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111.
Utrinek o gozdarstvu in lesarstvu nekoč
Mitja Zupančič, 2015

Ključne besede: zgodovina gozdov, gozdarstvo, Slovenija, lesarstvo
DiRROS - Objavljeno: 03.11.2021; Ogledov: 231; Prenosov: 64
.pdf Celotno besedilo (4,69 MB)

112.
Pragozd - pranarava kočevske
Tomaž Hartman, 2015

Ključne besede: znanost, raziskovanje, gozdarstvo, pragozdovi
DiRROS - Objavljeno: 03.11.2021; Ogledov: 201; Prenosov: 66
.pdf Celotno besedilo (4,69 MB)

113.
Uvodnik
Mitja Zupančič, 2015

Ključne besede: znanost, nacionalni interes, gozdarstvo, lesarstvo
DiRROS - Objavljeno: 03.11.2021; Ogledov: 201; Prenosov: 68
.pdf Celotno besedilo (4,69 MB)

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Dendrokronološke raziskave na kolišču Parte - Iščica, Ljubljansko barje, Slovenija
Tom Levanič, Katarina Čufar, Anton Velušček, 1999

Povzetek: Na Ljubljanskem Barju v Sloveniji smo opravili dendrokronološke raziskave lesa iz eneolitskega koliščarske naselbine Parte-Iščica. Iz struge reke Iščice smo odvzeli vzorce 1237 kolov iz lesa jesena (Fraxinus sp.), jelše (Alnus glutinosa Gaertn.), bukve (Fagus sylvatica L.), jelke (Abies alba Mill.), javorja (Acer sp.), breze (Betula sp.), leske (Corylus sp.), belega gabra (Carpinus betulus L.), topola (Populus sp.), hrasta (Quercus sp.), vrbe (Salixsp.) in bresta (Ulmus sp.). Prevladovali so vzorci jesena, jelše in bukve s 70 %, 9 % in 7 %. Dendrokronološke analize smo opravili na jesenovih, bukovih, hrastovih in jelovih kolih, ki so imeli nad 45 branik. Na osnovi 285 relativno datiranih vzorcev smo sestavili dve jesenovi in eno bukovo kronologijo, dolžin 136, 113 in 105 let. Večje količine lesa, posekanega v istem koledarskem letu, nakazujejo potek gradbenih aktivnosti na kolišču. Po prvih rezultatih radiokarbonskega datiranja uvrščamo koliščarsko naselbino v prvo polovico tretjega tisočletja pred našim štetjem.
Ključne besede: arheologija mokrih tal, datiranje, dendrokronologija, arheološki les, kolišča, mlajša kamena doba, bakrena doba, Ljubljansko barje, jesen (drevo), bukev, Slovenija
DiRROS - Objavljeno: 03.11.2021; Ogledov: 599; Prenosov: 389
.pdf Celotno besedilo (950,76 KB)

117.
Ocena poškodovanosti dreves z elektronsko paramagnetno resonanco Mn2+ ionov
Polona Kalan, Franc Batič, Zorka Stolič, Marjanca Nemec, Milan Valter Schara, 1998

Povzetek: Ocena poškodovanosti dreves z elektronsko paramagnetno resonanco Mn2+ ionov
Ključne besede: elektronska paramagnetna resonanca, EPR Mn2+, smreka, iglica, poškodovanost drevesa, zdravstveno stanje
DiRROS - Objavljeno: 03.11.2021; Ogledov: 256; Prenosov: 77
.pdf Celotno besedilo (565,85 KB)

118.
Umiranja jelke (Abies alba Mill.) v Sloveniji : pregled raziskav katedre za tehnologijo lesa
Katarina Čufar, 1997

Povzetek: Predstavljamo pregled raziskav Katedre za tehnologijo lesa pod vodstvom dr. Torellija o propadanju jelke (Abies alba Mill.) v Sloveniji. Raziskave v obdobju 1985-1996 so vključevale spremljanje stanja jelke s pomočjo merjenja električne upornosti (EU), anatomske in fiziološke interpretacije meritev EU, upadanje rasti in prirastka, študij fenologije, reproduktivne rasti, pojava sekundarne krošnje, ugotavljanje vlažnosti in kvalitete lesa, število sluznih celic v skorji in travmatskih smolnih kanalov v lesu ter odziv lesa in skorje na poškodovanje
Ključne besede: jelka, Abies alba, propadanje, električna upornost, anatomija lesa, anatomija skorje, rast
DiRROS - Objavljeno: 03.11.2021; Ogledov: 546; Prenosov: 375
.pdf Celotno besedilo (874,15 KB)

