Red List habitat classification > RLC - Freshwater habitats > RLC3.5b Periodically exposed shore with stable, mesotrophic sediments with pioneer or ephemeral vegetation

Periodically exposed shore with stable, mesotrophic sediments with pioneer or ephemeral vegetation

Quick facts

Red List habitat type code RLC3.5b
Threat status
Europe Vulnerable
EU Vulnerable
Relation to
Source European Red List habitat factsheet
European Red List of habitats reports
European Red List of habitats (Excel table)

Summary

This habitat type is found along the periodically emergent shorelines of rivers, on exposed bottoms of permanent lakes and ponds, in wetlands at the edges of arable lands and rarely in ephemeral flush habitats. In rivers and lakes, the timing of exposure of their shoreline depends on the precipitation seasonality and on the time of snowmelt. This habitat type includes also artificial ponds drained in summer in intervals of several years as a part of their management. This habitat type must not be confused with Mediterranean vernal pools, which are instead included in the habitat type C1.6b. The habitat types here considered is characterized by pioneer ephemeral vegetation developing especially in summer and autumn. Plants growing in these environments are mainly annual, low-growing and competitively weak species from various families. Well-represented genera include Cyperus, Elatine, Juncus, Ranunculus, Spergularia and Veronica. Vegetation is usually short and open, and its cover increases with successional stage. Some stands are dominated by single species while others are co-dominated by several species. In some cases, especially on exposed pond bottoms and on river shores, the successional stage with short-growing ephemeral wetland species is followed, especially after water draw-down, by a stage with tall-growing annuals such Bidens, Chenopodium, Persicaria and Rumex maritimus. This succession results in a change of this habitat type into the habitat type C3.5a.

Indicators of good quality:

  • Occurrence in natural environments such as shores of unregulated rivers, natural lakes, pools or ephemeral flush habitats
  • Occurrence of rare wetland species
  • Absence or low incidence of competitive, tall-growing and nutrient-demanding wetland herbs
  • Absence or low incidence of neophytes

Characteristic species
For full habitat description, please download the habitat factsheet.

Threat status

Synthesis of Red List assessment

The data available for the assessment represent only around the 30% of the countries in which the habitat is expected to occur. Some countries reported a wide range of trend in quantity which causes uncertainty in the average trend of the habitat (criterion A1), with values ranging between Least Concern (LC) and Vulnerable (VU). Using these uncertain data, the habitat has been assessed as Vulnerable, taking into account trend in quality (criterion C/D1), with values very close to the thresholds of Vulnerable.
EU
Red List Category Red List Criteria
Vulnerable A1
Europe
Red List Category Red List Criteria
Vulnerable A1

Confidence in the assessment

low
Red List of habitat categories and criteria descriptions

Pressures and threats

  • Biological resource use other than agriculture & forestry
    • Marine and Freshwater Aquaculture
    • Intensive fish farming, intensification
    • Fishing and harvesting aquatic resources
  • Pollution
    • Pollution to surface waters (limnic, terrestrial, marine & brackish)
    • Soil pollution and solid waste (excluding discharges)
  • Invasive, other problematic species and genes
    • Invasive non-native species
  • Natural System modifications
    • Human induced changes in hydraulic conditions
    • Landfill, land reclamation and drying out, general
    • Removal of sediments (mud...)
    • Flooding modifications
    • Modification of hydrographic functioning, general
    • Water abstractions from surface waters
    • Water abstractions from groundwater
    • Abandonment of management of water bodies
  • Climate change
    • Changes in abiotic conditions
    • Droughts and less precipitations
    • Flooding and rising precipitations
    • Changes in biotic conditions
    • Habitat shifting and alteration
    • Desynchronisation of processes

Habitat restoration potential

The capacity of this habitat to recover naturally differs according to the type of damage that the habitat has undergone. If the damage is due to eutrophication or pollution, that is the most common case, the habitat difficulty can recover naturally. In these cases intervention through removal or substitution of polluted soil should be done. Removing the polluted soil and the causes of pollution the habitat can be restored in relatively short time, 10 years. If the soil seed bank is removed from the water body, intervention through reintroduction of species could be necessary.

