prikaz prve stranice dokumenta Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima
Embargo period 2025-09-25
master's thesis
Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima
Zagreb: University of Zagreb, Faculty of Science, 2023. urn:nbn:hr:217:163238
Bujas, Niko
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Bujas, N. (2023). Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:163238

Bujas, Niko. "Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima." Master's thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:163238

Bujas, Niko. "Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima." Master's thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:163238

Bujas, N. (2023). 'Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima', Master's thesis, University of Zagreb, Faculty of Science, accessed 14 January 2025, https://urn.nsk.hr/urn:nbn:hr:217:163238

Bujas N. Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2023 [cited 2025 January 14] Available at: https://urn.nsk.hr/urn:nbn:hr:217:163238

N. Bujas, "Dobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:217:163238

Metadata
TitleDobna struktura i rast školjkaša Unio crassus u različitim okolišnim uvjetima
Title (english)Age structure and growth of bivalve Unio crassus in different environmental conditions
AuthorNiko Bujas
MentorMelita Peharda Uljević (mentor)
MentorJasna Lajtner (komentor)
Committee memberJasna Lajtner (predsjednik povjerenstva)
Committee memberSandra Hudina (član povjerenstva)
Committee memberZoran Marčić (član povjerenstva)
Committee memberIvana Maguire (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2023-09-25, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Cilj istraživanja bio je usporediti dobnu strukturu i morfometrijske značajke dviju populacija školjkaša Unio crassus na referentnoj i onečišćenoj postaji na rijeci Mrežnici te dobivene rezultate usporediti s onima iz drugih dijelova Europe. Uzorkovanje školjkaša obavljeno je 7. srpnja 2020. godine. Sa svakog lokaliteta prikupljeno je 30 jedinki kojima je određena starost i dinamika rasta analizom unutrašnjih linija rasta primjenom acetatnih preslika. Dužinski raspon ljuštura s referentne postaje iznosio je 4,5 - 5,6 cm, a na onečišćenoj postaji 5,2 - 6,1 cm. Procijenjena starost analiziranim jedinkama s referentne postaje varirao je od 10 do 29 godina s prosjekom od 21,4 ± 4,2 godine, dok je na onečišćenoj postaji procijenjena starost od 10 do 22 godine s prosjekom od 15,6 ± 3,7 godina. Modificiranim von Bertalanffy-jevim jednadžbama prikazane su dinamike rasta školjkaša pokazujući brži rast jedinki onečišćene postaje. Izrađena kronologija rasta za obje istraživane populacije ukazala je na jednu karakterističnu godinu sa širokim prstenom rasta koja kronološki odgovara 2015. godini. Usporedbom kronologije rasta i dostupnih podataka o okolišu nije utvrđena jasna povezanost.
Abstract (english)
The aim of this study was to compare age structure and morphometric features of two populations of bivalve Unio crassus at the reference and polluted station on Mrežnica river, and compare the obtained results with those from other parts of Europe. Sampling of bivalves was carried out on July 7th, 2020. From each locality, 30 individuals were collected. Age and growth dynamics were determined by analyzing internal growth lines in acetate peels. The length range of shells from the reference station was 4.5 - 5.6 cm, while at the polluted station it was 5,2 - 6,1 cm. The estimated age of the analyzed individuals from the reference station varied from 10 to 29 years with an average of 21,4 ± 4,2 years, while the estimated age at the polluted station was from 10 to 22 with an average of 15,6 ± 3,7 years. The modified von Bertalanffy equations show the dynamics of shell growth, showing faster shell growth at the polluted station. A chronology was made for both researched locations and they had one characteristic year with a wide growth ring that chronologically corresponds to 2015. By comparing the chronology and the available environmental data, there was no clear correlation.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:163238
ProjectNumber: IP-2019-04-2636
Title: Biomolekule koje vežu metale i zdravstveni poremećaji kod slatkovodnih organizama izloženih industrijskom otpadu
Title: Metal-binding biomolecules and health disturbances of freshwater organisms exposed to industrial wastes
Acronym: METABIOM
Leader: Zrinka Dragun
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
ProjectNumber: IP-2019-04-8542
Title: Školjkaši: Arhiva okolišnih promjena u obalnim morskim ekosustavima
Title: Bivalves: Archives of environmental Change in the coastal Marine Ecosystems
Acronym: BivACME
Leader: Melita Peharda Uljević
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsEmbargoed access
Embargo expiration date: 2025-09-25
Terms of useLicence In copyright icon
Created on2023-10-25 08:23:18