| 1. |
- Kattge, Jens, et al.
(författare)
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TRY plant trait database - enhanced coverage and open access
- 2020
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Ingår i: Global Change Biology. - : Wiley-Blackwell. - 1354-1013 .- 1365-2486. ; 26:1, s. 119-188
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Tidskriftsartikel (refereegranskat)abstract
- Plant traits-the morphological, anatomical, physiological, biochemical and phenological characteristics of plants-determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait-based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits-almost complete coverage for 'plant growth form'. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait-environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives.
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| 2. |
- Margaryan, Ashot, et al.
(författare)
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Population genomics of the Viking world
- 2020
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 585:7825, s. 390-396
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Tidskriftsartikel (refereegranskat)abstract
- The maritime expansion of Scandinavian populations during the Viking Age (about ad750–1050) was a far-flung transformation in world history1,2. Here we sequenced the genomes of 442humans from archaeological sites across Europe and Greenland (to a median depth of about 1×) to understand the global influence of this expansion. We find the Viking period involved gene flow into Scandinavia from the south and east. We observe genetic structure within Scandinavia, with diversity hotspots in the south and restricted gene flow within Scandinavia. We find evidence for a major influx of Danish ancestry into England; a Swedish influx into the Baltic; and Norwegian influx into Ireland, Iceland and Greenland. Additionally, we see substantial ancestry from elsewhere in Europe entering Scandinavia during the Viking Age. Our ancient DNA analysis also revealed that a Viking expedition included close family members. By comparing with modern populations, we find that pigmentation-associated loci have undergone strong population differentiation during the past millennium, and trace positively selected loci—including the lactase-persistence allele of LCT and alleles of ANKA that are associated with the immune response—in detail. We conclude that the Viking diaspora was characterized by substantial transregional engagement: distinct populations influenced the genomic makeup of different regions of Europe, and Scandinavia experienced increased contact with the rest of the continent.
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| 3. |
- Bolin, Kristian, et al.
(författare)
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Characteristics of finasteride users in comparison with non-users: a Nordic nationwide study based on individual-level data from Denmark, Finland, and Sweden
- 2020
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Ingår i: Pharmacoepidemiology and Drug Safety. - : Wiley. - 1053-8569 .- 1099-1557. ; 29:4, s. 453-460
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: Published epidemiological studies on the association between finasterideuse and the risk of male breast cancer have been inconclusive due to methodologicallimitations including a few male breast cancer cases included. Determinants of malebreast cancer have been studied, but it remains unexplored whether these are alsorelated to finasteride use and thereby constitute potential confounders. This studyaimed to assess whether there are differences between finasteride users andnonusers with regard to numerous potential confounders.Methods: In total, 246 508 finasteride users (≥35 years) were identified in the pre-scription registries of Denmark (1995-2014), Finland (1997-2013), and Sweden(2005-2014). An equal number of nonusers were sampled. The directed acyclic graph(DAG) methodology was used to identify potential confounders for the associationbetween finasteride and male breast cancer. A logistic regression model comparedfinasteride users and nonusers with regard to potential confounders that were mea-surable in registries and population surveys.Results: Finasteride users had higher odds of testicular abnormalities (odds ratio[OR] 1.40; 95% confidence interval [CI] 1.36-1.44), obesity (1.31; 1.23-1.39), exoge-nous testosterone (1.61; 1.48-1.74), radiation exposure (1.22; 1.18-1.27), and diabe-tes (1.07; 1.04-1.10) and lower odds of occupational exposure in perfume industry orin high temperature environments (0.93; 0.87-0.99), living alone (0.89; 0.88-0.91), liv-ing in urban/suburban areas (0.97; 0.95-0.99), and physical inactivity (0.70;0.50-0.99) compared to nonusers.Conclusions: Systematic differences between finasteride users and nonusers werefound emphasizing the importance of confounder adjustment of associationsbetween finasteride and male breast cancer.
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