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Träfflista för sökning "WFRF:(Walker Logan C.) ;lar1:(umu)"

Sökning: WFRF:(Walker Logan C.) > Umeå universitet

  • Resultat 1-3 av 3
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1.
  • Myers-Smith, Isla H., et al. (författare)
  • Complexity revealed in the greening of the Arctic
  • 2020
  • Ingår i: Nature Climate Change. - : Springer Science and Business Media LLC. - 1758-678X .- 1758-6798. ; 10:2, s. 106-117
  • Tidskriftsartikel (refereegranskat)abstract
    • As the Arctic warms, vegetation is responding, and satellite measures indicate widespread greening at high latitudes. This ‘greening of the Arctic’ is among the world’s most important large-scale ecological responses to global climate change. However, a consensus is emerging that the underlying causes and future dynamics of so-called Arctic greening and browning trends are more complex, variable and inherently scale-dependent than previously thought. Here we summarize the complexities of observing and interpreting high-latitude greening to identify priorities for future research. Incorporating satellite and proximal remote sensing with in-situ data, while accounting for uncertainties and scale issues, will advance the study of past, present and future Arctic vegetation change.
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2.
  • Berner, Logan T., et al. (författare)
  • The Arctic plant aboveground biomass synthesis dataset
  • 2024
  • Ingår i: Scientific Data. - : Springer Nature. - 2052-4463. ; 11:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Plant biomass is a fundamental ecosystem attribute that is sensitive to rapid climatic changes occurring in the Arctic. Nevertheless, measuring plant biomass in the Arctic is logistically challenging and resource intensive. Lack of accessible field data hinders efforts to understand the amount, composition, distribution, and changes in plant biomass in these northern ecosystems. Here, we present The Arctic plant aboveground biomass synthesis dataset, which includes field measurements of lichen, bryophyte, herb, shrub, and/or tree aboveground biomass (g m−2) on 2,327 sample plots from 636 field sites in seven countries. We created the synthesis dataset by assembling and harmonizing 32 individual datasets. Aboveground biomass was primarily quantified by harvesting sample plots during mid- to late-summer, though tree and often tall shrub biomass were quantified using surveys and allometric models. Each biomass measurement is associated with metadata including sample date, location, method, data source, and other information. This unique dataset can be leveraged to monitor, map, and model plant biomass across the rapidly warming Arctic.
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3.
  • Walker, Logan C, et al. (författare)
  • Evidence for SMAD3 as a modifier of breast cancer risk in BRCA2 mutation carriers.
  • 2010
  • Ingår i: Breast cancer research : BCR. - : Springer Science and Business Media LLC. - 1465-542X .- 1465-5411. ; 12:6
  • Tidskriftsartikel (refereegranskat)abstract
    • Current attempts to identify genetic modifiers of BRCA1 and BRCA2 associated risk have focused on a candidate gene approach, based on knowledge of gene functions, or the development of large genome-wide association studies. In this study, we evaluated 24 SNPs tagged to 14 candidate genes derived through a novel approach that analysed gene expression differences to prioritise candidate modifier genes for association studies.
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