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" (De%20Groot Maarten) .

1 - 10 / 218
Na začetekNa prejšnjo stran12345678910Na naslednjo stranNa konec
1.
Importance of habitat context in modelling risk maps for two established invasive alien plant species : the case of Ailanthus altissima and Phytolacca americana in Slovenia (Europe)
Maarten De Groot, Erika Kozamernik, Janez Kermavnar, Marija Kolšek, Aleksander Marinšek, Andreja Nève Repe, Lado Kutnar, 2024, izvirni znanstveni članek

Povzetek: Forests are important ecosystems that face threats from climate change and global environmental shifts, with invasive alien plant species being a significant concern. Some of these invasive species have already become established, while others are in the process of naturalisation. Although forests are a relatively stable ecosystem, extreme weather events increase their vulnerability to change, and clearings left after natural disturbances are particularly susceptible to invasion by alien plant species (IAPS). We created risk maps of two species that have spread rapidly in the last decade: American pokeweed (Phytolacca americana) and the tree of heaven (Ailanthus altissima). We prepared a generalised linear model based on the occurrence data collected within the LIFE ARTEMIS project. Eleven environmental variables were used to determine habitat characteristics. We constructed two models for each species: one covering the entirety of Slovenia and the other specifically for the forested areas in Slovenia, with the latter incorporating forest-specific variables (such as forest sanitation felling and monocultures). We observed the presence of both species at lower altitudes and in close proximity to water sources. American pokeweed tends to occur nearer to railways, while the presence of the tree of heaven is associated with areas lacking carbonate parent material and influenced by land use patterns. In forested areas, the occurrence of American pokeweed is influenced by forest habitat characteristics, such as disturbances caused by extreme weather events or the prevalence of Norway spruce monocultures. In contrast, the occurrence of the tree of heaven is influenced by more general environmental variables, such as altitude and proximity to railways. Consequently, we have generated risk maps for the entirety of Slovenia and separately for forested areas, both of which indicate similar levels of risk, particularly for the tree of heaven. The risk map for American pokeweed highlights numerous vulnerable areas, especially forest edges, which are highly susceptible to invasion. Furthermore, there is a higher likelihood of this species occurring in areas that have undergone sanitation felling. This study suggests that the production of risk maps of IAPS could be improved by focussing on habitat types and taking into account habitat-specific variables. This approach could enhance the early detection and management of these invasive species.
Ključne besede: American pokeweed, tree of heaven, species distribution modelling, forests, forest disturbance, habitat suitability
Objavljeno v DiRROS: 26.03.2024; Ogledov: 30; Prenosov: 11
.pdf Celotno besedilo (1,72 MB)
Gradivo ima več datotek! Več...

2.
Poročilo o preskusu št.: LVG 2024-015 : vzorec št. 2024/00048/mdg/, namen testiranja: sum na Cerambycidae
Maarten De Groot, 2024, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize
Objavljeno v DiRROS: 11.03.2024; Ogledov: 74; Prenosov: 0
Gradivo ima več datotek! Več...

3.
Poročilo o preskusu št.: LVG 2024-010 : vzorec št. 2024/00044
Nikica Ogris, Maarten De Groot, 2024, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, graden, Quercus petraea, sušenje, hiranje, kompleksna bolezen
Objavljeno v DiRROS: 13.02.2024; Ogledov: 125; Prenosov: 29
.pdf Celotno besedilo (1,12 MB)

4.
The influence of storage conditions and DNA extraction protocol on the results of molecular analysis of the European spruce bark beetle (Ips typographus L.)
Zina Devetak, Andreja Kavčič, Maarten De Groot, Barbara Piškur, 2023, izvirni znanstveni članek

Povzetek: One of the key steps of the molecular identification of bark beetles is obtaining a sufficient quantity of high-quality DNA extract. In this study, we investigated the influence of different storage procedures for Ips typographus (L.) specimens and various DNA extraction protocols on the quantity and quality of DNA intended for use in molecular diagnostics. Adult beetles were frozen at -20 °C, either dry or in ethanol. We tested four different protocols for DNA extraction. We compared the quantity of extracted DNA and assessed its quality with PCR and Sanger sequencing. Different storage protocols had no significant effect on the quantity of DNA extracted. However, freezing specimens in ethanol provided higher-quality DNA for molecular applications. Only two of the extraction protocols produced sequenceable amplicons, and the difference in the amount of extracted DNA between them was not significant. We propose the optimal combination of storing specimens in ethanol at -20°C and using the Nucleospin Insect DNA extraction kit from Macherey Nagel, enabling a timeefficient identification process.
Ključne besede: early detection, specimen storage, total DNA extraction, PCR, polymerase chain reaction, Sanger sequencing, molecular diagnostics
Objavljeno v DiRROS: 02.02.2024; Ogledov: 330; Prenosov: 101
.pdf Celotno besedilo (1,17 MB)
Gradivo ima več datotek! Več...

