Sumarski List最新文献

{"title":"Relationship of silver fir (Abies alba Mill.) mortality in the area of Fužine with climatic and structural parameters","authors":"D. Ugarković, I. Seletković, Ivica Tikvić, Mladen Ognjenović, Krešimir Popić, M. Orešković, N. Potočić","doi":"10.31298/sl.145.7-8.1","DOIUrl":"https://doi.org/10.31298/sl.145.7-8.1","url":null,"abstract":"Tree dieback is a complex process involving negative impact of various abiotic, biotic and anthropogenic factors. Climate change, comprising all those effects, is generally considered as the largest threat to forest ecosystems in Europe. Although the scale of climate change impacts on forests is not yet fully understood, especially on the regional or species level, significant damage seems to be caused by weather extremes, such as drought and strong winds. With the expected increase in the number, length, and/or intensity of extreme weather events in Croatia, research into the causes of tree mortality is both important and timely.\u0000Silver fir is the most damaged and endangered conifer tree species in Croatia. The dieback of silver fir can be attributed to various factors, therefore the goals of this research were to determine the mortality of silver fir trees (by number and volume) for various causes of mortality, among which the climatic and structural parameters were of most interest. The twenty-year data for tree mortality in pure silver fir stands in the area of Fužine (Gorski kotar, Croatia) were collected and analysed. The largest number and volume of dead trees was caused by complex (multiple causes) dieback in the overstorey (0,75 N/ha, 2,35 m3/ha), and the smallest (0,17 N/ha, 0,02 m3/ha) by dieback of supressed trees. No significant differences were determined regarding the timing of tree death for different causes of mortality. Climatic parameters (drought, air temperature, PET) and structural parameters of the stands (tree DBH, social position, crown diameter, shading, physiological maturity) as well as plot inclination were found to be the factors of a significant influence on the mortality of silver fir trees.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distribution of 137Cs and 40K in the tissue of silver fir trees (Abies alba Mill.) from Lika (Croatia)","authors":"M. Popijač","doi":"10.31298/sl.145.7-8.2","DOIUrl":"https://doi.org/10.31298/sl.145.7-8.2","url":null,"abstract":"The research on activities of 137Cs and 40K, which was conducted on the silver fir (Abies alba Mill.) from Lika has included sampling of the trees in the field (rings of the bole from three different heights separated into bark, growth rings, roots, needles, shoots, and the soil surrounding the cut down trees), laboratory analysis of samples using the gamma-ray spectrometry and the statistical analysis of the collected data. The radial and vertical distribution of cesium (137Cs) in trees was investigated. 137Cs has contaminated forest ecosystems by remote atmospheric transport and radioactive precipitation as a result of nuclear test including the nuclear accident in Chernobyl. On a longer time scale, the variability of the 137Cs distribution determined in the organisms of the silver fir depended on the half-life, while the seasonal dynamics were influenced by the degree of physiological activity and the characteristics and functions of plant tissues. The highest activity of 137Cs was determined in the bark and the physiologically most active parts of the silver fir (shoots and needles). The highest activity concentration of the 137Cs in the growth rings was measured in the lowest parts of the silver fir trees. This research contributed to understanding the behavior of 137Cs, which entered the organisms of dominant tree species in the forest ecosystem, as well as its distribution in time and space.