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Biological Monitoring Working Party
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| Introduction |
BMWP scores for the locations sampled by S.O.C.S. can be viewed below: |
| River Ouse |
| East Mascalls |
| Scaynes Hill - Main river |
| Scaynes Hill - Canal Cut |
| Sheffield Park |
| Barcombe Mills |
| River Uck |
| Hempstead Mill - Uckfield |
| Bevern Stream |
| Stoneywish Country Park |
| Spatham Lane |
| Streat Lane |
| Swansyard Farm |
| Holmans railway bridge |
| Clapper's Bridge |
| North End Stream |
| Cooksbridge |
| Hamsey Road |
| Plumpton Mill Stream |
| 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 |
| Norlington Stream |
| Wellingham Lane |
| Lewes Winterbourne |
| Lewes Railwaylands |
| Shortbridge Stream, Underhill, Maresfield. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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...
A good result with a wide range of species indicating a healthy environment. |
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| Location | Shortbridge Stream – Underhill, Maresfield. | |
| Date | 31st March 2008 | |
| Grid Reference | TQ468240 | |
| Notes | Riffle over clay/gravel substrate; low flow; moderate shade. |
|
| Also netted in this sample. |
Several dipteran larvae, one unidentified beetle (? Hydrochus), several Glossosomatidae |
|
| Biological quality rating | B. Good biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Heptageniidae | Mayfly larvae | 10 |
| Ephemeridae | Mayfly nymph | 10 |
| Odontoceridae | Cased caddis | 10 |
| Sericostomatidae | Cased Caddis | 10 |
| Goeridae | Cased caddis | 10 |
| Psychomyidae | Caseless caddis | 8 |
| Nemouridae | Stonefly larvae | 7 |
| Rhyacophilidae | Caseless caddis | 7 |
| Gammaridae | Shrimp | 6 |
| Simuliidae | Blackfly larvae | 5 |
| Planariidae | Flatworm | 5 |
| Hydropsychidae | Caseless caddis | 5 |
| Elminthidae | Riffle beetle | 5 |
| Baetidae | Mayfly larvae | 4 |
| Glossiphoniidae | Leech | 3 |
| Erpodellidae | Leech | 3 |
| Chironomidae | Midge larvae - bloodworms | 2 |
| Oligochaeta | Segmented worms - Tubifex | 1 |
| Total Score | 111 | |
| ASPT (Average Score Per Taxon) | 6.17 |
|
March 2008
This small, unpolluted stream gives consistently good results at this site. | Location | Shortbridge Stream – Underhill, Maresfield. | |
| Date | 19th March 2008 | |
| Grid Reference | TQ468240 | |
| Notes | Fast flowing riffle over gravel substrate, partly shaded. |
|
| Also netted in this sample. |
2 water mites (Hydrachnea spp.) 1 unidentified cocoon ? diptera. |
|
| Biological quality rating | B. Good biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Leptophlebiidae | Mayfly nymph | 10 |
| Ephemeridae | Mayfly nymph | 10 |
| Perlodidae | Stonefly | 10 |
| Leuctridae | Stonefly nymphs | 10 |
| Sericostomatidae | Cased Caddis | 10 |
| Goeridae | Cased caddis | 10 |
| Limnephilidae | Cased caddis | 7 |
| Rhyacophilidae | Caseless caddis | 7 |
| Gammaridae | Shrimp | 6 |
| Ancylidae | Limpet | 6 |
| Simuliidae | Blackfly larvae | 5 |
| Dendrocoelidae | Flatworm | 5 |
| Hydropsychidae | Caseless caddis | 5 |
| Tipulidae | Crane fly | 5 |
| Elminthidae | Riffle beetle | 5 |
| Baetidae | Swimming Mayfly nymphs | 4 |
| Glossiphoniidae | Leech | 3 |
| Erpodellidae | Leech | 3 |
| Chironomidae | Midge larvae - bloodworms | 2 |
| Oligochaeta | Tubifex | 1 |
| Total Score | 121 | |
| ASPT (Average Score Per Taxon) | 6.37 |
|
July 2007
The BMWP Score indicates water of ‘Fair biological quality' but an ASPT of over 5.4 is classed as very good. This is a good result although the biodiversity was expected to be better. This may be related to the lack of any submerged aquatic plants. | Location | Shortbridge Stream – Underhill, Maresfield. | |
| Date | 30th July 2007 | |
| Grid Reference | TQ468240 | |
| Notes | Fast flowing stream over mainly gravel substratum. Only lightly shaded. |
|
| Also netted in this sample. | Planorbis shell |
|
| Biological quality rating | C. Fair biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Leptophlebiidae | Mayfly nymph | 10 |
| Heptageniidae | Crawling (flattened) Mayfly nymphs | 10 |
| Odontoceridae | Cased Caddis | 10 |
| Sericostomatidae | Cased Caddis | 10 |
| Leuctridae | Stonefly nymphs | 10 |
| Limnephilidae | Cased caddis | 7 |
| Gammaridae | Shrimp | 6 |
| Simuliidae | Blackfly larvae | 5 |
| Baetidae | Swimming Mayfly nymphs | 4 |
| Piscicolidae | Fish leech | 4 |
| Glossiphoniidae | Leech | 3 |
| Erpodellidae | Leech | 3 |
| Chironomidae | Midge larvae - bloodworms | 2 |
| Oligochaeta | Tubifex | 1 |
| Total Score | 85 | |
| ASPT (Average Score Per Taxon) | 6.1 |
|
October 2006
This is the first biotic survey we have undertaken on the Shortbridge Stream, close to our chemical testing sampling site. The results demonstrate a healthy environment with good biodiversity. However, it is notable that no molluscs were identified.| Location | Shortbridge Stream – Underhill, Maresfield. | |
| Date | 2nd October 2006 | |
| Grid Reference | TQ468240 | |
| Notes | Recent rain, moderate flow, no turbidity, substrate stones and coarse gravel, shaded. |
|
| Also netted in this sample. | 2 Bullheads | |
| Biological quality rating | B. Good biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Ephemerellidae | Burrowing mayfly nymph | 10 |
| Heptageniidae | Crawling (flattened) Mayfly nymphs | 10 |
| Sericostomatidae | Cased Caddis | 10 |
| Leuctridae | Stonefly nymphs | 10 |
| Psychomyidae | Caseless caddis | 8 |
| Limnephilidae | Cased caddis | 7 |
| Gammaridae | Shrimp | 6 |
| Hydroptilidae | Caseless caddis | 6 |
| Dytiscidae | Diving beetle | 5 |
| Elminthidae | Riffle beetle | 5 |
| Simuliidae | Blackfly larvae | 5 |
| Dendrocoelidae | Flatworms | 5 |
| Baetidae | Swimming Mayfly nymphs | 4 |
| Piscicolidae | Fish leech | 4 |
| Glossiphoniidae | Leech | 3 |
| Asellus | Hoglouse | 3 |
| Chironomidae | Midge larvae - bloodworms | 2 |
| Oligochaeta | Tubificid | 1 |
| Total Score | 104 | |
| ASPT (Average Score Per Taxon) | 5.8 | |
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