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Tytuł:
Stand structure and natural regeneration of Taxus baccata at "Stiwollgraben" in Austria
Autorzy:
Dhar, A
Ruprecht, H.
Klumpp, R.
Vacik, H.
Powiązania:
https://bibliotekanauki.pl/articles/41025.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
English yew
Taxus baccata
yew
tree species
Austria
gene conservation
natural regeneration forest
stand structure
population structure
vitality
yew decline
Opis:
English yew (Taxus baccata L.) is a rare tree species in Austria and gene conservation forests reserves are used to maintain English yew populations by silvicultural treatments. This paper describes the current situation of an English yew population at “Stiwollgraben”in Austria with regard to stand structure, vitality and natural regeneration. The area is one of the most important sites in Austria as it consists of 2236 yews.The vitality condition of the yew is very good, and more than 79% of the yews have been assessed as very vital to vital. The potentiality for natural regeneration (13019 one-year seedlings ha–1) is very high, but not all height classes are represented. This indicates a high survival ability of English yew at this site. Three different treatment strategies are described to maintain the yew population. The future effects of these treatments are discussed in the light of the environmental requirements of English yew.
Źródło:
Dendrobiology; 2006, 56; 19-26
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of initial light intensity and deer browsing on Taxus baccata saplings: a six years field study
Autorzy:
Iszkulo, G.
Nowak-Dyjeta, K.
Sekiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/957073.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
light intensity
deer
browsing
Taxus baccata
sapling
yew
European yew
rare species
endangered plant
Opis:
European yew (Taxus baccata L.) is a rare species, but is the focus of great interest because of the species recovery attempts and its use in medicine. The aim of this study was to determine the optimum conditions for the development of the young generation of this species. Four-year old yew seedlings were grown under artificial light reduction: 2, 8, and 30%, as well as in full light. The seedlings were then planted in natural conditions in fenced and unfenced areas. The results of six years field studies indicated that the greatest impact on survival was shown by the light conditions from the period before planting under the canopy of trees. Seedlings from the 2 and 8% of light showed the greatest mortality. The reason was the sudden change in light conditions, because at the time of planting (early spring), there was no reduction of light under deciduous trees. Almost all of the unfenced yew seedlings were grazed by deer, but yew survival in the unfenced group was surprisingly high despite the permanent grazing. This was explained by the high resistance of yew to cutting and the protection of seedlings by a dense layer of Rubus. The results indicated that yew trees require protection against animals for normal development, even if animals have not previously had contact with Taxus and that yew seedlings are very sensitive to sudden changes in light. Both conclusions can be applied in the development of natural and artificial regeneration of European yew and other endangered plants.
Źródło:
Dendrobiology; 2014, 71; 93-99
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fungi colonizing shoots of common yew [Taxus baccata L.] in the Jagiellonian University Botanic Garden in Cracow
Grzyby zasiedlajace pedy cisa pospolitego [Taxus baccata L.] w Ogrodzie Botanicznym UJ w Krakowie
Autorzy:
Mirski, W
Powiązania:
https://bibliotekanauki.pl/articles/26767.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
needle
Taxus baccata
common yew
branch
disease symptom
fungi
yew
plant
Botanical Garden in Krakow
Opis:
The aim of the investigations was determination the reasons of dying down of needles and branches of common yew (Taxus baccata L.) in the park collection of Botanic Garden of Jagiellonian University in Cracow. The disease changes of infectious nature were observed on the examined plants’ parts. The changes’appearance, its location and extent were described in details. At fi rst the spots were brown colour with distinct hem. Then the needle and branch tissues were dying down. From end of May to July mass falling down of infesteted needles was observed. Mycological analysis of diseased tissues showed 34 fungi species. To the dominant species belonged: Alternaria alternata, Colletotrichum gloeosporioides, Fusarium spp., Pestalotiopsis guepinii, Phomopsis juniperivora and Zythiostroma pinastri. Common yew pathogens: Phomopsis juniperivora and Sclerophoma pityophila were found among the isolated fungi.