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeliranje debljine kore bukve (Fagus sylvatica L.)","authors":"A. Lojo, J. Musić, B. Balić, A. Avdagić, V. Halilović, A. Ibrahimspahić, Jelena Knežević","doi":"10.31298/sl.145.5-6.3","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.3","url":null,"abstract":"Debljina kore i njen udio u obujmu oblog drva predstavljaju bitne značajke u tehnološkom procesu pridobivanja drva, posebno u fazi preuzimanja drva. S obzirom da je itekako važno raspolagati s relativno točnim podacima ovih značajki kore za pojedine vrste drveća, osnovni cilj ovoga rada je istražiti navedene značajke kore bukve. Istraživanje je provedeno na području Kantona 10, a obuhvatilo je 678 stabla bukve od 10 do 85 cm promjera na prsnoj visini i od 5 do 40 m visine. Mjerenje srednjeg promjera i debljine kore obavljeno je metodom sekcioniranja, a ukupno je izmjereno 6.403 promjera i debljina kore ili 9,4 mjerenja po jednom stablu u prosjeku. Rezultati su pokazali sljedeće: a) povećanjem srednjeg promjera oblog drva dvostruka debljina kore povećava se od 6,05 mm (debljinski razred 12,5 cm) do 20,69 mm (debljinski razred 82,5 cm); b) povećanjem srednjeg promjera oblog drva udio se kore u obujmu eksponencijalno smanjuje od 9,44% (debljinski razred 12,5 cm) do 4,95% (debljinski razred 82,5 cm). ­Utvrđene razlike u komparaciji s drugim autorima koji su istraživali ove značajke kore bukve, ukazuju na važnost nastavka istraživanja i na drugim područjima u BiH. Na taj način bi se dobili pouzdaniji rezultati koji bi bili primjenjivi za cijelu državu ili parcijalno za pojedine njene dijelove, ako se razlika između područja pokaže statistički ­značajnom. Dobiveni rezultati predstavljaju nezaobilaznu polaznu osnovu za izradu tablica kore bukve i novog ­pravilnika o načinu izmjere oblog drva i utvrđivanja količina.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49438009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the effects of some watershed characteristics on water and suspended sediment yield in agricultural and forest dominated watersheds","authors":"Tark Çtgez, Refik Karagül, M. Özcan","doi":"10.31298/sl.145.5-6.4","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.4","url":null,"abstract":"Topography, geological structure and land use play a determinative role in the streamflow and total suspended sediment yield of watersheds having similar climate, soil and vegetation characteristics. In order to facilitate sustainable water resource management and effective land use planning, there is an increasing need for research investigating the effects of these factors. This study was carried out in forested and agricultural dominated subwatersheds of the Big Melen watershed in the Western Black Sea Region of Turkey. Hazelnut plantations are grown on most of the agricultural areas in both watersheds. The forested watershed has a steep topography and its geological structure consists of sandstone-mudstone and sedimentary rock. The agricultural watershed area is larger and unlike the forested watershed, there is argillaceous limestone in its geological structure. The precipitation, streamflow and total suspended sediment yield in the watersheds were measured for two years. The total precipitation of the study area over the two years was 2217.3 mm. The water yield of the forested watershed was 867.6 mm, while that of the agricultural watershed was 654.9 mm. In the two years, the total suspended sediment transported from the forested watershed was 19.51 t ha-1 and from the agricultural watershed 7.70 t ha-1. However, except for the high values measured after an extreme rainfall event, the unit surface suspended sediment yield of the agricultural watershed was found to be higher than that of the forested watershed. These findings showed that watershed characteristics such as slope, geological structure and rainfall intensity may be more effective on the streamflow and total suspended sediment yield of the watersheds than land use.