Synthesis

Species description (Flora Helvetica 2018)

Mit oberirdischen Ausläufern, 3-12 cm hoch. Blätter in grundständiger Rosette, schmal-lineal, grasartig, oft rinnig, im Querschnitt nicht 4kammrig (vgl. Isoëtes), kahl. Einhäusig. Männliche Blüten einzeln auf langen Stielen, 6-8 mm lang, Krone weisslich, röhrenförmig, 4teilig, Staubfäden sehr lang, weit herausragend. Weibliche Blüten am Grund des Stiels der männlichen, meist zu 2, mit etwa 4 mm langer Krone und 12 mm langem Griffel. Frucht 2-2,5 mm lang.

Flowering period (Flora Helvetica 2018)

4-6(-9)

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Sandig-kiesige Seeufer / kollin / M, BO (Thunersee), südliches TI

World distribution (Flora Helvetica 2018)

Europäisch

Ecological indicator (Landolt & al. 2010)

4+w+32-442.h.2n=24
.

Distribution map

Simple

Before threshold year
After threshold year
Before and after threshold year

Advanced

Colors
Validated observations
Observations waiting for validation
Occurrences from Atlas Welten & Sutter (1982) and supplements (1984, 1994) without confirmation in the Info Flora database since
Symbols
Before threshold year
After threshold year
Native
Reintroduced
Not native / introduced / subspontaneous / escaped
Doubtful

Number of observations

Below the threshold number of observations
Above or equal the threshold number of observations

Ecology

Life form

Perennial hemicryptophyte

Habitats

Habitats Delarze & al. 2015

Character species 2.1.3 - Strandlingsgesellschaften (Littorellion)

bold Dominant species, influencing the appearance of the habitat
Character species Character species
Less strictly linked to a specific habitat Less strictly linked to a specific habitat

Ecological indicator values by Landolt & al. (2010)

Soil factors Climatic factors Salinity tolerance
Humidity Value H 4+w+ Light Value L 4 Salinity Index --
Reaction Value R 3 Temperature factor T 4
Nutriments value N 2 Continentality K 2
  • Ecological values legend
    Humidity Value H
    1very dry
    1+dry
    2moderatly dry
    2+moist
    3medium wet
    3+wet
    4very wet
    4+soggy
    5submerged or underwater
    fplants living in running water
    umostly submerged plants
    vpartly submerged, partly floating plants
    whumidity moderately variable (± scale of 1-2)
    w+highly variable humidity (scale exceeding ± 2)
    Reaction Value R
    1Very acid (pH 2.5-5.5)
    2acid (pH 3.5-6.5)
    3lightly acid to neutral (pH 4.5-7.5)
    4neutral to basic (pH 5.5-8.5)
    5basic (pH 6-5 -> 8.5
    Nutriments value N
    1very low in nutrients
    2low in nutriments
    3medium-poor to medium-rich in nutrients
    4rich in nutriments
    5very rich in nutriments
    Salinity tolerance
    1halotolerant
    3halophyle
    Light Value L
    1very shady
    2shady
    3lighted areas
    4luminous
    5highly luminous
    Temperature factor T
    1alpine to nival stages (from the treeline to the snowline)
    1+suprasubalpine and upper subalpine levels (pine and larch forests)
    2subalpine level (coniferous forests without beeches up to the upper limit of spruces)
    2+lower subalpine and upper mountain stages
    3mountain level (beech and silver fir forests, in the central Alps Scots pine forests)
    3+lower mountain and upper hill levels
    4hill level (mixed deciduous oak forests)
    4+hot places, hill level
    5very hot places, hill level (only in the hottest places, typical of southern Europe)
    Continentality K
    1Atlantic (high air humidity, very low temperature variations, mild winters)
    2Sub-Atlantic (high air humidity, low temperature variations, relatively mild winters)
    3sub-Atlantic to subcontinental (average air humidity, moderately variable temperature, slightly low winter temperatures)
    4subcontinental (low air humidity, large temperature variations, rather cold winters)
    5continental (very low air humidity, very large temperature variations, cold winters)

Water dependency

Rivers 0 - No link
Calm water 2 - Essential habitat
Ground water 0 - No link

Nomenclature

Vernacular name

Deutscher Name:
Strandling
Nom français:
Littorelle uniflore
Nome italiano:
Littorella

