Zajednice trčaka (Coleoptera, Carabidae) kao indikatori sukcesije na cretu Trstenik

master's thesis

• Title (english): Ground beetle assemblages (Coleoptera, Carabidae) as indicators of succession in the Trstenik bog
• Author: Ana Novak-Perjanec
• Mentor: Andreja Brigić (mentor)
• Mentor: Fran Rebrina (komentor)
• Committee member: Andreja Brigić (predsjednik povjerenstva)
• Committee member: Renata Šoštarić (član povjerenstva)
• Committee member: Mladen Maradin (član povjerenstva)
• Committee member: Blanka Cvetko Tešović (član povjerenstva)
• Committee member: Zorica Petrinec (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Cretovi su specifična močvarna staništa na kojima često glavnu ulogu imaju mahovine. Opstanak creta Trstenik ugrožen je zbog sukcesije vegetacije i isušivanja creta. U ovom su istraživanju kao indikatori promjena na cretu korišteni trčci (Carabidae). Ciljevi istraživanja bili su odrediti razlike u sastavu i strukturi zajednica trčaka na tri staništa na cretu Trstenik (središnjem i sukcesijskom dijelu creta te šumskom rubu), odrediti utjecaj okolišnih čimbenika na prostornu raspodjelu trčaka te definirati mjere očuvanja creta. Trčci su sakupljani metodom lovnih posuda od lipnja do listopada 2021. godine. Ukupno su sakupljene 44 vrste i 1551 jedinka trčaka. Bogatstvo vrsta, brojnost jedinki te indeksi raznolikosti i ujednačenosti zajednica trčaka bili su najmanji u središtu creta, ali se nisu statistički značajno razlikovali od parametara u sukcesijskom dijelu creta, dok su na šumskom rubu zabilježene statistički značajno više vrijednosti u odnosu na ostala istraživana staništa. Na cretu su najveći utjecaj na sastav zajednica trčaka imali povećana zastupljenost prizemnog sloja rašća i povišene vrijednosti temperature tla te, osobito u središnjem dijelu creta, povišena vlažnost i pH vrijednost tla, a na šumskom rubu povećana zastupljenost sloja drveća. Rezultati istraživanja upućuju na uznapredovali proces sukcesije u središnjem dijelu creta, no pronalazak indikatorskih vrsta trčaka ukazuje na postojanje uvjeta tipičnih za cretna staništa te su predložene mjere za obnavljanje staništa.

Abstract (english)

Peat bogs are specific wetland habitats where mosses often play an important role. The Trstenik peat bog is threatened by vegetation succession and drying of the peat bog. In this study, ground beetles (Carabidae) were used as indicators of habitat changes. The objectives of this study were: i) to determine differences in the composition and structure of ground beetle communities in three habitats on the Trstenik peat bog, ii) to determine the influence of environmental factors on the spatial distribution of ground beetles, iii) to define peat bog conservation measures. Ground beetles were collected using pitfall traps. A total of 44 species and 1551 individuals were collected. All measured indices of ground beetle communities were lowest in the central part of the bog but did not differ significantly from the parameters in the successional part. Conversely, significantly higher values were recorded at the forest edge compared to the other two studied habitats. In the peat bog, the greatest impact on the composition of ground beetle communities had the increased presence of the herb layer and soil temperature values, and, particularly in the central part, increased soil moisture and pH. At the forest edge, the abundance of the tree layer played a significant role. The results of the study indicate progressive vegetation succession in the central part of the peat bog, but the discovery of indicator ground beetle species suggests the existence of typical peat bog conditions. Therefore, measures for habitat restoration are proposed.

• Keywords: tirfofilne vrste; šumski rub; indikatori; raznolikost; restauracija staništa
• Keywords (english): tyrphophilous species; forest edge; indicators; diversity; habitat restoration
• Language: croatian
• URN:NBN: urn:nbn:hr:217:756622
• Project: Number: KK.05.1.1.02.0006.; Title: Mjere prilagodbe klimatskim promjenama za održivo upravljanje prirodnim resursima; Title: Climate change adaptation measures for sustainable management of natural resources; Acronym: MEMORIE; Leader: Stjepan Mikac; Jurisdiction: Croatia; Funder: EK; Funding stream: EFRR
• Study programme: Title: Environmental Sciences-University graduate programme; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra struke znanosti o okolišu (sveučilišni/a magistar/magistra struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2025-09-26
• Created on: 2024-01-17 09:37:56