Comparison of ecological condition and conservation status of English yew population in two Austrian gene conservation forests

Abstract

English yew Taxus baccata L. has been catalogued as endangered tree species and prone to extinction in Austria as well as many other parts of Europe. The present work is based on the comparison of the natural population of two gene conservation forests from different geographic locations in Austria where the spatial structure, regeneration status and possible conservation measures are examined. The pole stand distribution varied distinctly in each sites. The total no of individuals per ha (DBH ≥5 cm), average DBH and average height were 492 n·hm⁻², 8.8 cm and 6.3 m in Stiwollgraben whereas in Leininger Riese 45 n·hm⁻², 16.3 cm and 7.6 m respectively. Over 79% of the Stiwollgraben population were represented the good health condition, while in Leininger Riese it was less then 49 % which means population of Stiwollgraben is in better condition compared to Leininger Riese. The sites differed considerably in the pattern of regeneration but pattern were consistent with the dynamics depicted by the age distribution. Considering the one-year-old seedlings Stiwollgraben contains 13 019 individuals·hm⁻² whereas Leininger Riese only 1 368. Surprisingly there were no any saplings in respect of 51 to 150 cm height classes in both sites and 30 to 50 cm in Stiwollgraben. In that context the conservation of English yew on the forest level may require well-managed reserves and long-term rotations between harvest events, protection from the herbivore and reduction of competition, which will enhance the long-term viability of the species.

Keywords

Endangered species / Taxus baccata / Population structure / Forest management / Conifers

References

[1] Barrett S.C.H., Kohn J.B. Falk D.A., Holsinger K.E. Genetic and evolutionary consequences of small population size in plants: implications for conservation Genetics and conservation of rare plants, 1991 New York: Oxford University Press 3-30.

[2] Bolsinger, C.L., Lloyd, J.D. 1993. Global yew assessment: status and some early result. In: S. Scher and Shimon B. Schwarzs child (Eds), Intern. Yew Resources Conference: Yew (Taxus) conservation Biology and Interactions. Berkeley, California, Unpublished proceedings.

[3] Boratyński A., Didukh Y.P., Lucak M. The yew (Taxus baccata L.) population in Knyazhdvir nature reserve in the Carpathians (Ukraine) Dendrobiology, 2001, 46: 3-8.

[4] Brzeziecki B., Kienast F. Classifying the life-history strategies of trees on the basis of Grimian model Forest Ecology Management, 1994, 69: 167-187.

[5] Bugala W. Bialobok S. Systematics and viability The yew-Taxus baccata L, 1978 Washington D.C.), Warsaw, Poland: Foreign Scientific Publications Department of National Centre for Scientific, Technical, and Economic Information, (for the Department of Agriculture and the National Science Foundation 15-32.

[6] Cardel Y., Rico-Gray V., Garcia-Franco J.G., Thien L.B. Ecological Status of Beaucarnea gracilis, an endemic species of the semiarid Tehuacan Valley, Mexico Conservation Biology, 1997, 11: 367-374.

[7] Czatoryski A. Bialobok S. Yew in the past The yew-Taxus baccata L, 1978 Warsaw, Poland: Foreign Scientific Publications Department of National Center for Scientific, Technical and Economic Information, (For the Department of Agriculture and National Science Foundation, Washington D.C.) 110-115.

[8] Dhar, A., Ruprecht, H., Vacik, H. 2006a. Population viability risk management (PVRM) for in-situ management of a Taxus baccata L. population in Austria. In: Society for Conservation Biology-European Section [Eds.] Diversity for Europe, 1st European Congress of Conservation Biology 22.08–26.08.2006, Eger, Hungary. p. 106.

[9] Dhar A., Ruprecht H., Klumpp R., Vacik H. Stand structure and natural regeneration of English yew (Taxus baccata L.) at Stiwollgraben in Austria Journal of Dendrobiology, 2006, 56: 19-26.

[10] Gill R.M.A., Gurnell J., Trout R.C. Ferris-Kahn R. Do woodland mammals threaten the development of new woods? The ecology of woodland creation, 1995 Chichester: Wiley 201-224.

[11] Haeggström C.A. The influence of sheep and cattle grazing on wooded meadows in a land, SW Finland Acta Botanica Fennica, 1990, 141: 1-28.

[12] Herz, H., Bernhard, A., Nebenführ, W., Slunsky, R., Litschauer, R., Heinze, B. 2005. Das Eibenvorkommen in den österreichischen Generhaltungswäldern. Poster bei der „12. Tagung der Eibenfreunde“, Kempten im Allgäu, 29.9.–2.10.2005.

[13] Hulme P.E. Natural regeneration of yew (Taxus baccata L.): micro site, seed or herbivore limitation Journal of Ecology, 1996, 84: 853-861.

[14] Izdebski K. Drzewai krzewy rezerwatu cisowego Wierzchlas i struktura biologiczna drzewostanu Zeszyty Naukowe UMKW Toruniu, Biologia, 1956, 1: 5-41.

[15] Iszkulo G., Boratyński A. Analysis of the relationship between photosynthetic photon flux density and natural Taxus baccata seedlings occurrence Acta Oecologica, 2006, 29(1): 78-84.

