aguero, Blanka; Duffy, Aaron; Piatkowski, Bryan T.; Jaramillo-Chico, Juan; Robinson, Sean; Hassel, Kristian; Flatberg, Kjell Ivar; Weston, David J.. (2023) Sphagnum diabolicum sp. nov. and S. magniae sp. nov.; morphological variation and taxonomy of the "S. magellanicum complex". The Bryologist
  Academic article
• Robinson, Sean C.; Nieto-Lugilde, Marta; Duffy, Aaron M.; Muñoz, Katherine Martinez; Aguero, Blanka; Merced, Amelia; Hassel, Kristian; Flatberg, Kjell Ivar; Shaw, Shaw Jonathan. (2023) The Sphagnum cuspidatum complex: phylogeny, species delimitation, and morphology. Biological Journal of the Linnean Society
  Academic article

2022

• Flatberg, Kjell Ivar; Hassel, Kristian; Prestø, Tommy; Kyrkjeeide, Magni Olsen; Shaw, A. Jonathan; Ahti, Teuvo. (2022) Sphagnum magniporosum (Sphagnaceae, subgenus Subsecunda) a new peatmoss species from Venezuela. Lindbergia
  Academic article
• Seniczak, Anna; Seniczak, Stanislaw; Hassel, Kristian; Flatberg, Kjell Ivar. (2022) Morphological ontogeny of Platynothrus troendelagicus sp. nov. (Acari, Oribatida, Camisiidae) from Norway. Systematic and Applied Acarology
  Academic article
• Seniczak, Anna; Seniczak, Stanisław; Iturrondobeitia, J. Carlos; Marciniak, Martyna; Kaczmarek, Sławomir; Mąkol, Joanna; Kaźmierski, Andrzej; Zawal, Andrzej; Schwarzfeld, Marla D.; Flatberg, Kjell Ivar. (2022) Inclusion of juvenile stages improves diversity assessment and adds to our understanding of mite ecology – A case study from mires in Norway. Ecology and Evolution
  Academic article
• Pihlaja, Kati; Juutinen, Riikka; Sallantaus, Tapani; Syrjänen, Kimmo; Zielman, Rudi; Lüth, Michael; Ervasti, Esa; Kuitunen, Tuomo; Hassel, Kristian; Flatberg, Kjell Ivar. (2022) The annual excursion of the Nordic Bryological Society (NBS) and the Finnish Bryophyte Expert Group to Finnish Lapland in 2019. Lindbergia
  Academic article
• Nieto-Lugilde, Marta; Robinson, Sean; Aguero, Blanka; Duffy, Aaron; Imwattana, Karn; Hassel, Kristian; Flatberg, Kjell Ivar; Stenøien, Hans K.; Shkurko, Anna V.; Fedosov, Vladimir E.. (2022) Morphological-molecular incongruence in Sphagnum majus ssp. majus and ssp. norvegicum. The Bryologist
  Academic article
• Shaw, A. Jonathan; Piatkowski, Bryan; Duffy, Aaron M.; Aguero, Blanka; Imwattana, Karn; Nieto-Lugilde, Marta; Healey, Adam; Weston, David J.; Patel, Megan N.; Schmutz, Jeremy. (2022) Phylogenomic structure and speciation in an emerging model: the Sphagnum magellanicum complex (Bryophyta). New Phytologist
  Academic article
• Duffy, Aaron M; Ricca, Mariana; Robinson, Sean; Aguero, Blanka; Johnson, Matthew G; Stenøien, Hans K.; Flatberg, Kjell Ivar; Hassel, Kristian; Shaw, A. Jonathan. (2022) Heterogeneous genetic structure in eastern North American peat mosses (Sphagnum). Biological Journal of the Linnean Society
  Academic article
• Seniczak, Anna; Seniczak, Stanislaw; Iturrondobeitia, J. Carlos; Gwiazdowicz, Dariusz J.; Waldon-Rudzionek, Barbara; Flatberg, Kjell Ivar; Bolger, Thomas. (2022) Mites (Oribatida and Mesostigmata) and vegetation as complementary bioindicators in peatlands. Science of the Total Environment
  Academic article

