S. Orbán szerk.: Studia Botanica Hungarica 11. 1976 (Budapest, 1976)

Szujkóné Lacza, Júlia, Kováts, Dezső, Orbán, Sándor, P. Verseghy, Klára, P. Komáromy, Zsuzsa; Hajdu, Lajos: Néhány egyszerű módszer a Hortobágy Nemzeti Park (HNP) növényfajainak és vegetációjának tanulmányozásához

Contrarily to life-form irive stigation

, applied phenology is interested in the active stages of-plants with the purpose of recording solely these stadia (BORISHOVA 1965 cf. MAKAREVICH - PON

JA TOVSKA JA 1972. READER 1 973). In a further breakdown RAJHATHY and FARKAS (1953) recorded the time differences between the stages in varieties of Linum usitatissium L. , by a special but simple sort of classification. The production biological point of wiev, also contains utilizable information the means of nourishment by plants, i. e. the heterotrophous

, autotrophous

, symbiontic, parasitic. As far as possible, these characters are also taken into accent by us. The density of plant populations as proposed by DUTY (1970), or the estimation of plant cover on each sample plot is being also recorded. The paper finally summarizes the literature refering to the methods and different research fields, with special regard to those made in the HNP on the foregoing groups, except for the fungus and flowering plants. These latter have been recorded by TÓTH and coworkers (1965) in connection with the HNP. IRODALOM - REFERENCES AMANN, J. (1923): Bryogéographie de la Suisse. - Zürich, pp. 453. ARNELL, H. W. (1875): De Scandinavska Löfmossornas Kalendárium. Uppsala, Univ. Arbskrift. ARNELL, H. W. (1905): Phaenological observations on mosses. - The Bryologist, 8:41 -44. BARKMAN, J.J. (1958): Phytosociology and Ecology of Cryptogamic Epiphytes. - Assen, pp. 628. BOROS, A. (1927): Adatok a tiszántúli szikesek mohaflórájához. Bot. Közi. 24:176-1 78. BOROS, A. (1924): A Bryum alpinum magyarországi elterjedése. - Bot. Közi 39:99-1 04. BOROS, Á. (1961): Rizs-gyom tanulmányok. - Agrobot. , 2:141-163. BOROS, A. (1968): Bryogéographie und Bryoflora Ungarns. - Budapest, 1968. pp. 466. BRAUN-BLANQUET, J. (1951): Pflanzensociologie 2. Aufl. Wien. DUTY, J. (1970): Benthos: Makrobenthos-Makroflora, in: BREITIG, G. TÜMPLING, W. (edit. ) 1970: Ausgewählte Methoden der Wasseruntersuchung IL Biologische mikrobiologische und toxikologische Methoden. - VEB G. Fischer Verl, Jena. ELANIN, I.N. (1968): Fenologia nekatorüh lesnih mhov. - Lesovedenie 2:68-73. ENTZ, G. jun. (1930): Phaenologische Aufzeichnungen und einige morphologische Beobachtung an Chrysomonaden. - Folia Crypt. 1:699-742.