diplomsko delo - univerzitetni študij - 1. stopnja
Povzetek
Tujerodni ambrozijski podlubnik Xylosandrus germanus je bil v Sloveniji prvič najden leta 2000. Kasnejše raziskave so pokazale, da se je vrsta v naših gozdovih močno razširila in namnožila, nepoznana pa je bila zgornja meja pojavljanja te vrste pri nas. Cilj diplomske naloge je zato bil preveriti prisotnost in številčnost tujerodnega podlubnika X. germanus na različnih nadmorskih višinah, na južnem pobočju Krvavca. 19. aprila 2022 smo postavili 8 križnih cevnih pasti z etanolom, ki so bile razporejene na višinskem gradientu od 798 do 1478 m n. v. Pasti smo praznili v dvotedenskih intervalih do 22. julija 2022. Determinacija ulova je pokazala, da so bili hrošči X. germanus ujeti v vseh osmih pasteh, ulov na 1478 m n. v. pa po nam znanih podatkih predstavlja najvišjo ugotovljeno najdba te vrste v Evropi. Ulov X. germanus je predstavljal 60,9 % celotnega ulova hroščev (Coleoptera) in 82,7 % ulova vseh podlubnikov (Scolytinae). Od ostalih vrst podlubnikov sta bila v ulovu najštevilčnejši avtohtoni ambrozijski vrsti Xyleborinus saxesenii in Anisandrus dispar, ki sta predstavljali 7,7 % in 3,2 % celotnega ulova podlubnikov. Z našo raziskavo smo potrdili hipotezo, da je velikost populacije tujerodnega podlubnika X. germanus v slovenskih gozdovih izjemno velika, tudi na višjih nadmorskih višinah, kjer to do sedaj ni bilo ugotovljeno. Kljub ugotovljeni veliki populaciji pa na našem raziskovalnem območju znakov napada oziroma škod, ki bi jih ta vrsta povzročala, nismo odkrili.
Ključne besede
ambrozijski podlubnik;Xylosandrus germanus;vertikalna razširjenost;tujerodne vrste;pasti;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2021 |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UL BF - Biotehniška fakulteta |
Založnik: |
[N. Marovt] |
UDK: |
630*14:630*15(497.4Krvavec)(043.2)=163.6 |
COBISS: |
122447619
|
Št. ogledov: |
7 |
Št. prenosov: |
1 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Vertical distribution of Xylosandrus germanus (Coleoptera, Curculionidae, Scolytinae) on the southern slope of Krvavec mountain |
Sekundarni povzetek: |
The non-native ambrosia bark beetle Xylosandrus germanus was found in Slovenia for the first time in 2000. Later research confirmed widespread and massive occurrence of the species in our forests, but the upper limit of occurrence of this species in our country was unknown. The aim of the thesis was therefore to verify the presence and abundance of the non-native bark beetle X. germanus at different altitudes, on the southern slope of Krvavac mountain. On April 19, 2022, 8 cross-vane panel traps with ethanol were set on altitude interval between 798 and 1478 m a.s.l. The traps were emptied at two-week intervals until July 22, 2022. The determination of the catch showed that X. germanus beetles were caught in all eight traps, the catch at 1478 m a.s.l. is thus, according to the data known to us, the highest find of this species in Europe. The catch of X. germanus represented 60.9% of the total catch of beetles (Coleoptera) and 82.7% of the catch of all bark beetles (Scolytinae). Of the other species of bark beetles, the most abundant were native ambrosia species X. saxesenii and A. dispar, with 7.7% and 3.2% of the total catch of bark beetles. Our research confirmed that the population size of the non-native bark beetle X. germanus is extremely large in Slovenian forests, even at altitudes where this has not been found until now. Despite the extremely large population found, no signs of attack or damage caused by this species were discovered in our research area. |
Sekundarne ključne besede: |
black timber bark beetle;Xylosandrus germanus;vertical distribution;non-native species;traps; |
Vrsta dela (COBISS): |
Diplomsko delo/naloga |
Študijski program: |
0 |
Komentar na gradivo: |
Univ. v Ljubljani, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire |
Strani: |
VII, 30 f. |
ID: |
16534320 |