Distribution and habitat characteristics of Vallisneria spiralis L. in Croatia

Eight new localities of the rare, strictly protected macrophyte have been recorded during a comprehensive survey of water bodies in Croatia. One record is located in the Mediterranean Region, in Butoniga Reservoir, while the remaining records are from the Continental Region, the majority of them sit...

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Bibliographic Details
Published in:Hacquetia 2021-06, Vol.20 (1), p.7-18
Main Authors: Rimac, Anja, Alegro, Antun, Šegota, Vedran, Koletić, Nikola, Stanković, Igor, Bogdanović, Sandro, Vuković, Nina
Format: Article
Language:English
Subjects:
Aquatic habitats
Aquatic plants
Butoniga Reservoir
Geographical distribution
Kupa River
macrophytes
New records
Nutrient availability
Polls & surveys
Rare species
river ecology
Southeastern Europe
Vallisneria spiralis
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Summary:Eight new localities of the rare, strictly protected macrophyte have been recorded during a comprehensive survey of water bodies in Croatia. One record is located in the Mediterranean Region, in Butoniga Reservoir, while the remaining records are from the Continental Region, the majority of them situated along the Kupa River. occurred in slightly basic and alkaline environments and in a wide range of nutrient availability. In Continental localities, the species was present within of the alliance , while in Butoniga, it occurred within the vegetation of the alliance . Prior to our research, the species was recorded in Croatia only twice, with the older record dating back to the 19 century and the second from recent years, but neither one was confirmed in later surveys. The low number of records of in spite of a wide-ranging search through hundreds of localities, confirmed the rare status of this species, although the reasons for such limited distribution remain unclear, especially bearing in mind that suitable aquatic habitats are quite widespread in the country.
ISSN:1854-9829
1581-4661
1854-9829
DOI:10.2478/hacq-2020-0014