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.

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Viimeksi tallennetut

Improved subsurface drainage increased small grain cereal yield but not the soil carbon stock of a boreal clay soil
Lång, Kristiina; Honkanen, Henri; Kaseva, Janne; Lemola, Riitta; Uusitalo, Risto
Agricultural and food science : 1 (Scientific Agricultural Society of Finland, 2026)
Removal of excess water by soil drainage is a prerequisite of proper yields in boreal agriculture. A functioning drainage system enables farming operations, maintains yields and improves the environmental performance of a field plot. As carbon input to soils in crop residues increases with the yield, increased crop production might benefit the carbon balance of the soil. We document the effects of drainage renovation on the yield and crop residue production of spring cereals at a long-term experimental site on Protovertic luvisol in south-western Finland and discuss their relevance for soil carbon sequestration. The yield and amount of crop residues were monitored continuously before (1985–1990) and after (1992–1997) a drainage renovation. The cereal yields almost doubled, reaching the current average yields, and the amount of crop residue increased by 30% after the improvement of the drainage system. This was, however, not significantly reflected in the soil carbon stock. Drainage renovation can be considered sustainable intensification that provides long-term benefits for crop production, but carbon sequestration likely requires more carbon input than is available in the cereal straw.
Delineating seasonal shifts in reindeer habitat and diet selection by integrating GPS telemetry and stable isotope analysis
Hiltunen, Tamara A.; Kivelä, Sami M.; Kumpula, Jouko; Aspi, Jouni O.; Welker, Jeffrey M.
Wildlife biology (John Wiley & Sons, 2026)
Seasonal changes shape herbivore behaviour by altering forage availability and habitat conditions; however, few studies integrate diet and habitat selection data across temporal scales. This study uses seasonality as a unifying framework to combine fine-scale GPS-based habitat selection data with broader-scale dietary information from stable isotope analysis (δ13C, δ15N) of hairs in semi-domesticated reindeer Rangifer tarandus tarandus. Thresholds introduced within this framework detect seasonal shifts in habitat and diet selection and classify foraging strategies along a specialist–generalist continuum. Despite individual variability, most individuals exhibited pronounced seasonal changes between spring/early summer (SES) and late summer/autumn (LSA), consistent with generalist foraging strategies. Habitat selection models revealed reduced avoidance of rugged terrain and increased use of mires and bogs from SES to LSA. Concurrently, isotopic enrichment and niche expansion reflected a dietary shift from δ15N- and δ13C-depleted plants (e.g. lichens, shrubs, deciduous vegetation) to more enriched forage types such as sedges, grasses, horsetails, and mushrooms. We assessed whether individual-level shifts in diet and habitat use were linked and found an inverse correlation between the shifts in terrain ruggedness avoidance and dietary change in approximately 67% of individuals, suggesting that behavioural flexibility facilitates seasonal transitions. By integrating spatial and isotopic data, this study overcomes the limitations of single-method approaches and provides a more nuanced understanding of the seasonal foraging dynamics of a keystone Arctic and boreal ungulate. The findings highlight the plasticity of reindeer foraging within a variable environment and suggest a capacity to respond to environmental changes. This framework also offers broader applications for investigating behavioural responses and ecological strategies in other herbivores facing climate-driven habitat shifts.
Sorex isodon
Henttonen, Heikki; Stubbe, M.; Samiya, R.; Ariunbold, J.; Buuveibaatar, V.; Dorjderem, S.; Monkhzul, Ts.; Otgonbaatar, M.; Tsogbadrakh, M.; Gankhuyag, P.
The IUCN red list of threatened species (IUCN Global Species Programme Red List Unit, 2016)
Myopus schisticolor
Henttonen, Heikki
The IUCN red list of threatened species (IUCN Global Species Programme Red List Unit, 2016)
Sicista betulina
Meinig, H.; Zagorodnyuk, I.; Henttonen, Heikki; Zima, J.; Coroiu, I.
The IUCN red list of threatened species (IUCN Global Species Programme Red List Unit, 2016)