Biological Monitoring Working Party

BMWP Results


Introduction
 

BMWP scores for the locations sampled by S.O.C.S. can be viewed below:

East Mascalls
Scaynes Hill - Main river
Scaynes Hill - Canal Cut
Sheffield Park
Barcombe Mills
Hempstead Mill - Uckfield
Stoneywish Country Park
Spatham Lane
Streat Lane
Swansyard Farm
Holmans railway bridge
Clapper's Bridge
Cooksbridge
Hamsey Road
Plumpton Mill
Ferrings Bridge
Longford Stream
Cinder Hill, Chailey
Ridgelands Lane - Newick
Longford Bridge
Pellingford Brook
Near Scaynes Hill
Scrase Stream
Lindfield
Great Bentley Stream
Brook Street, Cuckfield
Shortbridge Stream
Maresfield, Underhill
Shortbridge
Wellingham Lane
Lewes Winterbourne
Lewes Railwaylands
 
River Uck, Hempstead Mill , Uckfield
 
This sample was taken a short distance from where we perform chemical tests each month on the quality of the water. We intend to carry out biological tests at this site on a regular basis to monitor the long term effects that water quality has on invertebrate life in the stream.
See the latest water quality test results for this location...


September 2009

Our first invertebrate survey at this site by kind permission of Mr. A.Kilby. This is a good result with impressive biodiversity for an impounded section of the river.

Location River Uck – Hempstead Mill – Uckfield (Upstream of sluice)
Date 15th September 2009
Grid Reference TQ484218
Notes

Deep water (> 1.5 metres), no measurable flow, open aspect. Samples taken close to the bank using standard “pond dipping” technique

Also netted in this sample. 5 sticklebacks, water mites, daphnia, unidentified empty caddis cases.
Biological quality rating B. Good biological quality
Water quality rating Very good
Species Group BMWP Score

Taeniopterygidae

Stonefly nymph 10

Ephemeridae

Mayfly 10
Leptoceridae Cased Caddis 10

Goeridae

Cased caddis 10
Calopterygidae Damselfly nymph 8
Rhyacophilidae Caseless caddis 7

Polycentropidae

Caseless caddis 7
Limnephilidae Cased caddis 7
Gammaridae Shrimp 6

Dytiscidae

Diving Beetle larva 5
Coryxidae Water boatman 5
Piscicolidae Fish leech 4
Baetidae Mayfly nymph 4

Erpobdellidae

Leech 3
Asellidae Hoglouse 3
Physidae Snail 3
Chironomidae Midge larvae - bloodworms 2
Oligochaeta Round worms - Tubifex 1
Total Score 105
ASPT (Average Score Per Taxon) 5.83