Badania miały na celu określenie przyczyn zamierania igieł i gałązek cisa pospolitego (Taxus baccata L.) w kolekcji Ogrodu Botanicznego UJ w Krakowie. Na badanych częściach roślin występowały zmiany chorobowe o charakterze infekcyjnym. Opisywano szczegółowo ich wygląd, zlokalizowanie i zasięg. Początkowo były to plamy brązowawo zabarwione z wyraźną obwódką. Następnie tkanki igieł i gałązek zamierały. Obserwowano też masowe opadanie porażonych igieł w okresie od końca maja do lipca. Przeprowadzona analiza mikologiczna chorych tkanek wykazała w nich obecność 34 gatunków grzybów, wśród których dominowały: Alternaria alternata, Colletotrichum gloeosporioides, Fusarium spp., Pestalotiopsis guepinii, Phomopsis juniperivora oraz Zythiostroma pinastri. W populacji wyizolowanych grzybów stwierdzono obecność patogenów cisa pospolitego, tj.: Phomopsis juniperivora i Sclerophoma pityophila.
Źródło:
Acta Agrobotanica; 2008, 61, 1
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Yew Cross from Szczuczyn – a Symbol of Life and Death or an Unusual Memento?
Autorzy:
Michalik, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/38611064.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Rzeszowski. Instytut Archeologii Uniwersytetu Rzeszowskiego. Muzeum Okręgowe w Rzeszowie
Tematy:
Szczuczyn
crypts
yew
piars
wood
cross
Opis:
Archaeological research in the crypts of the Church of the Holy Name of the Virgin Mary in Szczuczyn has been carried out since 2012. Many years of research have made it possible to identify some of the buried people, including the Piarists who served as the hosts of the church. One of the monks identified was Stanislaw Marszycki, who took the name Simeon of St Joseph after his monastic vows. Identification of the Piarist was possible thanks to the information on the coffin. On the deceased’s vestments rested a wooden crucifix, which can be interpreted as part of the deceased’s individual equipment.The crucifix was subjected to wood species identification using a microscope with transmitted light. This made it possible to determine that it was made from the wood of the common yew tree (Taxus baccata L.). Yew wood is a valuable material and was used to make both large boatbuilding components, furniture, and weapons, and was also readily used in 18th-century gardens. The yew was also a tree around which there was a great deal of superstition. Because of its toxicity and longevity, it was treated as both a tree of death and life. The cross from the monk’s coffin, according to superstition, might have guarded the deceased against evil, been an individual object with which the deceased was associated, or perhaps was chosen because yew wood was eminently polishable and with a beautiful colouration.
Źródło:
Analecta Archaeologica Ressoviensia; 2022, 17; 71-79
2084-4409
Pojawia się w:
Analecta Archaeologica Ressoviensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Opracowanie technologii przetwarzania archiwalnych materiałów fotogrametrycznych do badań zmienności krajobrazu na przykładzie Słowińskiego Parku Narodowego
Technology of processing archival aerial phothos for changes analysis of Słowinski National Park Landscape
Autorzy:
Michałowska, K.
Głowienka, E.
Mikrut, S.
