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Plecotu s et al. 15-16 (2013): 23­26 _____________________________________________________________________________

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- , , 2, ( ) - 198504; batsnwr@mail.ru 2005­2009 . . , . , ( ) , Nyctalus noctula Pipistrellus nathusii. : , , .

, (Ahlen 1997; Ptersons 2004; KyherЖinen et al. 2009; Masing 2009). . 2005­2009 . . , XX -. 20 (. 1).

. 1. . 1 ( ) ­ ; 2­4 ­ ; 5­8 ­ . Fig. 1. Observation sites. 1 (straight lines) ­ embankment; 2­4 ­ observation sites on the coast; 5­8 ­ forti-fication buildings.

, (Nyctalus noctula) (Pipistrellus nathusii),


24 D 100 (Pettersson Elektronik AB) . 0:30 3:00. 20­21 28­30 , , 5­7 (. 2). , , . . 26­27 (. 3).

90 80 70 60 50 40 30 20 10 0

200 5 200 6 200 7 200 8 200 9

3.09

18.08

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. 2. (Nyctalus noctula), 2005­2009 . Fig. 2. Number of noctules (Nyctalus noctula) recorded above the embankment in 2005­2009.

, ( 15 ), . 2 , . . (Vespertilio murinus), (Eptesicus nilssonii).

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Plecotu s et al. 15-16 (2013)

25

60 50 40 30 20 10 0 2005 2006 2007 2008 2009

3.09

18.08

22.08

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. 3. (Pipistrellus nathusii), 2005­2009 . Fig. 3. Number of Nathusius' pipistrelles (Pipistrellus nathusii) recorded above the embankment in 2005­2009.

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Ahlen I. 1997. Migratory behavior of bats at south Swedish coast. ­ Zeitschrift fЭr SДugetierkunde 62: 375­380. KyherЖinen E.M., Vasko V., Hagner-Wahlstein N., Inberg E., Kosonen E., Lappalainen M., Lilley T., Lindstedt R., Liukko U.M., Norrdahl K. 2009. Bat migration

30.08

7.09


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studies in Finland 2008. ­ In: Abstr. of the 1st International Symp osium on Bat Migrati on, Berlin, Germany, 16th ­ 18th of January, 2009: 61. Masing M. 2009. A review of bat migration studies carried out in Estonia. ­ In: Abstr. of the 1st Internati onal S ymp osium on Bat Migrati on, Berlin, Germany, 16th ­ 18th of January, 2009: 63. Ptersons G. 2004. Seasonal migrations of north-eastern populations of Nathusius' bat Pipistrellus nathusii (Chiroptera). ­ Myotis 41-42: 29­56.

SUMMAR

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Chistyakov D.V. 2013. The role of the embankment near St. Petersburg in bat migrations. ­ Plecotus et al. 15-16: 23­26. It is well known, that bats use the coastal line of different reservoirs as a way of autumn migrations. The Gulf of Finland is not an exception. We observed bat migration in this area during 2005­2009 years. Most of our findings, however, were connected to the artificial levee which was built in the second half of the 20th century near St. Petersburg. In the ten-day period of August, we constantly observed the migration stream of such species as Nyctalus noctula and Pipistrellus nathusii through that levee. This fact was established by means of an ultrasound detector and visual observations. It should be noted, that bats were not recorded in this area during the summer peri od. Cases of finds of the bats concer ned only t he end of this seas on. Interestingly also, that during the time of research we did not find any migratory activity of bats on the southern coast of the Gulf of Finland. We proposed that the artificial levee allows bats to do the way of their migration shorter. However, the ways of bat migrations in the past are not clear now. K e y w o r d s : bats, migration, the Gulf of Finland.