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undergraduate thesis
Mikrofauna povremenih stajaćica
Zagreb: University of Zagreb, Faculty of Science, 2015. urn:nbn:hr:217:229000
Borić, Ana
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Borić, A. (2015). Mikrofauna povremenih stajaćica (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:229000

Borić, Ana. "Mikrofauna povremenih stajaćica." Undergraduate thesis, University of Zagreb, Faculty of Science, 2015. https://urn.nsk.hr/urn:nbn:hr:217:229000

Borić, Ana. "Mikrofauna povremenih stajaćica." Undergraduate thesis, University of Zagreb, Faculty of Science, 2015. https://urn.nsk.hr/urn:nbn:hr:217:229000

Borić, A. (2015). 'Mikrofauna povremenih stajaćica', Undergraduate thesis, University of Zagreb, Faculty of Science, accessed 04 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:229000

Borić A. Mikrofauna povremenih stajaćica [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Science; 2015 [cited 2024 November 04] Available at: https://urn.nsk.hr/urn:nbn:hr:217:229000

A. Borić, "Mikrofauna povremenih stajaćica", Undergraduate thesis, University of Zagreb, Faculty of Science, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:217:229000

Metadata
TitleMikrofauna povremenih stajaćica
Title (english)Microfauna of temporary stagnant waters
AuthorAna Borić
MentorMaria Špoljar (mentor)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2015, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Povremene stajaćice su vrlo široko rasprostranjene i dominantna su značajka našeg planeta. Javljaju se na gotovo svim kontinentima i u svim klimatskim zonama, međutim slabo su istraživani ekosustavi. One su u osnovi prirodni vodeni sustavi koji imaju ponavljajuća sušna razdoblja različitog trajanja. Povremene stajaćice razlikuju se od trajnih (permanentnih) s obzirom na mnoge fizičko-kemijske čimbenike i njihove oscilacije velikih amplituda (svjetlost, temperatura, koncentracija otopljenog kisika i hranjive tvari). Preživljavanje u ovakvim uvjetima u velikoj mjeri ovisi o iznimnoj fiziološkoj toleranciji i sposobnosti učinkovite migracije. U ovom radu dan je pregled prilagodbi i fukcioniranja mikrofaune (protozoa, kolnjaci (Rotifera), rašljoticalci (Cladocera) i veslonošci (Copepoda), oblići (Nematoda), trbodlaci (Gastrotricha), dugoživci (Tardigrada), u povremenim stajaćicama. Najutjecajniji okolišni čimbenik u povremenim stajaćicama je gubitak vode u sušnom razdoblju. Sušno razdoblje onemogućava vodenim organizmima završetak životnog ciklusa. Stoga su se vrste prilagodile na takve okolišne uvjete. Dijapauza je stadij potpunog mirovanja. Uvjetovana je klimatskim ili nasljednim čimbenicima. Organizmi uspore metaboličke procese, izbace vodu te u tom stanju mogu ostati nekoliko dana, ali i do nekoliko godina. Povremene stajaćice su više ugrožene u odnosu na trajne. Relativno male promjene u regionalnim hidrološkim uvjetima mogu dovesti do velikih promjena u ekološkom režimu povremenih stajaćica i njihovih biocenoza.
Abstract (english)
Temporary waters are highly varied, widely distributed, and a dominant feature of our planet, occurring across virtually all continents and in all climate zones, however poorly studied ecosystems. They are essentially natural water bodies which pass trough a recurrent dry phase of varying duration. Temporary ponds are different from permanent onse in many features and their high amplitudes (light, temperature, concentration of dissolved oxygen and nutrients). Survival depends largely on extreme physiological tolerance and ability of effective migration. This paper gives an overview of adaptations and functioning of microfauna (protozoa, rotifers, cladocerans, copepods, nematodes, gastrotrichs, tardigrads) in temporary waters. The most significant environmental factor in the temporary waters is loss of water during the dry season. Dry period prevents aquatic organisms to complete their life cycle. Therefore, the species are adapted to these environmental conditions. Diapause is stage of complete stagnation, conditioned by the climate or genetic factors. Organisms decrease metabolic processes, thrown out the water and in this state can remain for several days, but also a few years.Temporary ponds are more threatened than permanent waters. Relatively small changes in the regional hydrological conditions can lead to major changes in the ecological regime of temporary ponds and their biocenosis.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:229000
Study programmeTitle: Ecology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-12-14 11:56:39