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47716078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Granični nagib kretnosti skidera s vitlom temeljem vučne značajke vozila","authors":"Tomislav Poršinsky, Vitomir Kajgana, Željko Tomašić, Andreja Đuka","doi":"10.31298/sl.145.5-6.1","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.1","url":null,"abstract":"Na osnovi poznavanja dimenzijskih značajki skidera s vitlom (osnovne dimenzije, masa vozila, položaj točke težišta), razvijen je model procjene kretnosti skidera za privlačenje drva uz nagib terena na siguran, djelotvoran i okolišno prihvatljiv način. Model je zasnovan na graničnom nagibu kretnosti skidera temeljem vučne značajke vozila, koji povezuje dva istraživačka pristupa, 1) vozilo – teren (raspodjela sila ovisno nagibu i vučenom teretu) te 2) kotač – tlo (procjena vučnih značajki skidera temeljem indeksa kotača), uz poštivanje niza ograničenja proisteklih iz prethodnih istraživanja: i) rasterećenja prednje osovine vozila, ii) preopterećenja stražnje osovine vozila, iii) najmanje uzdužne stabilnosti skidera, iv) najmanje nosivosti šumskog tla te v) dopuštenog opterećenja pneumatika.\u0000Rezultati simulacijskog modeliranja procjene kretnosti skidera s vitlom Ecotrac 55V opremljenoga pneumaticima 12.4-24 pri privlačenju drva uz nagib terena, značajno se razlikuju s obzirom na uvjete nosivosti podloge te masu vučenih tereta. Kod manjih tereta, mase do 1 tone, kretnost skidera određuju kriteriji/ograničenja graničnoga nagiba kretnosti vozila (vučna značajka) i okolišne pogodnosti (najmanja nosivost podloge). Porastom težine tereta, osim nosivosti šumskog tla, odlučujući ograničavajući čimbenik kretnosti postaje odnos opterećenja prednje i stražnje osovine vozila (>1 : 3,5), koji ograničava kretnost skidera na terene nagiba <33 % kod tereta od 1,5 tone, tj. <20 % kod tereta od 2 tone. Kod tereta od 2,5 tone, na kretnost skidera, utječu kriteriji najvećeg dopuštenog opterećenja stražnje osovine skidera na nagibima <7 %.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How mycorrhizas can help forests to cope with ongoing climate change?","authors":"Marina Milović, M. Kebert, S. Orlović","doi":"10.31298/sl.145.5-6.7","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.7","url":null,"abstract":"The ongoing climate change have multi-faceted effects not only on metabolism of plants, but also on the soil properties and mycorrhizal fungal community. Under climate change the stability of the entire forest ecosystems and the carbon balance depend to a large degree on the interactions between trees and mycorrhizal fungi. The main drivers of climate change are CO2 enrichment, temperature rise, altered precipitation patterns, increased N deposition, soil acidification and pollutants, ecosystem fragmentation and habitat loss, and biotic invasion. These drivers can impact mycorrhizal community directly and indirectly. We discussed the influence of each driver on mycorrhizal community and outlined how mycorrhizas play an important role in the resilience and recovery of forest ecosystems under climate change, by mitigating detrimental effects of CO2 enrichment, temperature rise, drought, lack of nutrients, soil acidification, pollutants, pests, and diseases. Conservation of the overall biodiversity in forest ecosystems as well as providing the most favourable conditions for the development of mycorrhizae can contribute to increasing the resilience of forest ecosystems to climate change.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"2 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prvi nalaz azijske pamučne štitaste uši Takahashia japonica u Hrvatskoj","authors":"Nediljko Landeka, Mirela Uzelac, Danijela Poljuha, Barbara Sladonja","doi":"10.31298/sl.145.5-6.5","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.5","url":null,"abstract":"Azijska pamučna štitasta uš Takahashia japonica Cockerell (Hemiptera, Coccomorpha, Coccidae), vrsta je porijeklom iz Japana. U Europi je prvi put pronađena 2017. godine u Italiji te 2018. godine u Velikoj Britaniji. U ovom radu dajemo pregled prvog nalaza vrste T. japonica u Hrvatskoj. Prvi nalaz kukca T. japonica uočen je 2019. godine u Puli (Istarska županija, Hrvatska), a vrsta je determinirana u proljeće 2020 godine. Kako bi što učinkovitije prikupili terenske podatke, pokrenuli smo kampanju po načelu „građani znanstvenici“ pod naslovom: “Traži se neobičan kukac - Takahashia japonica”. Poziv za dostavu dojava s lokacijama poslan je svim komunalnim gradskim poduzećima u Istri, javnim ustanovama zaštićenih područja, nevladinim udrugama te je podijeljen u lokalnim novinama i radio postajama. Specifična morfologija ooteka omogućila je lako prepoznavanje ove vrste i osigurala pouzdanost dojava građana. Tijekom kampanje prikupljeno je ukupno sedam dojava u širem središtu grada Pule. Najčešća biljka domaćin bila je Acer sp. i Morus alba L. od kojih su neka stabla pretrpjela značajnu defolijaciju te propadanje krošnje. S obzirom na ograničenu zarazu i relativno mali broj zaraženih stabala opravdano je pokušati provesti potpuno uklanjanje ove vrste. Postupci mjera ranog otkrivanja i brzog iskorjenjivanja invazivnih štetočina u skladu su s Pravilnikom br. 1143/2014 Europskog parlamenta i Vijeća te Europske i Mediteranske Organizacije za Zaštitu Bilja (EPPO). Aktivnosti iskorjenjivanja dogovorene su s gradskim komunalnim poduzećem Herculanea d.o.o. koji je odgovoran za hortikulturu i zaštitu biljaka u gradu Puli.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fotosintetski odgovor bukovih klijanaca na suboptimalnu ishranjenost s mineralnim hranivima","authors":"Krunoslav Sever, Dimitrije Damir Sviličić, Tomislav Karažija, Boris Lazarević, Željko Škvorc","doi":"10.31298/sl.145.5-6.2","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.2","url":null,"abstract":"U ovom radu prikazani su rezultati izmjere parametara koji opisuju fotosintetsku aktivnost bukovih klijanaca pod utjecajem suboptimalne ishranjenosti s mineralnim hranivima. Cilj rada bio je približiti ovu problematiku šumarskoj praksi kroz raspravu dobivenih rezultata u kontekstu dosadašnjih spoznaja o utjecaju mineralne ishrane na fotosintetski proces šumskoga drveća. U rano proljeće 2019. godine bukovi klijanci porijeklom iz jedne prirodne mješovite sastojine hrasta kitnjaka i obične bukve presađeni su u sterilni supstrat (agroperlit). Nakon presadnje redovito su zalijevani (tretirani) kompletnom hranivom otopinom (KO tretman), odnosno hranivim otopinama u kojima su izostavljeni dušik (–N tretman), fosfor (–P tretman), magnezij (–Mg tretman) ili željezo (–Fe tretman). Na šest klijanaca unutar svakog od pet prethodno opisanih tretmana tijekom vegetacijskog razdoblja 2019. godine redovito su mjereni sljedeći parametri: stopa fotosinteze (A), provodljivost puči (gs), intercelularna koncentracija CO2 (ci), indeks relativnog sadržaja klorofila u lišću (CCI) te indeks fotosintetske učinkovitosti (PIABS). Svi parametri bili su lošiji kod klijanaca iz –N, –P i –Mg tretmana u odnosu na klijance iz KO tretmana. Takav rezultat vjerojatno proizlazi iz fizioloških funkcija N, P i Mg koji sudjeluju u građi proteina i enzima, prometu i skladištenju energije te građi klorofila, što je sve skupa neophodno za uredno funkcioniranje cjelokupnog fotosintetskog procesa. Unatoč važnoj ulozi Fe u gotovo svim životnim procesima biljaka pa tako i fotosintezi svi mjereni parametri kod klijanaca iz –Fe i KO tretmana bili su podjednaki. Međutim, za razliku od N, P i Mg koji pripadaju skupini makrohraniva, Fe pripada skupini mikrohraniva, čije su koncentracije u biljnom tkivu relativno niske. Prema tome, moguće je pretpostaviti da su istraživani klijanci iz tla prirodne sastojine i/ili iz rezervi u sjemenu tijekom početne faze svoga razvoja uspjeli usvojiti i/ili mobilizirati dovoljnu količinu Fe koja im je bila dostatna za normalno funkcioniranje tijekom cijelog vegetacijskog razdoblja, bez obzira na kasniju primjenu tretmana. S obzirom na ovakav rezultat, inicijalno praćenje parametara fotosintetske aktivnosti bit će nastavljeno tijekom sljedećih nekoliko vegetacijskih razdoblja. U tom periodu planira se započeti s praćenjem dinamike vegetativnoga rasta, fenologije listanja i razvoja vizualnih simptoma pri suboptimalnoj ishranjenosti obične bukve s mineralnim hranivima s ciljem dodatnog približavanja ove problematike šumarskoj praksi.