Integrated assessment of the status of Fish fauna Reproduction Areas (Integrated IcRH Index)
| Autor: | Marinov, Marin, Todorov, Doychin, Pehlivanov, Luchezar, Apostolou, Apostolos |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Ecologia Balkanica, Vol Special edition, Iss 4, Pp 65-78 (2021) |
| DOI: | 10.5281/zenodo.4643699 |
| Popis: | Fish fauna reproduction areas (FRA) are natural habitats that provide conditions for sustainable reproduction of fish species populations. In order to preserve them from antropogenic pressures, it is necessary to monitor the integrity of both biotic and abiotic environmental components, which ensure prerequisites for sustainable reproduction of fish fauna. In the monitoring studies carried out in September-November 2020 a pilot approach was applied for integrated assessment of the suitability of streams within the catchments of the Iskar and Vit rivers as fish fauna reproduction areas. The studies were performed, adopting the following basic principles for integrated assessment: 1) Applying an ecosystem approach by identifying two main ecosystem components in assessing the status of the FRAs: • Biotic Component (1) „Ichthyocenosе” (Ic) apparated by 6 criteria, which include the main biotic metrics; • Abiotic Component (2) “Reproduction habitat” (HR) apparated by 5 criteria, including basic hydromorphological and physicochemical quality metrics. 2) Equal weight of the two components in the integrated assessment of the state of the potential fish fauna reproduction areas; 3) Application of standardized methodologies and available data in the estimation of the two components and the calculation of the integrated IcRH index. The development of the integrated approach was carried out with data from the river type R2 Mountain rivers in Ecoregion 12 Pontic province. Its application for assessment to other types of aquatic ecosystems needs to be validated with additional monitoring data. The integrated approach was developed and tested for the river type R2 Mountain rivers in Ecoregion 12 Pontic province. Its application for other types of surface waters (rivers and lakes) will be further validated with additional data. freshwater protected areas |
| Databáze: | OpenAIRE |
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