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Nowe stanowiska jemioły pospolitej jodłowej Viscum album L. subsp. abietis (WIESB.) JANCH. na Pogórzu Śląskim i w północnej części Beskidu Śląskiego

Beczała Tomasz, Jonderko Tomasz, Chmura Damian

Polish Journal of Materials and Environmental Engineering

2022

Vol. 3 (23)

21--27

The semiparasitic plant common fir mistletoe Viscum album L. subsp. abietis (WIESB.) JANCH is the rarest of three subspecies in Poland. In the country this mistletoe has northern border of distribution range. The previous literature data suggested that the subspecies has only few localities in the Silesian Foothils and in northern part of the Silesian Beskid Mts (southern Poland) and in addition, some of them were not confirmed. Mistletoe Viscum album subsp. abietis has been reported to increase its range and abundance in Europe recently therefore authors decided to update the distribution data of the subspecies the aforementioned area. The data about distribution of host tree silver fir Picea abies was taken from forest database and from personal communication with foresters. The area was search to find localities of the individuals on trees. In case of the single specimens on fir trees binoculars were used. In total 39 localities were given including more than 30 new localities when compared to literature data from 20th century. In Silesian Foothils there are 20 localities and 19 stands in the Silesian Beskid Mts. On the localities the abundance of individuals ranged from single plants on one tree to massive infestation of several dozen of fir trees. The common fir mistletoe distribution seems to be an underestimated in the southern part of the Silesian Voivodeship, it is highly probable that its next localities will be found in nearest future. Despite the category endangered “EN” in the Red Book of Plants of the Silesian Voivodship the species is not threatened anymore. On the contrary it becomes to pose a serious threat to silver fir because it can contribute to decline of trees. During the massive infestation of firs by mistletoe, fir trees often die gradually. The obtained new information will allow for a better recognition of the current species distribution and a possible revision of the threat category of common fir mistletoe in the territory of Silesian Voivodeship. For a more detailed analysis of the degree of expansion of this species, it would be advisable to examine the number of individuals and study the development of mistletoe over time on the host on randomly selected trees.

Nowe stanowiska Didymosphenia geminata w Ropie i Białej Tarnowskiej (Polska Południowa)

Noga T., Stanek-Tarkowska J., Irlik E., Peszek Ł.

Inżynieria Ekologiczna

2012

Nr 30

257-265

W latach 2010-2011 badano zbiorowiska okrzemek w wodach Białej Tarnowskiej i Ropy. Stwierdzono obecność Didymosphenia geminata (Lyngbe) M. Schmidt na nowych stanowiskach na terenie Polski południowej. Na terenie Europy do niedawna występowała bardzo rzadko, zwłaszcza w zimnych, oligotroficznych wodach w górnych biegach potoków. Pojedyncze okazy tego gatunku występują w rzekach - Ropie i Białej. W sezonie wiosennym obserwowano go licznie w rzece Ropie poniżej zbiornika zaporowego "Klimkówka", gdzie tworzył maty i galaretowate styliki.

Studied territory involved two rivers: the Ropa River and the Biała River, both having its sources in the Low Beskid. The Ropa River is the biggest left-bank inflow of the Wisłoka River, running on its all length through two mesoregions (the Low Beskid and the Gorlickie Depression, few geographical regions and two Provinces (the Małopolska Province and the Podkarpacie Province). The valley of the Biała Tarnowska River is the right-bank inflow of the Dunajec River, which spreads through the Central Beskidian Piedmont. Materials to researches were taken in 2010-2011, from waters of the Biała Tarnowska River and the Ropa River. The aim of the work was to indicate new studying posts on both rivers, on which the existence of D. geminata was stated and to carry out a taxonomic analysis of populations with a determination of environmental conditions in studied liquids. Didymosphenia geminata was stated in all studying post with an exception of the last one located on the Biała River. It existed in forms of individual specimen, mainly on rocks. It formed bigger populations only on the Ropa River below the dammed reservoir "Klimkówka" - was observed on stalks in the Spring and Autumn seasons, it also formed mats in the Spring season.