Structure Transformation of the Anuran Amphibian Spawning Communities in Floodplain Lakes of the Medveditsa River Valley (Saratov Region) under Conditions of Long-Term Reduction of Water Content
The structure of spawning taxocenoses of anuran amphibians in five floodplain lakes of the Medveditsa river valley in 2009-2018 is analysed. Two near-terrace lakes (Lebyazhye and Koblovo) and three lakes of the central floodplain (Sadok, Kruglen’koye, and Cherepashie) were used as model ones. The degradation of the populations of the three most numerous species, a decrease in the dominance degree of the common spadefoot toad were established. Degradation is more characteristic of species with a longerer distance of spawning migrations - the severity of changes consistently decreases in the row of species: Pelophylax ridibundus → Pelobates fuscus → Bombina bombina. Indices of the structure of amphibian communities in the near-terrace lakes Lebyazhye and Koblovo were stable. Against the background of low water content and unstable hydrological regime of the central floodplain lakes with a survey duration of five or more years, three periods were established to characterize the structure of spawning amphibian taxocenoses, namely: a stable structure, a sharp decrease in dominance and an increase in evenness, and an increase in the variability of the main attributes of the structure. At the end of the third period, which characterizes the structure of taxocenoses, some stabilization of the main parameters was noted with an extremely low number of mature individuals of all amphibian species. The high level of spring flood of the Medveditsa river in 2018 determined the beginning of the exit from the abnormally long period of low water content of the spawning lakes in the floodplain (from 2009 till 2017) and their functioning in the hydrological regime as temporary water bodies. The sudden increase in water content of the floodplain lakes and the extension of their hydroperiod allow the beginning of the recovery process of the population size and community structure of anuran amphibians to be noted.
Antonyuk E. V., Panchenko I. M. Influence of the hydrological regime of the river Oka on the state of the fauna of amphibians in the Oka reserve. Samarskaya Luka: Problems of Regional and Global Ecology, 2017, vol. 26, no. 3, pp. 121–126 (in Russian).
Ashkavandi S., Gharzi A., Abbassi M. Age determination by skeletochronology Rana ridibunda (Anura: Amphibia). Asian J. Experimental Biol. Science, 2012, vol. 3, no. 1, pp. 156–162.
Babenko L. A., Pashchenko Yu. I., Lyalyushko D. M. Role of Sense Organs in Orientation “by Homing” in Constant-Water Amphibians. Vestnik Zoologii, 1973, no. 2, pp. 30–32 (in Russian).
Blab J. Biologie, Ökologie und Schutz von Amphibien. Schriftenreihe für Landschaftsplege und Naturschutz. Bonn, Kilda Verlag, 1986, Bd. 18. 150 S.
Blaustein A. R., Walls S. C., Bancroft B. A., Lawler J. J., Searle C. L., Gervasi S. S. Direct and Indirect Effects of Climate Change on Amphibian Populations. Diversity, 2010, vol. 2, no. 2, pp. 281–313.
Bonk M., Pabijan M. Changes in a Regional Batrachofauna in South-Central Poland over a 25 year period. North Western J. of Zoology, 2010, vol. 6, no. 2, pp. 225–244.
Carey C., Alexander M. A. Climate change and amphibian declines: is there a link? Diversity and Distributions, 2003, vol. 9, no. 2, pp. 111–121.
Church D. R. Role of Current Versus Historical Hydrology in Amphibian Species Turnover within Local Pond Communities. Copeia, 2008, vol. 2008, no. 1, pp. 115–125.
Cogălniceanu D., Miaud C. Population age structure and growth in four syntopic amphibian species inhabiting a large river floodplain. Canadian J. of Zoology, 2003, vol. 81, no. 6, pp. 1096–1106.
Ficetola F. G., Bernardi F. de. Amphibians in a human-dominated landscape: the community structure is related to habitat features and isolation. Biological Conservation, 2004, vol. 119, no. 2, pp. 219–230.
Gardner T. Declining Amphibian Populations: a Global Phenomenon in Conservation Biology. Animal Biodiversity and Conservation, 2001, vol. 24, no. 2, pp. 25–44.
Grant E. H. C., Miller D. A. W., Schmidt B. R., Adams M. J., Amburgey S. M., Chambert T., Cruickshank S. S., Fisher R. N., Green D. M., Hossack B. R., Johnson P. T. J., Joseph M. B., Rittenhouse T. A. G., Ryan M. E., Waddle J. H., Walls S. C., Bailey L. L., Fellers G. M., Gorman T. A., Ray A. M., Pilliod D. S., Price S. J., Saenz D., Sadinski W., Muths E. Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines. Scientific Reports, 2016, vol. 6, pp. 25625. DOI: 10.1038/srep25625
Gray M. J., Smith L. M., Leyva R. I. Influence of agricultural landscape structure on a Southern High Plains, USA, amphibian assemblage. Landscape Ecology, 2004, vol. 19, no. 7, pp. 719–729.
