Digitalni repozitorij raziskovalnih organizacij Slovenije

Iskanje po repozitoriju
A+ | A- | Pomoč | SLO | ENG

Iskalni niz: išči po
išči po
išči po
išči po

Možnosti:
  Ponastavi


Iskalni niz: "avtor" (Irena Bertoncelj) .

1 - 10 / 12
Na začetekNa prejšnjo stran12Na naslednjo stranNa konec
1.
Soil microarthropod biodiversity in agricultural landscapes : revisiting the QBS index through DNA metabarcoding
Vid Naglič, Tijana Martinović, Nataša Šibanc, Paul Henning Krogh, Rumakanta Sapkota, Anne Winding, Robert Leskovšek, Irena Bertoncelj, 2026, izvirni znanstveni članek

Povzetek: The Qualita ` Biologica del Suolo (QBS-ar) index provides a rapid, low-cost measure of soil biological quality by assigning arthropods in morphotaxonomic groups named biological forms. Although widely used, its low taxonomic resolution and reliance on expert-defined scores limits its sensitivity to subtle management effects. We therefore evaluated whether DNA metabarcoding can complement and refine QBS-based assessments by analysing soil microarthropod communities across seven agricultural treatments differing in tillage intensity and production system. Using COI metabarcoding, we compared α- and β-diversity patterns between molecular and QBS datasets, evaluated different QBS index variants in relation to DNA amplicon sequence variant (ASV) richness, and explored potential for a preliminary DNA-derived index based on QBS-like trait scoring. DNA metabarcoding resolved clear community separation among production systems and treatments that the QBS only partially detected and revealed indicator taxa characteristic of reduced-disturbance and organic management. The QBS indices distinguished major production systems but were less responsive to within-system variation. Correlations between ASV richness and QBS-ar varied among production systems, indicating contextdependent index performance. The experimental DNA-derived QBS index (QBS-DNA) retained a QBS-like trait signal, showing positive treatment-mean correlations with morphology-based QBS-ar and QBS-ar_BF, but it did not significantly distinguish treatments. These results support QBS-DNA as a proof-of-concept framework for translating trait-based soil-quality indicators into molecular biodiversity assessments. As molecular tools and trait databases expand, metabarcoding enables the development of next-generation soil biodiversity indicators based on explicit, species-level functional traits, moving beyond the constraints of classical QBS formulations while retaining their ecological intent.
Ključne besede: Mesofauna, Soil quality index, Microarthropods, Microarthropod biodiversity, COI, Molecular bioindicators, Environmental DNA, Soil biodiversity
Objavljeno v DiRROS: 11.05.2026; Ogledov: 93; Prenosov: 66
.pdf Celotno besedilo (2,31 MB)
Gradivo ima več datotek! Več...

2.
3.
4.
5.
6.
Soil mesofauna diversity in agricultural systems of Slovenia using the QBS index and its modifications
Vid Naglič, Nataša Šibanc, Tine Grebenc, Irena Bertoncelj, 2025, izvirni znanstveni članek

Povzetek: Soil mesofauna plays a key role in maintaining soil health by supporting the decomposition of organic matter, nutrient cycling and the maintenance of soil structure. In this study of Slovenian agricultural ecosystems, we used four modifications of the QBS index, a soil biological quality index based on soil mesofauna. We compared diversity in arable fields under different tillage intensities, a strawberry field and an orchard, managed with either organic or integrated pest management methods (IPM). The results show significant differences in the mesofaunal communities in the soil. Minimum tillage promoted higher biodiversity, especially of Collembola, compared to conventional tillage. In fruit production systems, the ratio of Collembola to Acarina differed from that of arable fields, skewing in favour of Collembola, possibly related to the use of copper-containing pesticides in organic orchards and systemic herbicides in IPM systems. The QBS index values for soil health varied considerably between systems. Only QBS modifications considering the abundances of organisms (QBS-ab and QBS-a) were able to distinguish between different system-management groups. This study provides insights into the limitations of the originally proposed QBS-ar index to discern the effects of farming intensity on the soil mesofaunal community. Results suggest that minimum tillage and organic management practices can promote healthier soil ecosystems, emphasizing the importance of sustainable soil management for the promotion of soil biodiversity. Future research should aim to incorporate a broader range of agricultural practices and assign fauna to a higher taxonomic rank to further explain the effects on soil mesofauna diversity.
Ključne besede: soil health, soil microarthropods, biodiversity, agroecosystems, tillage intensity, organic farming
Objavljeno v DiRROS: 03.12.2024; Ogledov: 1088; Prenosov: 582
.pdf Celotno besedilo (925,75 KB)
Gradivo ima več datotek! Več...

