Details

Autor(en) / Beteiligte

• Belkin, V. V.
• Ilyukha, V. A.
• Khizhkin, E. A.
• Lyapunov, A. N.
• Tolstoguzov, A. O.

Titel

Chiropterans (Chiroptera) in Lake–River Systems of Northern European Russia

Ist Teil von

• Biology bulletin of the Russian Academy of Sciences, 2023-12, Vol.50 (8), p.2034-2044

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In 2016–2020, we studied the species composition and distribution of chiropterans in the Republic of Karelia and Arkhangelsk oblast, as well as patterns in the use of different categories of waterbodies by bats. The method of fixed-point sampling using a passive ultrasonic detector was tested on 90 lakes and 192 rivers during nighttime car transect surveys (5810 km). Fourteen bat censuses were carried out on lake shores and at river banks by mist netting and ultrasonic detection, and 15 censuses with a detector were performed on a model water-body from aboard a motorboat. Surveys of standing lakes and streams yielded records of 234 cases of bat identification. Surveys of the model waterbody produced records of 88 cases of the identification of bats, and 90 bats were captured in mist nets. All bat species known for the region were recorded by the lake–river systems, and their northernmost occurrences were recorded: Myotis nattereri and M. brandtii / mystacinus at 64.120° N , M. daubentonii and M. dasycneme at 64.870° N, and Eptesicus nilssonii at 66.275° N. Ultrasound signals of Plecotus auritus and Nyctalus noctula were recorded on the lake–river systems of Karelia up to 66.275° N, and Vespertilio murinus signals were found up to 65.218° N, which is much farther north than the distributions of these species indicated on the International Union for the Conservation of Nature (IUCN) maps (IUCN Red List). The factor determining the relative abundance of chiropterans along lake–river systems of Northern European Russia is the “species affiliation” (η = 89.7%, F = 8.73, p < 0.01). A common pattern for all categories of waterbodies in the region and its parts is the prevalence of E. nilssonii in bat communities. The frequency of occurrence of bats in the northern lake–river systems is 56.4%, being determined by the “species affiliation” factors (η = 47.0%, F = 15.57, p < 0.0001), the geographic locations of the region’s parts (η = 22.9%, F = 52.54, p = 0.001), and the combined effect of these factors (η = 16.9%, F = 5.54, p < 0.05). We demonstrate how the occurrence and relative abundance of bats (%) depend on certain environmental factors and highlight some regional and zonal features of the “waterbodies–bats” system.