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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 |
| 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 |
| Great Bentley Stream |
| Brook Street, Cuckfield |
| Shortbridge Stream |
| Maresfield, Underhill |
| Shortbridge |
| Norlington Stream |
| Wellingham Lane |
| River Ouse, Andrews Stream, Barcombe Mills | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| This sample was taken a short distance downstream 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...
This site scored poorly in 2005, but has since showed a good recovery. Some of the Gammaridae were infected with the parasite Echinorrhyncus. |
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| Location | River Ouse – Andrews Stream, Barcombe Mills. | |
| Date | 15th July 2007 | |
| Grid Reference | TQ433147 | |
| Notes | Long riffle 50m down stream from Pike's Bridge, open aspect. Mixed clay/gravel substrate, moderate flow (tidal), clear water with some filamentous algae and water moss. Weather humid and overcast. Some renovation work was in progress at the bridge. |
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| Also netted in this sample. | Water mites and a few empty limpet shells. |
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| Biological quality rating | B. Good biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Heptageniidae | Mayfly nynphs | 10 |
| Leptoceridae | Cased caddis | 10 |
| Sercostomatidae | Cased caddis | 10 |
| Goeridae | Cased caddis | 10 |
| Limnephilidae | Cased caddis | 7 |
| Polycentropodidae | Caseless caddis | 7 |
| Gammeridae | Shrimp | 6 |
| Tipulidae | Cranefly larva | 5 |
| Dytiscidae | Water beetle | 5 |
| Haliplidae | Water beetle | 5 |
| Hydropsychidae | Caseless caddis | 5 |
| Planariidae | Flatworms | 5 |
| Simuliidae | Blackfly larvae | 5 |
| Elminthidae | Riffle beetle | 5 |
| Baetidae | Mayfly nymphs | 4 |
| Sphaeriidae | Mussels | 3 |
| Asellidae | Hoglouse | 3 |
| Hydrobiidae | Snail | 3 |
| Lymnaeida | Snail | 3 |
| Chironomidae | Midge | 2 |
| Oligochaetae | Worm - Tubifex | 1 |
| Total Score | 114 | |
| ASPT (Average Score Per Taxon) | 5.43 |
|
November 2006
This is a very good result compared with November last year, with nearly double the BMWP score and a higher ASPT. | Location | River Ouse – Andrews Stream, Barcombe Mills. | |
| Date | 7th November 2006 | |
| Grid Reference | TQ433147 | |
| Notes | Good flow, gravel substrate, unshaded. |
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| Also netted in this sample. | Ribbon or Proboscis worm Prostoma spp. Water mites |
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| Biological quality rating | B. Good biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Ephemeridae | Mayfly | 10 |
| Brachycentridae | Caddis fly | 10 |
| Sercostomatidae | Caddis fly | 10 |
| Philopotamidae | Caddis fly | 8 |
| Limnephilidae | Caddis fly | 7 |
| Caenidae | Mayfly | 7 |
| Calopterygidae | Damsel fly | 7 |
| Gammeridae | Shrimp | 6 |
| Tipulidae | True fly | 5 |
| Dytiscidae | Beetle larva | 5 |
| Elmidae | Beetle - adult & larvae | 5 |
| Hydropsychidae | Caddis fly | 5 |
| