Figure 5 - uploaded by Lara Mołoniewicz
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Examples of Rana dalmatina breeding sites in the Roztocze region of southeastern Poland: (A) Vernal pool at the edge of the forest (site 43); (B) temporary pond in a meadow (site 47); (C) vernal pool in mixed pine-fir-beech forest (site 51); (D) wheel rut on forestry road in mixed beech-pine-fir forest (site 104). Photos: A by S. Banach, B, C by P. Stachyra, D by B. Zając.
Source publication
The precise delimitation of range boundaries is imperative for the conservation of amphibians in the wake of intense habitat conversion and global climate change. Despite decades of study, the distributions of many amphibian species in Central and Eastern Europe are still relatively uncharted. In this contribution, we report 40 new breeding localit...
Contexts in source publication
Context 1
... of the water bodies containing R. dalmatina eggs were small: 19 out of 40 breeding ponds were smaller than 100 m², and only 5 were larger than 1000 m² (range: 10-20,000 m²). Four types of R. dalmatina breeding sites, representative of the variety present in the Roztocze region, are depicted in Figure 5. Co-occurring amphibians (Table 1) includ- Figure 3. Photograph of an agarose gel preparation illustrating the size differences in PCR amplicons of a fragment of the mitochondrial ND1 gene used for rapid molecular identification of three European brown frog species. ...
Citations
... Зокрема це стосується унікального природного регіону -Розточчя, що простягається від Львова на північний захід до українсько-польського кордону та далі територією Польщі. Адже нещодавно R. dalmatina знайшли на теренах польської частини Розточчя [10], а також північно-західніше м. Львів [11]. ...
... Możliwe jest jednak, że gatunek niezaliczony niegdyś do polskiej fauny mógł nie zostać rozpoznany -dobrym tego przykładem jest żaba zwinka Rana dalmatina, której podczas badań prof. W. Juszczyka i jego magistrantów nie stwierdzono, a której liczne populacje znane są obecnie z Kotliny Sandomierskiej, Podkarpacia, Karpat, Doliny Odry, Roztocza, Wyżyny Śląskiej i kilku innych rejonów (Juszczyk 1987, Bonk et al. 2012, Mołoniewicz et al. 2021, choć w przypadku tego gatunku również nie można wykluczyć rozszerzania się zasięgu. Możliwe zatem, że w przygranicznych rejonach Śląska utrzy-mywała się rozproszona, reliktowa populacja zaskrońca rybołowa, która z powodu pogarszających się warunków klimatycznych i siedliskowych (regulacje rzek, rozwój rolnictwa i przemysłu) utrzymywała się w niewielkiej liczebności. ...
ABSTRAKT: Do momentu obserwacji jednego osobnika w 2009 r. zaskroniec rybołów Natrix tessellata nie był uważany za element polskiej fauny. Ponownych, opisanych w tej pracy, obserwacji dokonano do-piero w latach 2019-2021 w Pogwizdowie, niedaleko miejsca pierwszej obserwacji. Obecność osobników z różnych klas wiekowych wskazuje na istnienie stabilnej, potencjalnie trwałej populacji. Przewaga mło-dych węży sugeruje, że jest to populacja stosunkowo nowa, rozwijająca się. Obecność zaskrońca rybołowa w Polsce uważa się za efekt introdukcji, jednak biorąc pod uwagę informacje odnoszące się do populacji tego gatunku z czeskiej części Śląska, nie można wykluczyć jej naturalnego, reliktowego pochodzenia lub niedawnej, naturalnej ekspansji z populacji z terenu Czech.
ABSTRACT: The occurrence of the dice snake Natrix tessellata in Poland was first documented in 2009. Between the years 2019-2021 we found many individuals near the village of Pogwizdów, close to the border of the Czech Republic. The observations included individuals of different ages, revealing a reproducing and viable population. The dominance of juvenile individuals and lack of earlier records suggests that the population is relatively new and expanding. It is presumed that the emergence of the dice snake in Poland is due to human-mediated introduction, however, regarding data on populations of this species in Czech Silesia, a relic origin of the snakes or a recent, natural northern expansion cannot be excluded.
