National Repository of Dissertations in Serbia
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   NaRDuS home
  • Универзитет у Нишу
  • Природно-математички факултет
  • View Item
  •   NaRDuS home
  • Универзитет у Нишу
  • Природно-математички факултет
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Uticaj variranja osobina životne istorije na vijabilnost populacije šumske kornjače Testudo hermanni Gmelin (Chelonia: Testudinidae) iz istočnog dela areala

Thumbnail
2018
Disertacija.pdf (5.086Mb)
Stojadinovic_Dragana_M.pdf (378.5Kb)
Author
Stojadinović, Dragana
Mentor
Stamenković, Slaviša
Committee members
Crnobrnja-Isailović, Jelka
Milošević, Đurađ
Ćosić, Nada
Metadata
Show full item record
Abstract
During the five consecutive years (2010-2014), in the local population of the eastern Hermann's tortoise (Testudo hermanni boettgeri) in the vicinity of Kunovica village near Nis, the variation of selected life-history parameters, population structure and some additional characteristics reflecting the population status were observed and measured. The existence of sexual size and shape dimorphism has been confirmed, followed by a slight variation in the body mass condition index of adult tortoises during consecutive years of monitoring, which could indicate a stable health status of the population. Adult sex ratio deviates from the otimum, so that the females were more numerous than males. Determining the prеcise age structure was not possible. Also, a wide range of variation in the age of achieving sexual maturity has been observed. The average clutch size fits into the range of values reported in the literature. The average survival rate of adult individuals was high and no difference...s in survival between sexes were found, also differences between sexes in the size of the area of movement were not determined. An analysis of the viability of the hypothetically isolated Hermann's tortoise population in Kunovica, within the experimental area, showed that such a population is not viable. Accordingly, the minimum viable size of this population has not been determined, but it has been established that an increase in the carrying capacity of the habitat leads to a significant reduction of the extinction. Among the simulated parameters, the most critical one for long-term survival is the very disturbed sex ratio at birth. In contrast, the earlier sexual maturation and the younger age of the first reproduction, could approach the status of a viable for this population within the next hundred years. It has been shown that a triple increase in the carrying capacity of the habitat can increase the probability of survival for a third what, with additional monitoring, would allow the long-term survival of this population of Hermann's tortoise.

Faculty:
Универзитет у Нишу, Природно-математички факултет
Date:
19-01-2018
Projects:
  • Evolution in Heterogeneous Environments: Adaptation Mechanisms, Biomonitoring and Conservation of Biodiversity (RS-173025)
Keywords:
šumska kornjača / Hermann's tortoise / life history traits / population viability / osobine životne istorije / vijabilnost populacije
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_nardus_9256
URI
https://nardus.mpn.gov.rs/handle/123456789/9256
http://eteze.ni.ac.rs/application/showtheses?thesesId=5619
https://fedorani.ni.ac.rs/fedora/get/o:1447/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70052&RID=1025583081

DSpace software copyright © 2002-2015  DuraSpace
About NaRDus | Contact us

OpenAIRERCUBRODOSTEMPUS
 

 

Browse

All of DSpaceUniversities & FacultiesAuthorsMentorCommittee membersSubjectsThis CollectionAuthorsMentorCommittee membersSubjects

DSpace software copyright © 2002-2015  DuraSpace
About NaRDus | Contact us

OpenAIRERCUBRODOSTEMPUS