7.
8.
9.
Izvajanje spremljanja stanja populacij izbranih ciljnih vrst hroščev v letu 2013 in 2014 : Carabus variolosus, Lucanus cervus, Rosalia alpina, Morimus funereus, Osmoderma eremita, Cucujus cinnaberinus
Al Vrezec, Špela Ambrožič Ergaver, Andrej Kapla, Irena Bertoncelj, Dejan Bordjan, 2014, končno poročilo o rezultatih raziskav

Povzetek: V končnem poročilu so predstavljeni rezultati terenskih raziskav šestih varstveno pomembnih vrst hroščev v Sloveniji v letih 2013 in 2014. Za močvirskega krešiča (Carabus variolosus), rogača (Lucanus cervus), alpskega kozlička (Rosalia alpina) in bukovega kozlička (Morimus funereus) je v Sloveniji že vzpostavljena shema populacijskega in distribucijskega monitoringa s pripadajočimi metodološkimi protokoli in je pričujoča naloga poročilo o stanju v letih 2013 in 2014 glede na podatke zbrane v okviru populacijskega in distribucijskega monitoringa. Za tri vrste (močvirski krešič, rogač in alpski kozliček) smo izračunali populacijske trende in ugotovili zmeren upad populacije močvirskega krešiča ter stabilni populaciji tako rogača kot alpskega kozlička. Za alpskega in bukovega kozlička smo po zaključku petletnega ciklusa snemanja evalvirali shemo monitoringa in podali predloge izboljšave sheme za nadaljnji monitoring vrst. V poročilu so predstavljeni rezultati popisa v letih 2013 in 2014 za dopolnitev razširjenosti vrste puščavnika (Osmoderma eremita) in škrlatnega kukuja (Cucujus cinnaberinus). Glavni namen pričujoče naloge je bilo tudi testiranje metode lova puščavnika v letu 2014. Poznavanje razširjenosti škrlatnega kukuja (Cucujus cinnaberinus) v zahodni Sloveniji je slabše, zato je bila izvedena dodatna raziskava razširjenosti. Glede na dosedanja vedenja o populacijah vseh že potrjenih vrst hroščev evropskega varstvenega pomena pri nas, podajamo nekaj smernic nujnih raziskav, ki bi jih bilo potrebno iz tega naslova izvesti v Sloveniji. Pri tem smo se osredotočili le na dejansko potrjene vrste.
Ključne besede: hrošči, monitoring, ekologija
Objavljeno v DiRROS: 16.09.2024; Ogledov: 1444; Prenosov: 931
.pdf Celotno besedilo (4,37 MB)
Gradivo ima več datotek! Več...

10.
Overview of raptor monitoring activities in Europe
Al Vrezec, Guy Duke, András Kovács, Pertti Saurola, Chris Wernham, Ian Burfield, Paola Movalli, Irena Bertoncelj, 2012, pregledni znanstveni članek

Povzetek: Despite the key role of raptors (including birds of prey Falconiformes and owls Strigiformes) in ecosystems and their sensitivity to environmental change, a well coordinated, Europe-wide monitoring of raptors is lacking. EURAPMON, a Research Networking Programme of the European Science Foundation, was launched with the aim of establishing a sustainable Europewide network for monitoring of raptors. An overview of current monitoring schemes for raptor populations in 28 European countries, as reported by EURAPMON National Coordinators at the workshop in Murcia (Spain) in 2012, showed existing monitoring schemes to be limited to a restricted number of species (mostly diurnal and rare raptor species). The most widely monitored species are the Golden Eagle Aquila chrysaetos amongst diurnal raptors and the Eagle Owl Bubo bubo amongst owls. Broad coverage of a species range across Europe is reached only for restricted-range species. The key driver for monitoring, which is mostly coordinated by NGOs, is conservation, and the main end users are governmental institutions. International collaboration in the field of monitoring of raptors is mainly regional and not yet pan-European in scale. The involvement of volunteers in raptor monitoring was perceived as the main strength of many schemes, but insufficient manpower and a focus on rare species were recognised as the main weaknesses across Europe as a whole. Among priorities identified for the future development of monitoring schemes are: improvements to national coordination; support to increase the number of volunteers; and assurances of stable funding. Further analysis of EURAPMON questionnaires will identify knowledge gaps, which will steer good practice guidance on survey methodologies; the need for the latter was identified as the main benefit that National Coordinators expect to gain from international networking
Ključne besede: Europe, raptor monitoring scheme, birds of prey, owls, monitoring inventory
Objavljeno v DiRROS: 06.08.2024; Ogledov: 1299; Prenosov: 769
.pdf Celotno besedilo (573,54 KB)
Gradivo ima več datotek! Več...

Iskanje izvedeno v 0.26 sek.
Na vrh