119.
Species interactions : next-level citizen science
Quentin Groom, Nadja Pernat, Tim Adriaens, Maarten De Groot, Sven D. Jelaska, Diana Marčiulyniene, Angeliki F. Martinou, Jiří Skuhrovec, Elena Tricarico, Ernst C. Wit, Helen E. Roy, 2021

Povzetek: We envisage a future research environment where digital data on species interactions are easily accessible and comprehensively cover all species, life stages and habitats. To achieve this goal, we need data from many sources, including the largely untapped potential of citizen science for mobilising and utilising existing information on species interactions. Traditionally volunteers contributing information on the occurrence of species have focused on single-species observations from within one target taxon. We make recommendations on how to improve the gathering of species interaction data through citizen science, which data should be collected and how it can be motivated. These recommendations include providing feedback in the form of network visualisations, leveraging a wide variety of other data sources and eliciting an emotional connection to the species in question. There are many uses for these data, but in the context of biological invasions, information on species interactions will increase understanding of the effects of invasive alien species on recipient communities and ecosystems. We believe that the inclusion of ecological networks as a concept within citizen science, not only for initiatives focussed on biological invasions but also across other ecological themes, will not only enrich scientific knowledge on species interactions but also deepen the experience and enjoyment of citizens themselves.
Ključne besede: alien species, biological invasions, citizen science
DiRROS - Objavljeno: 29.10.2021; Ogledov: 309; Prenosov: 163
.pdf Celotno besedilo (1,03 MB)

120.
Comparing environmental impacts of alien plants, insects and pathogens in protected riparian forests
Katharina Lapin, Sven Bacher, Thomas L. Cech, Rok Damjanić, Franz Essl, Freya-Isabel Georges, Gernot Hoch, Andreja Kavčič, András Koltay, Saša Kostić, Ivan Lukić, Aleksander Marinšek, Laszlo Nagy, Sonja Novak Agbaba, Janine Oettel, Saša Orlović, Leopold Poljaković-Pajnik, Marcus Sallmannshofer, Martin Steinkellner, Srdjan Stojnić, Marjana Westergren, Milica Zlatković, Anita Zolles, Maarten De Groot, 2021

Povzetek: The prioritization of alien species according to the magnitude of their environmental impacts has become increasingly important for the management of invasive alien species. In this study, we applied the Environmental Impact Classification of Alien Taxa (EICAT) to classify alien taxa from three different taxonomic groups to facilitate the prioritisation of management actions for the threatened riparian forests of the Mura-Drava-Danube Biosphere Reserve, South East Europe. With local experts we collated a list of 198 alien species (115 plants, 45 insects, and 38 fungi) with populations reported in southeast European forest ecosystems and included them in the EICAT. We found impact reports for 114 species. Eleven of these species caused local extinctions of a native species, 35 led to a population decrease, 51 to a reduction in performance in at least one native species and for 17 alien species no effects on individual fitness of native species were detected. Fungi had significantly highest impact and were more likely to have information on their impacts reported. Competition and parasitism were the most important impact mechanisms of alien species. This study is, to our knowledge, the first application of EICAT to all known alien species of several taxonomic groups in a protected area. The impact rankings enabled to identify taxa that generally cause high impacts and to prioritize species for the management in protected areas according to their impact magnitudes. By following a standardized impact protocol, we identified several alien species causing high impacts that do not appear on any expert-based risk list, which are relevant for policymakers. Thus, we recommend that alien species be systematically screened to identify knowledge gaps and prioritize their management with respect to spatio-temporal trends in impact magnitudes.
Ključne besede: alien species, biological invasions, EICAT, invasive species management, protected areas, species prioritization
DiRROS - Objavljeno: 29.10.2021; Ogledov: 260; Prenosov: 176
.pdf Celotno besedilo (1,13 MB)

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