Powiązania:
https://bibliotekanauki.pl/articles/129978.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
photogrammetry
structure
forest stand
nature reserve
yew
Opis:
W artykule przedstawiono technologie wykonania aerotriangulacji na bazie archiwalnych zdjęć lotniczych z lat 1951, 1964, 1975 i 1984, wykonanych w różnych skalach dla terenu Słowińskiego Parku Narodowego. Zdjęcia, w postaci diapozytywów, pozyskano z zasobów Zarządu Geografii Wojskowej w Warszawie. Jakość zdjęć w poszczególnych rocznikach była bardzo zróżnicowana. W celu podniesienia jakości opracowań fotogrametrycznych oraz możliwości fotointerpretacyjnych zastosowano metody przetwarzania obrazów cyfrowych. W pierwszym etapie przetwarzania zdjęć wykonano orientacje wewnętrzna i wzajemna zdjęć dla wszystkich bloków. Ze względu na specyfikę terenów SPN pomiar punktów wiążących był w znacznym stopniu utrudniony (ponad 60% opracowywanego bloku zdjęć zajmują ruchome wydmy, wody Bałtyku oraz jezior Łebsko, Gardno). Z uwagi na brak możliwości wyrównania bloku aerotriangulacji w systemie DEPHOS, proces ten wykonano w środowisku ImageStation. Konieczne było transformowanie danych z formatu Dephos’a (pikselowe współrzędne punktów wiążących na poszczególnych zdjęciach) do formatu ImageStation. Transformacji współrzędnych dokonano przy pomocy programu TRANSPOL. Jakość zdjęć miała bezpośredni wpływ na dokładność pomiarów zarówno punktów wiążących jak i fotopunktów, a także interpretacje szczegółów terenowych w późniejszym procesie generowania Numerycznego Modelu Terenu (NMT), który był podstawa analiz przestrzennoczasowych krajobrazu Słowińskiego Parku cechującego się wyjątkowo silna dynamika podłoża i roślinności. Prace były realizowane w ramach projektu KBN Nr N304 077 31/3060 „Modelowanie przestrzenne zmian wybranych elementów środowiska Słowińskiego Parku Narodowego”.
The paper presents technology of aerotriangulation on the basis of multitemporal (1951, 1964, 1975, and 1984), aerial photos of the Słowinski National Park in various scale Those photos, as negatives, were obtained from the resources of military geographic authorities Military Geography Management in Warsaw. The quality of photos in particular year was highly diversified. Therefore, methods of digital image processing, such as filtration, "image reinforcement", or preliminary tonal balancing were applied to improve the quality of those photogrammetric materials, and to improve the possibilities of their photointerpretation. The DEPHOS photogrammetric station was used to perform measurements, necessary for adjustment of the aerotriangulation block. In the first stage, internal and relative orientations were performed for all photo blocks. Due to the specificity of the Park area, the measurement of binding points was substantially hindered (more than 70% of the photo block being processed are occupied by migrating dunes, the Baltic Sea, and the Łebsko and the Gardno lakes). In view of the lack of the possibility to balance the aerotriangulation block under the DEPHOS system, the process was performed in ImageStation environment. It was necessary to transform data from the Dephos format (pixel coordinates of binding points on particular photos) to the ImageStation format. The quality of photos directly affected the accuracy of measurements, both in relation to binding points, and to photopoints, as well as the interpretation of terrain details in the later process of DTM generation. The said research works were conducted under the research project No. N304 077 31/3060 [financed by the State Committee for Scientific Research and] titled "Spatial Modelling of Changes in Selected Elements of the Słowinski National Park. " DTM was the basis for spatial and time analyses of the Słowinski National Park landscape, which is marked by its exceptionally strong dynamics of substrate and vegetation.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2007, 17b; 495-504
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dendroecological differences between Taxus baccata males and females in comparison with monoecious Abies alba
Autorzy:
Iszkulo, G.
Jasinska, A.K.
Sobierajska, K.
Powiązania:
https://bibliotekanauki.pl/articles/41698.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
dendrology
ecological differentiation
Taxus baccata
male
female
Abies alba
reproductive effort
dendrochronology
European yew
yew
silver fir
fir
Opis:
Taxus baccata L. is a rare and endangered dioecious species in Europe. Species of this mating system are considered to be the most vulnerable to extinction. It is believed that one reason for this state may be the uneven reproductive effort and different habitat requirements of the two sexes. Silver fir and European yew have very similar ecological requirements, but fir is a monoecious species. The aim of this study was to compare the growth rate andthe effect of precipitation andtemperature on the annual tree-ring width of silver fir and both sexes of European yew. The study site was the Knyazhdvir reserve in western Ukraine, located near the limit of the geographical range of both species. Knyazhdvir reserve is the site of one of the last yew populations in Europe with a large number of individuals (about 15,000 individuals above 1.3 m height) growing alongside fir.Woodsamples were taken from 15 male and15 female specimens of T. baccata andfrom 15 specimens of A. alba and were subjected to a standard dendrochronological procedure. The results showed high positive correlation between the temperatures in February andMarch andthe tree-ring width in the studied species and genders. The response of annual tree-ring width to the examined climatic factors was relatively similar in yew andfir. However slight differences were foundbetween males andfemales of T. baccata. The growth rate decreased more rapidly in females compared to males, probably following sexual maturation. Precipitation in April hada positive effect on firs andfemale yews, but not on male yews. This confirms earlier reports of the requirement of female specimens of dioecious species for a higher humidity than male individuals.
