Original scientific paper

https://doi.org/10.2478/botcro-2019-0004

Algal assemblages in springs of different lithologies (ophiolites vs. limestone) of the Konjuh Mountain (Bosnia and Herzegovina)

Jasmina Kamberović orcid.org/0000-0002-5408-1438 ; University of Tuzla, Faculty of Natural Sciences and Mathematics, Univerzitetska 4, 75000, Tuzla, Bosnia and Herzegovina
Anđelka Plenković-Moraj ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10000 Zagreb, Croatia
Koraljka Kralj Borojević ; Minnesota Drive, Great Sankey, Warrington, UK, WA5 3SY
Marija Gligora Udovič ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10000 Zagreb, Croatia
Petar Žutinić ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10000 Zagreb, Croatia
Dubravka Hafner ; Bartulovići 4, 20357 Blace, Croatia
Marco Cantonati ; MUSE – Museo delle Scienze, Limnology and Phycology Section, Corso del Lavoro e della Scienza 3, I-38123 Trento, Italy

Abstract

The biodiversity of algal communities and environmental conditions were investigated in the springs of Mt. Konjuh. The assemblages of 20 springs emerging from different lithologies (limestones and ophiolites, respectively) comprised 234 algal taxa. Diatoms and cyanobacteria were the most species-rich groups. The most common alkaliphilic, circumneutral, and eutraphentic diatoms were represented by the genera Gomphonema, Nitzschia, Navicula, Cymbella, and Achnanthidium, and by the cyanobacterial genus Phormidium. Hierarchical clustering and SIMPROF analysis based on relative algal abundance clustered springs into six groups, separating them mainly according to spring type and lithology. Indicator species for groups and springs on different lithological substrata were singled out, revealing 33 taxa with preferences for ophiolites, and 20 taxa with preferences for
carbonates. The values of the Shannon-Wiener diversity index were moderately high per spring location, and similar for the two groups of springs on different lithologies. A higher similarity in species composition was noted between springs on ophiolites and limestones than between springs on ophiolites and other types of siliceous substrata. The present study suggests that algal assemblages in springs emerging from ophiolites, even those made up by a preponderance of silicates, should be analyzed separately from those related to springs on other siliceous substrata. The results obtained showed that most of the springs studied are affected by anthropogenic impacts and morphological alterations leading to the dominance of highly ompetitive meso- and eutraphentic algal species, thus emphasizing the importance of further investigation and conservation of these habitats.

Keywords

biodiversity; diatoms; cyanobacteria; springs; geological substratum; ecological preferences; trophic status

Hrčak ID:

218294

URI

https://hrcak.srce.hr/218294

Publication date:

1.4.2019.

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