Luke
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Jukuri

Tervetuloa käyttämään Jukuria, Luonnonvarakeskuksen (Luke) avointa julkaisuarkistoa. Jukurissa on tiedot Luken julkaisutuotannosta. Osa julkaisuista on vapaasti ladattavissa. Luken muodostaneiden tutkimuslaitosten aikaisemmasta julkaisutuotannosta osan tiedot ovat järjestelmässä jo nyt ja kattavuus paranee jatkuvasti.

Kokoelmat

Viimeksi tallennetut

  • TeknoNauta testasi teknologiaa
    Tuomisto, Leena; Pesonen, Maiju; Huuskonen, Arto
    Kunnon perhetila : 1/2026 (Snellmanin lihanjalostus, 2026)
  • Ectodysplasin-A (EDA) Signaling Cross-Talk in Skeletogenesis
    Ahi, Ehsan Pashay; Moustakas-Verho, Jacqueline; Singh, Pooja
    Calcified tissue international : 1 (Springer Nature, 2026)
    Skeletal morphogenesis is a highly complicated interaction cascade of molecular cues, with the Ectodysplasin-A (EDA) pathway emerging as a potentially important contributor to this biological process. This review focuses on the molecular complexity of the EDA pathway’s role in shaping the diverse skeletal architectures observed in vertebrate models studied to date, particularly in fish and mammals. At the molecular level, we first discuss the signaling cascades initiated by EDA and briefly explore its impact on skeletal development. Insights into the transcriptional regulation and downstream effectors activated by EDA provide a greater understanding of its influence on skeletal formation. Beyond its standalone role in skeletogenesis, the review mainly focuses on the dynamic cross-talk between the EDA pathway and other important skeletogenic/morphogenic pathways. The multi-layered interplay with signaling networks, such as BMP, Hedgehog, Wnt, and FGF, highlights the integration of this pathway into broader molecular process governing skeletal morphogenesis. The physiological role of EDA in skeletal tissues appears highly context-dependent, varying with the interacting pathway, cell type, and developmental stage. We explore instances where EDA acts as a conductor, harmonizing its effects with those of other pathways to achieve distinct outcomes in skeletal diversity, and propose a conceptual framework in which EDA integrates these inputs through shared transcriptional hubs, notably NF-κB and NFATc1, in a tissue- and stage-specific manner. By summarizing the interactions of EDA and their associated physiological roles, we provide a comprehensive perspective on the EDA-dependent molecular underpinnings of skeletal diversity, offering new and valuable insights for future research and potential applications in skeletal biology.
  • Biochar impacts on soil properties : A review focusing on Nordic research
    Hyväluoma, Jari; Tähtikarhu, Mika; Rasa, Kimmo
    Agricultural and food science : 1 (Scientific Agricultural Society of Finland, 2026)
    Biochar used as a soil amendment has been reported to influence crop productivity and the environmental impacts of agriculture. The impacts are challenging to generalize, as they depend on regional farming and climatic conditions. We collected and synthesized the scattered research findings from Fennoscandian countries to increase understanding of biochar impacts (crop yield, soil hydraulic properties, soil structural stability, and carbon storage) in high-latitude agricultural soils. The influence of biochar was generally minor, with only a few sporadic clearly positive indications. While the number of study cases was too small to draw indisputable conclusions, low-fertility soils could be potential targets for biochar in boreal conditions. Also, global meta-analyses show the greatest yield increases in coarse-textured, nutrient-poor, and acidic soils. Such agricultural soils are, however, a minority in the Fennoscandian conditions, which calls for further systematic investigations on biochar application on non-arable soils. The synthesized experimental results indicate that biochar has the potential to increase the long-term soil carbon storage. Our review highlights the scarcity of long-term investigations into the effects of biochar ageing and, consequently, soil properties. Several field experiments set up over a decade ago could provide a sound basis for research focusing on biochar ageing.
  • Effects of selection harvesting on the understorey vegetation in drained Norway spruce peatlands
    Hotanen, Juha-Pekka; Miina, Jari; Korpela, Leila; Mäkipää, Raisa
    Silva fennica : 1 (Suomen metsätieteellinen seura, 2026)
    This study focused on the changes in species abundance after harvest in uneven-aged stands. Selection harvesting was performed at four sites in southern boreal vegetation zones in Finland using two thinning intensities: post-harvest basal area (G) of 17 and 12–13 m2 ha–1. The G pre-harvest and in control plots varied between 19 and 31 m2 ha–1. Vegetation was inventoried before thinning in 2016 and 2 and 6 years after thinning in 2018 and 2022. The effect of thinning intensity was significant for grasses and sedges as groups, Betula pubescens Ehrh. (height < 50 cm), Rubus idaeus L., and Trientalis europaea L., which showed increased abundance after harvest. However, T. europaea abundance turned to decline by 2022. Several species responded to the thinning intensity, showing a greater treatment effect with the more time since harvest. The abundance of Carex globularis L., Dryopteris carthusiana (Vill.) H.P. Fuchs, Epilobium angustifolium L., Vaccinium myrtillus L., V. vitis-idaea L., Linnaea borealis L. and Brachythecium spp. increased, but that of Oxalis acetosella L. decreased. For some species, only the time since harvest was significant. The abundance of Maianthemum bifolium (L.) F.W. Schmidt, Deschampsia flexuosa (L.) Trin. and Plagiothecium spp. increased, whereas that of Sphagnum girgensohnii Russow and S. russowii Warnst. decreased. The thinning intensity did not have a significant effect on the number of species, but the number of species increased slightly on the thinned plots. The effects of logging residues, strip roads, and light availability may be the major drivers of the changes in the species abundance.
  • Effects of alkalinity-controlling chemicals on biofilter performance and sludge properties in freshwater recirculating aquaculture systems
    Qi, Wanhe; Vielma, Jouni
    Aquacultural engineering (Elsevier, 2026)
    This study aims to enrich potassium (K) content in sludge from recirculating aquaculture systems (RAS) by replacing sodium (Na)-based alkalinity-controlling chemicals with K-based derivates. Nine identical pilot-scale RAS rearing rainbow trout (Oncorhynchus mykiss) were operated for 10 weeks in triplicate treatments with K2CO3, NaHCO3, and NaOH as alkalinity-controlling chemicals. Water and sludge samples were collected weekly from the RAS for water quality and sludge property measurements. Results showed that K2CO3 significantly increased K concentrations, reaching average values of 190 mg/L in water samples and 180 mg/kg in sludge samples. These levels were 17–20 times and 14 times higher than those observed in NaHCO3 and NaOH treatments, respectively. All treatments achieved satisfactory biofilter performance (TAN < 1 mg/L and NO2--N < 0.2 mg/L), and good fish production performance (FCR=0.96–1.17, survival > 95%). Significant accumulation of Na in rearing water from NaHCO3 and NaOH treatments was observed with 133 ± 7 mg/L and 136 ± 2 mg/L at the end of experiment, respectively, which are far above phytotoxic Na threshold of 50 mg/L. In contrast, K2CO3 treatment maintained low and stable Na levels over sampling period, ranging from 4.0 ± 1.3 mg/L to 6.3 ± 0.6 mg/L. No difference observed among treatments on other sludge (TN, TP, DM, TSS and SVI30) and water (TN, TP, Ca, Mg, S, and Si) parameters. This study confirms that K2CO3 as an alkalinity-controlling chemical in RAS is a feasible and synergistic solution in unifying alkalinity adjustment and producing a K-rich fertilizer from RAS sludge, which enhances the sustainability and circularity of aquaculture production.