Ann Evankow

• Timdal, Einar; Evankow, Ann; Opedal, Vemund Rudlang & Fjelde, Markus Osaland (2024). Lecania lepidota, a new lichen species from pollarded Fraxinus excelsior in oceanic, old-growth deciduous forests in Norway. Graphis Scripta. ISSN 0901-7593. 36(1), s. 1–14.
• Klughammer, Johanna; Romanovskaia, Daria; Nemc, Amelie; Posautz, Annika; Seid, Charlotte A. & Schuster, Linda C. [Vis alle 27 forfattere av denne artikkelen] (2023). Comparative analysis of genome-scale, base-resolution DNA methylation profiles across 580 animal species. Nature Communications. ISSN 2041-1723. 14(1). doi: 10.1038/s41467-022-34828-y. Fulltekst i vitenarkiv Vis sammendrag

  Methylation of cytosines is a prototypic epigenetic modification of the DNA. It has been implicated in various regulatory mechanisms across the animal kingdom and particularly in vertebrates. We mapped DNA methylation in 580 animal species (535 vertebrates, 45 invertebrates), resulting in 2443 genome-scale DNA methylation profiles of multiple organs. Bioinformatic analysis of this large dataset quantified the association of DNA methylation with the underlying genomic DNA sequence throughout vertebrate evolution. We observed a broadly conserved link with two major transitions—once in the first vertebrates and again with the emergence of reptiles. Cross-species comparisons focusing on individual organs supported a deeply conserved association of DNA methylation with tissue type, and cross-mapping analysis of DNA methylation at gene promoters revealed evolutionary changes for orthologous genes. In summary, this study establishes a large resource of vertebrate and invertebrate DNA methylomes, it showcases the power of reference-free epigenome analysis in species for which no reference genomes are available, and it contributes an epigenetic perspective to the study of vertebrate evolution.

• Brinker, Samuel R.; Evankow, Ann & Timdal, Einar (2022). Rhizoplaca ouimetensis sp. nov. (Lecanoraceae) from Ontario, the first sorediate species in the genus. The Bryologist. ISSN 0007-2745. 125(4), s. 513–523. doi: 10.1639/0007-2745-125.4.513. Vis sammendrag

  Rhizoplaca ouimetensis is described new to science, growing on outcrops of diabase sills in the Lake Superior region of Ontario, Canada. It is the first known sorediate species of the genus, and a phylogenetic reconstruction based on the ITS and mtSSU markers place it in the R. chrysoleuca group. Morphologically, however, it resembles sorediate, yellow-green species of Lecanora with usnic acid, e.g., L. handelii and L. soralifera, but differs from those in forming larger, often pulvinate or minutely peltate areoles with a well-developed upper cortex and a medulla densely filled with calcium oxalate crystals.

• Speed, James David Mervyn; Evankow, Ann; Petersen, Tanja Kofod; Ranke, Peter Sjolte; Nilsen, Nellie Henriette & Turner, Grace Winifred [Vis alle 17 forfattere av denne artikkelen] (2022). A regionally coherent ecological fingerprint of climate change, evidenced from natural history collections. Ecology and Evolution. ISSN 2045-7758. 12(11). doi: 10.1002/ece3.9471. Fulltekst i vitenarkiv Vis sammendrag

  Climate change has dramatic impacts on ecological systems, affecting a range of ecological factors including phenology, species abundance, diversity, and distribution. The breadth of climate change impacts on ecological systems leads to the occurrence of fingerprints of climate change. However, climate fingerprints are usually identified across broad geographical scales and are potentially influenced by publication biases. In this study, we used natural history collections spanning over 250 years, to quantify a range of ecological responses to climate change, including phenology, abundance, diversity, and distributions, across a range of taxa, including vertebrates, invertebrates, plants, and fungi, within a single region, Central Norway. We tested the hypotheses that ecological responses to climate change are apparent and coherent at a regional scale, that longer time series show stronger trends over time and in relation to temperature, and that ecological responses change in trajectory at the same time as shifts in temperature. We identified a clear regional coherence in climate signal, with decreasing abundances of limnic zooplankton (on average by 7691 individuals m−3 °C−1) and boreal forest breeding birds (on average by 1.94 territories km−2 °C−1), and earlier plant flowering phenology (on average 2 days °C−1) for every degree of temperature increase. In contrast, regional-scale species distributions and species diversity were largely stable. Surprisingly, the effect size of ecological response did not increase with study duration, and shifts in responses did not occur at the same time as shifts in temperature. This may be as the long-term studies include both periods of warming and temperature stability, and that ecological responses lag behind warming. Our findings demonstrate a regional climate fingerprint across a long timescale. We contend that natural history collections provide a unique window on a broad spectrum of ecological responses at timescales beyond most ecological monitoring programs. Natural history collections are thus an essential source for long-term ecological research.