2021

• Meleshko, Olena; Martin, Michael David; Korneliussen, Thorfinn Sand; Schröck, Christian; Lamkowski, Paul; Schmutz, Jeremy; Healey, Adam; Piatkowski, Bryan T; Shaw, A. Jonathan; Weston, David J. (2021) Extensive genome-wide phylogenetic discordance is due to incomplete lineage sorting and not ongoing introgression in a rapidly radiated bryophyte genus. Molecular Biology and Evolution (MBE)
  Academic article
• Hassel, Kristian; Stenøien, Hans K.; Meleshko, Olena; Flatberg, Kjell Ivar; Kyrkjeeide, Magni Olsen; Nilsen, Nellie Henriette. (2021) Spatial genetic structure in Northern European Sphagnum squarrosum Crome in relation to its Arctic morph. Norges teknisk-naturvitenskapelige universitet
  Master thesis
• Hassel, Kristian; Meleshko, Olena; Kyrkjeeide, Magni Olsen; Flatberg, Kjell Ivar; Petlund, Hanne Torsdatter. (2021) A genomic delimitation of European Sphagnum subgenus Subsecunda with particular emphasis on the taxonomically difficult allodiploids Sphagnum auriculatum Schimp. and Sphagnum inundatum Russow. Norges teknisk-naturvitenskapelige universitet
  Master thesis
• Nygård, Malene Østreng; Kemppainen, Petri; Speed, James D. M.; Elven, Reidar; Flatberg, Kjell Ivar; Galten, Leif Persen; Yousefi, Narjes; Solstad, Heidi; Bendiksby, Mika. (2021) Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa. Journal of Systematics and Evolution
  Academic article
• Bengtson, Fia; Rydin, Håkan; Baltzer, Jennifer L.; Bragazza, Luca; Bu, Zhao-Jun; Caporn, Simon J. M.; Dorrepaal, Ellen; Flatberg, Kjell Ivar; Galanina, Olga; Galka, Mariusz. (2021) Environmental drivers of Sphagnum growth in mires across the Holarctic region. Journal of Ecology
  Academic article

2020

• Hassel, Kristian; Kyrkjeeide, Magni Olsen; Israelsen, Markus Fjellstad; Meleshko, Olena; Stenøien, Hans K.; Flatberg, Kjell Ivar. (2020) Populasjonsstruktur, vekst og økologi hos den prioriterte arten trøndertorvmose Sphagnum troendelagicum. NTNU Vitenskapsmuseet
  Research report
• Hodgetts, N.G.; Söderström, Lars; Blockeel, T.L.; Caspari, S.; Ignatov, M.S.; Konstantinova, N.A.; Lockhart, N.; Papp, B.; Schröck, C.; Sim-Sim, M.. (2020) An annotated checklist of bryophytes of Europe, Macaronesia and Cyprus. Journal of Bryology
  Academic article
• Duffy, A; Aguero, Blanka; Stenøien, Hans K.; Flatberg, Kjell Ivar; Ignatov, MS; Hassel, Kristian; Shaw, AJ. (2020) Phylogenetic structure in the Sphagnum recurvum complex (Bryophyta: Sphagnaceae) relative to taxonomy and geography. American Journal of Botany
  Academic article
• Pihlaja, Kati; Juutinen, Riikka; Sallantaus, Tapani; Syrjänen, Kimmo; Zielman, Rudi; Lüth, Michael; Ervasti, Esa; Kuitunen, Tuomo; Hassel, Kristian; Flatberg, Kjell Ivar. (2020) The annual excursion of the Nordic Bryological Society (NBS) and the Finnish Bryophyte Expert Group to Finnish Lapland in 2019. Lindbergia
  Academic article
• Duffy, Aaron M.; Aguero, Blanka; Stenøien, Hans K.; Flatberg, Kjell Ivar; Ignatov, Michael S.; Hassel, Kristian; Shaw, A. Jonathan. (2020) Phylogenetic structure in the Sphagnum recurvum complex (Bryophyta) in relation to taxonomy and geography. American Journal of Botany
  Academic article

