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1953. A single-tree approach to determine climate-growth patterns of European beech and their seasonality in the species southern distribution areaRoberto Serrano-Notivoli, Jernej Jevšenak, Katarina Čufar, Nina Škrk Dolar, Angela Balzano, Jožica Gričar, Maks Merela, Klemen Novak, Peter Prislan, Martin De Luis, 2025, original scientific article Abstract: Dry and warm climate conditions in southern Europe represent clear limits for European beech (Fagus sylvatica) growth near the species southern distribution limit, but it is unclear how aridification and changes in seasonal precipitation regimes will affect these forests at the individual level. We explored climate-growth relationships and the seasonality of peak climate signals in European beech using daily climate data and a large collection of tree-ring width series from southern and southeastern Europe through Generalised Linear Mixed Models (GLMMs). In most cases we found a positive and significant influence of precipitation on tree growth, and a significant negative effect of maximum temperature. Predictions from the GLMMs revealed a positive impact of precipitation during an 88 day window from spring to early summer (mid-April to mid-July), for an average tree across our network. This critical growing time window ranged from 75 days in warmer and drier conditions, and extended up to 100 days in areas with mild temperatures and moderate summer precipitation. Maximum temperatures negatively affected trees for an average of 27 day window in summer (June-July). This period was reduced to <10 days in locations with wetter and colder summers, rising up to 45 days in sites with drier and warmer summers. The positive effect of precipitation on growth was stronger and commenced earlier in larger trees. Similarly, the negative effects of maximum temperatures were more pronounced for larger trees. The use of daily climate data and a tree-centred approach allowed for capturing critical temporal dynamics in climate-growth relationships that are often overlooked by conventional methods. These insights significantly enhance our understanding of climatic factors influencing individual beech growth at the edge of its distribution range and their seasonal variations.
Keywords: European beech, daily climatic variables, precipitation, maximum temperature, tree-ring width, range limit
Published in DiRROS: 06.06.2025; Views: 552; Downloads: 264
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1954. Spatially explicit individual-based model reveals the mauve stinger jellyfish distribution in the Mediterranean SeaMartin Vodopivec, Alenka Malej, 2025, original scientific article Abstract: The mauve stinger Pelagia noctiluca is a holoplanktonic oceanic jellyfish known for its painful sting and large outbreaks at irregular intervals. As jellyfish field observations are almost exclusively limited to coastal regions, there are many unknowns about the spatial and temporal dynamics of most species. We approach the problem using a spatially explicit individual-based model for the mauve stinger in the Mediterranean Sea. The newly developed module for the OpenDrift Lagrangian particle tracking tool includes diel vertical migrations, fooddependent growth modeled on Michaelis–Menten kinetics, and custom mortality related to shallow waters and stranding. In the first part of the study, we analyze the resulting parameter space searching for solutions that ensure a stable Pelagia noctilucapopulation in the western Mediterranean Sea. In the second part, we conducted several 21-year simulations. Despite its relative simplicity, the model reveals for the first time the dynamic spatio-temporal distribution of Pelagia noctiluca. We demonstrate how spatially explicit individual-based model can be used to generate a realistic spatio-temporal distribution of marine zooplankton, even with a limited set of observations and loosely constrained parameters. The model code is easy to modify and freely available.
Keywords: individual-based model, agent-based model, zooplankton, Lagrangian particle tracking, ocean circulation, jellyfish
Published in DiRROS: 05.06.2025; Views: 787; Downloads: 433
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1955. Mehanske lastnosti lepljenih spojev : vpliv izpostavljenosti in naravnega staranjaMartin Capuder, Boris Azinović, Andreja Pondelak, Tomaž Pazlar, Jaka Gašper Pečnik, Luka Naumovski, 2025, published scientific conference contribution abstract Keywords: bukev, lepljen spoj, FTIR, naravna izpostavitev, mehanske lastnosti lesa
Published in DiRROS: 05.06.2025; Views: 549; Downloads: 220
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1956. BArCH-Wood : spremljanje občutljivosti arheološkega lesa na spremembe tal zaradi podnebnih vplivovNejc Golob, Igor Srnel Purič, Ambrož Rupnik, Alen Iršič, Jan Matoh, Adam Modic, Nina Bratušek, Zvonka Janežič, Agni Prijatelj, Marko Zupan, Špela Pok, Meta Pivk, 2025, published scientific conference contribution abstract Keywords: lastnosti lesa, arheološki les, pedologija, podnebni vplivi
Published in DiRROS: 05.06.2025; Views: 585; Downloads: 236
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1959. Naslavljanje podnebnih izzivov preko valorizacije lesa poškodovanega v ujmah v Alpsko-Jadranski regijiEli Keržič, Boštjan Lesar, Jožica Gričar, Polona Hafner, Bernard Likar, Elisa Beltramini, Carlo Piemonto, Stefania Silvestri, Miha Humar, 2025, published scientific conference contribution abstract Keywords: podnebne spremembe, poškodovan les, trajnostno gospodarjenje z gozdovi, inovativna raba lesa
Published in DiRROS: 05.06.2025; Views: 522; Downloads: 257
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1960. Avtomatizacija pelodne analize slovenskega medu z uporabo umetne inteligenceLana Nastja Anžur, Martin Jurkovič, Adrian Mladenić Grobelnik, Jaka Godejša, Živa Alif, Miha Humar, Ivan Bratko, 2025, published scientific conference contribution abstract Keywords: pelodna analiza, umetna inteligenca, slovenski med, melisopalinologija
Published in DiRROS: 05.06.2025; Views: 540; Downloads: 0 |