5.
Poročilo o preskusu št.: LVG 2024-007 : vzorec št. 2024/00011/MdG
Maarten De Groot, 2024, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Corythucha arcuata, hrastova čipkarka
Objavljeno v DiRROS: 31.01.2024; Ogledov: 154; Prenosov: 0

6.
Citizen science is a vital partnership for invasive alien species management and research
Michael J.O. Pocock, Tim Adriaens, Sandro Bertolino, René Eschen, Franz Essl, Philip E. Hulme, Jonathan M. Jeschke, Helen E. Roy, Heliana Teixeira, Maarten De Groot, 2023, izvirni znanstveni članek

Povzetek: Invasive alien species (IAS) adversely impact biodiversity, ecosystem functions and socio-economics. Citizen science can be an effective tool for IAS surveillance, management and research, providing large datasets over wide spatial extents and long time periods, with public participants generating knowledge that supports action. We demonstrate how citizen science has contributed knowledge across the biological invasion process, especially for early detection and distribution mapping. However, we recommend that citizen science could be used more for assessing impacts and evaluating the success of IAS management. Citizen science does have limitations and we explore solutions to two key challenges: ensuring data accuracy and dealing with uneven spatial coverage of potential recorders (which limits the dataset’s ‘fit for purpose’). Greater co-development of citizen science with public stakeholders will help us better realise its potential across the biological invasion process and across ecosystems globally while meeting the needs of participants, local communities, scientists and decision-makers.
Ključne besede: biosecurity, community science, invasion continuum, invasive alien species, monitoring, volunteers
Objavljeno v DiRROS: 25.01.2024; Ogledov: 179; Prenosov: 104
.pdf Celotno besedilo (3,81 MB)
Gradivo ima več datotek! Več...

7.
Efficacy of trapping protocols for Agrilus jewel beetles : a multi-country assessment
Giacomo Santoiemma, David Williams, Everett G. Booth, Giacomo Cavaletto, James Connell, Gianfranco Curletti, Maarten De Groot, Sarah M. Devine, Abigail Enston, Joseph A. Francese, Eva Groznik, Tine Hauptman, 2024, izvirni znanstveni članek

Povzetek: The genus Agrilus is one of the most diverse insect genera worldwide. The larval feeding activity causes extensive damage in both forests and orchards. In addition, more than 30 species have been introduced outside their native range so far, including the emerald ash borer Agrilus planipennis Fairmaire. Thus, the availability of efficient trapping protocols for early detection of Agrilus species at entry points is of utmost importance. In this study we tested whether trapping protocols developed for surveillance of A. planipennis in North America were also effective for other Agrilus species. In particular, through a multi-country assessment we compared the efficacy of detecting Agrilus species on: (i) green glue-coated prism traps vs. green Fluon-coated multi-funnel traps when baited with the green leaf volatile (Z)-3-hexenol or left unbaited; and (ii) green multi-panel traps vs. green multi-panel traps baited with dead adult Agrilus beetles (decoys). A total of 23,481 individuals from 45 Agrilus species were caught. Trap design significantly affected both species richness and abundance of Agrilus species in several of the countries where the trapping experiments were carried out, and green prism traps outperformed green multi-funnel traps in most cases. On the contrary, the addition of a (Z)-3-hexenol lure or dead adult beetle decoys on to traps did not improve trap catches. Our study highlights that reliable trap models to survey Agrilus species are already available, but also that there is the clear need to further investigate chemical ecology of Agrilus species to develop semiochemical lures that can improve detection efficacy.
Ključne besede: biosecurity, early detection, forest pests, lures, traps, visual stimuli, Agrilus, beetles
Objavljeno v DiRROS: 19.01.2024; Ogledov: 153; Prenosov: 105
.pdf Celotno besedilo (3,11 MB)
Gradivo ima več datotek! Več...

8.
Razširjenost dvojnozobega smrekovega lubadarja (Ips duplicatus) v Sloveniji v letu 2023
Maarten De Groot, Tine Hauptman, Marija Kolšek, 2023, kratki znanstveni prispevek

Povzetek: Članek prikazuje rezultate raziskave razširjenosti vrste Ips duplicatus (Sahlberg, 1836) v Sloveniji v letu 2023. Uporabili smo 14 režastih pasti tipa Theysohn, ki so bile opremljene s feromonom Dupliwit. V raziskavo smo vključili tudi tri križne prestrezne pasti brez feromona, ki so bile postavljene v sklopu drugega projekta in smo v njih odkrili vrsto I. duplicatus. Prisotnost vrste smo potrdili na šestih lokacijah, skupno pa smo ujeli osem osebkov. Predstavljena je razprava o pomenu teh najdb v kontekstu razširjenosti, spremljanja in upravljanja dvojnozobega smrekovega lubadarja.
Ključne besede: gozdovi, varstvo gozdov, monitoring, navadna smreka, Picea abies, podlubniki, invazivna tujerodna vrsta
Objavljeno v DiRROS: 10.01.2024; Ogledov: 164; Prenosov: 73
.pdf Celotno besedilo (575,46 KB)
Gradivo ima več datotek! Več...

9.
Poročilo o preskusu št.: LVG 2023-221 : vzorec št. 2023/00777
Maarten De Groot, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Ips duplicatus, dvojnozobi smrekov lubadar
Objavljeno v DiRROS: 19.12.2023; Ogledov: 167; Prenosov: 0

10.
Poročilo o preskusu št.: LVG 2023-220 : vzorec št. 2023/00774
Maarten De Groot, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Ips duplicatus, dvojnozobi smrekov lubadar
Objavljeno v DiRROS: 19.12.2023; Ogledov: 190; Prenosov: 0

Iskanje izvedeno v 2.14 sek.
Na vrh