Značajke eholokacijskih signala šišmiša u Zagrebu i okolici

master's thesis

• Title (english): Properties of bat echolocation signals in Zagreb and surrounding area
• Author: Tena Vujec
• Mentor: Perica Mustafić (mentor)
• Committee member: Perica Mustafić (predsjednik povjerenstva)
• Committee member: Zdravko Dolenec (član povjerenstva)
• Committee member: Nenad Judaš (član povjerenstva)
• Committee member: Vesna Petrović Peroković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2014-02-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Istraživanje eholokacijskih signala je važno radi boljeg poznavanja biologije i zaštite šišmiša. Terenski dio istraživanja proveden je tijekom proljeća i ljeta (lipanj – kolovoz) 2012. godine. Za snimanje eholokacijskih signala šišmiša pomoću bat-detektora odabrana su dva linijska transekta na području grada Zagreba. Prvi transekt je područje oko jezera Jarun (poluprirodno stanište), a drugi transekt je područje centra grada (urbanizirani dio grada). Pomoću mobilne aplikacije GPS zabilježene su koordinate na kojima je uočen šišmiš, odnosno na kojima je snimljen eholokacijski signal. Zabilježen je ukupno 3821 eholokacijski signal od 11 vrsta šišmiša. Analizirani su parametri signala (trajanje signala, početna frekvencija, trenutna frekvencija na polovini trajanja signala, trenutna frekvencija na maksimumu amplitude signala i završna frekvencija) svih vrsta šišmiša. Cilj ovog istraživanja je bio utvrditi razlike eholokacijskih signala vrsta ovisno o periodu istraživanja i ovisno o tipu staništa. Svaka jedinka šišmiša prilagođuje prirodu svojeg signala ovisno o okolišu i situaciji u kojoj se nalazi.

Abstract (english)

Research of echolocation signals is important for better knowledge of the biology and conservation of bats. The fieldwork was carried out during the spring and summer (June-August) 2012. Echolocation signals were recorded by bat detector using a transect sampling method in Zagreb. The first transect is area around lake Jarun (semi natural habitat) and second is the downtown area (urbanized part of the city). Coordinates were noted, using GPS mobile application, where echolocation signals were recorded. There was total of 3821 echolocation signals of the 11 species of bats. The parameters of the signals were analyzed (signal duration, start frequency, current frequency at the half of duration signal, current frequency at the maximum amplitude of the signal and end frequency) of all species of bats. The aim of this study was to determine differences of echolocation signal types depending on the period of exploration and depending on the type of habitat. Each bat adapts their signals depending on the environment and the situation.

• Keywords: Chiroptera; frekvencije eholokacijskih signala; grad; metoda transekta; poluprirodno stanište; sezonske varijacije; trajanje eholokacijskih signala
• Keywords (english): frequencies of the echolocation signals; city; transect sampling method; semi-natural habitat; seasonal variations; echolocation signals duration
• Language: croatian
• URN:NBN: urn:nbn:hr:217:006105
• Study programme: Title: Integrated undergraduate and graduate university study of Biology and Chemistry Education; specializations in: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Course: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra edukacije biologije i kemije (magistar/magistra edukacije biologije i kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-04-26 12:54:26