41. Predlogi za pravno ureditev področja upravljanja s smrekovimi podlubnikiNikica Ogris, Andreja Kavčič, Marija Kolšek, Maarten De Groot, 2021, elaborat, predštudija, študija Ključne besede: Ips typographus, pravilnik o varstvu gozdov, osmerozobi smrekov lubadar, pasti, skladišča gozdnih lesnih sortimentov, monitoring, zatiranje, optimizacija Objavljeno v DiRROS: 29.06.2021; Ogledov: 847; Prenosov: 0 |
42. Green space area and type affect bird communities in a South-eastern European cityMaarten De Groot, Katarina Flajšman, Tomaž Mihelič, Urša Vilhar, Primož Simončič, Andrej Verlič, 2021, izvirni znanstveni članek Povzetek: Urbanization decreases the species richness and results in the homogenization of bird communities. Bird species are important indicator species for biodiversity and reflect the habitat quality of urban forests and other green spaces. In this study we investigated the key drivers that influence bird communities in urban forests and green spaces in the Southeastern European city of Ljubljana, Slovenia. We were interested in how the number of species, species dissimilarity and indicator species are affected by the type of green space (urban forest vs park), area of green space and type of urbanization (urban vs peri-urban areas). We sampled birds twice in 2012 in 39 standardized point counts across Ljubljana. We found that the abundance was influenced by the area of the green space. Species dissimilarity and species turnover are affected by the area and type of green space. Interestingly, the analysis showed that the species composition of peri-urban areas was similar to that of urban areas. Indicator species were found for all environmental variables. On the basis of the results, we suggest the strategy that would increase the diversity of birds and increase the stability of their populations in urban areas. Urban planners should encourage 1) both forests and parks since they harbour different species of birds, 2) larger green spaces since larger areas have species that are more typical of larger areas and 3) a mosaic of a larger number of smaller forest remnants combined with larger forest complex serving as source areas. Ključne besede: urban forest, bird species composition, forest remnant, urbanization, peri-urban forest, bird monitoring, species richness Objavljeno v DiRROS: 14.06.2021; Ogledov: 1164; Prenosov: 538 Celotno besedilo (842,93 KB) Gradivo ima več datotek! Več... |
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47. Reconstruction of brown bear population dynamics in Slovenia in the period 1998-2019 : ǂa ǂnew approach combining genetics and long-term mortality dataKlemen Jerina, Andrés Ordiz, 2021, izvirni znanstveni članek Povzetek: Reliable data and methods for assessing changes in wildlife population size over time are necessary for management and conservation. For most species, assessing abundance is an expensive and labor-intensive task that is not affordable on a frequent basis. We present a novel approach to reconstructing brown bear population dynamics in Slovenia in the period 1998-2019, based on the combination of two CMR non-invasive genetic estimates (in 2007 and 2015) and long-term mortality records, to show how the latter can help the study of population dynamics in combination with point-in-time estimates. The spring (i.e. including newborn cubs) population size estimate was 383 (CI: 336-432) bears in 1998 and 971 (CI: 825-1161) bears in 2019. In this period, the average annual population growth rate was 4.5 %. The predicted population size differed by just 7 % from the non-invasive genetic size estimate after eight years, suggesting that the method is reliable. It can predict the evolution of the population size under different management scenarios and provide information on key parameters, e.g. background mortality and the sex- and age-structure of the population. Our approach can be used for several other wildlife species, but it requires reliable mortality data over time. Ključne besede: genetic estimates of population size, mortality records, population monitoring, population size, predictive modelling, brown bear Objavljeno v DiRROS: 28.03.2021; Ogledov: 4009; Prenosov: 2347 Celotno besedilo (1005,41 KB) Gradivo ima več datotek! Več... |
48. Spremljanje koncentracije askospor glive Eutypella parasiticaTine Hauptman, 2021, strokovni članek Povzetek: Gliva Eutypella parasitica izvira iz Severne Amerike in povzroča bolezen, imenovano javorov rak. V Sloveniji so jo prvič našli leta 2005, zdaj je razširjena po vsej državi, izkoreninjenje bolezni ni več mogoče. Da bi preprečili nadaljnje širjenje bolezni in zmanjšali število novih okužb, je treba okužena drevesa posekati. Pri tem velja navodilo, da okuženi del debla izrežemo vsaj 50 cm nad rano in pod njo, izrezani del pa nato na mestu sežgemo ali pa položimo na gozdna tla tako, da je rakava rana usmerjena proti tlom. Učinkovitost slednjega ukrepa smo želeli preverjati s spremljanjem koncentracij askospor glive E. parasitica v zraku, pred izvedenim ukrepom in po njem. Spremljanje ni bilo uspešno, tako da učinkovitosti ukrepa ne moremo potrditi. V prispevku predstavljamo metode spremljanja in razpravo o morebitnih razlogih za neuspešno lovljenje askospor glive E. parasitica. Ključne besede: javorov rak, Eutypella parasitica, monitoring, volumetrični vzorčevalnik, Slovenija Objavljeno v DiRROS: 08.03.2021; Ogledov: 1362; Prenosov: 384 Celotno besedilo (392,15 KB) |
49. Predlog števila in lokacij kontrolnih-lovnih pasti in kontrolno-lovnih nastav v 2021Nikica Ogris, Marija Kolšek, Maarten De Groot, 2021, kratki znanstveni prispevek Ključne besede: kontrolno-lovna past, kontrolno-lovna nastava, optimizacija, protokoli, osmerozobi smrekov lubadar, Ips typographus, smreka, Picea abies, spremljanje, monitoring Objavljeno v DiRROS: 04.02.2021; Ogledov: 1148; Prenosov: 931 Celotno besedilo (1,84 MB) Gradivo ima več datotek! Več... |
50. Priročnik za fenološka opazovanja dreves v mestu in urbanih gozdovihUrša Vilhar, 2014, slovar, enciklopedija, leksikon, priročnik, atlas, zemljevid Ključne besede: fenologija, urbani gozdovi, monitoring, drevnine, drevesa, priročniki Objavljeno v DiRROS: 01.02.2021; Ogledov: 1356; Prenosov: 451 Celotno besedilo (1,17 MB) |