All Stories

  1. The Threespine stickleback a diverse key species for the Lake Mývatn ecosystem

    Article • Aquatic Ecology, May 2026, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  2. Weather and catchment morphology drive thermal regime variation among subarctic ponds, and possible effects on resident Arctic charr

    Article • Aquatic Ecology, March 2026, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  3. Parallel adaptation to geothermally-warmed habitats due to common structural variation and functional developmental pathways

    Article • February 2025, Cold Spring Harbor Laboratory Press

    Dr Bjarni K Kristjánsson

  4. Invertebrate diversity in groundwater‐filled lava caves is influenced by both neutral‐ and niche‐based processes

    Article • Ecology and Evolution, June 2024, Wiley

    Dr Bjarni K Kristjánsson

  5. The role of neutral and adaptive evolutionary processes on patterns of genetic diversity across small cave‐dwelling populations of Icelandic Arctic charr (Salvelinus alpinus)

    Article • Ecology and Evolution, May 2024, Wiley

    Dr Bjarni K Kristjánsson

  6. Fine scale diversity in the lava: genetic and phenotypic diversity in small populations of Arctic charr Salvelinus alpinus

    Article • BMC Ecology and Evolution, April 2024, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  7. Patterns, processes and conservation management consequences of intraspecific diversity, illustrated by fishes from recently glaciated lakes

    Article • Aquatic Conservation Marine and Freshwater Ecosystems, February 2024, Wiley

    Dr Bjarni K Kristjánsson

  8. Experimental evidence for adaptive divergence in response to a warmed habitat reveals roles for morphology, allometry and parasite resistance

    Article • Ecology and Evolution, February 2024, Wiley

    Dr Bjarni K Kristjánsson

  9. Advisory Editor profile: Bjarni K. Kristjánsson

    Article • Environmental Biology of Fishes, February 2024, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  10. Experimental evidence for adaptive divergence in response to a warmed habitat reveals roles for morphology, allometry, and parasite resistance

    Article • July 2023, Authorea, Inc.

    Dr Bjarni K Kristjánsson

  11. Genome‐phenotype‐environment associations identify signatures of selection in a panmictic population of threespine stickleback

    Article • Molecular Ecology, January 2023, Wiley

    Dr Bjarni K Kristjánsson

  12. Demographic Basis of Spatially Structured Fluctuations in a Threespine Stickleback Metapopulation

    Article • The American Naturalist, January 2023, University of Chicago Press

    Dr Bjarni K Kristjánsson

  13. Contrasting Phylogeographic Patterns of Mitochondrial and Genome-Wide Variation in the Groundwater Amphipod Crangonyx islandicus That Survived the Ice Age in Iceland

    Article • Diversity, January 2023, MDPI AG

    Dr Bjarni K Kristjánsson

  14. Geothermal stickleback populations prefer cool water despite multigenerational exposure to a warm environment

    Article • Ecology and Evolution, January 2023, Wiley

    Dr Bjarni K Kristjánsson

  15. Egg size–related traits during the first year of growth and smolting in hatchery and wild juveniles of steelhead trout Oncorhynchus mykiss

    Article • Environmental Biology of Fishes, December 2022, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  16. Testing the predictability of morphological evolution in contrasting thermal environments

    Article • Evolution, December 2022, Oxford University Press (OUP)

    Dr Bjarni K Kristjánsson

  17. A warmer environment can reduce sociability in an ectotherm

    Article • Global Change Biology, October 2022, Wiley

    Dr Bjarni K Kristjánsson

  18. What is a fish? The life and legend of David L.G. Noakes

    Article • Environmental Biology of Fishes, October 2022, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  19. Variation in egg size and offspring phenotype among and within seven Arctic charr morphs

    Article • Ecology and Evolution, October 2022, Wiley

    Dr Bjarni K Kristjánsson, Markos Tsinganis

  20. Genome-phenotype-environment associations identify signatures of selection in a panmictic population of threespine stickleback

    Article • July 2022, Wiley

    Dr Bjarni K Kristjánsson

  21. Invertebrate communities in springs across a gradient in thermal regimes

    Article • PLOS One, May 2022, PLOS

    Dr Bjarni K Kristjánsson

  22. Variation in parasite resistance of Arctic charr, Salvelinus alpinus , between and within sympatric morphs

    Article • Ecology and Evolution, September 2021, Wiley

    Dr Bjarni K Kristjánsson

  23. Re-identification of individuals from images using spot constellations: a case study in Arctic charr (Salvelinus alpinus)

    Article • Royal Society Open Science, July 2021, Royal Society Publishing

    Dr Bjarni K Kristjánsson

  24. Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus)

