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Microscopic Fungi of the Littoral Zone in Selectcd Water Bodies of the Pojezierze Bobolickie Lakeland and the Równina Gryficka Plain

Adamska I., Czerniawska B., Dziegielewska M.

Ecological Chemistry and Engineering. A

2010

Vol. 17, nr 8

885-892

The occurrence of parasitic fungi colonising the vegetation in the littoral zone of selected water bodies (two nitrified ponds, a class I lake and a class III lake) was studied in the period between 2006 and 2008. The study area comprised the Pojezierze Bobolickie lakeland and the Równina Gryficka plain. A total of 64 plant species partly immersed in water or overgrowing the land were examined. The material was colonised by 90 species of fungi and fungi-like organisms. Anamorphic fungi predominated. The greatest number of fungi was represented by fungi of the genera Septoria and Phyllosticta. Only five species (Cladospcirium sp.. Leptosphaeria caricis, Puccinia caricina, P. dioicae and Sphaerellopsis filum) occurred in the littoral zones of all the water bodies. The majority of fungi observed in the study (63 % of species) were common in Europe while 33 species were identified as rare. Fungal species recorded in the study did not pose a pathogenic threat to crop plants. Diversified numbers of species found in individual water bodies resulted from the diversified species composition of the vegetation. Agrotechnical and chemical treatment conducted in adjacent fields and directly in the littoral zone of the water bodies considerably influence the species composition of fungi of nitrified ponds.

W latach zasiedlających roślinność literału wybranych zbiorników wodnych (oczka śródpolnego oraz jezior o wodach I i III klasy czystości). Teren badań obejmował Pojezierze Bobolickie i Równinę Gryficką. Badaniom poddano 64 gatunki roślin częściowo zanurzone w wodzie lub porastające ląd. Analizowany materiał zasiedlało 90 gatunków grzybów i FLO. Wśród nich dominowały grzyby anamorficzne. Największa liczba gatunków reprezentowała grzyby z rodzajów Septoria i Phyllosticta. Tylko pięć gatunków (Cladosporium sp" Leptosphaeria curicis, Pucciniu caricina, P. dioicae Sphaereilopsis filwri) występowało równocześnie w litoralach wszystkich badanych zbiorników. Większość znalezionych grzybów (63 % gatunków) było pospolitych dla Europy, a 33 uznano za rzadkie. Rozpoznane gatunki grzybów nie stanowiły zaerożema chorobowego dla roślin uprawnych. Powodem zróżnicowanej liczby gatunków znajdywanych w poszczególnych zbiornikach był zróżnicowany skład gatunkowy roślinności. Na skład gatunkowy grzybów oczek śródpolnych duży wpływ mają zabiegi agrotechniczne i chemiczne prowadzone na przyległych polach oraz bezpośrednio w obrębie literału zbiornika.

Selenite-gypsum microbialite facies and sedimentary evolution of the Badenian evaporite basin of the northern Carpathian Foredeep

Bąbel M.

Acta Geologica Polonica

2005

Vol. 55, no. 2

187-210

Facies analysis was applied to the six main facies of the Badenian (Middle Miocene) gypsum deposits exposed along the margin of the Carpathian Foredeep basin, from Moldova to the Czech Republic. These facies, recognised within primary selenite and fine-grained gypsum deposits, are: (i) selenites with vertical crystals; (ii) selenites with horizontal crystals; (iii) selenite debris flow facies; (iv) selenite debris facies; (v) gypsum microbialite facies; and (vi) alabastrine facies. The facies represent various environments (from shallow-brine to subaerial) of a giant salina-type basin without open-water connections with the sea and showing evaporite drawdown. Integration of facies analysis and event stratigraphic studies in the gypsum basin allowed reconstruction of its sedimentary history.The architecture of the gypsum facies suggests that the margin of the basin was occupied by a system of variable perennial saline pans (dominated by selenite deposition) and evaporite shoals (dominated by gypsum microbialite deposition). The basin was infilled with evaporite deposits by aggradation. After initial evaporite drawdown, the northern margin of the basin evolved from a large perennial saline pan (or system of pans) into an evaporite shoal and then back again into a perennial pan, whereas the east area of the basin was a vast evaporite shoal dominated by gypsum microbialites. Separate selenite pans of oligotrophic-type developed both at the periphery and in the interior of this shoal. Later, predominantly clastic gypsum deposition developed throughout the basin margin, presumably due to a drastic change in the chemistry and salinity of the brine. Evaporite deposition was arrested by a flood of marine waters and rapid deepening.