Sezonske promjene populacija planktonskih rakova Vranskog jezera kod Biograda

master's thesis

• Title (english): Seasonal variation in population dynamics of plankton crustaceans in Lake Vrana near Biograd
• Author: Monika Kanižaj
• Mentor: Ivančica Ternjej (mentor)
• Committee member: Ivančica Ternjej (predsjednik povjerenstva)
• Committee member: Zdravko Dolenec (član povjerenstva)
• Committee member: Nenad Judaš (član povjerenstva)
• Committee member: Tajana Preočanin (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2011-06-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

U ovom radu prikazana je sezonska dinamika zooplanktona na Vranskom jezeru na četiri postaje u razdoblju od svibnja do studenog 2008. godine. Prikazom fizikalno kemijskih pokazatelja utvrdile su se li razlike u ekološkim svojstva pojedinih postaja, te dinamika zajednice makrozooplanktona. Uzorci vode za fizikalno-kemijske pokazatelje uzeti su s dubine od 0,5 m. Plankton je uzorkovan pomoću planktonske mreže (promjer oka 50 μm) a brojnost pojedinih vrsta zooplanktona određena je prebrojavanjem pomoću stereomikroskopa. Za determinaciju je korištena standardna taksonomska literatura. Prema izmjerenim fizikalno – kemijskim parametrima potvrđeno je da postoje male mikrostanišne razlike koje su utvrđene prijašnjim istraživanjem. Brojnost makrozooplanktona veća je na postajama sa tipičnim lakustirčkim uvjetima dok kod postaja sa ekstremnijim uvjetima brojnost pada. Prema brojnosti dominira skupina Copepoda ispred Cladocera, dok unutar te skupine dominira Calanoida u odnosu na Cyclopoida.

Abstract (english)

Zooplankton dynamics in the Lake Vrana was investigated during in the period from May to November 2008, in 4 stations. Water samples for physico-chemical analysis were taken on depths of 0,5 m below surface with a 5-l Ruttner hydrobiological bottle. Plankton was sampled by plankton net with a mesh size of 50 μm. Ten litres of water was filtered and preserved in 80% ethanol (final concentration). The plankton crustaceans were counted in a round glass Petri dish under an Opton microscope. The entire volume of each sample was counted. For determination standard taxonomic literature was used. Analysis of physico-chemical parameters confirmed small differences between stations. Due to these defferences macrozooplankton abundance was higher in stations with tipical lacustrine environment while in more extreme environment the abundance was decreasing. Copepods dominated over cladocerans. Calanoida were more numerous than Cyclopoida.

• Keywords: makrozooplankton; fizikalno – kemijski parametri; Vransko jezero
• Keywords (english): macrozooplankton; physico - chemical parameters; Lake Vrana
• Language: croatian
• URN:NBN: urn:nbn:hr:217:480317
• 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: 2017-05-03 08:53:46