    Article • BMC Developmental Biology, October 2020, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  25. Seasonal variation in the invertebrate community and diet of a top fish predator in a thermally stable spring

    Article • Hydrobiologia, September 2020, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  26. Ciliate diversity in cold water spring sources in Iceland

    Article • Aquatic Microbial Ecology, June 2020, Inter-Research Science Center

    Dr Bjarni K Kristjánsson

  27. Recreational scuba diving in a groundwater ecosystem: Disturbance mechanisms, ecological impacts and stakeholder perceptions

    Article • Aquatic Conservation Marine and Freshwater Ecosystems, March 2020, Wiley

    Dr Bjarni K Kristjánsson

  28. Multigenerational exposure to elevated temperatures leads to a reduction in standard metabolic rate in the wild

    Article • Functional Ecology, February 2020, Wiley

    Dr Bjarni K Kristjánsson

  29. Repeatability of Adaptive Radiation Depends on Spatial Scale: Regional Versus Global Replicates of Stickleback in Lake Versus Stream Habitats

    Article • Journal of Heredity, November 2019, Oxford University Press (OUP)

    Dr Bjarni K Kristjánsson

  30. Bacterial diversity in Icelandic cold spring sources and in relation to the groundwater amphipod Crangonyx islandicus

    Article • PLOS One, October 2019, PLOS

    Dr Bjarni K Kristjánsson

  31. Reduction in standard metabolic rate after multigenerational exposure to elevated temperatures in the wild

    Article • August 2019, Cold Spring Harbor Laboratory Press

    Dr Bjarni K Kristjánsson

  32. Drift versus selection as drivers of phenotypic divergence at small spatial scales: The case of Belgjarskógur threespine stickleback

    Article • Ecology and Evolution, June 2019, Wiley

    Dr Bjarni K Kristjánsson

  33. A way forward with eco evo devo: an extended theory of resource polymorphism with postglacial fishes as model systems

    Article • Biological Reviews, June 2019, Wiley

    Dr Bjarni K Kristjánsson

  34. Invertebrate biodiversity in cold groundwater fissures in Iceland

    Article • Ecology and Evolution, May 2019, Wiley

    Dr Bjarni K Kristjánsson

  35. Temperature preference does not evolve in sticklebacks despite multigenerational exposure to elevated temperatures

    Article • April 2019, Cold Spring Harbor Laboratory Press

    Dr Bjarni K Kristjánsson

  36. Testing the predictability of morphological evolution in naturally warmed stickleback populations

    Article • April 2019, Cold Spring Harbor Laboratory Press

    Dr Bjarni K Kristjánsson

  37. Repeatability of adaptive radiation depends on spatial scale: regional versus global replicates of stickleback in lake versus stream habitats

    Article • February 2019, Cold Spring Harbor Laboratory Press

    Dr Bjarni K Kristjánsson

  38. Gene expression in the phenotypically plastic Arctic charr (Salvelinus alpinus): A focus on growth and ossification at early stages of development

    Article • Evolution & Development, November 2018, Wiley

    Dr Bjarni K Kristjánsson

  39. Diver-operated manual suction pump sampler: a reliable method for sampling benthos on rock substrates

    Article • Aquatic Biology, September 2018, Inter-Research Science Center

    Dr Bjarni K Kristjánsson

  40. Chironomidae fauna of springs in Iceland – assessing the ecological relevance behind Tuxen’s spring classification

    Article • Journal of Limnology, May 2018, PAGEPress Publications

    Dr Bjarni K Kristjánsson

  41. Differential gene expression during early development in recently evolved and sympatric Arctic charr morphs

    Article • PeerJ, February 2018, PeerJ

    Dr Bjarni K Kristjánsson

  42. Variation in the magnitude of morphological and dietary differences between individuals among populations of small benthic Arctic charr in relation to ecological factors

    Article • Ecology and Evolution, January 2018, Wiley

    Dr Bjarni K Kristjánsson

  43. Spring type influences invertebrate communities at cold spring sources

    Article • Hydrobiologia, November 2017, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  44. Differential gene expression during early development in recently evolved and sympatric Arctic charr morphs

    Article • October 2017, PeerJ

    Dr Bjarni K Kristjánsson

  45. Differential gene expression during early development in recently evolved and sympatric Arctic charr morphs

    Article • October 2017, PeerJ

    Dr Bjarni K Kristjánsson

  46. Phenotypic plasticity in the morphology of small benthic Icelandic Arctic charr (Salvelinus alpinus )

    Article • Ecology Of Freshwater Fish, September 2017, Wiley

    Dr Bjarni K Kristjánsson

  47. Genetic analysis of ciliates living on the groundwater amphipod Crangonyx islandicus (Amphipoda: Crangonyctidae)

    Article • Acta Zoologica, June 2017, Wiley

    Dr Bjarni K Kristjánsson

  48. The developmental transcriptome of contrasting Arctic charr (Salvelinus alpinus) morphs

    Article • F1000Research, December 2016, Faculty of 1000, Ltd.

