Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?

Intermittent rivers, common in dry parts of the world, such as the Mediterranean region, are hydrologically harsh habitats characterized by periodical flow cessation. Ephemeroptera are aquatic insects common in both lotic and lentic waterbodies, where they show a high sensitivity to anthropogenic mo...

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Main Authors: Marina Vilenica, Fran Rebrina, Lea Ružanović, Mario Rumišek, Renata Matoničkin Kepčija, Andreja Brigić
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Diversity
Subjects:
Online Access:https://www.mdpi.com/1424-2818/15/2/155
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author Marina Vilenica
Fran Rebrina
Lea Ružanović
Mario Rumišek
Renata Matoničkin Kepčija
Andreja Brigić
author_facet Marina Vilenica
Fran Rebrina
Lea Ružanović
Mario Rumišek
Renata Matoničkin Kepčija
Andreja Brigić
author_sort Marina Vilenica
collection DOAJ
description Intermittent rivers, common in dry parts of the world, such as the Mediterranean region, are hydrologically harsh habitats characterized by periodical flow cessation. Ephemeroptera are aquatic insects common in both lotic and lentic waterbodies, where they show a high sensitivity to anthropogenic modifications of their habitat. Therefore, they are widely used as bio-indicators of the freshwater’s health. However, mayfly assemblages and their ecological requirements in the karst Mediterranean intermittent habitats are still not sufficiently known. Thus, the work presented here includes an analysis of mayfly assemblages and their relationship with environmental variables in the lotic phase of four intermittent rivers in the karst Mediterranean region of Croatia. Considering that the studied intermittent rivers are hydrologically extreme environments, a total of 12 recorded mayfly species could be considered as rather high species richness. Nevertheless, species richness per river was quite low (between three and six), and was highly influenced by river morphology, physico-chemical water properties (especially conductivity, water velocity, and concentrations of dissolved oxygen), and anthropogenic pressures. Our results could contribute to the mayfly species protection in karst Mediterranean intermittent freshwater habitats in the Balkans, as well as to the development of conservation measures for those threatened habitats.
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spelling doaj.art-ea1bed92db9c488ebbe74ff2f3ada03d2023-11-16T20:03:50ZengMDPI AGDiversity1424-28182023-01-0115215510.3390/d15020155Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?Marina Vilenica0Fran Rebrina1Lea Ružanović2Mario Rumišek3Renata Matoničkin Kepčija4Andreja Brigić5Faculty of Teacher Education, University of Zagreb, Trg Matice Hrvatske 12, 44250 Petrinja, CroatiaDivision of Zoology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, CroatiaDivision of Zoology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, CroatiaDivision of Zoology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, CroatiaDivision of Zoology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, CroatiaDivision of Zoology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, CroatiaIntermittent rivers, common in dry parts of the world, such as the Mediterranean region, are hydrologically harsh habitats characterized by periodical flow cessation. Ephemeroptera are aquatic insects common in both lotic and lentic waterbodies, where they show a high sensitivity to anthropogenic modifications of their habitat. Therefore, they are widely used as bio-indicators of the freshwater’s health. However, mayfly assemblages and their ecological requirements in the karst Mediterranean intermittent habitats are still not sufficiently known. Thus, the work presented here includes an analysis of mayfly assemblages and their relationship with environmental variables in the lotic phase of four intermittent rivers in the karst Mediterranean region of Croatia. Considering that the studied intermittent rivers are hydrologically extreme environments, a total of 12 recorded mayfly species could be considered as rather high species richness. Nevertheless, species richness per river was quite low (between three and six), and was highly influenced by river morphology, physico-chemical water properties (especially conductivity, water velocity, and concentrations of dissolved oxygen), and anthropogenic pressures. Our results could contribute to the mayfly species protection in karst Mediterranean intermittent freshwater habitats in the Balkans, as well as to the development of conservation measures for those threatened habitats.https://www.mdpi.com/1424-2818/15/2/155Ephemeropteradiversityenvironmental variablestemporary habitatslotic habitats
spellingShingle Marina Vilenica
Fran Rebrina
Lea Ružanović
Mario Rumišek
Renata Matoničkin Kepčija
Andreja Brigić
Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?
Diversity
Ephemeroptera
diversity
environmental variables
temporary habitats
lotic habitats
title Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?
title_full Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?
title_fullStr Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?
title_full_unstemmed Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?
title_short Are Intermittent Rivers in the Karst Mediterranean Region of the Balkans Suitable as Mayfly Habitats?
title_sort are intermittent rivers in the karst mediterranean region of the balkans suitable as mayfly habitats
topic Ephemeroptera
diversity
environmental variables
temporary habitats
lotic habitats
url https://www.mdpi.com/1424-2818/15/2/155
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