2019

• Yousefi, Narjes; Mikulášková, Eva; Stenøien, Hans K.; Flatberg, Kjell Ivar; Košuthová, Alica; Hájek, Michal; Hassel, Kristian. (2019) Genetic and morphological variation in the circumpolar distribution range of Sphagnum warnstorfii: indications of vicariant divergence in a common peatmoss. Botanical journal of the Linnean Society
  Academic article
• Seniczak, Anna Beata; Seniczak, Stanisław; Iturrondobeitia, J. Carlos; Solhøy, Torstein; Flatberg, Kjell Ivar. (2019) Diverse Sphagnum mosses support rich moss mite communities (Acari, Oribatida) in mires of Western Norway. Wetlands (Wilmington, N.C.)
  Academic article
• Hodgetts, Nick; Cálix, Marta; Englefield, Eve; Fettes, Nicholas; Criado, M. García; Patin, Lea; Nieto, Ana; Bergamini, Ariel; Bisang, Irene; Baisheva, Elvira. (2019) A miniature world in decline: European Red List of Mosses, Liverworts and Hornworts. International Union for Conservation of Nature (IUCN)
  Academic monograph
• Moen, Asbjørn; Flatberg, Kjell Ivar. (2019) Olaf I. Rønning (1924-2018). Det Kongelige Norske Videnskabers Selskab. Årbok
  Academic article
• Kyrkjeeide, Magni Olsen; Hassel, Kristian; Aguero, Blanka; Temsch, Eva M.; Afonina, Olga M.; Shaw, A. Jonathan; Stenøien, Hans K.; Flatberg, Kjell Ivar. (2019) Sphagnum Xlydiae, the first allotriploid peatmoss in the northern hemisphere. The Bryologist
  Academic article
• Flatberg, Kjell Ivar. (2019) Myr og myrer i Klæbu. Klæbu Historielag Årsskrift
  Popular science article

2018

• Kyrkjeeide, Magni Olsen; Hassel, Kristian; Shaw, Blanca; Shaw, Jonathan; Temsch, Eva M.; Flatberg, Kjell Ivar. (2018) Sphagnum incundum a new species in Sphagnum subg. Acutifolia (Sphagnaceae) from boreal and arctic regions of North America. Phytotaxa
  Academic article
• Karlin, Eric F.; Robinson, Sean C; Hassel, Kristian; Flatberg, Kjell Ivar. (2018) Genetic analysis of four Île Amsterdam sphagna: high morphological divergence within Sphagnum subgenus Subsecunda. Journal of Bryology
  Academic article
• Meleshko, Olena; Stenøien, Hans K.; Speed, James David Mervyn; Flatberg, Kjell Ivar; Kyrkjeeide, Magni Olsen; Hassel, Kristian. (2018) Is interspecific gene flow and speciation in peatmosses (Sphagnum) constrained by phylogenetic relationship and life-history traits?. Lindbergia
  Academic literature review
• Moen, Asbjørn; Flatberg, Kjell Ivar; Prestø, Tommy. (2018) Olaf Inge Rønning 1924-2018. Blyttia : Norsk botanisk forenings tidsskrift
  Popular science article
• Laine, Jukka; Flatberg, Kjell Ivar; Harju, Pirkko; Timonen, Tuuli; Minkkinen, Kari; Laine, Anna; Tuittila, Eeva-Stiina; Vasander, Harri. (2018) Sphagnum mosses. The Stars of European Mires. University of Helsinki
  Academic monograph
• Hassel, Kristian; Kyrkjeeide, Magni Olsen; Yousefi, Narjes; Prestø, Tommy; Stenøien, Hans K.; Shaw, Jonathan A.; Flatberg, Kjell Ivar. (2018) Sphagnum divinum (sp. nov.) and S. medium Limpr. and their relationship to S. magellanicum Brid. Journal of Bryology
  Academic article

2017

• Yousefi, Narjes; Hassel, Kristian; Flatberg, Kjell Ivar; Kemppainen, Petri; Trucchi, Emiliano; Shaw, A. Jonathan; Kyrkjeeide, Magni Olsen; Szövényi, Péter; Stenøien, Hans K.. (2017) Divergent evolution and niche differentiation within the common peatmoss Sphagnum magellanicum. American Journal of Botany
  Academic article
• Vellak, Kai; Ingerpuu, Nele; During, Heinjo; Flatberg, Kjell Ivar; Leis, Mare; Ehrlich, Loore; Kannukene, Leiti; Kupper, Tiiu. (2017) New Estonian records: Mosses. Folia Cryptogamica Estonica
  Academic article