Hossack B. R. Amphibian dynamics in constructed ponds on a wildlife refuge: developing expected responses to hydrological restoration. Hydrobiologia, 2017, vol. 790, no. 1, pp. 23–33.
Ivanov G. A. Reproduktivnaya ekologiya beskhvostykh amfibiy v doline r. Medveditsy (Saratovskaya oblast) [Reproductive Ecology of Anuran Amphibians in Medveditsa River valley (Saratov Region)]. Diss. Cand. Sci. (Biol.). Togliatti, 2017. 171 p. (in Russian).
Ivanova N. L. Growth characteristics and rates of the mash frog Pelophylax ridibundus Pall. introduced into water bodies of the Middle Urals. Biology Bulletin, 2017, vol. 44, no. 4, pp. 412–416.
Kireeva M. B. Vodnyy rezhim rek basseyna Dona v usloviyakh menyayushchegosya klimata [Water regime of Don basin rivers in climate change conditions]. Diss. Cand. Sci. (Geogr.). Moscow, 2013. 211 p. (in Russian).
Kovar R., Brabec M., Vita R., Bocek R. Spring migration distances of some Central European amphibian species. Amphibia – Reptilia, 2009, vol. 30, no. 10, pp. 367–378.
Kyriakopoulou-Sklavounou P., Stylianou P., Tsiora A. A skeletochronological study of age, growth and longevity in a population of the frog Rana ridibunda from southern Europe. Zoology, 2008, vol. 111, no. 1, pp. 30–36.
Leite-Filho E., Oliveira F. A. de, Eloi F. J., Liberal C. N., Lopes A. O., Mesquita D. O. Evolutionary and Ecological Factors Influencing an Anuran Community Structure in an Atlantic Rain-forest Urban Fragment. Copeia, 2017, vol. 105, no. 1, pp. 64–74.
Lizana M., Perez-Mellado V., Ciudad M. J. Analysis of the structure of an amphibiam com-munity in the central system of Spain. Herpetological J., 1990, vol. 1, pp. 435–446.
McMenamin S. K., Hadley E. A., Wright C. K. Climatic change and wetland desiccation cause amphibian decline in Yellowstone National Park. Proceedings of the National Academy of Sciences of the USA, 2008, vol. 105, no. 44, pp. 16988–16993.
Megarran E. Ecological Diversity and its Measurement. Moscow, Mir Publ., 1992. 162 p. (in Russian).
Nyström P., Hansson J., Månsson J., Sundstedt M., Reslow C., Broström A. A documented amphibian decline over 40 years: Possible causes and implications for species recovery. Biological Conservation, 2007, vol. 138, no. 3–4, pp. 399–411.
Pechmann J. H. K., Scott D. E., Gibbons J. W., Semlitch R. Influence of wetland hydrope-riod on diversity and abundance of metamorphosing juvenile amphibians. Wetlands Ecology and Management, 1989, vol. 1, no. 1, pp. 3–11.
Polukonova A. V., Djomin A. G., Yermokhin M. V., Tabachishin V. G. New Gaplotypes of Spadefoot Toad Pelobates fuscus (Laurenti, 1768) from Populations in Medveditsa River Valley (Saratov District). Inland Water Biology. Proceedings XV School-Conference of Young Scientists. Kostroma, Kostromskoy pechatny dom, 2013 a, pp. 304–308 (in Russian).
Polukonova A. V., Djomin A. G., Yermokhin M. V., Tabachishin V. G. A Molecular-Genetic Study of Spadefoot Toad Pelobates fuscus (Laurenti, 1768) Local Populations from the Medveditsa River Valley (Saratov Region) by mtDNA – CytB gene. Current Studies in Herpetology, 2013 b, vol. 13, iss. 3–4, pp. 117–121 (in Russian).
Rot-Nikčević I., Sidorovska V., Džukić G., Kalezić M. L. Sexual size dimorphism and life history traits of two european spadefoot toads (Pelobates fuscus and P. syriacus) in allopatry and sympatry. Annales, Ser. Historia Naturalis, 2001, vol. 11, no. 1, pp. 107–120.
Schlyakhtin G. V., Tabachishin V. G., Yermokhin M. V. History and Main Directions of Her-petofauna Investigations at Northern Part of Lower Volga Region (to 105-year of Department of Animal Morphology and Ecology of Saratov State University). Current Studies in Herpetology, 2014, vol. 14, iss. 3–4, pp. 137–146 (in Russian).
Semlitsch R. D., Scott D. E., Pechmann J. H., Gibbons J. W. Structure and Dynamics of an Amphibian Community. In: Long-Term Studies of Vertebrate Communities. San Diego, Academic Press, 1996, pp. 217–248.
Shlyakhtin G. V., Tabachishin V. G., Kaybeleva E. I., Mosolova E. Yu., Yermokhin M. V. Current Status of the Batrachological Collection of the Zoological Museum of Saratov University. Current Studies in Herpetology, 2015, vol. 15, iss. 3–4, pp. 153–159 (in Russian).
