Volume 68 (2019): Edizione 3 (December 2019)

The study summarises results of the ichthyologic research of the Podolský and Stříbrný brooks in Hrubý Jeseník. The research was organised for the purpose of finding the actual situation in the fish settlements in the sections of interest and to make suggestions for their further management benefiting the original fish communities.

The results have shown that there is the community of water organisms with naturally reproducing Cottus poecilopus and Salmo trutta in both partly adjusted water flows which have not been restocked by man since 1996.

The facts found within the research suggest that the biologically correct way for the further development of fish populations in the Podolský and Stříbrný brooks may be the maintenance of the existing natural conditions while no local adjustments of the flow beds along roads should be excluded.

The research results have proved that the existing natural conditions and the very limited anthropogenic pressure put on the water biocenoses have been the decisive factors during the formation of the now existing fish population structures which can be assessed as good from the ecological point of view. Because of that we have recommended to the manager of the water flows neither interfering in the development of the current fish populations nor restocking any fishes.

We consider the finding that the age structure and the high numbers of Salmo trutta and Cottus poecilopus have been, in the given situations, the indicators of their populations’ ability, even at the sympatric presence of Lutra lutra and Ciconia nigra, resistant against the predators’ pressure, as very important.

Lewinskya acuminata is reported as new for the bryoflora of the Czech Republic. The species was discovered in the Protected Landscape Area “Elbe Sandstone Mountains” (CHKO Labské píscovce) in NW Bohemia. The locality is described in detail. The species is illustrated by photographs. Its diagnostic characters are briefly discussed.

The paper presents a list of 23 new records of Solidago ×niederederi, a spontaneous hybrid between the North American S. canadensis and the European S. virgaurea. The list includes 8 records from Austria, 3 records from Italy and 12 records from Poland. An increase in the number of hybrid localities over the last 10 years in Europe is pointed out and discussed.

Here we present first records of three moth fly species in the Czech Republic (Katamormia bezzii Salamanna, 1983, Panimerus goodi Vaillant & Withers, 1992 and Pneumia fonticola (Szabó, 1960)), increasing the total number of Czech moth fly species to 179. Katamormia bezzii represents the first finding outside of Italy, while P. goodi is only the second record outside of its type locality (Ireland), as is Peripsychoda zbytka Ježek, 2004 (Bohemia or.) and Pneumia kabelaki Omelková & Ježek, 2012 (Bílé Karpaty PLA). Jungiella (Psychocha) janiki Omelková & Ježek, 2017 has only been found at five sites (incl. the type locality) in the Bílé Karpaty Mts so far. The current number of species from the northwest part of the Czech Carpathians now totals 116. Altogether, 32 species were included in the national Red List of threatened invertebrates (Ježek 2005), with 23 species categorised as ‘nationally scarce’. Maximum alpha diversity was 61 species (71 as the sum of two seasons) at SKM OR 1 in the Skalická Morávka National Nature Monument (NNM), with maximum beta diversity also recorded at the Skalická Morávka NNM, with 82 species from three localities.

In 2010, an attempt was made to quantify bird species breeding in the Opava Mts. and their foothill (c. 135 km², including c. 40 km² [31%] of forests). The area is situated in the extreme south of Opole Silesia, SSW Poland. For most non-passerine species, total counts were made for the whole area (distribution of their breeding pairs is shown on maps), while for most passerine species, semi-quantitative studies were conducted. A total of 116 breeding and two probably breeding bird species were recorded. Changes in breeding avifauna of the area during the years 1880-2010 are also analysed based on literature search. A total of 134 breeding bird species were recorded over the 130 years. During the years 1990-2010, decreae in numbers has been evidenced for the following species: Perdix perdix, Tetrastes bonasia, Tyto alba, Athene noctua, Corvus frugilegus, and Nycifraga caryocatactes, In the same period, increase in numbers has been documented for species such as: Accipiter gentilis, Falco tinnunculus, Columba oenas, Jynx torquilla, Dryocopus martius, Picus canus, Picus viridis, Motacilla cinerea, Luscinia megarhynchos, Phoenicurus phoenicurus, Saxicola rubicola, Locustella naevia, Locustella fluviatilis, Corvus corax and Corvus cornix. Opava Mts. and its foothills constitute an imporant conservation area. Fifteen species listed in Annex I of the Bird Directive of the E.U. were recorded there, including a sizable population of Ficedula albicollis.

A reproducing population of the common wall lizard (Podarcis muralis) is reported from the Czech Silesia (Czech Republic) for the first time. The lizards live in the ruins of the castle Šelenburk which is located on the Cvilín Hill near the town Krnov. This finding extends the known range of P. muralis from the nearest known Moravian locality cca 60 km to the North-West.

The unpublished zoogeographical views of louse flies from genus Hippobosca deposited in Collection of the Zoological institute of Russian Academy of Sciences in St. Petersburg, Russia from Transcaucasia are summarized. A total 248 deposited samples and one recent sample belonging to species Hippobosca equina Linnaeus, 1758 and Hippobosca longipennis Fabricius, 1805 from Armenia, Azerbaijan, Georgia, Southern Caucasus and north-western Iran are presented.

A zoogeographical review summarized the current distribution of 28 morphologically determined horse fly species recently collected in three Western Africa countries. In Malaise trap collections, the family Tabanidae was represented by three subfamilies, Pangoniinae, Chrysopsinae and Tabaninae (tribes Philolichini, Chrysopsini, Tabanini and Haematopotini), and six genera: Philoliche Wiedemann, 1828 (1 species), Chrysops Meigen, 1803 (3 specis), Ancala Enderlein, 1922 (2 species), Euancala Enderlein, 1922 (1 species), Tabanus Linnaeus, 1758 (13 species) and Haematopota Meigen, 1803 (8 species). Information contained in the principal publication The Catalogue of the Diptera of the Afrotropical Region 1980 is complemented by newly published studies on horse flies in Sub-Saharan Africa.