THE NATIONAL RED LIST OF NORTH MACEDONIA

Floating Fern

Salvinia natans

Macedonian

Пловечка водена папрат, Пловечки папрат

Albanian

Bar peshku

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Not evaluated Data deficient Least concern Near threatened VULNERABLE Endangered Critically endangered Extinct in the wild Extinct
NE DD LC NT VU EN CR EW EX
Taxonomy
Assessment info
Population
Habitat and Ecology
Threats
Use and Trade
Conservation Actions
Bibliography

Taxonomy

Scientific name

Salvinia natans

Authority

(L.) All.

Synonyms

Marsilea natans L.; Salvinia europaea Desv.

Assessment info

IUCN Red List Category and Criteria

VU – Vulnerable, B1ab(i,ii,iii)+2ab(i,ii,iii)

Date assessed

November 2019

Assessors

Talevska, M.

Reviewers

Čarni, A.

Contributors

Matevski, V.

Cvetkoska, C.

Facilitators

Hofman, M.P.G.

Justification

Continuing decline in AOO, EOO and quality of habitats has been observed. One sub-population has dissappeared (Katlanovo Swamp).The population is not connected with the populations in the neighboring countries.

The species is Data Deficient (DD) according to the current European Red List assessment, and Least Concern species (LC) according to the global assessment.

Population

Current population trend

Unknown

Description

In surveys conducted in 2019, this species was recorded at 4 locations: Ohrid Lake (Studencishta Swamp and Kalishta), Asamati (Lake Prespa),  Star Dojran – Mrdaja (Lake Dojran),  Pelagonija-River Crna-before village of Novaci and before village of Toplcani, Monospitovo wetland and Kochani – Shtip (rice fields). In Dojran lake the sub-population is massively developed and stable.

The sub-population in Katlanovo Swamp was extinct.

Habitat and Ecology

System

Freshwater (=Inland waters)

Habitat and Ecology

Salvinia natans is free-floating, aquatic annual (perennial) water plant. It grows in shores of wetlands, lakes, canals, rice fields, and other places. The plant has been recorded in the shallow water near to common reed (Phragmites australis), together with other floating vegetation (Spirodela polyrrhiza, Lemna minor, and others).

Use and trade

Use and trade

This plant is used as ornamental plant for open aquariums, water gardens and ponds and can act as a good shading plant to prevent algae growth.
There is currently no known use, collection or trade of Salvinia natans in North Macedonia.

Threats

Threats

Major threats for Salvinia natans population in North Macedonia are changes in water levels in lakes and increase pollution in them, and also drying and pollution of others habitats where it is distributed (canals, rice fields, wetlands, and others).
The main threats in Ohrid Lake, Prespa Lake and Dojran Lake are reed belt cutting and expansion of beach surfaces.
The stands of sub-population in Pelagonija, Monospitovo Swamp and Gevgelija are affected by melioration for conversion in agriculture lands.
The sub-population in rice fields in Kochani and Shtip are affected by use of herbicides.
Melioration of Katlanovo Swamp resulted in the disappearance of that sub-population.

Conservation actions

Conservation actions

The shore line of the Ohrid Lake, where this species occurs, is declared as World Heritage Site by UNESCO. Areas of Prespa Lake (Ezerani) and Dojran Lake, where this species is presents, are Ramsar Sites. One of the species locality is Monospitovo – the largest wetland in North Macedonia which protection is priority.

Salvinia natans is listed on Annex II of the European Habitats Directive and it is found in protected areas throughout its range. 

Bibliography

Bibliography

IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1. Book. .p/.

Micevski, K. 1985. Flora na SR Makedonija MANU Skopje, 1(1): 1-157. .p 1-157.

Čado, I. 1971. Some physiographic and hydrological characteristics of the coastal zones of Lake Ohrid and Lake Prespa . .p 1-86.

Petkov S. 1910. La flore aquatique et algologique de la Macédoine du Sud-Ouest . Plovdiv. .p 195.

Micevski, B. 2003. Inventory of Macedonian wetlands (as natural resources) . Skopje. .p 72.

Grecescu, D. 1907. Plantae macedonicae din vilaieturile Monastir şi Salonic. .p 27-136.

Jakovlević S. 1934. Végétation macrophytique du lac de Prespa. .p 35-55.

Micevski, K. 1969. Vodna vegetacija na Ohridskoto i Prespanskoto Ezero. .p 61-80.

Jurišić, Ž. 1923. Prilog flori Južne Srbije. .p 1-45.

Stojanoff, N. 1928. Thracische und macedonische Herbarmaterijalen des Verstorbenen prof. Dr. Theodor Nikoloff. .p 49-209.

Micevski, K., 1963. Vodnata i blatnata vegetacija na Dojranskoto Ezero. .p 175-192.

Blazencič J. and Blazencič Z. 1997. Floristic characteristics of aquatic and marsh vegetation of Dojran Lake (Macedonia). .p 43-54.

Micevski, K. 1963. Tipoloshki istrazuvanja na blatnata vegetacija vo Makedonija. .p 79-130.

Christenhusz, M. and Raab-Straube, E. von. 2013.. Polypodiopsida . .p/.

Christenhusz, M.J.M. and Chase, M.W. 2014. Trends and concepts in fern classification . .p 571-594.

Christenhusz, M.J.M., Zhang, X.C. and Schneider, H. 2011. A linear sequence of extant families and genera of lycophytes and ferns. .p 7-54.

Pteridophyte Phylogeny Group (PPG I). 2016. A community-derived classification for extant lycophytes and ferns. 563–603. DOI: 10.1111/jse.12229 . .p/.