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Analizirali smo živi arhiv metasekvoje (Metasequoia glyptostroboides Hu et Cheng) na obrečnem rastišču ob Savi pri Ljubljani. Osnovan je bil v letih 1993 in 1994 s sadikami, vzgojenimi iz originalnih semen z območja na Kitajskem, kjer je bila vrsta opisana (klasično nahajališče oz. locus classicus). Drevesa v nasadu so bila prvič izmerjena spomladi leta 2000 in nato še leta 2006, spomladi v letu 2020 pa smo meritve ponovili. V starosti 30 let je povprečno drevo merilo v višino 20,7 m, povprečni premer koreninskega vratu na višini debla 0,1 m je znašal 72,3 cm, povprečni premer debla na prsni višini pa 51,4 cm. Ugotovili smo, da je pogostnost reproduktivnih organov, torej storžev in moških cvetov, povezana s premerom in višino drevesa. Užlebljenost debla je zelo variabilna in povezana s premerom, zelo variabilno je tudi zmanjšanje premera z višino. Povezave med omenjenimi znaki in lego drevesa v nasadu nismo ugotovili. Svetloba oziroma lega v nasadu ni edini dejavnik, ki vpliva na lastnosti posameznega drevesa, vzrok je tudi genetska variabilnost med drevesi. The live archive of dawn redwood (Metasequoia glyptostroboides Hu et Cheng) on a riparian site of river Sava near Ljubljana, which was established in 1993 and 1994, has been analyzed. The trees have been grown from original seeds from an area in China where it was first described (locus classicus). The measurements of all trees on the plantation were carried out in 2000 and 2006. For the purpose of this research, they were taken again in 2020, and the latest data has been analyzed. The average tree height of 30-year-old trees was 20.7 m, the average tree diameter 10 cm above root crown was 72.3 cm and the average tree breast height diameter was 51.4 cm. It has been found that the incidence of reproductive organs, such as cones and male strobili, correlates to the diameter and height of trees, but not to the position on the plantation. The trunks’ ridges do not depend on the position in the plantation however they vary significantly among trees. The light and the position on the plantation are not the only factors affecting the characteristics of individual trees, the reason is also the genetic variability of trees.

Prepoznavanje invazivnih tujerodnih vrst (ITV) na terenu in hiter odziv na nove najdbe ITV v gozdovih sta med ključnimi izzivi gozdarske stroke. Z namenom krepitve zmogljivosti za zgodnje zaznavanje tujerodnih vrst v gozdovih je bilo v okviru projekta Osveščanje, usposabljanje in ukrepanje za invazivne tujerodne vrste v gozdu (LIFE ARTEMIS), ki je potekal v letih 2016-2020, 33 izobraževanj po Sloveniji in eno v tujini. Skupno se je izobraževanj udeležilo 1.059 udeležencev. Izobraževanja so bila izvedena za izvajalce usposabljanj, strokovnjake, lastnike gozdov, prostovoljce in zaposlene v podjetjih, povezanih z gozdom. Izobraževalni cilji usposabljanj so bili doseženi. Analiza samoocenjevalnih vprašalnikov udeležencev izobraževanj je pokazala, da so bili pred usposabljanjem malo do srednje usposobljeni, po usposabljanju pa srednje do dobro. Pred usposabljanjem je manj kot polovica anketirancev vedela, kako se odzvati, ko opazijo ITV v gozdu. Po usposabljanju pa je to vedelo več kot 90 % anketiranih. Po usposabljanju za prenos sistema za zgodnje obveščanje in hitro odzivanje (ZOHO) v druge evropske države je več kot 80 % anketiranih odgovorilo, da so se naučili nekaj novega o ITV, 79 % anketiranih pa si želi tudi v prihodnje sodelovati v sistemu ZOHO. Udeleženci si v prihodnje želijo predvsem dodatnih znanj na področju prepoznavanja ITV ter več terenskih izobraževanj. V prispevku predstavljamo rezultate spremljanja uspešnosti usposabljanj in razpravo o morebitni potrebi po dodatnih usposabljanjih na področju obveščanja in hitrega odzivanja za tujerodne vrste v gozdnem prostoru. Identifying alien invasive species (IAS) in the field and fast response to new IAS findings in forests represent one of the key challenges of modern forestry. Aiming to intensify the capacities for early detection of non-native species in forests, 33 training courses in Slovenia and one abroad were performed in the framework of the project Awareness, Training, and Actions for Non-Native Species in Forests (LIFE ARTEMIS) project taking place in years 2016-2020. A total of 1,059 participants attended the training courses. The training courses were performed for the training performers, professionals, forest owners, volunteers, and employees in the companies, connected with the forest. The training goals of these training courses were achieved. The analysis of the self-evaluation questionnaires showed that the participants had been little to fairly trained before the training and fairly to well-trained afterwards. Before the training, less than half of the respondents had known how to respond when noticing IAS in the forest. After the training, over 90 % of the respondents knew it. After the training for transferring the early warning and rapid response (EWRR) system into other European countries, over 80 % of the respondents answered that they learned something new about IAS. 79 % of the respondents wish to take part in the EWRR system also in the future. The participants want, above all, additional knowledge in the field of IAS detection and more field training in the future. In our article, we present the results of the training success monitoring and the discussion about an eventual need for additional training in the field of informing and fast response for non-native species in the forest space.