Shnitnikov A. V. Intrasecular fluctuations in the level of steppe lakes of Western Siberia and Northern Kazakhstan and their dependence on climate. Transactions of the Laboratory of Limnology, USSR Academy of Sciences. Moscow, 1950, vol. 1, pp. 28–129 (in Russian).
Skelly D. K., Werner E. E., Cortwright S. A. Long-Term Distributional Dynamics of a Michigan Amphibian Assemblage. Ecology, 1999, vol. 80, no. 7, pp. 2326–2337.
Snodgrass J. W., Komoroski M. J., Bryan A. L., Burger J. Relationships among isolated wet-land size, hydroperiod, and amphibian species richness: implications for wetland regulations. Conservation biology, 2000, vol. 14, no. 2, pp. 414–419.
Todd B. D., Scott D. E., Pechmann J. H. K., Gibbons J. W. Climate change correlates with rapid delays and advancements in reproductive timing in an amphibian community. Proceedings of the Royal Society B: Biological Sciences, 2011, vol. 278, no. 1715, pp. 2191–2197.
Wells K. D. The ecology and behavior of amphibians. Chicago, The University of Chicago Press, 2007. 1162 p.
Yermokhin M. V. Ekologicheskaya struktura marginalnykh uchastkov rechnykh biotsenozov v perekhodnoy zone voda – susha [Ecological Structure of Marginal Patches of River Biocenoses in Water – Land Transitional Zone]. Diss. Cand. Sci. (Biol.). Saratov, 2000. 192 p. (in Russian).
Yermokhin M. V. Methods for Studiing the Flows of Matter and Energy Formed by Animals between Aquatic and Terrestrial Ecosystems in the River Valleys. Ecosystems of Small Rivers: Biodiversity, Ecology, Conservation. Proceedings of lectures of II All-Russia School-Conference. Yaroslavl, Filigran Publ., 2014, vol. 1, pp. 42–56 (in Russian).
Yermokhin M. V., Tabachishin V. G. Reproductive Parameters of Females Pelobates fuscus (Laurenti, 1768) as Functions of Size and Weight Characteristics. Current Studies in Herpetology, 2011 a, vol. 11, iss. 1–2, pp. 28–39 (in Russian).
Yermokhin M. V., Tabachishin V. G. Abundance Accounting Result Convergence of Pelobates fuscus (Laurenti, 1768) Migrating Toadlets at Full and Partitial Enclosing of Spawning Waterbody by Drift Fences with Pitfalls. Current Studies in Herpetology, 2011 b, vol. 11, iss. 3–4, pp. 121–131 (in Russian).
Yermokhin M. V., Tabachishin V. G., Ivanov G. A. Optimisation of Method of Amphibians Accounting by Drift Fences with Pitfalls. In: Problems of Marginal Structures of Biocenoses Investigations. Saratov, Izdatelstvo Saratovskogo universiteta, 2012, pp. 157–163 (in Russian).
Yermokhin M. V., Ivanov G. A., Tabachishin V. G. Spawning Migration Phenology of Anuran Amphibians in the Medveditsa River Valley (Saratov Region). Current Studies in Herpetology, 2013, vol. 13, iss. 3–4, pp. 101–111 (in Russian).
Yermokhin M. V., Tabachishin V. G., Ivanov G. A. Spawning migration phenology of the spadefoot toad Pelobates fuscus (Pelobatidae, Amphibia) in the valley of the Medveditsa River (Saratov Oblast). Biology Bulletin, 2015, vol. 42, no. 10, pp. 931–936.
Yermokhin M. V., Tabachishin V. G., Ivanov G. A. Long-term Dynamics of the Size-Weight and Sexual Structure in Populations of Pelobates fuscus (Anura, Pelobatidae) in the Medveditsa River Valley (Saratov Region). Current Studies in Herpetology, 2016, vol. 16, iss. 3–4, pp. 113–122 (in Russian).
Yermokhin M. V., Tabachishin V. G., Ivanov G. A. Phenological changes in the wintering of Pelobates fuscus (Pelobatidae, Amphibia) in the climate transformation conditions in the Northern Lower Volga Region. Biology Bulletin, 2017, vol. 44, no. 10, pp. 1215–1227.
Yilmaz N., Kutrup B., Çobanoğlu Ü., Özoran Y. Age determination and some growth parameters of a Rana ridibunda population in Turkey. Acta Zoologica Academiae Scientiarum Hungaricae, 2005, vol. 51, no. 1, pp. 67–74.
Zhelev Z., Arnaudov A., Boyadzhiev P. Colour polymorphism, sex ratio and age structure in the populations of Pelophylax ridibundus and Pseudepidalea viridis (Amphibia: Anura) from anthropogenically polluted biotopes in southern Bulgaria and their usage as bioindicators. Trakia J. Science, 2014, no. 1, pp. 1–12.
