41. Consistency of impact assessment protocols for non-native speciesPablo González-Moreno, Lorenzo Lazzaro, Montserrat Vila, Cristina Preda, Tim Adriaens, Sven Bacher, Giuseppe Brundu, Gordon H. Copp, Franz Essl, Nikica Ogris, 2019, izvirni znanstveni članek Povzetek: Standardized tools are needed to identify and prioritize the most harmful non-native species (NNS). A plethora of assessment protocols have been developed to evaluate the current and potential impacts of non-native species, but consistency among them has received limited attention. To estimate the consistency across impact assessment protocols, 89 specialists in biological invasions used 11 protocols to screen 57 NNS (2614 assessments). We tested if the consistency in the impact scoring across assessors, quantified as the coefficient of variation (CV), was dependent on the characteristics of the protocol, the taxonomic group and the expertise of the assessor. Mean CV across assessors was 40%, with a maximum of 223%. CV was lower for protocols with a low number of score levels, which demanded high levels of expertise, and when the assessors had greater expertise on the assessed species. The similarity among protocols with respect to the final scores was higher when the protocols considered the same impact types. We conclude that all protocols led to considerable inconsistency among assessors. In order to improve consistency, we highlight the importance of selecting assessors with high expertise, providing clear guidelines and adequate training but also deriving final decisions collaboratively by consensus.
Ključne besede: environmental impact, expert judgement, invasive alien species policy, management prioritization, risk assessment, socio-economic impact
Objavljeno v DiRROS: 03.04.2019; Ogledov: 2328; Prenosov: 1072
 Celotno besedilo (1,55 MB)
Gradivo ima več datotek! Več... |
42. Structure, development and growth of selection forests at the Granata research siteMatej Reščič, Andrej Bončina, 2007, izvirni znanstveni članek Povzetek: The Granata research site was established for the study of structure, growth and regeneration of silver fir-European beech single stem selection forest. Three phytocoenological relevés were carried out, all trees ?5 cm diameter at breast height (d.b.h.) were measured by full callipering, tree growth was analysed for sample trees, regeneration of tree species was registered on 63 sampling plots. In addition, historical data from past forest inventories werestudied. In the period from 1952 to 2003, the share of silver fir has decreased from 86% to 26%, the share of Norway spruce increased significantly,whereas the share of beech and sycamore has slightly increased. The current growing stock amounts to 350 m3 ha-1, with large-size diameter trees (d.b.h. ?50 cm) representing 51% of total growing stock. The site is divided into 16 stand patches with significant differences in tree species composition and diameter distribution. Regeneration is sufficient with silver fir prevailing in total number of seedlings (42%). 23% of all seedlings are damaged as a result of game browsing.
Ključne besede: selection forest, plenterwald, selection system management, stand structure, tree species composition, regeneration, diameter distribution
Objavljeno v DiRROS: 12.07.2017; Ogledov: 4924; Prenosov: 2084
Celotno besedilo (558,46 KB) |
43. An overview of alien Diptera in SloveniaMaarten De Groot, 2013, izvirni znanstveni članek Povzetek: The nonindigenous Diptera occurring in Slovenia are overviewed based on literature data. In total, 18 species belonging to eight Diptera families are alien to Slovenia. Most of the species originate from North America and continental Asia. The first record of an alien Diptera species (Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae)) was made in 1959, but the bulk of the species were recorded for the first time in the last two decennia. Most of the species were found in the pre-Alpine and sub-Mediterranean regions. The distribution and abundance of the alien Diptera are not fully known, as in most cases only the first observations were published. Most of the species are phytophagous and are known pests in agriculture and forestry. A list of expected nonindigenous Diptera species for Slovenia is given. It is suggested that a monitoring system should be developed in order to understand the population dynamics and the impact of the alien species on the ecosystem and economy.
Ključne besede: fauna, Diptera, nonindigenous species, Slovenia
Objavljeno v DiRROS: 12.07.2017; Ogledov: 3298; Prenosov: 946
Celotno besedilo (333,78 KB) |
44. |
45. Molecular basis of the functional differences between soluble human versus murine MD-2 : role of Val [sup] 135 in transfer of lipopolysaccharide from CD14 to MD-2Jožica Vašl, Alja Oblak, Tina Tinkara Peternelj, Javier Klett, Sonsoles Martín-Santamaría, Theresa L. Gioannini, Jerrold P. Weiss, Roman Jerala, 2016, izvirni znanstveni članek Ključne besede: MD-2, TLR-4, species specificity, innate immunology
Objavljeno v DiRROS: 10.11.2016; Ogledov: 4993; Prenosov: 1098
 Povezava na datoteko |
