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Razširjenost in potencialna ogroženost kačjih pastirjev (Odonata) na območju Bloške planote : magistrsko delo
ID Kozina, Aleksander (Author), ID Verovnik, Rudi (Mentor) More about this mentor... This link opens in a new window, ID Fišer, Cene (Reviewer), ID Zagmajster, Maja (Member of the commission for defense)

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Abstract
Bloška planota je eno od bolje odonatološko raziskanih območij v Sloveniji, vendar pa je bila večina podatkov pridobljenih konec prejšnjega stoletja. Namen magistrske naloge je bil, da raziščemo trenutno razširjenost kačjih pastirjev na območju in preverimo njihovo morebitno ogroženost. V ta namen smo v letu 2021 izvedli 29 popisnih dni, ki smo jih načrtovali tako, da smo zajeli različne dele sezone pojavljanja odraslih kačjih pastirjev. Med popisovanjem smo vzorčili tudi ličinke in leve. Prisotnost kačjih pastirjev smo zabeležili na 48 popisnih točkah, med katerimi jih je bilo 27 prvič popisanih v okviru raziskave. Zabeležili smo 35 vrst kačjih pastirjev. Pri 26 vrstah kačjih pastirjev smo potrdili razvoj na območju. V okviru naloge sta bila na območju prvič zabeležena zelena pazverca (Calcholestes viridis) in povodni škratec (Coenagrion scitulum). Skupno smo zabeležili šest ogroženih in dve zavarovani vrsti kačjih pastirjev. Koščični škratec (Coenagrion ornatum) in veliki studenčar (Cordulegaster heros) sta uvrščena v Prilogo Direktive o habitatih. Največ vrst (23) smo zabeležili na popisni točki Ribnika 500 m južno od Godičevega. V okviru raziskave nismo zabeležili barjanske deve (Aeshna juncea), ki je bila v preteklosti na Bloški planoti pogosta vrsta, danes pa je kot kaže ogrožena ali celo lokalno izumrla. Kačje pastirje na Bloški planoti ogroža izguba primernega življenjskega okolja, ki je posledica izsuševanja in zaraščanja barjanskih življenskih okolij, pa tudi razvoj množičnega turizma in prekomeren vnos rib v nekatera vodna telesa.

Language:Slovenian
Keywords:kačji pastirji, Odonata, Bloška planota, naravovarstvo, biodiverziteta
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:BF - Biotechnical Faculty
Place of publishing:Ljubljana
Publisher:[A. Kozina]
Year:2022
Number of pages:X, 60 f.
PID:20.500.12556/RUL-134972 This link opens in a new window
UDC:595.73(043.2)
COBISS.SI-ID:103833603 This link opens in a new window
Publication date in RUL:15.02.2022
Views:1203
Downloads:99
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Secondary language

Language:English
Title:Distribution and potential endangerment of Dragonflies and Damselflies (Odonata) of the Bloke plateau : magistrski študij - 2. stopnja
Abstract:
The Bloke Plateau is one of the better odontologically studied areas in Slovenia, however, most of the data were obtained at the end of the last century. The purpose of the master's thesis was to investigate the current distribution of dragonflies in the area and to check for their possible endangerment. We conducted 29 field days in 2021, which were planned to cover different parts of the adult dragonfly flight season. Larvae and exuvias were also sampled during the surveys. The presence of dragonflies was recorded at 48 study sites, of which 27 were surveyed first time during our survey. We recorded 35 species of dragonflies. We confirmed the reproduction of 26 dragonfly species at Bloke plateau. During the survey, Green emerald damselfly (Calcholestes viridis) and Dainty bluet (Coenagrion scitulum) were recorded for the first time in the area. In total, we recorded six threatened and two protected species of dragonflies. Ornate bluet (Coenagrion ornatum) and Balkan goldenring (Cordulegaster heros) are listed in the Annexes of the Habitats Directive. The highest number of species (23) were recorded at the site Fishponds 500 m south of Godičevo. During the survey, we did not record the Common hawker (Aeshna juncea), which was a common species at the Bloke plateau in the past, but today it seems to be endangered or even locally extinct. Dragonflies on the Bloke plateau are threatened by the loss of a suitable habitat due to the drying up and overgrowing of bog habitats, as well as the development of mass tourism and excessive introduction of fish into some water bodies.

Keywords:dragonflies, Odonata, Bloke plateau, nature conservation, biodiversity

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