1997

SISUKORD

CONTENTS * INHALT

Number 1/2

In English. Summaries in Estonian

Foreword; 3
Urmas TARTES
Patterns of aspartate aminotransferase variation in relation to population size, founder effect, and phytogeographic history in Cypripedium calceolus; 4–11
Tiiu KULL and Tiit PAAVER
A classification of river reaches on the basis of water quality with reference to streams of Saaremaa Island; 12–26
Peeter PALL
A three-parameter trophic state index for small lakes; 27–39
Anu MILIUS and Henno STARAST
Tendencies and relationships in the pelagic environment and plankton community of Lake Võrtsjärv in 1964–93; 40–57
Peeter NÕGES, Tiina NÕGES, Reet LAUGASTE, Juta HABERMAN, and Veljo KISAND
Plankton changes in Estonian small lakes in 1951–93; 58–79
Ingmar OTT, Reet LAUGASTE, Saida LOKK, and Aare MÄEMETS
A review of the Estonian Ditomyiidae, Keroplatidae, and Diadocidiidae (Diptera, Nematocera); 80–87
Olavi KURINA
Fishes and fisheries management in Lake Peipsi; 88–93
Ervin PIHU
Arcto-alpine Leotiales and Ostropales from the mountains of South Norway; 94–111
Ain RAITVIIR and Helle JÄRV

Number 3

In English. Summaries in Estonian

Morphometrical comparison between Estonian and Norwegian great snipes (Gallinago media); 115–122
John Atle KÅLÅS, Andres KURESOO, Leho LUIGUJÕE, and Sten Levin SVARTAAS
Two new species of the genus Medetera (Diptera, Dolichopodidae) from Estonia and Sweden; 123–128
Heino ÕUNAP
Flagellated spores of Dermocystidium cyprini;129–134
Kaja LOTMAN and Jüri KASESALU
Seasonal changes in total phosphorus and dissolved inorganic phosphate in four small Estonian lakes; 135–149
Anu MILIUS and Henno STARAST
Measuring system for passive optical remote sensing of water bodies; 150–163
Helgi ARST, Leo KÄÄRMANN, Georg ARST, Uno VEISMANN, and Tiit KUTSER
Impacts of fish farming on the state of Estonian coastal sea; 164–173
Anu HERMAN
Pedogenetic changes in the quantity and distribution of textural and chemical soil constituents during thirty years; 174–190
Loit REINTAM

SHORT COMMUNICATIONS
Parna reseri, a new leaf miner for the fauna of northern Europe (Hymenoptera, Tenthredinidae); 191–192
Mikk HEIDEMAA and Matti VIITASAARI

Number 4

In English. Summaries in Estonian

Lichen mapping in Europe: Letharia vulpina, Menegazzia terebrata; 195–213
Hans TRASS
Comparison of light and kinetin effects on anthocyanin biosynthesis in buckwheat seedlings; 214–224
Ants TOHVER, Lembe LAANEST, and Elmo PALM
A comparative study of zooplankton in two large lakes of Estonia; 225–245
Juta HABERMAN
Revision of earth-boring dung beetles from the genus Geotrupes Latr. (Coleoptera, Scarabaeidae) of Estonia; 246–256
Georg MILÄNDER, Vitali NAGIRNÕI, and Ilmar SÜDA
Two species from the genus Exechia Winn. (Diptera, Mycetophilidae) new to Estonia; 257–260
Olavi KURINA
Striking increase in incidence of cancer of the oral cavity and pharynx in Estonia 1968– 92; 261–272
Aleksei BABURIN, Jan-Willem W. COEBERGH, Mati RAHU, and Kaja GORNOI

Instructions to authors; 273
Copyright Transfer Agreement; 277
Contents of volume 46; 279