Petr Pokorný, Kristýna Hošková, Jindřich Prach, P. Šída, P. Bednář
{"title":"Nová paleobotanická data prokazují původní status modřínu opadavého (Larix decidua Mill.) v severních Čechách","authors":"Petr Pokorný, Kristýna Hošková, Jindřich Prach, P. Šída, P. Bednář","doi":"10.59269/zlv/2023/4/707","DOIUrl":"https://doi.org/10.59269/zlv/2023/4/707","url":null,"abstract":"Using pollen analysis, phytolith analysis and radiocarbon dating of newly discovered sedimentary archives, here we prove the native status of European larch (Larix decidua Mill.) in two sandstone rocky areas of north Bohemia (Czech Republic). At the end of the Last Ice Age and at the beginning of the Holocene, European larch was relatively common in Central Europe. In most critical period of the Middle Holocene, it demonstrably retreated to exposed rocky habitats, but did not become completely extinct. In the form of relict populations, it survived locally until the modern era, when non-native larch types were artificially introduced into managed forest stands. Our findings call for a radical rethinking of the approach to larch by both foresters and nature conservation authorities. In the future, it is primarily necessary to search for and protect the remnants of its original gene pool.","PeriodicalId":515466,"journal":{"name":"Zprávy lesnického výzkumu","volume":"77 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139386216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ma Fulin, Jaromír Dostál, Petr Novotný, Jiří Čáp, František Beran
{"title":"Vyhodnocení růstu proveniencí borovice lesní v Čechách","authors":"Ma Fulin, Jaromír Dostál, Petr Novotný, Jiří Čáp, František Beran","doi":"10.59269/zlv/2023/4/710","DOIUrl":"https://doi.org/10.59269/zlv/2023/4/710","url":null,"abstract":"This study examines the variability of Scots pine provenances in four Czech research plots from the same series of experiments conducted in 1972. 121 provenances from the Czech Republic and Slovakia were evaluated in terms of growth and morphological characteristics. The quantitative traits measured for each tree were its tree height and DBH. The stem volume was also calculated according to the volume equation (Petráš, Pajtík 1991). Among the qualitative traits, stem form, health status, branch thickness in the crown, stem damage, stem twist, stem clearing, stem cross-section, and taper were evaluated. The large variance in growth characteristics of provenances does not specify the suitability of a particular reproductive material for a given area. Slovak provenances even from a relatively small land unit (Šaštín area) planted in the same research plot have different quantitative and qualitative traits. However, the evaluation of the test plots of Scots pine in Bohemia showed impaired growth performance of most of the Slovak provenances. Therefore, it is necessary to test more provenances from a larger area of the Scots pine range to obtain the possibility of using a wider range of reproductive material of the tree in our conditions. In the long term, further provenance trials with new reproductive material are needed to assess suitability under changing natural conditions.","PeriodicalId":515466,"journal":{"name":"Zprávy lesnického výzkumu","volume":"74 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139386279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
František Havránek, Jan Cukor, Boris Hučko, Lucie Hambalková
{"title":"Zvýšení biologické kvality jedinců tetřívka obecného (Lyrurus tetrix) připravovaných pro záchranné programy","authors":"František Havránek, Jan Cukor, Boris Hučko, Lucie Hambalková","doi":"10.59269/zlv/2023/4/712","DOIUrl":"https://doi.org/10.59269/zlv/2023/4/712","url":null,"abstract":"In the middle of the twentieth century, a downward trend in grouse numbers in Central Europe became evident. Along with the decrease in the number of birds, the fragmentation and subsequent shrinking of the range of forest fowls such as the capercaillie (Tetrao urogallus), the black grouse (Lyrurus tetrix) and the hazel grouse (Bonasa bonasia) began to manifest itself. This trend continues until now and the occurrence of these species in the Czech Republic and Central Europe in general is threatened. One of the segments of saving the species in situ is the support of the population by artificially reared or translocated individuals. First of all, however, it is necessary to solve the problem of the biological quality of the individuals used, which largely depends on the state of their digestive tract, the quality of the food and the development of behavioral patterns necessary for the intake of natural food in the wild. Therefore, analyzes were made of the food supply of black grouse in the wild and potential feed components for black grouse in aviary breeding (Wendes method – dry matter, N substances, fats, ash, fibre, BNLV, expressed in %). Subsequently, on the basis of the analysis results, a recipe of a feed mixture of seeds, dried shoots, fruits of woody plants and dried insects was prepared, suitable for rearing and preparing grouse birds for adaptation to natural conditions. It presents a diversified food consisting of six types of cereals, two types of legumes, four types of oil seeds and another four types of seeds, fruits and dried shoots. The feed mixture of natural plant components was supplemented with an animal component – dried developmental stages of mealworm (Tenebrio molitor).","PeriodicalId":515466,"journal":{"name":"Zprávy lesnického výzkumu","volume":"7 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139387346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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