Źródło:
Dendrobiology; 2011, 65
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura populacji cisa pospolitego Taxus baccata L. w Wysokiej Lelowskiej
The structure of population the common yew Taxus baccata L. in Wysoka Lelowska
Autorzy:
Majchrzak, B.
Tomala, R.
Powiązania:
https://bibliotekanauki.pl/articles/410375.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
cis pospolity
struktura populacji
common yew
population structure
Opis:
Badania populacji cisa przeprowadzono w latach 2010‒2011 w Wysokiej Lelowskiej niedaleko wsi Żarki Letnisko i Przybynów. Wyznaczono 4 poletka badawcze o wymiarach 10 × 20 m. Dla każdego poletka oznaczono wszystkie gatunki roślin, sporządzono listę florystyczną oraz wykonano zdjęcie fitosocjologiczne w aspekcie wiosennym i letnim. Na tej podstawie określono zbiorowisko roślinne jako zdegradowaną postać Fraxino-Alnetum. Populacja cisa składa się z 71 osobników, u których wykonano pomiar wysokości i pierśnicy. Pierśnica cisów zawiera się w przedziale 1‒29 cm. Średnia grubość wynosi 7.27 cm, a średnia wysokość wszystkich osobników to 6.98 m. Najwyższy cis mierzy 13.3 m. Większość cisów jest rozgałęziona (59%) i posiada najczęściej 5, 3 lub 2 pnie. 38% populacji jest jednopniowa. 2 osobniki (3%) mają formę krzewiastą. Średnie zagęszczenie cisów na wszystkich powierzchniach badawczych wynosi 8.8/100 m2. Struktura płciowa została określona dla 97% populacji: 62% to osobniki żeńskie, a 33% męskie. Pomimo przewagi liczby osobników żeńskich w Wysokiej Lelowskiej, populacja nie odnawia się. Odnaleziono tylko 6 siewek o wysokości do 10 cm. Powodem braku odnawiania się cisów może być nadmiernie rozwinięte runo. Z uwagi na dużą liczbę osobników cisa oraz ich dobrą kondycję, badana populacja powinna zostać objęta ochroną rezerwatową.
The research of yew population was carried out in the years 2010‒2011 in Wysoka Lelowska near villages Żarki Letnisko and Przybynów. 4 research plots were established, 10 × 20 meters in dimension. For each research plot, all species was marked and the floristic list was made. The phytosociologial analysis was made in terms of spring and summer. On this basis was stated that the plant community is a degenerated form of Fraxino-Alnetum. The yew population consist of 71 specimens were measured in terms of height and breast height. Breast height of yews ranged between 1 and 29 cm. The average diameter is 7.27 cm and the average height of all specimens is 6.98 m. The tallest yew has reached 13.3 m in height. Most of the yews are branched (59%) and had 5, 3, 2 trunks. 38% population have a monopodium. Two specimens (3%) had a shrubby form. The average density of yews on all plots is 8.8/100 m2. Sex identity was determined in 97% of yews population: 62% were male and 33% female specimens. Despite, that the presence of the female specimens population in Wysoka Lelowska is not regeneration. The seedlings were found in the amount 6 of up to 10 cm. Maybe for reason the yews are not regeneration is over-developed undergrowth. Due to the large number of yews and good condition this population should be protected in nature reserve.