    Dr Bjarni K Kristjánsson

  49. Divergence of gastropod life history in contrasting thermal environments in a geothermal lake

    Article • Journal of Evolutionary Biology, July 2016, Wiley

    Professor Anssi Laurila, Dr Bjarni K Kristjánsson

  50. Ecosystem size matters: the dimensionality of intralacustrine diversification in Icelandic stickleback is predicted by lake size

    Article • Ecology and Evolution, June 2016, Wiley

    Dr Bjarni K Kristjánsson

  51. The developmental transcriptome of contrasting Arctic charr (Salvelinus alpinus) morphs

    Article • F1000Research, April 2016, Faculty of 1000, Ltd.

    Dr Bjarni K Kristjánsson

  52. Bones in motion: Ontogeny of craniofacial development in sympatric arctic charr morphs

    Article • Developmental Dynamics, August 2015, Wiley

    Dr Bjarni K Kristjánsson

  53. The Origin and Significance of Reproductive Isolation for Processes of Divergence

    Article • July 2015, Taylor & Francis

    Dr Bjarni K Kristjánsson

  54. The developmental transcriptome of contrasting Arctic charr (Salvelinus alpinus) morphs

    Article • F1000Research, June 2015, Faculty of 1000, Ltd.

    Dr Bjarni K Kristjánsson, Dr Sigurður S Snorrason

  55. The developmental transcriptome of contrasting Arctic charr (Salvelinus alpinus) morphs

    Article • November 2014, Cold Spring Harbor Laboratory Press

    Dr Bjarni K Kristjánsson

  56. The importance of egg size and egg energy density for early size patterns and performance of Arctic charrSalvelinus alpinus

    Article • Aquaculture Research, September 2014, Wiley

    Dr Bjarni K Kristjánsson

  57. Divergence in social foraging among morphs of the three-spined stickleback,Gasterosteus aculeatus

    Article • Biological Journal of the Linnean Society, July 2014, Oxford University Press (OUP)

    Dr Guðbjörg Ásta Ólafsdóttir, Dr Kit Magellan, Dr Bjarni K Kristjánsson

  58. AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod

    Article • PLOS One, July 2014, PLOS

    Dr Bjarni K Kristjánsson

  59. Quick divergence but slow convergence during ecotype formation in lake and stream stickleback pairs of variable age

    Article • Journal of Evolutionary Biology, June 2014, Oxford University Press (OUP)

    Dr Bjarni K Kristjánsson

  60. Spatial phenotypic and genetic structure of threespine stickleback (Gasterosteus aculeatus) in a heterogeneous natural system, Lake Mývatn, Iceland

    Article • Ecology and Evolution, August 2013, Wiley

    Dr Bjarni K Kristjánsson

  61. Water temperature, not fish morph, determines parasite infections of sympatric Icelandic threespine sticklebacks (Gasterosteus aculeatus)

    Article • Ecology and Evolution, April 2013, Wiley

    Dr Bjarni K Kristjánsson

  62. Variability in the functional role of Arctic charr Salvelinus alpinus as it relates to lake ecosystem characteristics

    Article • Environmental Biology of Fishes, February 2013, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  63. Connectivity in a pond system influences migration and genetic structure in threespine stickleback

    Article • Ecology and Evolution, January 2013, Wiley

    Dr Bjarni K Kristjánsson

  64. Fine‐scale parallel patterns in diversity of small benthic Arctic charr (Salvelinus alpinus) in relation to the ecology of lava/groundwater habitats

    Article • Ecology and Evolution, April 2012, Wiley

    Dr Bjarni K Kristjánsson

  65. Extreme Sexual Brain Size Dimorphism in Sticklebacks: A Consequence of the Cognitive Challenges of Sex and Parenting?