Trends in extent

Average current trend in quantity

Decreasing Decreasing
EU28 EU28+

Trends in quality

Average current trend in quality

Decreasing Decreasing
EU28 EU28+

Conservation and management needs

The conservation and management should include actions leading to a correct management of water abstraction, agricultural and industrial activities in the surrounding and fish farming. The restoration and improvement of the water quality and hydrological regime of fishponds, natural pools and river beds may be necessary in those cases where the habitat is damaged. Such habitat can be in contact with crops, or developing in water bodies used as water supplies for agricultural purposes. In such cases the habitat could be favoured by adopting sustainable crops, limiting the use of fertilizers and biocides, rather than intensive crops.

List of conservation and management needs

  • Measures related to agriculture and open habitats
    • Other agriculture-related measures
  • Measures related to wetland, freshwater and coastal habitats
    • Restoring/Improving water quality
    • Restoring/Improving the hydrological regime
    • Managing water abstraction
  • Measures related to spatial planning
    • Manage landscape features
  • Measures related to hunting, taking and fishing and species management
    • Regulation/Management of fishery in limnic systems
  • Measures related to urban areas, industry, energy and transport
    • Urban and industrial waste management

Distribution

For each habitat a distribution map was produced from a wide variety of sources indicating known and potential occurrences of the habitat in 10x10 km grids within Europe. Occurrences in grid cells were given in two classes: actual distribution from relatively reliable sources (surveys, expert knowledge), and potential distribution based on models or less reliable indicators. Please download the fact sheet to see the map.

Geographic occurrence and trends

EU28 Present or presence uncertain Current area of habitat (Km2) Recent trend in quantity (last 50 years) Recent trend in quality (last 50 years)
Austria Present unknown Unknown Unknown
Belgium Present unknown Unknown Unknown
Bulgaria Present 16.6 Decreasing Decreasing
Croatia Present 1 Decreasing Decreasing
Czech Republic Present 6 Stable Decreasing
Denmark Present unknown Unknown Unknown
France mainland Present 100 Decreasing Decreasing
Corsica Present 100 Decreasing Decreasing
Germany Present unknown Decreasing Decreasing
Hungary Present 10 Decreasing Decreasing
Ireland Present unknown Unknown Unknown
Italy mainland Present 6 Decreasing Decreasing
Latvia Present unknown Unknown Unknown
Lithuania Present 1 Stable Stable
Luxembourg Uncertain unknown Unknown Unknown
Netherlands Present 1.7 Unknown Stable
Poland Present unknown Unknown Unknown
Portugal mainland Present unknown Unknown Unknown
Romania Present unknown Unknown Unknown
Slovakia Present unknown Unknown Unknown
Spain mainland Present 9 Decreasing Decreasing
Sweden Present unknown Unknown Unknown
United Kingdom Present unknown Unknown Unknown
Northern Island Present unknown Unknown Unknown
Gibraltar Present unknown Unknown Unknown
Sardinia Present 6 Decreasing Decreasing
Sicily Present 6 Decreasing Decreasing
Estonia Uncertain unknown Unknown Unknown
Finland mainland Uncertain unknown Unknown Unknown
Aland Islands Uncertain unknown Unknown Unknown
EU28 + Present or presence uncertain Current area of habitat (Km2) Recent trend in quantity (last 50 years) Recent trend in quality (last 50 years)
Albania Uncertain unknown Unknown Unknown
Bosnia and Herzegovina Present 3 Decreasing Decreasing
Iceland Present unknown Unknown Unknown
Kaliningrad Uncertain unknown Unknown Unknown
Kosovo Uncertain unknown Unknown Unknown
Former Yugoslavian Republic of Macedonia (FYROM) Uncertain unknown Unknown Unknown
Montenegro Uncertain unknown Unknown Unknown
Norway Mainland Uncertain unknown Unknown Unknown
Svalbard Uncertain unknown Unknown Unknown
Jan Mayen Uncertain unknown Unknown Unknown
Switzerland Present 1.5 Decreasing Decreasing

Extent of Occurrence, Area of Occupancy and habitat area

Extent of Occurrence (EOO) (Km2) Area of Occupancy (AOO) Current estimated Total Area Comment
EU28 6007850 1986 136 Only 33% of the countries in which the habitat is expected to occur provided the total area
EU28+ 2000 141 Only 30% of the countries in which the habitat is expected to occur provided the total area
AOO = the area occupied by a habitat measured in number of 10x10 km grid cells.
EOO = the area (km2) of the envelope around all occurrences of a habitat (calculated by a minimum convex polygon).

