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51.
Poročilo o preskusu št.: LVG 2023-023 : vzorec št. 2023/00070
Maarten De Groot, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Anoplophora chinensis, kitajski kozliček
Objavljeno v DiRROS: 24.05.2023; Ogledov: 199; Prenosov: 0

52.
Poročilo o preskusu št.: LVG 2023-017 : vzorec št. 2023/00048
Maarten De Groot, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Anoplophora chinensis, kitajski kozliček
Objavljeno v DiRROS: 26.04.2023; Ogledov: 275; Prenosov: 0

53.
Poročilo o preskusu št.: LVG 2023-016 : vzorec št. 2023/00042/mdg
Maarten De Groot, Tine Hauptman, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Anoplophora chinensis, kitajski kozliček
Objavljeno v DiRROS: 26.04.2023; Ogledov: 295; Prenosov: 0

54.
Geographical variation in abdominal colour pattern in Criorhina pachymera (Egger, 1858) (Diptera: Syrphidae)
Jan Bisschop, Maarten De Groot, Gaël Pétremand, 2023, izvirni znanstveni članek

Povzetek: The bee-mimicking hoverfly species Criorhina pachymera shows pronounced geographical variation in abdominal colour pattern. Based on 218 records from 22 European countries, we describe six abdomen forms divided over two main groups. Group A in western, northern and central parts of Europe contains abdomen forms A1–A3 with slender pollinose bands on the third and fourth tergite. Group B in south-eastern Europe contains forms B1–B3 with broad pollinose bands. These groups are separated by the Alps and the Carpathians, such as the separation of the original distributions of the two main postglacial recolonization lineages of honey bees in Europe. As these honey bee groups differ by the width of the pollinose bands on the third to fifth tergite, Batesian mimicry can explain the group distribution of C. pachymera with slender or broad pollinose bands. The different forms of C. pachymera in both groups are categorised by the extent of orange colouration on the second and third tergite. The darkest form A1, has a widespread distribution in Europe. Intermediate bright forms A2 and A3 occur predominantly in a belt along the southern margin of the group A distribution and in Sweden. Dark form B1 and intermediate bright form B2 occur on the Balkan peninsula and in neighbouring regions. The brightest form B3, is found in Italy, Switzerland (Ticino) and Greece. There is an average increase in the extent of orange colouration on the second and third tergite with decreasing geographical latitude, making temperature a likely additional cause for the described abdominal colour variation.
Ključne besede: hoverflies, colour variation, biogeography, Batesian mimicry, citizen science data
Objavljeno v DiRROS: 28.03.2023; Ogledov: 431; Prenosov: 194
.pdf Celotno besedilo (2,74 MB)
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55.
Use of an arboretum and DNA barcoding for the detection and identification of leaf-mining insects on alien woody plants
Natalia I. Kirichenko, Stanislav Gomboc, Barbara Piškur, Maarten De Groot, 2023, izvirni znanstveni članek

Povzetek: Arboreta serve as effective tools for identifying alien insect pests and novel trophic associations. In this study, we used an arboretum in Slovenia to survey woody plants and identify both alien and native leaf miners. The leaves and twigs of 50 woody plant species and their cultivars were examined for characteristic damage. We used an integrative approach that combined identification based on leaf mines and DNA barcoding of the larvae and pupae found in the mines. In total, 62 leaf-mining species were identified, including eight alien species, of which the heliozelid Coptodisca lucifluella (Clemens, 1860) and the agromyzid Cerodontha unisetiorbita Zlobin, 1992 were documented for Slovenia for the first time. Additionally, three presumably native Gracillariidae moths Phyllocnistis labyrinthella (Bjerkander, 1790), P. ramulicola Langmaid & Corley, 2007 and P. saligna (Zeller, 1839) represented the first record for Slovenia. Furthermore, we documented 23 novel-to-science trophic associations, 20 of which involved native insects and alien woody plants, primarily from Asia. This study highlights the importance of arboreta and botanical gardens for the interception of invasive alien insects and the early detection of trophic shifts of native insects to alien plants, which can aid in predicting their potential spread.
Ključne besede: botanical garden, sentinels, leaf miners, alien species, non-native trees, novel trophic associations, DNA barcoding, Slovenia
Objavljeno v DiRROS: 24.03.2023; Ogledov: 467; Prenosov: 215
.pdf Celotno besedilo (6,32 MB)
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56.
57.
Ascertaining the knowledge of the general public and stakeholders in the forestry sector to invasive alien species - a Pan-European study
Flavius Balacenoiu, Anže Japelj, Iris Bernardinelli, Bastien Castagneyrol, György Csóka, Milka Glavendekić, Gernot Hoch, Boris Hrašovec, Silvija Krajter Ostoić, Márton Paulin, David Williams, Johan Witters, Maarten De Groot, 2023, izvirni znanstveni članek