2016

• Flatberg, Kjell Ivar; Afonina, Olga M.; Mamontov, Y.S.; Fedosov, V.E.; Ignatova, Elena A.. (2016) ON SPHAGNUM MIRUM (SUBGEN. SQUARROSA) AND S. OLAFII (SUBGEN. ACUTIFOLIA) (SPHAGNACEAE, BRYOPHYTA) IN RUSSIA. Arctoa: A Journal of Briology
  Academic article
• Kyrkjeeide, Magni Olsen; Hassel, Kristian; Flatberg, Kjell Ivar; Shaw, A. Jonathan; Brochmann, Christian; Stenøien, Hans K.. (2016) Long-distance dispersal and barriers shape genetic structure of peatmosses (Sphagnum) across the Northern Hemisphere. Journal of Biogeography
  Academic article
• Shaw, A Jonathan; Devos, Nicolas; Liu, Yang; Cox, Cymon J; Goffinet, Bernard; Flatberg, Kjell Ivar; Shaw, Blanka. (2016) Organellar phylogenomics of an emerging model system: Sphagnum (peatmoss). Annals of Botany
  Academic article
• Kyrkjeeide, Magni Olsen; Hassel, Kristian; Flatberg, Kjell Ivar; Shaw, A. Jonathan; Yousefi, Narjes; Stenøien, Hans K.. (2016) Spatial Genetic Structure of the Abundant and Widespread Peatmoss Sphagnum magellanicum Brid. PLOS ONE
  Academic article

2015

• Kyrkjeeide, Magni Olsen; Hassel, Kristian; Stenøien, Hans K.; Prestø, Tommy; Boström, Erik; Shaw, Jonathan; Flatberg, Kjell Ivar. (2015) The dark morph of Sphagnum fuscum (Schimp.) H. Klinggr. In Europe is conspecific with the North American S. beothuk. Journal of Bryology
  Academic article
• Shaw, A. J.; Shaw, Blanka; Johnson, Matthew G; Devos, Nicolas; Stenøien, Hans K.; Flatberg, Kjell Ivar; Carter, Benjamin E. (2015) Phylogenetic structure and biogeography of the Pacific Rim clade of Sphagnum subgen. Subsecunda: Haploid and allodiploid taxa. Biological Journal of the Linnean Society
  Academic article
• Shaw, A. J; Shaw, B; Stenøien, Hans K.; Golinski, Karen; Hassel, Kristian; Flatberg, Kjell Ivar. (2015) Pleistocene survival, regional genetic structure and interspecific gene flow among three northern peat-mosses: Sphagnum inexspectatum, S. orientale and S. miyabeanum. Journal of Biogeography
  Academic article

2014

• Stenøien, Hans K.; Hassel, Kristian; Segreto, Rossana; Gabriel, Rosalina; Karlin, EF; Shaw, A. J; Flatberg, Kjell Ivar. (2014) High morphological diversity in remote island populations of the peat moss Sphagnum palustre: glacial refugium, adaptive radiation or just plasticity?. The Bryologist
  Academic article
• Kyrkjeeide, Magni Olsen; Stenøien, Hans K.; Flatberg, Kjell Ivar; Hassel, Kristian. (2014) Glacial refugia and post-glacial colonization patterns in European bryophytes. Lindbergia
  Academic literature review
• Shaw, Jonathan; Golinski, Karen; Clark, EG; Shaw, Blanka; Stenøien, Hans; Flatberg, Kjell Ivar. (2014) Intercontinental genetic structure in the amphi-Pacific peatmoss Sphagnum miyabeanum (Bryophyta: Sphagnaceae). Biological Journal of the Linnean Society
  Academic article

2013

• Flatberg, Kjell Ivar; Hassel, Kristian. (2013) Utkast til handlingsplaner for gulsymre Anemone ranunculoides, norsk timian Thymus praecox subsp. arcticus, lundgrønnaks Brachypodium sylvaticum, skogflatbelg, Lathyrus sylvestris, og svartertekanpp Lathyrus niger i Nord-Trøndelag fylke. NTNU Vitenskapsmuseet
  Research report
• Flatberg, Kjell Ivar. (2013) Norges torvmoser. Akademika forlag
  Academic monograph