Characteristic species

The full list of characteristic species and genus are available above from the Summary. The species available in the EUNIS database are shown here.
Birds Charadrius dubius
Birds Himantopus himantopus
Birds Recurvirostra avosetta
Birds Sterna albifrons
Birds Vanellus vanellus
Flowering Plants Blackstonia acuminata
Flowering Plants Carex bohemica
Flowering Plants Centaurium pulchellum
Flowering Plants Centunculus minimus
Flowering Plants Cerastium dubium
Flowering Plants Coleanthus subtilis
Flowering Plants Cyperus fuscus
Flowering Plants Elatine alsinastrum
Flowering Plants Eleocharis acicularis
Flowering Plants Fimbristylis annua
Flowering Plants Glinus lotoides
Flowering Plants Gnaphalium uliginosum
Flowering Plants Gypsophila muralis
Flowering Plants Hypericum humifusum
Flowering Plants Illecebrum verticillatum
Flowering Plants Isolepis setacea
Flowering Plants Juncus bufonius
Flowering Plants Koenigia islandica
Flowering Plants Limosella aquatica
Flowering Plants Lindernia procumbens
Flowering Plants Ludwigia palustris
Flowering Plants Lythrum hyssopifolia
Flowering Plants Mentha pulegium
Flowering Plants Myosurus minimus
Flowering Plants Plantago major subsp. intermedia
Flowering Plants Potentilla norvegica
Flowering Plants Pulicaria vulgaris
Flowering Plants Pycreus flavescens
Flowering Plants Radiola linoides
Flowering Plants Ranunculus flammula
Flowering Plants Rumex maritimus
Flowering Plants Sagina apetala
Flowering Plants Samolus valerandi
Flowering Plants Schoenoplectus supinus
Flowering Plants Spergularia echinosperma
Flowering Plants Tillaea aquatica
Flowering Plants Verbena supina
Flowering Plants Veronica anagalloides
Invertebrates Hirudo medicinalis
Invertebrates Lepidurus apus
Invertebrates Triops cancriformis
Mosses & Liverworts Leptobryum pyriforme
Mosses & Liverworts Physcomitrella patens
Mosses & Liverworts Physcomitrium eurystomum
Reptiles Natrix natrix
Species scientific name English common name Species group
Charadrius dubius Little Ringed Plover Birds
Himantopus himantopus Black-winged Stilt Birds
Recurvirostra avosetta Avocet Birds
Sterna albifrons Little Tern Birds
Vanellus vanellus Lapwing Birds
Blackstonia acuminata Flowering Plants
Carex bohemica Flowering Plants
Centaurium pulchellum Flowering Plants
Centunculus minimus Flowering Plants
Cerastium dubium Flowering Plants
Coleanthus subtilis Flowering Plants
Cyperus fuscus Flowering Plants
Elatine alsinastrum Flowering Plants
Eleocharis acicularis Flowering Plants
Fimbristylis annua Flowering Plants
Glinus lotoides Flowering Plants
Gnaphalium uliginosum Flowering Plants
Gypsophila muralis Flowering Plants
Hypericum humifusum Flowering Plants
Illecebrum verticillatum Flowering Plants
Isolepis setacea Flowering Plants
Juncus bufonius Flowering Plants
Koenigia islandica Flowering Plants
Limosella aquatica Flowering Plants
Lindernia procumbens Flowering Plants
Ludwigia palustris Flowering Plants
Lythrum hyssopifolia Flowering Plants
Mentha pulegium Flowering Plants
Myosurus minimus Flowering Plants
Plantago major subsp. intermedia Flowering Plants
Potentilla norvegica Flowering Plants
Pulicaria vulgaris Flowering Plants
Pycreus flavescens Flowering Plants
Radiola linoides Flowering Plants
Ranunculus flammula Flowering Plants
Rumex maritimus Flowering Plants
Sagina apetala Flowering Plants
Samolus valerandi Flowering Plants
Schoenoplectus supinus Flowering Plants
Spergularia echinosperma Flowering Plants
Tillaea aquatica Flowering Plants
Verbena supina Flowering Plants
Veronica anagalloides Flowering Plants
Hirudo medicinalis Invertebrates
Lepidurus apus Invertebrates
Triops cancriformis Invertebrates
Leptobryum pyriforme Mosses & Liverworts
Physcomitrella patens Mosses & Liverworts
Physcomitrium eurystomum Mosses & Liverworts
Natrix natrix Grass snake Reptiles

Vegetation types

Relation to vegetation types (syntaxa)

Not available
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