Źródło:
Chemistry, Environment, Biotechnology; 2015, 18; 19-30
2083-7097
Pojawia się w:
Chemistry, Environment, Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dynamics of the Taxus baccata L. population and the factors affecting its regeneration in the Jasień Nature Reserve
Autorzy:
Bujoczek, L.
Bujoczek, M.
Powiązania:
https://bibliotekanauki.pl/articles/2078292.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
English yew
seedlings
saplings
diameter increment
diameter distribution
mortality
Opis:
Taxus baccata L. is a relict plant and has a scattered distribution in the entire species range. Yew regeneration may be affected by moisture conditions and tree stand characteristics – variables which change over time and which have not been sufficiently researched to date. The present study determined the size structure of yews, causes of yew mortality, the effects of tree stand characteristics and habitat conditions on yew diameter increment at breast height, the density of yew seedlings and saplings, and the likelihood of yew seedling occurrence. The study was conducted in central Poland, on 22 permanent sampling plots. The paper presents data col- lected in 2017 with reference to previous studies on these plots from 2001 and 2007. Stand volume, basal area, number of trees, canopy cover, and type of forest site were established for the tree layer. Saplings and shrubs were counted. Finally, the parameters determined for yew seedlings included density and percentage of individuals damaged by browsing, as well as soil moisture and percentage cover of herbaceous vegetation in the nearest neighborhood. In 2017, yew density in the tree layer was 70 individuals/ha, having increased by 15 individuals/ha over 16 years. During that period, 6.4 individuals/ha died in that layer. The predominant cause of yew mortality was wind. In the period 2007–2017, the mean diameter increment at breast height was 2.2 mm/year, and indicated a weak relationship only with tree diameter at the beginning of the studied period (R2 = 0.06). In 2017, the mean density of yew saplings and seedlings was 55 individuals/ha and 1005 individuals/ha, re- spectively. Two independent variables were found to be significant in the model of yew seedling occurrence: presence of mature yews on the sampling plot and soil moisture. The condition of the studied yew population is satisfactory, especially in the less moist areas. The number of seedlings is acceptable, but more active protection should be considered due to the scarcity of yew sap- lings. This is all the more important as seed-producing mature yews tend to die as a result of exposure to strong winds and periodic local flooding.
Źródło:
Dendrobiology; 2018, 80; 24-36
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution, protection and restoration of Taxus baccata L. in Ukraine
Autorzy:
Hnatiuk, Oleh
Mohytych, Vasyl
Sułkowska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2041507.pdf
Data publikacji:
2020
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
English yew
in situ
ex situ
conservation measure
natural regeneration
Opis:
English yew is one of the most endangered species in Europe. Due to the specificity of this species, its natural regeneration is quite difficult. The aim of the study was to present the current situation of distribution, protection and restoration of the species in Ukraine. The study presents some characteristics of largest natural and artificial yew populations in the country and their protection. In situ and ex situ yew populations are quite different, in terms of bioclimatic conditions what does not affect to the growth characteristics of the populations. In addition, the activities related to the natural and artificial renaturalisation of the yew were analysed. Thus, tending of tree stands, where the natural regeneration of yew was inventoried can be recommended but it should be planned very individually regarding requirements of the site. The introduction of yew seedlings in the conditions of the managed forest is very difficult. Despite the complication of obtaining planting material and high cost, it is important measure to preserve the species. In Ukraine are successful examples of the seed transfer of yew populations by about 450 km in North-East direction (Carpathian yew population) and 700 km in North direction (Crimean yew population). It is an evidence of high ecological plasticity of the species. Moreover, some recommendations that could be useful for increasing the popularization of this species throughout the country were given in conclusions. The wider use of yew in public areas across the country due to unique value of species and more convenient protection of young seedlings. It is worth to continue the inventory of yew locations at the national level and study the possibilities to use as local sources to conservation of this species throughout the country.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 4; 327-335
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cis pospolity (Taxus baccata L.) z Henrykowa Lubańskiego – wątpliwości co do rzeczywistego wieku najstarszego drzewa Polski
European yew (Taxus baccata L.) from Henrykow Lubański – some doubts about the real age of the oldest tree in Poland
Autorzy:
Zarzyński, Paweł
Tomusiak, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1186042.pdf
Data publikacji:
2020-02-19
Wydawca:
Polskie Towarzystwo Dendrologiczne
Tematy:
European yew
Taxus baccata
Henryków Lubański
the oldest tree in Poland
Opis:
European yew (Taxus baccata) from Henryków Lubański (Lower Silesian Province) is considered to be the oldest known tree in Poland. It is assumed that it is 1284 years old. Nevertheless, many doubts arise as to its real age because of the method used to estimate the age of the tree and the unusual shape of its trunk.
