Broadmoor to Bagshot Woods and Heaths SSSI - RAPLEY LAKES (008)
Staff member responsible: DES SUSSEX
Unit Id: 1026419
Unit area (ha): 7.8761
Unit Status: Live Gridref: SU 900 646
Main habitat: STANDING OPEN WATER AND CANALS
Condition and Comments (click for history): Favourable Assessed by: AUSTIN, (EMMA)
Last assessed: 22/03/2017 Last assessment field visit: 15/03/2017
ISA Survey: View Surveys
Date of last site check: Last CSM assessment: 21/03/2017
Estimated year unit will go Favourable: Confidence in estimate:
Comment:

The interest feature for this unit is the dragonfly assemblage. For the unit to be considered to be in favourable condition, at least 15 species should be confirmed present as breeding. The main breeding habitat is found at 4 waterbodies - Mill Pond, Rapley Lake, and 2 woodland ponds east of ‘Lake Cottage’ - plus associated mire, and streams and ditches. Data for the period 2011-2016 confirm 23 species have been recorded, of which at least 21 are resident or occur regularly. Breeding evidence was confirmed for 16 species, with a further 4 highly likely to have resident breeding populations. These include the notable species small red damselfly, downy emerald, brilliant emerald, keeled skimmer and black darter.

The ponds and ditches have a good balance of native aquatic and marginal vegetation. Habitat conditions around the ponds have been subject to significant management effort since the last assessment. This has focussed on attempts at eradication of Rhododendron around the pond margins and in adjacent woodland. This will improve prospects for development of more appropriate and beneficial marginal and aquatic vegetation. In addition, there have been some changes to the structural diversity in the forest areas close to the ponds - this has increased the availability of warm, sunny ‘glades’.

The important patches of wet heath and mire habitats in areas around Mill Pond and other parts of the forest are of high nature conservation value, and these are generally fairly free of invasive scrub and shading trees, but there is scope to enhance these areas to the benefit fo the dragonflies and other locally important flora and fauna.

 

There is also a good diversity and provision of important dragonfly breeding habitats (ponds, mire, streams & ditches) in other parts of the SSSI, notably in units 7, 10,11,12 and 14. Although the dragonfly assemblage is not a specific interest feature of those units they merit conservation management and they do help the local populations of common and scarce species.

 

Data was kindly supplied by Berkshire Odonata Recording Group

Number of adverse condition reasons: 0
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