... The current distribution of the Agile frog covers most of the territory of continental Europe, with its western range border in northern Spain and the Pyrenees, and eastern border running through Poland, Ukraine, Romania, south to Turkey. The most northern populations, separated from the continuous range, are located in northern Germany, Denmark and southern Sweden; the frog is absent from Great Britain and Ireland (Fig. 2, Mołoniewicz et al., 2021;Sillero et al., 2014). In the south, the range is almost continuous in the Apennine and Balkan Peninsulas; peripheral populations are also found in western and northern Turkey (Vences et al., 2013). ...
... For instance, in Poland the Agile frog had first been officialy confirmed in 1987 (Rafiński et al., 1987), although there were some earlier, less precise observations (Borkin, 1977;Kowalski, 1970;Tenenbaum, 1913). Over the last 20 years the frog had been recorded in many new locations , Głowaciński & Sura, 2018, for example recently in the Roztocze region (Mołoniewicz et al., 2021). A three-year survey of breeding ponds in Roztocze resulted in the discovery of 40 previously unknown breeding sites. ...
... The results of species distribution modelling could help focus field studies aimed at documenting the range of the Agile frog in Poland. Mołoniewicz et al. (2021;changed). Red squares -Societas Europaea Herpetologica (SEH) atlas (Sillero et al., 2014); yellow squaresnew observations in Poland. ...
The Agile frog (Rana dalmatina) is a Western Palearctic brown frog species that is widely distributed on the European continent. Its range covers mostly southern and central Europe, however some populations can be found in more distant countries, such as Sweden or Turkey. The aim of this study was to model and to analyse the distribution of the Agile frog in Europe with emphasis on Central Europe and Poland, as the northeastern part of its range seems to be understudied. Altogether, 1217 records of the species presence were gathered and combined with environmental data in Maximum Entropy Modelling (Maxent) procedure. Two models were created-climatic one, that was based on 7 selected WordClim v.2 predictors, and a mixed one that used same climatic variables plus one suitable-habitat variable derived from Corine Land Cover. Logistic output was converted into suitable/ unsuitable output with the use of maxSSS threshold. Both of the models showed that the potential distribution of the Agile frog in Europe is much wider than its known range, mostly at northeastern and southeastern range borders. Detailed analysis of the area of Poland indicated 78% of the territory of the country suitable by the climatic model, and 51% by the mixed model. Based on the results, some areas were suggested for further field studies. These include, amongst others, areas situated in Lubusz, Lower Silesian and Opole Voivodeships. Reasons for Agile frog being a rare species in Poland, even though the climatic conditions seem to be adequate, are being elaborated in the discussion along with the model constraints.
Amphibian distribution and conservation i the Stobrawa Landscape Park
The agile frog (Rana dalmatina Fitzinger in Bonaparte, 1839) is quite widespread in Europe, and in Ukraine it is located on the northeastern border of its natural range (Pysanets, 2014; Dufresnes, 2019). This amphibian is included in all editions of the Red Book of Ukraine. This is probably the result of a lack of data on the distribution and status of populations of the species in Ukraine – for a long time it was believed that the agile frog occurs exclusively in Transcarpathia (Shcherbak and Shcherban, 1980; Kuzmin, 1999). And only in the beginning of the 20th century it has become reliably known that the species is also distributed to the northeast of the Carpathian Mountains, in particular in Ciscarpathians, Bessarabia and Podillia (Pisanets, Reminny, 2008; Smirnov, 2013; Smirnov, Buchko, 2018). During the last decade the presence of agile frogs has been also confi rmed multiple times on the territories to the northeast of its documented distribution area in Ukraine (Smirnov, 2013). Recently collected data confirm occurrence of R. dalmatina in the Lviv region. The species was fi rst introduced to the region ("Pieniaky v pow. brodskim") in the early 20th century (Bayger, 1909). A fi nd was later made in the vicinity of Morshyn (Khozatskii, 1950), and three decades later information was added about another location, the town of Skole, which has not yet been confi rmed (Red Book, 1980). Thus, at the end of the 20th century, three locations were known for the Lviv region, where R. dalmatina seemed to be registered. However, the exact distribution boundaries of agile frogs’ distribution here was considered questionable (Shcherbak and Shcherban, 1980; Kuzmin, 1999).