2012

• Karlin, EF; Hotchkiss, SC; Boles, SB; Stenøien, Hans K.; Hassel, Kristian; Flatberg, Kjell Ivar; Shaw, A. J.. (2012) High genetic diversity in a remote island population system: sans sex. New Phytologist
  Academic article
• Flatberg, Kjell Ivar. (2012) Botanikktur i Mosvik-1944 og 2012. Årbok for Mosvik Historielag
  Popular science article
• Pineiro, Rosalia; Popp, Magnus; Hassel, Kristian; Listl, Daniela; Westergaard, Kristine Bakke; Flatberg, Kjell Ivar; Stenøien, Hans K.; Brochmann, Christian. (2012) Circumarctic dispersal and long-distance colonization of South America: the moss genus Cinclidium. Journal of Biogeography
  Academic article
• Shaw, A. J; Flatberg, Kjell Ivar; Szövenyi, P; Ricca, M; Johnson, MG; Stenøien, Hans K.; Shaw, B. (2012) Systematics of the Sphagnum fimbriatum Complex: Phylogenetic Relationships, Morphological Variation, and Allopolyploidy. Systematic Botany
  Academic article
• Shaw, A. J; Shaw, B; Ricca, M; Flatberg, Kjell Ivar. (2012) A phylogenetic monograph of the Sphagnum subsecundum complex (Sphagnaceae) in eastern North America. The Bryologist
  Academic article
• Kyrkjeeide, Magni Olsen; Hassel, Kristian; Flatberg, Kjell Ivar; Stenøien, Hans K.. (2012) The rare peat moss Sphagnum wulfianum (Sphagnaceae) did not survive the last glacial period in northern European refugia. American Journal of Botany
  Academic article

2011

• Stenøien, Hans K.; Shaw, A. J.; Stengrundet, Kirsti; Flatberg, Kjell Ivar. (2011) The narrow endemic Norwegian peat moss Sphagnum troendelagicum originated before the last glacial maximum. Heredity
  Academic article
• Westergaard, Kristine Bakke; Alsos, Inger Greve; Engelskjøn, Torstein; Flatberg, Kjell Ivar; Brochmann, Christian. (2011) Trans-Atlantic genetic uniformity in the rare snowbed sedge Carex rufina. Conservation Genetics
  Academic article
• Westergaard, Kristine Bakke; Alsos, Inger Greve; Popp, Magnus; Engelskjøn, Torstein; Flatberg, Kjell Ivar; Brochmann, Christian. (2011) Glacial survival may matter after all: nunatak signatures in the rare European populations of two west-arctic species. Molecular Ecology
  Academic article
• Flatberg, Kjell Ivar; Whinam, J; Lebouvier, M. (2011) Three species of Sphagnum endemic to Ile Amsterdam, Terres Australes et Antarctiques Francaises: S. cavernulosum sp. nov., S. complanatum sp. nov. and S. islei. Journal of Bryology
  Academic article

2010

• Flatberg, Kjell Ivar. (2010) Granstarr Carex globularis, et nyfunn på Helgelandskysten, Nordland. Blyttia : Norsk botanisk forenings tidsskrift
  Academic article
• Hassel, Kristian; Blom, Hans H.; Flatberg, Kjell Ivar; Halvorsen, Rune; Johnsen, Jon Inge. (2010) Moser Anthocerophyta, Marchantiophyta, Bryophyta.
  Academic chapter
• Flatberg, Kjell Ivar; Hassel, Kristian; Kyrkjeeide, Magni Olsen. (2010) Huldretorvmose Sphagnum wulfianum i Norge, med spesiell omtale av en forekomst på Trøndelagskysten :. Blyttia : Norsk botanisk forenings tidsskrift
  Academic article
• Thingstad, Per Gustav; Aune, Egil Ingvar; Austrheim, Gunnar; Bakken, Torkild; Flatberg, Kjell Ivar; Fremstad, Eli; Frengen, Otto; Hassel, Kristian; Koksvik, Jan Ivar; Moen, Asbjørn. (2010) En bildereise gjennom vår midtnorske naturarv.
  Exhibition
• Flatberg, Kjell Ivar. (2010) Variasjonen hos vårmure Potentilla tabernaemontani i Midt-Norge: en morfologisk tilnærming. NTNU Vitenskapsmuseet
  Research report
• Flatberg, Kjell Ivar. (2010) Utkast til handlingsplaner for falkbregne Polystichum aculeatum, lakrismjelt Astragalus glycyphyllos, bakkefiol Viola collina, stavklokke Campanula cervicaria og broddbergknapp Sedum rupestre i Nord-Trøndelag fylke. NTNU Vitenskapsmuseet
  Research report

