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Določljivost vrst kosmuljkov (Anthericum spp.) po fotografijah : diplomsko delo
Medved, Katarina (Author), Jogan, Jernej (Mentor) More about this mentor... This link opens in a new window

URLURL - Presentation file, Visit http://pefprints.pef.uni-lj.si/id/eprint/2779 This link opens in a new window

Abstract
Cilj diplomskega dela je bil ugotoviti, ali lahko s še nepreverjeno metodo primerjave meritev fotografij rastlin iz rodu Anthericum, pridobljenih na spletu, jasno razlikujemo med vrstama navadni in grozdasti kosmuljek. Na vsaki fotografiji je bilo izvedenih 21 meritev. Na podlagi 144 fotografij, na katerih smo lahko nedvoumno določili vrsto, se je za uporabne izkazalo 9 razlikovalnih znakov. Multivariatna analiza, ki je vključevala 6 merjenih znakov in v katero je bilo vključenih 90 fotografij, je dala dober rezultat, in sicer dve jasno ločeni skupini. Ena je združevala predstavnike vrste A. ramosum, druga pa A. liliago. V raziskavi smo preverili tudi, ali so določitve vrst na spletu pravilne. Od 144 fotografij, katerim smo lahko nedvoumno določili vrsto, smo določitev spremenili le pri 6,9 % fotografijah. Pri ostalih fotografijah (36,3 %) smo lahko potrdili, da gre za rod Anthericum, nismo pa mogli nedvoumno določiti vrste. Ugotovili smo tudi, da se podatki o tem, kje so nastale fotografije, skladajo s podatki o razširjenosti vrst, ki jih navaja pregledana literatura.

Language:Slovenian
Keywords:Anthericum liliago, Anthericum ramosum, morfometrija, analiza fotografij, kosmuljki, navadni kosmuljek, grozdasti kosmuljek
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:PEF - Faculty of Education
Year:2015
Publisher:[K. Medved]
Number of pages:XII, 53 f., [46] f. pril.
UDC:582.585.1(043.2)
COBISS.SI-ID:10524489 This link opens in a new window
Views:563
Downloads:191
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Secondary language

Language:English
Title:Determinability of Anthericum species by photos
Abstract:
The aim of the graduation thesis was to find out if we can clearly distinguish between the species Anthericum ramosum and Anthericum liliago by a still unverified method of comparison of measurements of the photos of plants of the genus Anthericum, obtained online. The survey comprised 226 photos, 216 available on the internet and 10 original. The number of measurements carried out on each photo was 21. On the basis of 144 photos to which the species could unambiguously be determined, 9 characters turned out to be applicable for distinguishing. Multivariate analysis, including 6 measuring characters and covering 90 photos, yielded good results, namely two clearly distinct groups. One of them consisted of representatives of the species A. ramosum, and the other one of the species A. liliago. In the survey we checked also correctness of determination of species on the web. From 144 photos to which we could unambiguoulsy determine the species, we changed the determination only to 6,9 % plant from photos. At other photos (36,3 %) we could confirm that it was the genus Anthericum, but we could not unambiguously determine the species. We found out also that the geographical was consistent with the data about distribution of species referred to in the literature reviewed.


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