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Favna kačjih pastirjev (Odonata) Mirnske doline in ovrednotenje naravovarstveno pomembnih območij
Bahor, Maja (Author), Verovnik, Rudi (Mentor) More about this mentor... This link opens in a new window

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Abstract
Mirnska dolina je bila v preteklosti slabše odonatološko raziskana, do leta 2015 je bilo tu popisanih 37 vrst. Namen magistrske naloge je bil popisati prisotnost kačjih pastirjev na območju Mirnske doline in ovrednoti ustreznost obstoječih Natura 2000 območij za vrsti koščični škratec (Coenagrion ornatum) in veliki studenčar (Cordulegaster heros), ki sta uvrščeni na Prilogo Direktive o habitatih. Opravili smo 47 terenskih dni v letih 2015 in 2016, v katerih smo zbrali podatke o prisotnosti 47 vrst kačjih pastirjev na 119 vzorčnih mestih. Potrdili smo prisotnost vseh prej znanih vrst in na novo zabeležili deset vrst: grmiščna zverca (Lestes barbarus), obrežna zverca (Lestes dryas), prisojni zimnik (Sympecma fusca), suhljati škratec (Coenagrion pulchellum), bledi kresničar (Ischnura pumilio), višnjeva deva (Aeshna affinis), deviški pastir (Aeshna isoceles), zgodnji trstničar (Brachytron pratense), nosna jezerka (Epitheca bimaculata), sredozemski kamenjak (Sympetrum meridionale). Potrdili smo razvoj 40 vrst kačjih pastirjev na območju. Koščični škratec ima v Mirnski dolini eno najmočnejših populacij v Sloveniji, Natura 2000 območja pa ne obsegajo celotnega območja poselitve. Za vrsto smo opredelili naravovarstveno najpomembnejša območja glede na gostoto odraslih osebkov in potrjen razvoj vrste. Veliki studenčar je pogost v pritokih Mirne in njenem zgornjem delu. Ribnik Blato je z 32 vrstami kačjih pastirjev ena najpestrejših voda v Sloveniji.

Language:Slovenian
Keywords:kačji pastirji, Odonata, Mirna, naravovastvo
Work type:Master's thesis/paper (mb22)
Organization:BF - Biotechnical Faculty
Year:2017
COBISS.SI-ID:4511567 Link is opened in a new window
Views:331
Downloads:485
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Secondary language

Language:English
Title:Dragonfly and damselfly fauna of the Mirna River Valley and evaluation of nature conservation areas
Abstract:
Mirna Valley was odonatologically poorly studied with 37 species recorded up to 2015. The purpose of the master's thesis was to study the diversity of the dragonfly fauna in the area of the Mirna Valley and evaluate the adequacy of the current Natura 2000 areas for Coenagrion ornatum and Cordulegaster heros that are listed in the Annex of the Habitats Directive. During the survey 47 field days were conducted in the years 2015 and 2016. We collected data on the presence of 47 species of dragonflies at 119 sampling sites. We confirmed the presence of all the previously known species and recorded ten new species: Lestes barbarus, Lestes dryas, Sympecma fusca, Coenagrion pulchellum, Ischnura pumilio, Aeshna affinis, Aeshna isoceles, Brachytron pratense, Epitheca bimaculata and Sympetrum meridionale. We confirmed the reproduction of 40 dragonfly species in the Mirna Valley. Coenagrion ornatum has one of the strongest populations in Slovenia in the Mirna Valley, however Natura 2000 areas do not include its whole distribution area. For the species we defined the most important nature conservation areas according to the density of adult specimens and the confirmed reproduction. Cordulegaster heros is frequent in the influent streams and in the upper part of the river Mirna. With 32 recorded dragonfly species the fish pond Blato has one of the highest diversity of dragonfly species in Slovenia.

Keywords:kačji pastirji, Odonata, Mirna, naravovastvo

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