2008

• Stengrundet, Kirsti; Stenøien, Hans K.; Flatberg, Kjell Ivar. (2008) Allopolyploid speciation and origin of the endemic peat moss Sphagnum troendelagicum. NTNU, Institutt for biologi
  Master thesis
• Flatberg, Kjell Ivar. (2008) Sphagnum venustum (Bryophyta), a noticeable new species in sect. Acutifolia from Labrador, Canada. Lindbergia
  Academic article
• Shaw, A. J.; Flatberg, Kjell Ivar; Cao, T; Wang, LS; Flatberg, B; Shaw, B; Zhou, P; Boles, S; Terracciano, S. (2008) Genetic variation in three Chinese peat mosses (Sphagnum) based on microsateliite markers, with primer information and analysis of ascertainment bias. The Bryologist
  Academic article

2007

• Hassel, Kristian; Flatberg, Kjell Ivar. (2007) Kartlegging av biologisk mangfold med hovedvekt på moser og lav. Brattfossen i Lena, Agdenes kommune. NTNU Vitenskapsmuseet, Seksjon for naturistorie
  Research report
• Flatberg, Kjell Ivar. (2007) Sigurd Mjøen Såstad (1965-2006) - in memorium. Lindbergia
  Academic literature review
• Flatberg, Kjell Ivar. (2007) Sphagnum tescorum (Bryophyta), a new species in sect. Acutifolia from the Beringian region. Lindbergia
  Academic article
• Flatberg, Kjell Ivar. (2007) Contributions to the Sphagnum flora of West Greenland, with Sphagnum concinnum stat. et sp. nov. Lindbergia
  Academic article

2006

• Flatberg, Kjell Ivar; Blom, Hans H.; Hassel, Kristian; Økland, Rune H.. (2006) Moser. Anthocerophyta, Marchantiophyta, Bryophyta.
  Academic chapter
• Flatberg, Kjell Ivar; Holm, Hans H; Hassel, Kristian; Økland, Rune Halvorsen. (2006) Moser - Anthocerophyta, Marchantiophyta, Bryophyta.
  Academic chapter
• Flatberg, Kjell Ivar; Thingsgaard, Karen; Såstad, Sigurd M.. (2006) Interploidal gene flow and introgression in bryophytes: Sphagnum girgensohnii x S. russowii, a case of spontaneous neotriploidy. Journal of Bryology
  Academic article
• Hill, MO; Bell, Nicolas; Bruggeman-Nannega, NA; Brugués, Montserrat; Cano, MJ; Enroth, Johannes; Flatberg, Kjell Ivar; Frahm, Jan-Peter; Gallego, MT; Garilletti, Ricardo. (2006) An annotated checklist of the mosses of Europe and Macaronesia. Journal of Bryology
  Academic literature review
• Flatberg, Kjell Ivar. (2006) Primula og Primulahagen på Ringve. Bli med ut!
  Popular science article

2005

• Flatberg, Kjell Ivar. (2005) Plantelivet i Haltdalen.
  Academic chapter
• Flatberg, Kjell Ivar. (2005) Rognsot. Bli med ut!
  Popular science article
• Flatberg, Kjell Ivar. (2005) Pors: markas krydderplante. Bli med ut!
  Popular science article
• Flatberg, Kjell Ivar. (2005) Torvmosene: myras skaper. Bli med ut!
  Popular science article
• Flatberg, Kjell Ivar. (2005) Jernoker på myra. Bli med ut!
  Popular science article
• Flatberg, Kjell Ivar. (2005) Furu og gran fra blomst til frø. Bli med ut!
  Popular science article
• Flatberg, Kjell Ivar. (2005) Taxonomy, geography and possible origin of Sphagnum inexspectatum (sect. Subsecunda) sp. nov. Lindbergia
  Academic article
• Flatberg, Kjell Ivar. (2005) The taxonomic identity of Sphagnum subobesum and S. andrusii, stat. et sp. nov. (sect. Subsecunda), with phytogeographical implications. Lindbergia
  Academic article

