2019 Ecosystem Transformation 2 (1), 28–34
Long-term dynamics of the area overgrown by helophytic vegetation in Lake Pskov
Kristina B. Mikhailova , Sergey G. Mikhalap
DOI: https://doi.org/10.23859/estr-180711Volume: 2
Number: 1
Pages: 28–34
Received: 11.07.2018
Accepted: 11.10.2018
Available online: 18.02.2019
Published: 15.03.2019
ISSN 2619-094X Print
ISSN 2619-0931 Online
This paper presents the results of a spatiotemporal analysis of the dynamics of the overgrowing of helophytes in the water area of Lake Pskov (Pikhva) for the period 1988 to 2017. Using the classification procedure for Landsat satellite images for different years, zones of overgrowing by helophytes in the coastal zone and islands of Lake Pskov were identified. During this period, no clear trend towards overgrowing of Lake Pskov by air and water vegetation was observed. Helophytes develop annually on the same sites. The positive dynamics of overgrowing of individual areas is local, as shown by the example of the Talabsk Islands, where the zone of overgrowth between 2007 and 2017 increased by 7.5 ha. The composition of the dominants of the main communities of the coastal aquatic vegetation did not change significantly over the years. The average value of the area occupied by helophytes is 4.14%. The results obtained are fundamental for determining the overgrowth of Lake Pskov within the framework of the ongoing environmental monitoring of the PeipsiPikhva Lake Complex.
Kristina B. Mikhailova
State Research Institute on Lake and River Fisheries, St. Petersburg (GosNIORKh), Pskov Branch, junior research scientist
Ul. M. Gorkogo 13, Pskov, Pskov Region, 180007 Russia
kristina.pismo@yandex.ru
Sergey G. Mikhalap
Pskov State University, senior lecturer
Ul. Sovetskaya 21, Pskov Region, Pskov, 180000 Russia
sgmikhalap@gmail.com
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Keywords: Lake Pskov, helophytes, overgrowing, geographic information system (GIS), satellite imagery, Landsat
For citation: Mikhailova, K.B., Mikhalap, S.G., 2019. Longterm dynamics of the area overgrown by helophytic vegetation in Lake Pskov. Ecosystem Transformation 2 (1), 28–34.