[16] Iszkulo G., Boratyński A., Didukh Y., Romaschenko K., Pryazhko N. Changes of population structure of Taxus baccata during 25 years in protected area (the Carpathian Mountains, East Ukraine) Polish Journal of Ecology, 2005, 53(1): 13-23.

[17] Jahn G. Röhrig E., Ulrich B. Temperate deciduous forest of Europe Temperate deciduous forest, vol. 7, 1991 Amsterdam: Elsevier 377-520.

[18] Kelly D.L. The native forest vegetation of Killanery, southwest Ireland: an ecological account Journal of Ecology, 1981, 69: 437-472.

[19] Kelly D.L. Native woodland in western Ireland with especial reference to the region of Killarney, 1975 Ireland: University of Dublin

[20] Krol S. Bialobok S. Zarys ekologii Cis Taxus baccata L. Nasze drzewa lesne., 1975 Warszawa-Poznan: PWN 78-103.

[21] Kościelny S., Król S. Wstępne wyniki badań nad wpływem czynników warunkujących naturalne odnawianie się cisa Rocznik Wyższej Szkoły Rolniczej, Poznań, 1965, 27: 102-107.

[22] Kwit C., Horvitz C.C., Platt W.J. Conserving slow growing, long lived tree species: Input from the demography of a rare under story conifer, Taxus floridana Conservation Biology, 2004, 18: 432-443.

[23] Lane C.R., Belles P.A., Hughes K. J. D., Tomlinson A.J., Inman J.A., Warwick K. First report of ramorum dieback (Phytopthera ramorum) on container-grown English yew (Taxus baccata) in England Plant Pathology, 2004, 53: 522

[24] Lilpop J. Stanowisko cisow na hysej Gorze pod Starym Zmigrodem Ochrona Przyrody, 1931, 9: 209 [The yew stands on hysa Gora near Stary Zmigrod]

[25] Małgorzata F.J. Vančura K., Fady B., Koskela J., Mátyás Cs. Conservation of common yew (Taxus baccata L.) in Poland Conifers Network, Report of the second (20–22 September 2001, Valsaín, Spain) and third (17–19 October 2002, Kostrzyca, Poland) meetings, 2004 Rome, Italy: International Plant Genetic Resources Institute. 31-34.

[26] Meinhardt, H. 1996. Eibenvorkommen in Thüringen und Probleme Der Eibenverjüngung. In: Beiträge zur Eibe. Kölbel M., Schmidt O. (eds.), Bericht aus der Bayerishen Landesanstalt für Wald und Forstwirtschaft 10: 04.

[27] Mitchell F.J.G. The vegetational history of Killarnery oak woods, SW Ireland: evidence from fine spatial resolution pollen analysis Journal of Ecology, 1988, 76: 415-436.

[28] Mossadegh A. Stands of Taxus baccata in Iran Revue Forestiere Francaise, 1971, 23(6): 645-648.

[29] Müller, F., Schultze, U. 1998. Das österreichische Programm zur Erhaltung forstgenetischer Ressourcen.. In: Geburek Th., Heinze B. (Eds.), Erhaltung genetischer Ressourcen im Wald.. Ecomed, pp 120–135.

[30] Niklfeld, H. 2005. (Ed.). Rote Listen gefährdeter Pflanzen Österreichs. Grüne Reihe des-Bundesministeriums fur Umwelt, Jugend und Familie, p.10.

[31] Pridnya M.V. Phytocenotic status and structure of Khosta common yew population in the Caucasus Biosphere Reserve Soviet Journal of Ecology, 1984, 15: 1-6.

[32] Russ W. Verbreitung seltner Holzgewächse nach der Österreichischen Waldinventur BFW Praxis Information, 2005, 6: 3-5.

[33] Sauvage C.H. L’if dans le Grandatlas. Bull Sci Nat. du. Maroc, 1941, 21: 82-90.

[34] Scheeder Th. Die Eibe (Taxus baccata): Hoffung für ein fast verschwundenes Waldvolk, 1994 Eching: IHW-Verlag

[35] Schadauer K., Hauk E., Starlinger F. Daten zur Eibe aus der Österreichischen Waldinventur Der Eibenfreund, 2003, 10: 15-18.

[36] Strouts, R.G. 1993. Phytophthora root diseases. Arboriculture Research Note, 58/93/PATH.

[37] Svenning J.-Ch., Magárd E. Population Ecology and conservation status of the last natural population of English yew Taxus baccata in Denmark Biological Conservation, 1999, 88: 173-182.

[38] Thomas P.A., Polwart A. Taxus baccata L. biological flora of the British Isles 229 Journal Ecology, 2003, 91: 489-524.

[39] Tittensor R.M. Ecological history of yew Taxus baccata L. in Southern England Biological Conservation, 1980, 17: 243-265.

[40] Vacik H., Oitzinger G., Georg F. Population viability risk management (PVRM) zur Evaluierung von in situ Erhaltungsstrategien der Eibe (Taxus baccata L.) in Bad Bleiberg Forstwissenschaftliches Centralblatt, 2001, 120: 390-405. [Evaluation of situ conservation strategies for English yew (Taxus baccata L.) in Bad Bleiberg by the use of population viability risk management (PVRM)]

[41] Williamson R. The great Yew Forest, 1978 London: Macmillan