2003

• Greilhuber, J; Såstad, Sigurd Mjøen; Flatberg, Kjell Ivar. (2003) Ploidy determination in Sphagnum samples from Svalbard, Arctic Norway, by DNA image cytometry. Journal of Bryology
  Academic article
• Flatberg, Kjell Ivar; Thingsgaard, Karen. (2003) Taxonomy and Geography of Sphagnum tundrae with a Description of S. mirum, sp. nov. (Sphagnaceae, sect. Squarrosa). The Bryologist
  Academic article
• Flatberg, Kjell Ivar; Thingsgaard, Karen. (2003) Taxonomy and geography of Sphagnum tundrae with a description of S-mirum, sp nov (Sphagnaceae, sect. Squarrosa). The Bryologist
  Academic article

2002

• Thingsgaard, Karen; Flatberg, Kjell Ivar. (2002) Third international symposium on the biology of Sphagnum, Uppsala-Trondheim August 2002:excursion guide. NTNU-Vitenskapsmuseet
  Research report
• Flatberg, Kjell Ivar. (2002) The Norwegian Sphagna: a field colour guide. Norges teknisk-naturvitenskapelige universitet
  Research report
• Koksvik, Jan Ivar; Reinertsen, Helge; Arnekleiv, Jo Vegar; Flatberg, Kjell Ivar. (2002) Leirfossene kraftverk - konsekvensutredninger for vannkvalitet, begroingsforhold, plankton og fiske. Norges teknisk-naturvitenskapelige universitet
  Research report
• Söderström, Lars; Hassel, Kristian; Hassel, Kristian; Weibull, Henrik; Weibull, Henrik; Abolina, Austra; Abolina, Austra; Blom, Hans H.; Damsholt, Kell; Damsholt, Kell. (2002) Preliminary distribution maps of bryophytes in Northwestern Europe. Vol. 1 Hepaticae and Anthocerotae. Nordic Bryological Society & Mossornas Vänner
  Research report

2001

• Prestø, Tommy; Flatberg, Kjell Ivar. (2001) Moser i trua vegetasjonstyper. NTNU, Vitenskapsmuseet, Institutt for naturhistorie
  Research report
• Såstad, Sigurd Mjøen; Stenøien, Hans K.; Flatberg, Kjell Ivar; Bakken, Solveig. (2001) The narrow endemic Sphagnum troendelagicum is an allopolyploid derivative of the widespread S. balticum and S. tenellum. Systematic Botany
  Academic article

2000

• Flatberg, Kjell Ivar; Holien, Håkon. (2000) Karplantenes systematikk. Høgskolen i Nord-Trøndelag
  Research report
• Hanssen, Lillian; Såstad, Sigurd Mjøen; Flatberg, Kjell Ivar. (2000) Population structure and taxonomy of Sphagnum cuspidatum and S. viride. The Bryologist
  Academic article
• Stenøien, Hans K.; Flatberg, Kjell Ivar. (2000) Genetic variability in the rare Norwegian peat moss Sphagnum troendelagicum. The Bryologist
  Academic article
• Såstad, Sigurd Mjøen; Flatberg, Kjell Ivar; Hanssen, Lillian. (2000) Origin, taxonomy and population structure of the allopolyploid peat moss Sphagnum majus. Plant Systematics and Evolution
  Academic article
• Flatberg, Kjell Ivar; Holien, Håkon. (2000) Karplantenes systematikk. Høgskolen i Nord-Trøndelag.
  Research report
• Solli, Ida M Sagmo; Söderström, Lars; Bakken, Solveig; Flatberg, Kjell Ivar; Pedersen, Bård. (2000) Studies of fertility of Dicranum majus in two populations with different sporophyte production. Journal of Bryology
  Academic article

1999

• Flatberg, Kjell Ivar. (1999) Svalbards torvmoser (Sphagnum). Plantegeografiske og taksonomiske betraktninger. Institutt for naturhistorie, Vitenskapsmuseet, NTNU
  Working paper
• Flatberg, Kjell Ivar. (1999) Svalbards torvmoser. Slekt Sphagnum. Institutt for naturhistorie, Vitenskapsmuseet, NTNU
  Working paper
• Flatberg, Kjell Ivar. (1999) Busken pors - to merkelige forekomster i Holtålen. Holtålen historielag
  Research report
• Såstad, Sigurd Mjøen; Stenøien, Hans K.; Flatberg, Kjell Ivar. (1999) Species Delimitation and Relationships of the Sphagnum recurvum Complex (Bryophyta) - as Revealed by Isozyme and RAPD Markers. Systematic Botany
  Academic article
• Såstad, Sigurd Mjøen; Flatberg, Kjell Ivar; Cronberg, Nils. (1999) Electrophoretic evidence supporting a theory of allopolyploid origin of the peatmoss Sphagnum jensenii. Nordic Journal of Botany (NJB)
  Academic article

