1. Assisted tree migration can preserve the European forest carbon sink under climate changeDebojyoti Chakraborty, Albert Ciceu, Dalibor Ballian, Marta Benito Garzón, Andreas Bolte, Gregor Božič, Rafael Buchacher, Jaroslav Čepl, Eva Cremer, Alexis Ducousso, 2024, original scientific article Abstract: Climate change threatens the role of European forests as a long-term carbon sink. Assisted migration aims to increase the resilience of forest tree populations to climate change, using species-specific climatic limits and local adaptations through transferring seed provenances. We modelled assisted migration scenarios for seven main European tree species and analysed the effects of species and seed provenance selection, accounting for environmental and genetic variations, on the annual above-ground carbon sink of regrowing juvenile forests. To increase forest resilience, coniferous trees need to be replaced by deciduous species over large parts of their distribution. If local seed provenances are used, this would result in a decrease of the current carbon sink (40 TgC yr−1) by 34–41% by 2061–2080. However, if seed provenances adapted to future climates are used, current sinks could be maintained or even increased to 48–60 TgC yr−1.
Keywords: forest resilience, forest, Europe, carbon sink, climate change, assisted migration, transferring seed provenances
Published in DiRROS: 25.07.2024; Views: 120; Downloads: 108
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2. Interakcija između efekata genetskestrukture i stanišnih uslova narast zelene duglazije u testovimaprovenijencija u Bosni i HercegoviniMirzeta Memišević Hodžić, Dalibor Ballian, Emina Šehović, 2020, original scientific article Abstract: Douglas fir (Pseudotsuga menziesii (Mirbel) Franco) is the most important and most productive species in Eu-rope, outside its natural range. This study aimed to examine the presence of interaction between the effects of the genetic structure of provenances from the United States and Canada and three localities of provenan-ce tests in Bosnia and Herzegovina.For this research, we measured diameters at breast height of all trees, and heights of 10 trees per provenance in three tests of Douglas fir at the age of plants 32 years. Four provenances are represented in all three tests and additional two provenances in two tests. We examined the variance between provenances and habitats using multivariate analysis, for four provenances in all three habitats, and six provenances in two habitats (Bo-sanska Gradiška and Zavidovići).Multivariate analysis of variance for four provenances at all three localities showed that there were no stati-stically significant differences in diameters at breast height and heights caused by the interaction of provenan-ces x localities. Multivariate analysis for six joint provenances at Bosanska Gradiška and Zavidovići tests showed that there were no statistically significant differences for diameter at breast height caused by interac-tion locality x provenance, and there were statistically significant differences caused by interactions of locality x provenances for height.The obtained results can be used for the introduction of Douglas fir on predefined habitats that correspond to the conditions of the experimental plots, as well as for the selection of the best provenances for raising clone plantations or seed plantations
Keywords: Douglas fir, provenances, interaction provenance x habitat
Published in DiRROS: 08.03.2023; Views: 562; Downloads: 258
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