KFU. Card publication. Channel Gradient as a Factor in the Distribution of Beaver Dams and Ponds on Small Rivers: A Case Study in the Northern Extremity of the Volga Upland, the East European Plain

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CHANNEL GRADIENT AS A FACTOR IN THE DISTRIBUTION OF BEAVER DAMS AND PONDS ON SMALL RIVERS: A CASE STUDY IN THE NORTHERN EXTREMITY OF THE VOLGA UPLAND, THE EAST EUROPEAN PLAIN

Form of presentation

Articles in international journals and collections

Year of publication

2023

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Authors, employees of KFU

Gusarov Artem Viktorovich, author

Sharifullin Aydar Gamisovich, author

Other authors

Beylich Achim , author

Lavrova Olga , author

Bibliographic description in the original language

Sharifullin, A.G.; Gusarov, A.V.; Lavrova, O.A.; Beylich, A.A. Channel Gradient as a Factor in the Distribution of Beaver Dams and Ponds on Small Rivers: A Case Study in the Northern Extremity of the Volga Upland, the East European Plain // Water (Switzerland), 2023, 15, 2491.

Annotation

A very noticeable increase in the beaver population (mainly the Eurasian beaver (Castor fiber L.)) in the East European Plain since the end of the 20th century through reintroduction contributed to the emergence of a large number of beaver dams and ponds, which resulted in the transformation of the channels and the hydrological regime of small rivers. In this paper, for the first time in the Middle Volga region, regularities in the distribution of beaver dams and ponds on small rivers were revealed based on a topographic survey of the river channel, regulated by beaver activity in recent decades. The materials of the paper were obtained during field (geodetic) work in August and September of 2022 in the valleys of two small rivers typical for the north of the Volga Upland, Morkváshinka River (16.6 km) and Morkváshka River (7.8 km), with subsequent statistical processing. According to the results obtained, all the dams we encountered were located in the sections of their channels with relatively small (up to 1%) and medium (1–3%) average gradients. In the upper reaches of the rivers, the expansion of beaver activity is limited to the large gradients of their channels. Along the entire length, there is an alternation of sectors with a “natural” (not regulated by beavers) channel and a cascade of beaver ponds. Drained (at the time of the survey) sectors without dams, as well as those with preserved and destroyed dams, were also identified on the Morkváshinka River. On the whole, 26–48% of the length of the studied rivers has been transformed by beaver activity. The average number of dams per kilometer of the watercourse is 3.7–5.1. The most favorable channel gradients for beaver activity are 3.6–16.6 m/km, or 0.36–1.66%. The average gradient of the channel, above which no beaver dams and related ponds were found in these rivers, is 30 m/km, or 3%. An increase in the channel gradient upstream of the rivers is reflected in the size of beaver dams and ponds. The beaver dams and ponds are slightly larger in the sections of the rivers with a relatively small average gradient than in the sections with a medium average gradient of the channel.

Keywords

Castor fiber L.; river channel; longitudinal profile; GNSS; Morkváshinka River; Morkváshka River; Middle Volga region; Republic of Tatarstan

The name of the journal

Water (Switzerland)

URL

https://www.mdpi.com/2073-4441/15/13/2491

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=283960&p_lang=2

Resource files

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F_2023_Water_15_02491.pdf	16,89	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Gusarov Artem Viktorovich	ru_RU
dc.contributor.author	Sharifullin Aydar Gamisovich	ru_RU
dc.contributor.author	Beylich Achim	ru_RU
dc.contributor.author	Lavrova Olga	ru_RU
dc.date.accessioned	2023-01-01T00:00:00Z	ru_RU
dc.date.available	2023-01-01T00:00:00Z	ru_RU
dc.date.issued	2023	ru_RU
dc.identifier.citation	Sharifullin, A.G.; Gusarov, A.V.; Lavrova, O.A.; Beylich, A.A. Channel Gradient as a Factor in the Distribution of Beaver Dams and Ponds on Small Rivers: A Case Study in the Northern Extremity of the Volga Upland, the East European Plain // Water (Switzerland), 2023, 15, 2491.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=283960&p_lang=2	ru_RU
dc.description.abstract	Water (Switzerland)	ru_RU
dc.description.abstract	A very noticeable increase in the beaver population (mainly the Eurasian beaver (Castor fiber L.)) in the East European Plain since the end of the 20th century through reintroduction contributed to the emergence of a large number of beaver dams and ponds, which resulted in the transformation of the channels and the hydrological regime of small rivers. In this paper, for the first time in the Middle Volga region, regularities in the distribution of beaver dams and ponds on small rivers were revealed based on a topographic survey of the river channel, regulated by beaver activity in recent decades. The materials of the paper were obtained during field (geodetic) work in August and September of 2022 in the valleys of two small rivers typical for the north of the Volga Upland, Morkváshinka River (16.6 km) and Morkváshka River (7.8 km), with subsequent statistical processing. According to the results obtained, all the dams we encountered were located in the sections of their channels with relatively small (up to 1%) and medium (1–3%) average gradients. In the upper reaches of the rivers, the expansion of beaver activity is limited to the large gradients of their channels. Along the entire length, there is an alternation of sectors with a “natural” (not regulated by beavers) channel and a cascade of beaver ponds. Drained (at the time of the survey) sectors without dams, as well as those with preserved and destroyed dams, were also identified on the Morkváshinka River. On the whole, 26–48% of the length of the studied rivers has been transformed by beaver activity. The average number of dams per kilometer of the watercourse is 3.7–5.1. The most favorable channel gradients for beaver activity are 3.6–16.6 m/km, or 0.36–1.66%. The average gradient of the channel, above which no beaver dams and related ponds were found in these rivers, is 30 m/km, or 3%. An increase in the channel gradient upstream of the rivers is reflected in the size of beaver dams and ponds. The beaver dams and ponds are slightly larger in the sections of the rivers with a relatively small average gradient than in the sections with a medium average gradient of the channel.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Channel Gradient as a Factor in the Distribution of Beaver Dams and Ponds on Small Rivers: A Case Study in the Northern Extremity of the Volga Upland, the East European Plain	ru_RU
dc.type	Articles in international journals and collections	ru_RU