Źródło:
Rocznik Polskiego Towarzystwa Dendrologicznego; 2019, 67; 49-52
2080-4164
2300-8326
Pojawia się w:
Rocznik Polskiego Towarzystwa Dendrologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lee Kuan Yew – wizjoner niezwykły
Lee Kuan Yew – a phenomenal visionary
Autorzy:
Burski, Ksawery
Powiązania:
https://bibliotekanauki.pl/articles/441472.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Singapur
Lee Kuan Yew
polityka zagraniczna Sin-gapuru
globalizacja
polityka światowa
Opis:
The article presents the profile of Lee Kuan Yew – the founding father of modern Singapore and its prime minister from 1959 to 1990. The author outlines Lee’s background and the perspective on a changing region and on the global political economy. He presents the key insights and opinions of that grand strategist and visionary on geopolitics of East and West, globalization, economic growth, and democracy. The article offers Lee Kuan Yew’s assessment of the United States’ position as the world’s superpower, of the China’s future, India’s future, Islamic terrorism. It presents Lee’s strategic advice for dealing with China.
Źródło:
Azja-Pacyfik; 2018, XXI; 75-84
1643-692X
Pojawia się w:
Azja-Pacyfik
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postglacial migration dynamics helps to explain current scattered distribution of Taxus baccata
Autorzy:
Iszkulo, G.
Pers-Kamczyc, E.
Nalepka, D.
Rabska, M.
Walas, L.
Dering, M.
Powiązania:
https://bibliotekanauki.pl/articles/41150.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
yew
Taxus baccata
migration dynamics
endangered species
Quaternary
human impact
competition
Opis:
Taxus baccata L. has a scattered distribution and the decline of yew woodlands is observed across the entire species range. Passively protected populations in the central and northern part of their distribution are declining without human intervention. However, the establishment of new yew populations is observed in habitats that have been significantly transformed by humans. The following question need to be answered: why do yews find better in environmental conditions that have been strongly modified by humans compared to natural systems? The Quaternary history might be the key to understand the current yew situation. As suggested by palaeobotanical studies, pollen of T. baccata was observed at optima of the interglacials, but in subsequent periods, it has been displaced by that of other shade-tolerant species. Pollen diagrams indicate that after the last glaciation, the yew did not appear earlier than other shade-tolerant species and did not have the opportunity to become common in occurrence, as in previous interglacial periods. As a result, yews occur only as relict populations within environmental islands where the competition with other shade-tolerant species is low. The negative human impact on yew is well-documented, but limitations resulting from the biology of this species are also very important. T. baccata is a species whose current scattered distribution may explain the Quaternary history. Yew situation is better in artificial conditions because people reduce competition from other trees species and deer pressure. Possible positive impact of human on yew distribution in the past is also discussed. The current biological condition of this species suggests the need for active protection.
Źródło:
Dendrobiology; 2016, 76
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie archiwalnych zdjęć lotniczych do odtworzenia profilu dokumentacyjnego w rezerwacie przyrody „Cisy Staropolskie im. Leona Wyczółkowskiego” w Wierzchlesie
Use of archive aerial photographs for reconstructing documentary profile in leon Wyczolkowski Nature Reserve of the Old Polish Yews, Wierzchlas
Autorzy:
Będkowski, K.
Górski, D.
