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102. Forest managers’ perspectives on environmental changes in the biosphere reserve Mura-Drava-DanubeMarcus Sallmannshofer, Rok Damjanić, Harald Vacik, Marjana Westergren, Tjaša Baloh, Gregor Božič, Mladen Ivanković, Gyula Kovács, Miran Lanšćak, Katharina Lapin, Laszlo Nagy, Silvija Krajter Ostoić, Saša Orlović, Srđan Stojnić, Peter Železnik, Milica Zlatković, Silvio Schueler, 2023, original scientific article Abstract: Riparian forests are particularly vulnerable to environmental change and anthropogenic influences because they are highly dynamic ecosystems, thus proper adaptation measures are crucial. The implementation of these measures, however, strongly depends on the actors’ perceptions of the specific problems occurring in such forests. For understanding the constraints of specific interest groups toward different adaptation activities, information in this field is essential. By conducting a questionnaire survey we explore how different types of forest managers, i.e., forestry professionals, forest owners, and conservation managers, perceive the effects of environmental change on forest management in the recently established Transboundary Biosphere Reserve Mura-Drava-Danube. We show that these forest managers are highly aware of ongoing environmental changes and appraise deteriorating forest conditions, especially after observing changes themselves. Abiotic damage is expected to increase the most, followed by biotic damage, the spread of non-native species, and tree dieback. Nearly 80% of the survey respondents expect further changes and almost all of them intend to adapt their management of forests to mitigate or prepare for these changes. Nevertheless, we show differences in sensitivity to change and willingness to initiate adaptation actions by assessing adaptation thresholds: conservation managers appear generally more tolerant to changes, which results in higher thresholds to initiate management adaptation than forestry professionals
Keywords: biosphere reserve Mura-Drava-Danube, forest management, sensitivity to environmental change, stakeholder perception, adaptation thresholds, riparian forest tree species
Published in DiRROS: 31.05.2023; Views: 404; Downloads: 309
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103. Model updating concept using bridge Weigh-in-Motion dataDoron Hekič, Andrej Anžlin, Maja Kreslin, Aleš Žnidarič, Peter Češarek, 2023, original scientific article Abstract: Finite element (FE) model updating of bridges is based on the measured modal parameters and less frequently on the measured structural response under a known load. Until recently, the FE model updating did not consider strain measurements from sensors installed for weighing vehicles with bridge weigh-in-motion (B-WIM) systems. A 50-year-old multi-span concrete highway viaduct, renovated between 2017 and 2019, was equipped with continuous monitoring system with over 200 sensors, and a B-WIM system. In the most heavily instrumented span, the maximum measured longitudinal strains induced by the full-speed calibration vehicle passages were compared with the modelled strains. Based on the sensitivity study results, three variables that affected its overall stiffness were updated: Young’s modulus adjustment factor of all structural elements, and two anchorage reduction factors that considered the interaction between the superstructure and non-structural elements. The analysis confirmed the importance of the initial manual FE model updating to correctly reflect the non-structural elements during the automatic nonlinear optimisation. It also demonstrated a successful use of pseudo-static B-WIM loading data during the model updating process and the potential to extend the proposed approach to using random B-WIM-weighed vehicles for FE model updating and long-term monitoring of structural parameters and load-dependent phenomena.
Keywords: monitoring, bridge, viaduct, bridge weigh-in-motion (B-WIM), structural health monitoring (SHM), finite element (FE), calibration, model updating
Published in DiRROS: 29.05.2023; Views: 456; Downloads: 233
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105. Značilnosti rastlinstva, živalstva in gozdnih sestojev v povodju Liščaka v južnih Julijskih AlpahPeter Razpet, Karin Rutar, Erik Kragelj, Igor Dakskobler, 2023, original scientific article Abstract: Članek vsebuje opis značilnosti rastlinstva in živalstva odmaknjene, le po stezah dostopne in skoraj povsem gozdnate grape v zahodni Sloveniji. Raznolikost gozdnih združb in sestojev je povezana z naravnimi značilnostmi, karbonatno-silikatno geološko podlago in velikimi strminami, a tudi s pozno poselitvijo in popolnim izumrtjem zaselkov pred petdesetimi leti in več. Bukovi sestoji, ki so jih nekoč zelo sekali, se že dolgo razvijajo po naravnih zakonitostih, nanje koreniteje vplivajo predvsem vetrolomi in žled. Pionirska grmišča in gozdovi so raznoliki po zgradbi in vrstni sestavi. V bližini nekdanjih bivališč so mogočna stara drevesa, gorski bresti, veliki jeseni in smreke, na nekdanjih njivah nastaja orehov gozd. Grapa je naravna vrednota; predlagamo, naj bi bilo celotno njeno povodje.
Keywords: rastlinstvo, živalstvo, drugotna sukcesija, gozdna krajina, Baška dolina, Slovenija
Published in DiRROS: 19.05.2023; Views: 412; Downloads: 111
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109. Distinct conformational changes occur within the intrinsically unstructured pro-domain of pro-Nerve Growth Factor in the presence of ATP and ▫$Mg ^ {2+}$▫Francesca Paoletti, Sonia Covaceuszach, Alberto Cassetta, Antonio N. Calabrese, Urban Novak, Peter Konarev, Jože Grdadolnik, Doriano Lamba, Simona Golič Grdadolnik, 2023, original scientific article Published in DiRROS: 21.03.2023; Views: 505; Downloads: 182
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110. G-quadruplex binding of an NIR emitting osmium polypyridyl probe revealed by solution NMR and time-resolved infrared studiesKateřina Peterková, Mark Stitch, Rayhaan Z. Boota, Paul A. Scattergood, Paul Elliott, Michael Towrie, Peter Podbevšek, Janez Plavec, Susan J. Quinn, 2023, original scientific article Published in DiRROS: 06.03.2023; Views: 369; Downloads: 223
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