Erinevate valgusallikate mõju ööliblikate püüdmisele valguspüünisega
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Kuupäev
2026
Kättesaadavus
04.09.2026
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Käesoleva bakalaureusetöö eesmärk oli hinnata, kas alternatiivne 25 W UV-terraariumilamp sobib kasutamiseks ööliblikate valguspüünistes seni kasutatud 160 W segavalguslambi asemel. Töö taustaks on vajadus leida keskkonnanõuete tõttu piiratud traditsiooniliste valgusallikate asemele toimiv alternatiiv, mis tagaks seire järjepidevuse. Uuring põhines 60 püügiööl kogutud andmestikul, mille käigus püüti kokku 3234 ööliblikat 259 liigist. Valgusallikaid võrreldi samas püünises, vahetades lampe igal ööl. Lisaks koguti keskkonnaandmeid (temperatuur, tuule kiirus, õhuniiskus, õhurõhk, sademed, pilvisus ja kuu faas), mida kasutati koos püügiandmetega statistilises analüüsis. Tulemused näitasid, et 160 W segavalguslamp püüdis keskmiselt rohkem isendeid kui 25 W UV-lamp, kuid erinevus jäi statistiliselt piiripealseks. Püügiedukust mõjutasid kõige enam õhutemperatuur ja hooajalisus, samas kui teiste keskkonnategurite mõju oli väiksem. Liigirikkus oli 25 W UV-terraariumilambi puhul oluliselt madalam kui 160 W segavalguslambi puhul. Liigilise mitmekesisuse ja liigilise koosseisu üldised mustrid olid mõlema valgusallika puhul sarnased. Töö tulemused viitavad, et 25 W UV-terraariumilamp võib olla sobiv alternatiiv traditsioonilisele segavalguslambile, kui selle efektiivsuse erinevusi arvestatakse statistilisel analüüsil. Edasised uuringud on vajalikud alternatiivsete valgusallikate pikaajalise mõju hindamiseks.
The aim of this bachelor’s thesis was to evaluate whether a 25 W UV terrarium lamp is suitable for use in moth light traps as an alternative to the previously used 160 W mixed light mercury vapour lamp. The study is motivated by the need to find a functional alternative to traditional light sources that are being restricted due to environmental regulations, in order to ensure the continuity of monitoring. The study was based on data collected over 60 sampling nights, during which a total of 3,234 moth individuals representing 259 species were captured. The light sources were compared using the same trap by alternating the lamps on a nightly basis. In addition, environmental data (temperature, wind speed, humidity, air pressure, precipitation, cloud cover, and lunar phase) were collected and used together with the capture data in statistical analyses. The results showed that the 160 W mercury vapour lamp captured more individuals on average than the 25 W UV lamp, although the difference was only marginally significant. Capture efficiency was most strongly influenced by air temperature and seasonal variation, while the effects of other environmental factors were insignificant. Species richness was significantly lower for the 25 W UV terrarium lamp than for the 160 W mercury vapour lamp. The overall patterns of species diversity and community composition were similar for both light sources. The results suggest that the 25 W UV terrarium lamp may be a suitable alternative to the traditional mercury vapour lamp, if the difference in its performance is taken into account. Further studies are needed to assess the long-term effects of alternative light sources.
The aim of this bachelor’s thesis was to evaluate whether a 25 W UV terrarium lamp is suitable for use in moth light traps as an alternative to the previously used 160 W mixed light mercury vapour lamp. The study is motivated by the need to find a functional alternative to traditional light sources that are being restricted due to environmental regulations, in order to ensure the continuity of monitoring. The study was based on data collected over 60 sampling nights, during which a total of 3,234 moth individuals representing 259 species were captured. The light sources were compared using the same trap by alternating the lamps on a nightly basis. In addition, environmental data (temperature, wind speed, humidity, air pressure, precipitation, cloud cover, and lunar phase) were collected and used together with the capture data in statistical analyses. The results showed that the 160 W mercury vapour lamp captured more individuals on average than the 25 W UV lamp, although the difference was only marginally significant. Capture efficiency was most strongly influenced by air temperature and seasonal variation, while the effects of other environmental factors were insignificant. Species richness was significantly lower for the 25 W UV terrarium lamp than for the 160 W mercury vapour lamp. The overall patterns of species diversity and community composition were similar for both light sources. The results suggest that the 25 W UV terrarium lamp may be a suitable alternative to the traditional mercury vapour lamp, if the difference in its performance is taken into account. Further studies are needed to assess the long-term effects of alternative light sources.
Kirjeldus
Bakalaureusetöö
Keskkonnakaitse õppekaval
Märksõnad
bakalaureusetööd, püügiefektiivsus, liigirikkus, liigiline koosseis, keskkonnategurid, seire