Saturday 15 June
Shore dock (Rumex rupestris)
Shore dock fact file
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Shore dock description
A rare member of an otherwise familiar group of plants, shore dock has greyish green leaves and tiny green or reddish-brown flowers, appearing between June and August, in whorls that spread out up the stem.
- Oseille des Rochers.
- Stem length: up to 70 cm
Shore dock biology
Shore dock has been found growing in isolation on the strand line, and in perennial communities at the foot of cliffs. However, it occurs only where a constant source of freshwater (running or still) is available. It is most commonly found growing by the side of streams entering beaches, and on soft-rock cliffs with fresh water seeps. In this environment, shore dock is vulnerable to bad weather, and populations are known to fluctuate according to the severity of winter storms.Top
Shore dock range
Shore dock is declining across its worldwide range, along the Atlantic coasts of Britain, France and Spain. Its UK range includes Anglesey, South Devon, Cornwall and the Isle of Scilly.Top
Shore dock habitat
This species grows on rocky cliffs, sandy and raised beaches, shore platforms and the lower slopes of cliffs, and rarely in dune slacks.Top
Shore dock status
Shore dock (Rumex rupestris) is classified as Vulnerable (VU) on the IUCN Red List (1). It is also fully protected under Schedule 8 of the Wildlife and Countryside Act as amended, and EC Habitats Directive Annex 11(b) and 1V(b).Top
Shore dock threats
Visitor pressure, coastal defence, and the construction on beaches of boat-ramps have damaged many of the shore dock's former sites. Another threat comes from climate change and the prospect of increasingly stormy seas and sea level rise. The increase in the number of invasive plants, particularly the succulent pink-flowered Hottentot fig Carpobrotus edulis from southern Africa, also poses a problem.Top
Shore dock conservation
The shore dock is listed in the UK Biodiversity Action Plans (UK BAP), and is included in English Nature's Species Recovery Programme. Many of the UK sites for this plant are owned and managed by conservation bodies. Plantlife, the wild plant conservation charity, have added shore dock to their 'Back from the Brink' programme. A number of ways of restoring the plant's fortunes are currently being explored, including a re-introduction project on three sites in Devon and Cornwall.Top
Find out more
More information on the shore-dock is available on the JNCC website at:
This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
- Dune slacks
- Depressions between sand dunes that are often wet during the winter.
- Plants that live for at least three seasons; after an initial period they produce flowers once a year.
- Strand line
- A line of debris left on a beach by the high tide, often consisting of seaweed, driftwood and animal remains.
- In animals, the spiral or convolutions in the shell of a snail. In plants, a set of leaves, flowers, or branches that spring from a stem at the same point and encircle it.
IUCN Red List (June, 2011)
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