• Grant, Danielle; Brodnicke, Ole Bjørn; Evankow, Ann; Ferreira, André O.; Fontes, João T. & Hansen, Aslak Kappel [Vis alle 21 forfattere av denne artikkelen] (2021). The Future of DNA Barcoding: Reflections from Early Career Researchers . Diversity. ISSN 1424-2818. 13(7). doi: 10.3390/d13070313. Fulltekst i vitenarkiv Vis sammendrag

  Over the last two decades, the use of DNA barcodes has transformed our ability to identify and assess life on our planet. Both strengths and weaknesses of the method have been exemplified through thousands of peer-reviewed scientific articles. Given the novel sequencing approaches, currently capable of generating millions of reads at low cost, we reflect on the questions: What will the future bring for DNA barcoding? Will identification of species using short, standardized fragments of DNA stand the test of time? We present reflected opinions of early career biodiversity researchers in the form of a SWOT analysis and discuss answers to these questions

• Opresko, Dennis M; Bo, Marzia; Stein, David P.; Evankow, Ann; Distel, Daniel L. & Brugler, Mercer R. (2021). Description of two new genera and two new species of antipatharian corals in the family Aphanipathidae (Cnidaria: Anthozoa: Antipatharia). Zootaxa. ISSN 1175-5326. 4966(2), s. 161–174. doi: 10.11646/zootaxa.4966.2.4.
• Evankow, Ann; Christie, Hartvig C; Hancke, Kasper; Brysting, Anne K; Junge, Claudia & Fredriksen, Stein [Vis alle 7 forfattere av denne artikkelen] (2019). Genetic heterogeneity of two bioeconomically important kelp species along the Norwegian coast. Conservation Genetics. ISSN 1566-0621. 20(3), s. 615–628. doi: 10.1007/s10592-019-01162-8. Fulltekst i vitenarkiv Vis sammendrag

  Knowledge of genetic diversity among wild populations is becoming increasingly important as more species are recognized for their bioeconomic value. Industrialization of natural resources, such as kelp in the marine shallow sublittoral zone through cultivation and wild-harvesting, may lead to extensive translocation and local population decimation. Without adequate resilience in the form of genetic diversity within and across populations and given the potential introduction of deleterious alleles from translocations, such anthropogenically pressured populations may not be able to sufficiently respond to future climate and other stressors. Here we provide an assessment of the genetic heterogeneity of two bioeconomically important kelp species, Laminaria hyperborea and Saccharina latissima, across the Norwegian coastal region from South (57°N) to North (78°N), by applying microsatellite genotyping. Isolation by distance was found for both kelp species when comparing genetic distance to geographic distance. L. hyperborea clustered into four distinct genetic groups corresponding to distinct geographical ecoregions, whereas S. latissima did not show equally strong geographical structuring but separated into three geographical clusters along the Norwegian coast. No genetic differentiation was found within the Norwegian Skagerrak region, corroborating previous findings. The identified genetic clustering of both kelp species supports the retention of established management regions along the Norwegian coast and argues for the continuation of a regional focused management plan for kelp resources. Further, the results demonstrate that care should be taken to prevent translocation of kelp between ecoregions in the ongoing industrialization of kelp cultivation, to maintain a healthy coastal ecosystem and sound natural population genetic diversity.

• Craine, Evan B; Evankow, Ann; Wolfson, Katherine Bibee; Dalton, Kathryn; Swedlund, Holly & Bowen, Casey [Vis alle 7 forfattere av denne artikkelen] (2016). Physiological response of Tamarix ramosissima (Tamaricaceae) to a biological control agent. Western North American Naturalist. ISSN 1527-0904. doi: 10.3398/064.076.0310.
• Heschel, M. Shane; Evankow, Ann; Wolfson, Katherine Bibee; Carlson, Jane E. & Holsinger, Kent E. (2014). Drought Response Diversification in African Protea Species. International journal of plant sciences. ISSN 1058-5893. doi: 10.1086/675573.

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• Evankow, Ann; Malaki, Philista; Kenya, Eucharia; Echep, Forchibe & Sallema, Adelaide (2024). Women in STEM: Panel Discussion. [Internett]. Youtube.
• Evankow, Ann (2024). Lichen Systematics: A Not-So-Cryptic Addition to the Kenya-Norway Knowledge-Building Collaboration 2022-2026.
• Evankow, Ann (2023). Monitor Biodiversity and Digitize Metadata with iNaturalist.
• Evankow, Ann & Simon, Antoine (2023). Lichens of the South Pacific: ultramafic maquis to lush fern forests of New Caledonia. British Lichen Society Bulletin. ISSN 0300-4562. 133(Winter 2023), s. 53–56.
• Evankow, Ann; Bendiksby, Mika & Timdal, Einar (2023). Cryptic diversity of the lichen genus Psora in cryptogam collections .
• Evankow, Ann (2022). Lichen Hunting Blog: SO BE FREE with Bryologists in Zzyzx, California. https://lichenhunting.blogspot.com/.
• Evankow, Ann (2022). Lichen Hunting Blog: California Field Meeting with Northwest Lichenologists & CALS. https://lichenhunting.blogspot.com/.
• Evankow, Ann & Timdal, Einar (2022). Challenges & Unexpected Opportunities from constructing a Lichen DNA Barcode Database for Norway.
• Evankow, Ann & Timdal, Einar (2022). Searching for Psora in North America.
• Løken, Solveig Bua & Evankow, Ann (2021). Sopptur i Botanisk hage.
• Evankow, Ann; Bendiksby, Mika; Speed, James David Mervyn & Timdal, Einar (2021). INTEGRATIVE TAXONOMY OF THE Psoraceae.
• Evankow, Ann; Naranjo, Domenica; Huereca, Alejandro & Scharnagl, Klara (2021). Track Global Lichen Diversity with Community Science on iNaturalist.
• Evankow, Ann; Bendiksby, Mika & Timdal, Einar (2020). Integrative taxonomy of the Psoraceae (Lichenized Ascomycota).
• Evankow, Ann (2015). Genetics of Norwegian kelp forests: Microsatellites reveal the genetic diversity, differentiation, and structure of two foundation kelp species in Norway.
• Evankow, Ann; Fredriksen, Stein; Christie, Hartvig C; Junge, Claudia & Brysting, Anne Krag (2015). Genetic tools reveal diversity and structure of kelp forests in Norway.
• Evankow, Ann (2013). Kelp population genetics along a light and temperature gradient.

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