Povzetek: Against the background of the phenomenon of globalisation, which has increasingly intensified in recent decades, invasive alien species (IAS) have led to biological invasions that have resulted in multiple negative effects on economies, human health, and especially on the environment. In order to control invasive alien species, preventive actions are considered the most effective methods. In this context, society can actively participate in the process of early detection and preventing the spread of these organisms, but there is a need to raise public awareness. In order for this process to take place in the most efficient way, it is necessary to initially evaluate the knowledge of the general public to IAS. Through a questionnaire that was circulated in ten European countries and had over two thousand respondents, this study aimed to investigate the level of knowledge of some stakeholders in the forestry sector regarding IAS. The results showed that a vast majority of respondents who participated in the study had heard about IAS and provided a correct definition of these organisms. Most of the respondents in this study heard for the first time about IAS from school, the Internet, or journal articles. Data analysis also showed that stakeholders in the forestry sector (foresters, forest owners, and members of environmental NGOs) were more likely than the other respondents to be aware of the impact of IAS. The results of this study offer an insight to researchers and decision makers assessing the differences of opinion regarding invasive alien species, and the necessary steps that could be adopted in the process of raising awareness in society.
Ključne besede: citizen science, online survey, biosecurity
Objavljeno v DiRROS: 09.03.2023; Ogledov: 517; Prenosov: 212
.pdf Celotno besedilo (1,23 MB)
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58.
Poročilo o preskusu št.: LVG 2023-004 : vzorec št. 2023/00012/mdg
Maarten De Groot, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Hylesinus crenatus, veliki jesenov lubadar, veliki jesen
Objavljeno v DiRROS: 28.02.2023; Ogledov: 337; Prenosov: 0

59.
60.
Hoverflies (Diptera: Syrphidae) as biodiversity indicators for assessing urban forest habitats
Maarten De Groot, Primož Simončič, Andrej Verlič, Urša Vilhar, 2022, izvirni znanstveni članek

Povzetek: Urban and peri-urban forests are important habitats for maintaining biodiversity in cities. In this paper, we report a method for using hoverflies as biodiversity indicators in urban forest habitats. As a case study, forest habitats in three peri-urban and urban forests were assessed and compared to rural forests in Slovenia. Rožnik (Ljubljana) was chosen as the urban forest site, Mestni log (Ljubljana) and Brdo (Kranj) were chosen as the peri-urban sites, and eight sites were chosen in rural forests in different ecoregions in Slovenia. Forest hoverfly species richness and the species composition of different biological traits were compared between the peri-urban forests, urban forest and rural forest sites. In addition, species richness was assessed for changes in response to weather conditions between years. The number of species with the investigated traits in the urban and peri-urban forests was within the range of the number of species observed in the rural forests. The number of saproxylic species was higher in the urban forest but lower in the peri-urban forests compared to the rural forests. The proportions of species with different feeding modes and different development times were similar between the peri-urban, urban and rural forests. The proportions of species with development times of less than 2 months or more than 1 year and of predatory species were similar in the urban and peri-urban forests but higher in the rural forests. The species composition of the other biological traits differed between the peri-urban, urban and rural forests. Species richness and abundance displayed large differences in phenological patterns between 2012 and 2013; these differences are related to differences in the minimum temperature for these years. The results are discussed in relation to forest management in urban forests, the usefulness of hoverflies as a biodiversity indicator and possible extrapolation to other species groups.
Ključne besede: biological traits, ecosystem services, forest management, saproxylic species, Syrphidae, urban forest
Objavljeno v DiRROS: 30.12.2022; Ogledov: 1416; Prenosov: 668
.pdf Celotno besedilo (1,40 MB)
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