    Article • PLOS One, January 2012, PLOS

    Dr Bjarni K Kristjánsson, Dr Alexander Kotrschal

  66. Universal scaling rules predict evolutionary patterns of myogenesis in species with indeterminate growth

    Article • Proceedings of the Royal Society B Biological Sciences, January 2012, Royal Society Publishing

    Dr Bjarni K Kristjánsson

  67. Corrigendum to “Molecular taxonomy and phylogenetic affinities of two groundwater amphipods, Crangonyx islandicus and Crymostygius thingvallensis, endemic to Iceland” [Mol. Phylogenet. Evol. 58 (2011) 527–539]

    Article • Molecular Phylogenetics and Evolution, January 2012, Elsevier

    Dr Bjarni K Kristjánsson

  68. INDEPENDENT AXES OF GENETIC VARIATION AND PARALLEL EVOLUTIONARY DIVERGENCE OF OPERCLE BONE SHAPE IN THREESPINE STICKLEBACK

    Article • Evolution, September 2011, Wiley

    Dr Bjarni K Kristjánsson

  69. Relationships between lake ecology and morphological characters in Icelandic Arctic charr, Salvelinus alpinus

    Article • Biological Journal of the Linnean Society, July 2011, Oxford University Press (OUP)

    Dr Bjarni K Kristjánsson

  70. The parallel evolution of dwarfism in Arctic charr is accompanied by adaptive divergence in mTOR-pathway gene expression

    Article • Molecular Ecology, June 2011, Wiley

    Dr Bjarni K Kristjánsson

  71. The Importance of Egg Size and Social Effects for Behaviour of Arctic Charr Juveniles

    Article • Ethology, June 2011, Wiley

    Dr Bjarni K Kristjánsson

  72. Molecular taxonomy and phylogenetic affinities of two groundwater amphipods, Crangonyx islandicus and Crymostygius thingvallensis, endemic to Iceland

    Article • Molecular Phylogenetics and Evolution, March 2011, Elsevier

    Dr Bjarni K Kristjánsson

  73. Evolution of adaptive diversity and genetic connectivity in Arctic charr (Salvelinus alpinus) in Iceland

    Article • Heredity, January 2011, Springer Science + Business Media

    Dr Guðbjörg Ásta Ólafsdóttir, Dr Bjarni K Kristjánsson

  74. Molecular evidence of the survival of subterranean amphipods (Arthropoda) during Ice Age underneath glaciers in Iceland

    Article • Molecular Ecology, May 2010, Wiley

    Dr Bjarni K Kristjánsson

  75. Salmonid genomes have a remarkably expanded akirin family, coexpressed with genes from conserved pathways governing skeletal muscle growth and catabolism

    Article • Physiological Genomics, April 2010, American Physiological Society

    Dr Bjarni K Kristjánsson

  76. Morphological segregation of Icelandic threespine stickleback (Gasterosteus aculeatus L).

    Article • Biological Journal of the Linnean Society, June 2008, Oxford University Press (OUP)

    Dr Bjarni K Kristjánsson

  77. Subglacial Refugia in Iceland Enabled Groundwater Amphipods to Survive Glaciations

    Article • The American Naturalist, August 2007, University of Chicago Press

    Dr Bjarni K Kristjánsson

  78. Characterisation and expression of the paired box protein 7 (Pax7) gene in polymorphic Arctic charr (Salvelinus alpinus)

    Article • Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology, November 2006, Elsevier

    Dr Bjarni K Kristjánsson

  79. Rapid Morphological Changes in Threespine Stickleback, Gasterosteus aculeatus, in Freshwater

    Article • Environmental Biology of Fishes, November 2005, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  80. Parallel Evolution, not Always so Parallel: Comparison of Small Benthic Charr, Salvelinus alpinus, from Grímsnes and Thingvallavatn, Iceland

    Article • Environmental Biology of Fishes, October 2005, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  81. Unusual number of pectoral fin rays in an Icelandic population of threespine stickleback (Gasterosteus aculeatus) recently isolated in freshwater

    Article • Evolutionary Ecology, July 2005, Springer Science + Business Media

    Dr Bjarni K Kristjánsson

  82. Rapid evolution of muscle fibre number in post-glacial populations of Arctic charr Salvelinus alpinus

    Article • Journal of Experimental Biology, December 2004, The Company of Biologists

    Dr Bjarni K Kristjánsson

  83. Crymostygidae, a new family of subterranean freshwater gammaridean amphipods (Crustacea) recorded from subarctic Europe

    Article • Journal of Natural History, August 2004, Taylor & Francis

    Dr Bjarni K Kristjánsson

  84. Morphological segregation of Icelandic threespine stickleback (Gasterosteus aculeatus L).

    Article • Biological Journal of the Linnean Society, June 2002, Oxford University Press (OUP)

    Dr Bjarni K Kristjánsson

  85. Diet of Juvenile Lumpsucker Cyclopterus lumpus (Cyclopteridae) in Floating Seaweed: Effects of Ontogeny and Prey Availability

    Article • Copeia, May 2002, American Society of Ichthyologists and Herpetologists (ASIH)

    Dr Bjarni K Kristjánsson