1998

• Flatberg, Kjell Ivar. (1998) Arboretet Ringve botaniske hage. Norges teknisk-naturvitenskapelige universitet
  Research report
• Solli, Ida M. Sagmo; Söderström, Lars; Bakken, Solveig; Flatberg, Kjell Ivar; Pedersen, Bård. (1998) Reproductive phenology of Dicranum majus in central Norway. Journal of Bryology
  Academic article
• Flatberg, Kjell Ivar; Prestø, Tommy. (1998) Excursion Guide for the 3rd European Conference on the Conservation of Bryophytes in Trondheim, Norway 31 August - 4 September 1998. NTNU, Vitenskapsmuseet, Institutt for naturhistorie
  Non-fiction monograph
• Söderström, Lars; Abolina, Austra; Blom, Hans H.; Damsholt, Kell; Enroth, Johannes; Fagersten, Reino; Flatberg, Kjell Ivar; Frisvoll, Arne A.; Haapasaari, Matti; Hassel, Kristian. (1998) Preliminary distribution maps of bryophytes in northwestern Europe. Vol. 3 Musci (J-Z). Mossornas Vänner
  Non-fiction monograph

1997

• Stenøien, Hans K.; Bakken, Solveig; Flatberg, Kjell Ivar. (1997) Phenotypic variation in the Sphagnum recurvum complex : a cultivation experiment. Journal of Bryology
  Academic article
• Framstad, Erik; Bendiksen, Egil; Flatberg, Kjell Ivar; Frisvoll, Arne A.; Holien, Håkon; Høiland, Klaus; Prestø, Tommy; Svalastog, Dag; Erikstad, Lars; Jonsson, Bror. (1997) Planter i boreal skog - effekter av økologi og skogsdrift på artsmangfoldet. Norsk institutt for naturforskning
  Research report

1996

• Söderström, Lars; Abolina, A; Blom, Hans H; Damsholt, K; Fagerstén, R; Flatberg, Kjell Ivar; Frisvoll, AA; Haapasaari, M; Hedenäs, L; Heegaard, E. (1996) Preliminary distribution maps of bryophytes in Northwestern Europe. Vol. 2 Musci (A-I). Mossornas Vänner
  Research report
• Flatberg, Kjell Ivar; Bakken, Solveig; Pedersen, Bård; Søderstrøm, Lars; Såstad, Sigurd Mjøen. (1996) Biodiversitet : populasjonsbiologiske prosesser hos moser. SMU
  Research report
• Solli, Ida M. Sagmo; Flatberg, Kjell Ivar; Søderstrøm, Lars; Bakken, Solveig; Pedersen, Bård. (1996) Blanksigd og luftforurensninger : fertilitetsstudier. Norges teknisk-naturvitenskapelige universitet
  Research report

1995

• Frisvoll, Arne Arnfinn; Elvebakk, Arve; Flatberg, Kjell Ivar; Økland, Rune H.. (1995) Sjekkliste over norske mosar. Vitskapleg og norsk namneverk. Norsk institutt for naturforskning (NINA)
  Non-fiction monograph
• Frisvoll, A.A.; Elvebakk, Arve; Flatberg, K.I.; Økland, Rune Halvorsen. (1995) Sjekkliste over norske mosar. Norsk Inst. Naturforsk.
  Research report

1994

• Såstad, Sigurd Mjøen; Flatberg, Kjell Ivar. (1994) Leaf size and shape in the Sphagnum recurvum complex: taxonomic significance and habitat variation. Journal of Bryology
  Academic article

1993

• Såstad, Sigurd Mjøen; Flatberg, Kjell Ivar. (1993) Leaf morphology of Sphagnum strictum in Norway related to habitat characteristics. Lindbergia
  Academic article

1984

• Frisvoll, A.A.; Elvebakk, Arve; Flatberg, K.I.; Halvorsen, Rune; Skogen, A.. (1984) Norske navn på moser. Polarflokken
  Academic article