Powiązania:
https://bibliotekanauki.pl/articles/130372.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
fotogrametria
struktura
drzewostan
rezerwat
cis
photogrammetry
structure
forest stand
nature reserve
yew
Opis:
W latach 1957-1958 na terenie rezerwatu przyrody w Wierzchlesie prowadzonobbadania, których celem było ustalenie stanu poszczególnych zespołów leśnych oraz poglądowe scharakteryzowanie siedlisk pod względem udziału gatunków drzew i struktury drzewostanów. Założono powierzchnie dokumentacyjna (profil) w postaci długiego i wąskiego pasa terenu, w którego granicach pomierzono położenie oraz wymiary wszystkich drzew. Wyniki przedstawiono w postaci przekrojów poziomego i pionowego. Dla terenu rezerwatu i jego okolic istnieją zdjęcia lotnicze wykonane m. in. w 1964 r. Postanowiono sprawdzić, czy materiały te można wykorzystać do przeprowadzenia analizy struktury drzewostanu na terenie całego rezerwatu. Pomiary wykonano za pomocą cyfrowej stacji fotogrametrycznej VSD-AGH. Stwierdzono dużą zgodność rozmieszczenia drzew na powierzchni dokumentacyjnej oraz, co szczególnie istotne, pionowych profili drzewostanów. Wykazano, że istnieje możliwość dokonania wiarygodnej, retrospektywnej oceny przebiegu naturalnych procesów na całym obszarze tego wyjątkowego obiektu i w jego otulinie.
Between 1957-1958, elaborate research was conducted in the Leon Wyczolkowski Nature Reserve of Old Polish Yews, Wierzchlas. The objective of the study was to document the current condition of forest associations, and to provide the image of the stand’s spatial 3D structure. A profile was established in a form of a long and narrow strip. Both, the location and dimensions of every tree and shrub were registered inside. Collected data were presented in a form of vertical and horizontal cross-sections of the forest stand. Seven years later (in 1964), the aerial survey was performed there, from which the black & white photographs were found. We decided to check whether it would be possible to use them to reconstruct the spatial structure of nature reserve’s forest. For this purpose, a Video-Stereo-Digitizer and a digital photogrammetric station were used. The study proved close similarity between the forest structure registered photogrammetrically and that registered by field survey. The profiles compared matched also each other well. With the photogrammetric measurements, it is also possible to perform a reliable analysis of natural processes in the entire area of this nature reserve and its surroundings
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2007, 17a; 23-32
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chiny, Stany Zjednoczone i świat w oczach Wielkiego Mistrza Lee Kuan Yewa
Lee Kuan Yew : the grand masters insights on China, the United States, and the world
Autorzy:
Lee, Kuan Yew (1923-2015).
Współwytwórcy:
Allison, Graham T. (1940- ). Opracowanie
Blackwill, Robert D. Opracowanie
Wyne, Ali (1987- ). Opracowanie
Bińczak, Halina. Tłumaczenie
Kurhaus Publishing. pbl
Data publikacji:
2013
Wydawca:
Warszawa : Kurhaus Publishing Kurhaus Media
Tematy:
Lee, Kuan Yew (1923-2015)
Polityka międzynarodowa od 1945 r.
Polityka
Wywiad dziennikarski
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
The yew (Taxus baccata L.) of the Cisowy Jar reserve near Olecko
Autorzy:
Iszkulo, G.
Powiązania:
https://bibliotekanauki.pl/articles/41049.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
sex ratio
shade
yew
Polska
Taxus baccata
Olecko
Cisowy Jar Reserve
growth
nature reserve protection
Opis:
The present paper describes the current situation of yews in the Cisowy Jar Reserve: number, their state of health, height and diameter structure, and the sex ratio. In the result only 25 yews were found. Their state of health was relatively good, but many yews that grew on very heavily shaded stands were characterized by little height accretion and greater leaf reduction than those growing on more sunny positions. There is no continuity of population. No specimens in the height range between 51-100 cm were found. Sparse seedlings die in first years after appearing. Active human help is necessary to protect and to reconstruct the yew population in the reserve.
Źródło:
Dendrobiology; 2001, 46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
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