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"State border fences as a threat to habitat connectivity","authors":"T. Safner, A. Gračanin, Ivan Gligora, B. Pokorny, Katarina Flajšman, Marko Apollonio, N. Šprem","doi":"10.31298/sl.145.5-6.6","DOIUrl":"https://doi.org/10.31298/sl.145.5-6.6","url":null,"abstract":"The conservation value of transboundary management of wildlife populations in Europe, that marked end of the 20th and the beginning of the 21th century, has come under huge pressure since 2015 especially in the South-eastern ­Europe due to border fences construction in response to large influxes of refugees/migrants. The primary aim of this study was to present data on the direct impacts of the long fence on wildlife (e.g. fence-related mortality) across the Hungary–Croatia border. We collected data on fence-related animal mortality along 136 km of the fence in the first 28 months after its construction. In total, 64 ungulates (38 red deer, 23 roe deer, and three wild boar) were found ­entangled in or deceased due to the razor wire fence. In addition, we present direct (photographic) evidence of newly recorded behaviour of red deer, as they gather in huge herds attempting to cross the border fence between Hungary and Croatia. Short term effect of the border fence is reflected in direct animal mortality, and as obstruction to the movement and behaviour of animals. In the case that current fences will remain or continue to expand along the northern boundary of South-eastern Europe, it is likely that fragmented wildlife populations in the region will suffer from negative effects of genetic subdivision such as loss of alleles and reduced heterozygosity that can cause important long-term damage to their vitality.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69356797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preliminary results on narrow-leaved ash (Fraxinus angustifolia Vahl) and green ash (Fraxinus pennsylvanica Marshall) seed entomofauna in Croatia","authors":"J. Orlović, Ida Bulovec, B. Hrašovec, D. Diminić, Marin Biliškov, Josip Skejo, Damjan Franjević, Milivoj Franjević","doi":"10.31298/SL.145.3-4.4","DOIUrl":"https://doi.org/10.31298/SL.145.3-4.4","url":null,"abstract":"Native narrow-leaved ash (Fraxinus angustifolia Vahl) and introduced green ash (F. pennsylvanica Marshall) are two most common ash (Fraxinus spp.) species in Croatian lowland forests, taking a significant place in these ecosystems. In the recent past it has been observed that narrow-leaved ash seed yields have reduced, emphasising the importance of good health status of those collected, as they are used for seedling production and consecutive regeneration of forest stands or afforestation. Given that insects could be an important factor affecting ash seed health status, the aim of this research was to gain insight into the species being present and their frequency in the ash seeds. In total 2.500 narrow-leaved ash and 1.000 green ash seeds from seven different locations were screened for insect presence. Analysed seeds were categorized as undamaged, insect damaged or empty, and observed insect specimens were identified by morphological and molecular genetic analysis. Green ash seeds revealed higher insect infestation in comparison with native ash species, with weevil Lygniodes bischoffii being the most numerous pest found. Narrow-leaved ash seeds were mostly occupied by the native weevil species, L. enucleator. Besides these pests, larval, pupal, and adult stages of parasitoid wasps (Hymenoptera) and larval stage of the seed eating moth Pseudargyrotoza conwagana (Lepidoptera) were found in both ash species. However, given that pests detected in this study prefer urban areas or were present in a very small number of seeds, where they were often followed by parasitoids, it can be concluded that insects currently do not have a significant negative impact on the reproduction of narrow-leaved ash and green ash in forest stands.","PeriodicalId":49464,"journal":{"name":"Sumarski List","volume":"29 1","pages":"147-154"},"PeriodicalIF":0.5,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73533552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}