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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.

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Viimeksi tallennetut

  • Consumer heterogeneity and willingness to pay for common reed insulation board : a choice experiment approach
    Häyrinen, Liina; Tienhaara, Annika; Pouta, Eija
    Cleaner and responsible consumption (Elsevier, 2026)
    The growing demand for sustainable construction materials and the need to restore marginal lands have created opportunities for innovative bio-based solutions. Common reed (Phragmites australis) offers both ecological benefits and potential as a renewable insulation material, particularly when cultivated on underutilised land. However, the commercial success of such novel materials depends on consumer acceptance and willingness to pay. This study examines consumer preferences and willingness to pay for insulation boards made from common reed using a discrete choice experiment conducted in Finland in 2024 (N = 2974). Respondents evaluated four insulation boards, namely cellulose wool, stone wool, wood fibre and reed fibre, based on five attributes: thermal insulation, domestic origin, fire safety, environmental friendliness and price. A latent class model identified five consumer segments. One segment (10.7%) displayed a clear preference for reed fibre boards, valuing thermal insulation and environmental benefits while being the least price-sensitive, suggesting higher stated valuation for the material. A younger age, female gender, a background in construction and positive views on the utilisation of marginal lands increased the likelihood of segment membership. While excellent thermal insulation and domestic origin were important across all groups, their relative importance varied. The findings highlight that a distinct group of consumers has a clear preference for reed fibre insulation, especially if marketed with a focus on sustainability and renewability. The study underscores the importance of targeted communication and policy support to facilitate the adoption of novel bio-based construction materials.
  • Suonpohjien ilmastoystävällinen hyödyntäminen : ArvoHiili-hankkeen koontiraportti
    Maanavilja, Liisa; Laakso, Tero; Aro, Lasse; Hassan, Md. Kamrul; Jylhä, Paula; Miettinen, Mirella; Kuittinen, Suvi; Turunen, Jukka; Lauhanen, Risto; Ikkala, Lauri; Wall, Antti; Luokkakallio, Jari; Lind, Jenni; Iivari, Elina; Pappinen, Ari; Pölönen, Ismo
    GTK:n työraportti : 37/2026 (Geologian tutkimuskeskus, 2026)
  • Climate change impacts on fish in the Baltic Sea
    Östman, Örjan; Kallasvuo, Meri; Kuningas, Sanna; Lappalainen, Antti; Mustamäki, Noora; Naddafi, Rahmat; Saks, Lauri; Olsson, Jens
    Journal of fish biology (John Wiley & Sons, 2026)
    The Baltic Sea is a marginal sea with strong abiotic gradients harbouring fish of both marine and freshwater origin. Here we review the empirical evidence for how changes in climate variables have impacted different fish and fish communities in the Baltic Sea. Studies on responses to temperature, salinity and hypoxia dominate the literature, with most evidence for negative influences on reproduction and feeding areas for demersal fish of marine origin. In contrast, warmer waters benefit the reproduction and growth of some smaller pelagic and many coastal fish species of freshwater origin, but responses on population or community levels are elusive. Several responses to climate change have further been mediated through changes in prey abundance and quality. Studies investigating adaptations to climate change indicate that fish are adapting, partly counteracting climate impact. A precautionary approach to management is therefore important to safeguard climate change adaptation and reduce deleterious impacts as the impact on the Baltic Sea from a changing climate likely will be even more pronounced in the coming decades.
  • Different Ferromanganese Concretion Morphologies Host Distinct Microbial Communities and Metal Accumulation Patterns in the Baltic Sea
    Majamäki, Renata; Wasiljeff, Joonas; Purkamo, Lotta; Hultman, Jenni; Kohl, Lukas; Asmala, Eero; Yli‐Hemminki, Pirjo; Jørgensen, Kirsten S.; Muurinen, Johanna; Virtasalo, Joonas J.
    Environmental microbiology : 7 (Wiley-Blackwell, 2026)
    Ferromanganese (Fe-Mn) concretions are porous accumulations of iron and manganese (hydr)oxides. While recent studies suggest that microbes contribute to metal accumulation in Baltic Sea concretions, the detailed composition of microbial communities and their impact on metal enrichment across different concretion morphotypes remain unexplored. We investigated how microbes influence the accumulation and release of trace metals and rare-earth elements in Fe-Mn concretions from the Gulf of Finland through 15-week microcosm incubation experiments with biotic and abiotic treatments, focusing on three main concretion morphotypes: crust, discoidal, and spheroidal. Elemental analysis showed that microbes enhanced metal incorporation in discoidal and spheroidal morphotypes. Characterisation of microbial composition revealed that all three morphologies host distinct communities. Discoidal and spheroidal morphotypes had a higher relative abundance of Gammaproteobacteria and sulfate-reducing bacteria, and a lower abundance of Entotheonellaeota, compared to crusts. In all morphotypes, the bacterial phylum Pseudomonadota dominated, with several genera of Fe- and Mn-oxidisers and reducers. Fe-Mn concretions also host communities involved in methane oxidation and nitrogen cycling, consistent with decreased methane and increased nitrous oxide, nitrite, and nitrate concentrations in the microcosms. Our findings underscore that distinct microbial communities are associated with different concretion morphotypes, potentially influencing nutrient and metal cycling on the seafloor.
  • Environmental variation structures northern peatland soil microbiome composition and function in a reindeer herding area exclosure experiment
    Välikangas, Tommi; Fritze, Hannu; Pitkänen, Juha-Matti; Peltoniemi, Krista; Järvi-Laturi, Eeva; Christensen, Torben R; Väisänen, Maria; Lämsä, Juho; Paavola, Riku; Hultman, Jenni
    Fems microbiology ecology : 8 (Oxford University Press, 2026)
    Northern peatlands store large carbon stocks but are sensitive to disturbance. Hydrology, vegetation, herbivory and snow conditions may affect soil microorganisms involved in methane (CH4) cycling and nitrous oxide (N2O) production/reduction. We investigated how reindeer exclusion and snow depth (increased and reduced relative to ambient) manipulations (ongoing for three seasons) influenced archaeal and bacterial communities in a boreal rich fen. Metagenomic (MG) and metatranscriptomic (MT) sequencing were combined with pore-water chemistry and CH4 flux measurements to link the microbiome to ecosystem processes. Microbial communities differed between outside and inside the exclosure. However, these patterns primarily reflected underlying hydrological variation. Slightly wetter inside plots showed higher expression of denitrification genes (norB and nosZ) and lower (nirS+nirK)/nosZ ratios, indicating greater potential for complete denitrification to N2 instead of N2O. Methane dynamics were mainly associated with vegetation: plots associated with Carex rostrata exhibited lower pmoA/mcrA ratios and elevated CH4 fluxes. Snow manipulations had subtle effects: reduced snow depth decreased the expression of taxa dependent on microbial interactions, while effect to the investigated metabolic marker genes was small. Overall hydrology, leading to variations in redox conditions and nutrient availability, together with vegetation appeared as the primary drivers on microbial greenhouse gas (GHG) processes in this peatland.