Raznolikost malakofaune gornjeg toka rijeke Save

master's thesis

• Title (english): Diversity of the malacofauna of the upper course of the Sava River
• Author: Petra Konjuh
• Mentor: Jasna Lajtner (mentor)
• Committee member: Jasna Lajtner (predsjednik povjerenstva)
• Committee member: Ines Radanović (član povjerenstva)
• Committee member: Vesna Petrović Peroković (član povjerenstva)
• Committee member: Draginja Mrvoš-Sermek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2016-02-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Cilj rada bio je odrediti raznolikost i strukturu zajednice slatkovodnih mekušaca gornjeg toka
rijeke Save. Terensko istraživanje provedeno je tijekom lipnja i rujna 2012. godine na 16
postaja raspoređenih duž gornjeg toka rijeke. Puževi su određeni do razine vrste, a školjkaši
do razine roda. Tijekom istraživanja ukupno je pronađeno 14 vrsta puževa te jedan rod
školjkaša. Najveći broj vrsta mekušaca, njih pet, zabilježen je na postaji S-Med.
Najzastupljenije vrste puževa su Ancylus fluviatilis i Sadleriana fluminensis. Analiza uzrasne
strukture pokazala je da su na istraživanim postajama prisutne i juvenilne jedinke mekušaca.
Provedena analiza funkcionalnih hranidbenih skupina mekušaca pokazala je da na većini
postaja najveći udio imaju strugači nakon kojih slijede detritivori, izuzev dvije najnizvodnije
postaje, gdje najveći udio imaju aktivni filtratori. Najviše vrijednosti Shannonovog i
Simpsonovog indeksa raznolikosti zabilježene su na postajama S-Lju i S-Pas, dok su najniže
vrijednosti ovog indeksa zabilježene na postaji SD-Šob. Rezultati klaster analize pokazuju
jasno izdvajanje zajednice puževa na postaji S-Vrh od zajednice puževa na ostalim
istraživanim postajama. Zaključno, rezultati ovog rada predstavljaju značajan doprinos
poznavanju malakofaune gornjeg toka rijeke Save i polazna su osnova za buduća istraživanja.

Abstract (english)

The main objective of this study was to determine the diversity and community structure of
freshwater molluscs of the upper course of the Sava river. Field research was conducted
during June and September 2012 at 16 stations distributed along the upper course of the river.
Snails are determined to species level and bivalves to genus level. During this study, a total of
14 snail species and one bivalve genus were found. The highest number of species, five, were
recorded at station S-Med. The most common species of snails are Ancylus fluviatilis and
Sadleriana fluminensis. Analysis of molluscs size classes showed that younger individuals are
also present at investigated stations. Analysis of molluscs functional feeding guilds showed
that dominated group is grazers followed by detritivors unless the last two stations were
dominated gruop is active filtrators. Highest values of the Shannon and Simpson diversity
indices were recorded at stations S-Lju and S-Pas, while the lowest values of the indices were
determined at station SD-Šob. Results of the cluster analysis showed a clear separation of the
snail communities at station S-Vrh and snail communities at other stations. Finally, results of
this study represent a significant contribution to the knowledge of malacofauna of the upper
course of the Sava River and will be a starting point for future research.

• Keywords: Gastropoda; Bivalvia; indeksi raznolikosti; funkcionalne hranidbene skupine
• Keywords (english): Gastropoda; Bivalvia; diversity indices; functional feeding guilds
• Language: croatian
• URN:NBN: urn:nbn:hr:217:223118
• 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: Open access
• Created on: 2017-05-08 09:05:17