Ábrahám Levente: Biomonitoring a Dráva folyó magyarországi szakasza mentén 2000-2004 - Natura Somogyiensis 7. (Kaposvár, 2005)

Dombi, Imre: Bat monitoring along the Drava River (Mammalia: Chiroptera) - Denevér-monitoring a Dráva mentén (Mammalia: Chiroptera)

DOMBI I.: BAT MONITORING ALONG THE DRAVA VALLEY 151 was confirmed. It seems to have a steady stock in the Lankóci forest and in the Mérus forest in Babócsa. In Vízvár only one old female was captured that assured the reproduction of the species. Natterer's bat (Myotis nattereri) Not a common species. It prefers mountainous homeranges, it only has sporadic data in the plains. The reason for this is the disappearance of old, hardwood forests in the floodplain and its roosting sites with them. Along the Drava it is present and its reproduction is proved in the Lankóci forest, in Vízvár and in the Mérus forest in Babócsa. Its presence indicates good, natural habitats, but its stock is most probably vulnerable. Whiskered bat {Myotis mystacinus) Not a common species. It prefers mountainous homeranges, it only has sporadic data in the plains. It is due to the disappearance of the old, hardwood forests in the floodplain, hardwood mixed and grove forests. Along the Drava its presence and reproduction is known in the floodplain of Drava next to Ortilos and Vízvár, in the Lankóci forest, and the Mérus forest in Babócsa. Its presence indicates good, natural habitats, but they are most probably vulnarable because of the shrinking homerange. Brandt's bat {Myotis brandti) Not a common species. It prefers mountainous homeranges, it is rather rare in the plains. Its habitat demands are rather lesser-known, but based on its occurrence data so far, the best living space for the species is the old hardwood, the hardwood mixed and mosaic-like forests. Because these areas have become rather scarce recently the species is vulnarable. Along the Drava its presence and reproduction is known in all sampling areas. Its presence indicates good, natural habitats. Greater mouse-eared bat {Myotis myotis) Rarefying species. In the summer it lives in buildings in the winter it draws in caves. Females make up big parental colonies, while the males remain lonesome, or live in colonies of a few individuals. Depending on the level of disturbance the colony may use more suitable buildings. Strangely enough, a considerable part of its nutrition are beetles, moreover mostly from the ground beetles, family Carabidae, since it often feeds from the ground. In the sampling area its 150 individual-colony was found in the Catholic church in Babócsa, and a 40-50 individual-colony in the Protestant church in Somogyudvarhely. Occasionally it occurs in the Catholic church in Berzence and in Bolhó and in the Lutheran church in Nemespátró. Lesser mouse-eared bat {Myotis blythi) It lives in buildings and caves. Its life-style is similar to the greater mouse-eared bat {Myotis myotis), they often create mixed colonies. Along the Drava the species did not have any data until July 2005. Colonies were not found in any of the buildings, so the turning-up of its three individuals from the Lankóci forest is quite outstanding and interesting.