magistrsko delo
Neža Gregorič (Author), Mihael Jožef Toman (Reviewer), Igor Zelnik (Mentor), Igor Zelnik (Thesis defence commission member), Mihael Jožef Toman (Thesis defence commission member), Alenka Gaberščik (Thesis defence commission member)

Abstract

Preučevali smo združbe vodnih makroinvertebratov (MI) in makrofitov (MF) ter medsebojne povezave v 16 izbranih kalih na obrobju Julijskih in Kamniško-Savinjskih Alp. Ugotavljali smo povezave med okoljskimi dejavniki in strukturo omenjenih združb ter vplive teh dejavnikov na taksonomsko sestavo in pestrost združb. MI smo vzorčili z ročno mrežo po metodi PLOCH, kasneje pa smo popisali MF in ocenili njihovo pokrovnost. MF smo po določitvi uvrstili v 4 skupine glede na Ellenbergove indikatorske vrednosti za vlažnost rastišč. Izračunali smo korelacije med okoljskimi dejavniki in parametri taksonomske pestrosti in diverzitete združb. S kanonično korenspondenčno (CCA) in redundančno analizo (RDA) smo preučevali vpliv okoljskih dejavnikov na sestavo združb. V kalih smo zabeležili 10 višjih taksonov in 23 družin MI ter 37 vrst pravih vodnih makrofitov (VMF). V kalih z največjim številom vrst in pokrovnostjo MF je bila tudi pestrost MI med večjimi. Nekaj parametrov pestrosti in diverzitete MI je bilo v statistično značilni pozitivni korelaciji s parametri pestrosti in diverzitete MF. Ugotovili smo pozitivno korelacijo med nadmorsko višino, velikostjo kala ter parametri pestrosti in diverzitete MI, s parametri MF pa nismo dobili povezav. Ugotovili smo povezavo med rabo tal in združbama MI in MF, pri čemer je bila pokrovnost MF in diverziteta MI večja v kalih z najmanj intenzivno rabo tal. Na sestavo združbe MF so vplivali vsebnost TP in TNb v vodi ter delež kamnitega substrata, na sestavo združbe MI pa raba tal v ožjem prispevnem območju kala in minimalna nasičenost vode s kisikom. V Kalih MEN 2, 3 in JEL 1, kjer je bil skupni vpliv obeh dejavnikov največji, je bila pestrost in diverziteta združbe MI največja.

Keywords

kali;alpsko območje;makroinvertebrati;makrofiti;sestava združb;okoljski dejavniki;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [N. Gregorič]
UDC: 556.55(043.2)
COBISS: 4362063 Link will open in a new window
Views: 1066
Downloads: 428
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Other data

Secondary language: English
Secondary title: Macroinvertebrate and macrophyte communities composition in karst ponds in Alpine region
Secondary abstract: Macroinvertebrate (MI) and macrophyte (MF) communities and their relations were studied in 16 karst ponds on the outskirts of Julian and Kamnik–Savinja Alps. Correlations and influences of environmental factors on the structure of MI and MF communities were investigated. PLOCH procedure was used for sampling of MI, which was conducted with hand net. Later, inventory of MF was performed and their cover values were estimated. MF were determinated and classified into 4 groups according to Ellenberg’s indicator values for humidity of the site. Correlations between environmental factors and parameters of taxonomic richness and diversity of the communities were calculated. Influences of environmental parameters on the structure of communities were analyzed with Canonical Corespondence Analysis and Redundancy Analysis. 10 higher taxa and 23 MI families and 37 aquatic macrophyte species were recorded in surveyed ponds. In ponds with high MF cover and species richness, high MI richness and diversity was also detected. MI richness and diversity were positively correlated with MF richness and diversity, as well as with altitude and pond size. Higher MF cover and MI diversity was in ponds with less intense land use. TP, TNb and stone substrate determined the community structure of MF while land use and oxygen saturation determined the community structure of MI. In ponds MEN2, 3 and JEL2, where the values of both factors was the highest, the highest MI richness and diversity was detected.
Secondary keywords: karst ponds;Alpine region;macroinvertebrates;macrophytes;community composition;environmental factors;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak.
Pages: XIII f., 67, [5] str.
ID: 10724119