Hidrológiai Közlöny 1980 (60. évfolyam)

1. szám - Hajdú Lajos–Rajczy Miklós–Tóth László: A Margalef-féle pigment extinkció ráta (PER) alakulása a Balatonban

40 Hidrológiai Közlöny 1980. 1. sz. IRODALOM [1] Antia N. J., C. D. McAllister, T. R. Parsons, K. Stephens and J. D. H. Strickland (1963): Further measurements of primary production using a largevolume plastic sphere. — Limnol. Oceanogr. 8, 166—183. [2] Estrada M. and F. Vallespinos (1976): Estudio de espectros de absorcion de extractos de pigmentes de comunidades de algas macrofitas. — Invest. Pesquera 40, 551—559. [3] Czekanowski J. (1909): Zur differential Diagnose der Neandertalgruppe. — Korrespbl. dt. Ges. Anthrop. 40, 44—47. [4] Felföldy L. (1974): Biológiai vízminősítés. — In: Felföldy L. (szerk.): Vízügyi Hidrobiológia, 3, 1—242. [5] Golterman H. L. (1975): Physiological Limnology 1—489. —Elsevier, Amsterdam. [6] GorhamE. and J. E. Sanger (1972): Fossil pigments in the surface sediments of a meromictic laké. — Limnol. Oceanogr. 17, 618—622. [7] Haldall P. 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(1976): Comunidades bentonicas de sustrato duro del litoral Ne espanol. III Pigmentes y production. — Invest. Pesquera 40, 515—532. [40] Winner, R. W. (1969): Seasonal changes in biotic diversity and Margalef's pigment ratio in a small pond. — Verh. Int. Ver. limnol. 17, 503—510. [41] Winner, R. W. (1972): An evaluation of certain indices of eutrophy and maturity in lakes. — Hydrobiologia 40, 223—245. TESTING MARGALEF'S PIGMENT EXTINCTION RATIO (PER) ON LAKE BALATON by Hajdú, L. Rajczy, M. and Tóth, L. The literature on Margalef's "pigment diversity" has been reviewed and a new term: "pigment extinction ratio" (PER) is suggested. The PER value increases over the average at the critical physiological condition of the phytoplankton. Although the annual variations of the PER values have apparently not carried any information (Fig. 3), the eluster analysis of sampling sites has divided the lake into three clearly definable parts with boundaries at Szigliget (II) and Balatonszemes (V) (Figs. 4 and 5). The eluster analysis of times (Fig. 2) could not be interpreted owing to the lack of weather data. Slight excess work is thus likely to yield a valuable index, the annual variations of which can be processed by eluster analysis to detect differences not readily apparent by simple inspection. Work on index testing will be continued.