V besedilu sta predstavljeni organiziranost in delovanje javne gozdarske službe na področju varstva gozdov, ki obsega dve inštituciji: Zavod za gozdove Slovenije (ZGS) in Gozdarski inštitut Slovenije (GIS). Opisana je tudi umeščenost varstva gozdov v slovenski sistem zdravja rastlin, ki ga vodi Uprava za varno hrano, veterinarstvo in varstvo rastlin. V letu 2020 sodelavci GIS in ZGS vodijo ali sodelujejo v naslednjih programih preiskav karantenskih organizmov v okviru sistema zdravja rastlin: brezov krasnik (Agrilus anxius), jesenov krasnik (Agrilus planipennis), kitajski kozliček (Anoplophora chinensis), azijski kozliček (Anoplophora glabripennis), borova ogorčica (Bursaphelenchus xylophilus), sibirska svilena kokljica (Dendrolimus sibiricus), bolezen tisočerih rakov (Geosmithia morbida in vektor Pityophthorus juglandis), borov smolasti rak (Fusarium circinatum), neevropski žagovinarji (Monochamus spp. (neevropski)), neevropski rilčkarji (Pissodes spp. (neevropski)), azijski ambrozijski podlubnik (Xylosandrus crassiusculus), fitoftorna sušica vej (Phytophthora ramorum). V preteklosti so sodelovali še v programih preiskav za: kostanjeva šiškarica (Dryocosmus kuryphilus), šarka (Plum pox potyvirus), rjavenje borovih iglic (Lecanosticta acicola), rdeča pegavost borovih iglic (Dothistroma spp.), hrastova uvelost (Bretziella fagacearum), zlatopegasti krasnik (Agrilus auroguttatus), borov črni rak (Atropellis spp.) in rjavenje plodov pravega kostanja (Gnomoniopsis smithogilvyi). Podrobneje je predstavljeno delo o šestih škodljivih organizmih in našteti so raziskovalno-strokovni izzivi, ki bi jih slovensko gozdarstvo moralo obravnavati, da bi uspeli uresničiti končni cilj, ki je zdrav in stabilen slovenski gozd. The inclusion of forest protection in the Slovenian plant health system, which is coordinated by the Administration for Food Safety, Veterinary Sector and Plant Protection, is discussed. Further, the Public Forestry Service, consisting of the Slovenian Forest Service and the Slovenian Forestry Institute, is described. In 2020, the Slovenian Forest Service and the Slovenian Forestry Institute, lead or participate in the following survey programmes: Agrilus anxius, Agrilus planipennis, Anoplophora chinensis, Anoplophora glabripennis, Dendrolimus sibiricus, Geosmithia morbida and its vector Pityophthorus juglandis, Fusarium circinatum, non-European Monochamus spp., non-European Pissodes spp., Xylosandrus crassiusculus, Phytophthora ramorum. In the past, the survey programmes for the following organisms were performed: Dryocosmus kuryphilus, Plum pox potyvirus, Lecanosticta acicola, Dothistroma spp., Bretziella fagacearum, Agrilus auroguttatus, Atropellis spp. and Gnomoniopsis smithogilvyi. In the following contribution, the work on six harmful organisms is presented, and the research and professional challenges that Slovenian forestry should address in order to achieve the ultimate goal of a healthy and stable Slovenian forest are listed.

The project focussed on the optimization of monitoring strategies and pest management practices. In particular, the project aimed to optimize monitoring methods using attractant traps, to map the incidence for pine wood nematodes and possible vectors, to evaluate phenology and biology of relevant vectors and their pine wood nematodes relationship and to develop molecular identification tests for Monochamus spp. Participating research institutions included 7 research organisations from 5 countries; in four of these countries, the vectors were known to be present, in one country the PWN was known to be present and in one country no vector nor the nematode was known to be established., Report of the Euphresco funded project 'Focusing on Monochamus spp., insect vectors of Bursaphelenchus xylophilus (MONOCHAMUS)'