Analiza pouzdanosti dostupnih prostornih podataka o invazivnim vrstama biljaka

master's thesis

• Title (english): Uncertainty analyses of available spatial data on invasive plants
• Author: Lucija Rajčić
• Mentor: Sven Jelaska (mentor)
• Committee member: Sven Jelaska (predsjednik povjerenstva)
• Committee member: Ivana Buj (član povjerenstva)
• Committee member: Duje Lisičić (član povjerenstva)
• Committee member: Toni Nikolić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2021-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Korološki podatci o invazivnim vrstama (nalazi vrste) često se koriste u razvoju modela prostorne rasprostranjenosti vrsta sa ciljem utvrđivanja rasprostranjenosti invazivne vrste i razvoja mjera upravljanja. Prostorna preciznost koroloških podataka ovisi o metodi primjenjenoj prilikom kartiranja. Utvrđeno je da podatci manje prostorne preciznosti predstavljaju izvor nesigurnosti u razvoju modela te njihovo korištenje može uzrokovati netočne modele. U ovom istraživanju korišteni su korološki podatci iz četiri klase prostorne preciznosti za šest čestih invazivnih vrsta biljaka koji su preuzeti iz baze Flora Croatica Database. Korološki podatci su preklopljeni s kartama staništa te klimatskim, topografskim i demografskim podatcima s ciljem utvrđivanja utjecaja prostorne preciznosti na vezanost za stanište i okolišni profil vrste. Prostorna preklapanja obavljena su u GIS-u. Statistička analiza utjecaja prostorne preciznosti na okolišni profil uključivala je deskriptivnu statistiku, jednosmjernu ANOVA -u i Tukeyjev post-hoc test. Statistička analiza vezanosti za stanište uključivala je Friedmanovu ANOVA -u i Wilcoxonov test. Pokazalo se da niža prostorna preciznost podataka u pravilu utječe na dobivenu vezanost za staništa i okolišni profil vrste. Ipak, utjecaj prostorne preciznosti varirao je od vrste do vrste te od varijable do varijable. Stoga je uputno prije modeliranja testirati utjecaj prostorne preciznosti i temeljem rezultata odabrati povoljne podatke za razvoj modela.

Abstract (english)

Chorological data (species records) of invasive plant species are often used in developing species distribution models with goals of determining the distribution of species and implementing successful management measures. The spatial accuracy of records varies based on the methods used during the mapping process. It has been established that low spatial accuracy is a source of uncertainty in environmental modelling and can lead to faulty models. In this study spatial records of four different spatial precision levels were taken from Flora Croatica Database for six invasive plant species in Croatia. Habitats and environmental data were joined to species records and tested if spatial accuracy affects habitat preferences and ecological profile of species. Data were joined in QGIS and statistical analysis included descriptive statistics followed by one-way ANOVA with Tukey post-hoc test for testing the ecological profile and Friedman ANOVA followed by Wilcoxon Matched Pairs test for testing the habitat preference. The results show that lower spatial accuracy generally influences the habitat preferences and ecological profile. However, the effect of spatial precision greatly varies across species and variables and it should be tested before choosing the entry data for developing a species distribution model.

• Keywords: korološki podatci; prostorna preciznost; invazivne biljke; Hrvatska
• Keywords (english): chorological data; spatial precision; invasive plants; Croatia
• Language: croatian
• URN:NBN: urn:nbn:hr:217:291850
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2022-02-25
• Created on: 2021-03-02 12:15:13