In recent years, there has been a growing interest in the study of pollination networks, considering the concern for the decline of insects and, consequently, pollinators. Standardized procedures are necessary to compare data obtained from different sites and/or periods. The purpose of this thesis was to investigate how the population of two main groups of pollinators, hoverflies (Diptera Syrphidae) and bees (Hymenoptera Anthophila), varies throughout the day. Transects, conducted along a fixed path, allowed the detection of syrphids and bees, as well as the flowers visited throughout the day. The study was conducted on two transects (one at high altitude and one at low altitude), performed five times a day at two-hour intervals. The 241 analysed samples (part of 718 total analysed observations) were collected in Italy, in the Foreste Casentinesi, Monte Falterona e Campigna National Park over a period of five months, from May to September; 47 species (including 28 morphospecies) of Anthophila and 30 species of Syrphidae were found, which have interacted with 63 plant species. Some interesting species, like the saproxylic Callicera aurata (Rossi, 1790) were found.
Negli ultimi anni, c'è stato un crescente interesse nello studio delle reti di impollinazione, considerando la preoccupazione per il declino degli insetti e, di conseguenza, degli impollinatori. Sono necessarie procedure standardizzate per confrontare i dati ottenuti da diversi siti e/o periodi. Lo scopo di questa tesi era di investigare come la popolazione di due principali gruppi di impollinatori, i sirfidi (Diptera Syrphidae) e gli apoidei (Hymenoptera Anthophila), varia nel corso della giornata. I transetti, condotti lungo un percorso fisso, hanno permesso il rilevamento di sirfidi e apoidei, nonché dei fiori visitati durante tutta la giornata. Lo studio è stato condotto su due transetti (uno ad alta quota e uno a bassa quota), eseguiti cinque volte al giorno a intervalli di due ore. I 241 campioni analizzati (parte di 718 osservazioni totali analizzate) sono stati raccolti in Italia, nel Parco Nazionale delle Foreste Casentinesi, Monte Falterona e Campigna, in un periodo di cinque mesi, da maggio a settembre; sono state trovate 47 specie (incluse 28 morfospecie) di Anthophila e 30 specie di Syrphidae, che hanno interagito con 63 specie vegetali. Sono state trovate alcune specie interessanti, come la saproxilica Callicera aurata (Rossi, 1790).
Evaluation of the diurnal phenology of pollinators (Diptera Syrphidae and Hymenoptera Anthophila) in the Foreste Casentinesi National Park
DI SAVERIO, MARTINA
2023/2024
Abstract
In recent years, there has been a growing interest in the study of pollination networks, considering the concern for the decline of insects and, consequently, pollinators. Standardized procedures are necessary to compare data obtained from different sites and/or periods. The purpose of this thesis was to investigate how the population of two main groups of pollinators, hoverflies (Diptera Syrphidae) and bees (Hymenoptera Anthophila), varies throughout the day. Transects, conducted along a fixed path, allowed the detection of syrphids and bees, as well as the flowers visited throughout the day. The study was conducted on two transects (one at high altitude and one at low altitude), performed five times a day at two-hour intervals. The 241 analysed samples (part of 718 total analysed observations) were collected in Italy, in the Foreste Casentinesi, Monte Falterona e Campigna National Park over a period of five months, from May to September; 47 species (including 28 morphospecies) of Anthophila and 30 species of Syrphidae were found, which have interacted with 63 plant species. Some interesting species, like the saproxylic Callicera aurata (Rossi, 1790) were found.File | Dimensione | Formato | |
---|---|---|---|
Di Saverio_Martina.pdf
embargo fino al 17/07/2027
Dimensione
5.09 MB
Formato
Adobe PDF
|
5.09 MB | Adobe PDF |
The text of this website © Università degli studi di Padova. Full Text are published under a non-exclusive license. Metadata are under a CC0 License
https://hdl.handle.net/20.500.12608/68256