Match with other reference books

Relation Nom Book No
=Littorella uniflora (L.) Asch.Checklist 2017242400
=Littorella uniflora (L.) Asch.Flora Helvetica 20011728
=Littorella uniflora (L.) Asch.Flora Helvetica 20121644
=Littorella uniflora (L.) Asch.Flora Helvetica 20181644
=Littorella uniflora (L.) Asch.Index synonymique 1996242400
=Littorella uniflora (L.) Asch.Landolt 19772770
=Littorella uniflora (L.) Asch.Landolt 19912252
=Littorella uniflora (L.) Asch.SISF/ISFS 2242400
=Littorella uniflora (L.) Asch.Welten & Sutter 19821641

= The taxon corresponds to the accepted taxon (Checklist 2017)
< The taxon is included in the accepted taxon (Checklist 2017)
> The taxon includes (among others) also the accepted taxon (Checklist 2017)

Status

Native status   -  -

Status on national Red List 2016

IUCN status:   Endangered

LC: Non menacé

Additional information

IUCN criteria: C1

Status on regional Red List 2019

Biogregraphic regions Status IUCN criteria
Jura (JU) RE
Mittelland (MP) ENC1
Alpennordflanke (NA) ENC1
Westliche Zentralalpen (WA) RE
Östliche Zentralalpen (EA) --
Alpensüdflanke (SA) ENC1
  • Legend
    EXExtinct
    RERegionally Extinct
    CR(PE)Critically Endangered, Probably Extinct
    CRCritically Endangered
    ENEndangered
    VUVulnerable
    NTNear Threatened
    LCLeast Concern

IUCN list of endangered species (Walter & Gillett 1997)

No

National Priority Species List Status

National Priority 3 - medium national priority
Need to take action 2 -
International responsibility 1 - weak
Need to monitor populations 2 -

Protection status

International (Bern Convention) No
GEtotal protection (25.07.2007)
TGtotal protection (01.01.2018)
Switzerland --
VDtotal protection (02.03.2005)
TItotal protection (23.01.2013)
  • Disclaimer
    InfoFlora compiles information on protected species as accurately as possible, taking it from the respective cantonal laws. In some cases, however, it was not possible to use the plant names as listed in the original text, but an interpretation of their taxonomy or nomenclature was necessary. The exact meaning of the categories „completely protected“ and „partially protected“ differs among the cantons.

    InfoFlora cannot guarantee that the information on the protection status is correct and complete. In case of doubts, we recommend to look up the texts of the respective cantonal law.

Threats and measures

Regulierung des Wasserstandes (Stauung)

Wo immer möglich: keine Regulierung des Wasserstandes! Natürliche Seespiegelschwankungen weiterhin zulassen bzw. fördern

Eutrophierung (früher Einleitungen, heute aus der Luft), dichte Algenwatten (besonders 70er und 80er Jahre, heute weniger)

Wasserschutzmassnahmen weiterführen
nicht sauber geklärte Einläufe sanieren
allfällige Algenwatten vorsichtig von Hand oder maschinell entfernen (nach jedem Hochwasser!)

Überbauung und Befestigungen jeglicher Art, Stege, Bootsanlegeplätze, Überkiesungen (z. B. Badestrände)

Prioritäre Erhaltung der bestehenden Lebensräume
Koordination von Bauprojekten zugunsten der Art

Veränderte Strömungsdynamik (Befestigungen etc.)

Einbezug der Strömungsdynamik in die Planung

Konkurrenz (Phalaris arundinacea, Phragmites australis, Agrostis stolonifera, Carex acuta, C. elata; bei den drei letzten nützt die Mahd nichts!)

Einzelpflanzen ausreissen (P. arundinacea, C. acuta)
zweimal pro Jahr mähen (P. australis. P. arundinacea, flächig nur falls gefroren)
Soden entfernen (A. stolonifera)
aushacken (C. elata)

Lagerfeuer, Verbrennen von Mähgut direkt am Strand

Mähgut immer entfernen, keine Feuer im direkten Strandbereich

Verbuschung, Beschattung, Laubfall

Entbuschen
auslichten (z. B. aufwachsende Kopfweiden)

Intensive touristische Nutzung (Baden, Surfen, Segeln, Camping)

Schutzgebiete
aktuelle Fundorte z. T. einzäunen oder absperren

Kleine, isolierte Populationen

Ex situ-Vermehrung für Wiederansiedlungen
bestehende Pflegemassnahmen weiterführen
Erfolgskontrolle

Ex situ material

In-situ measures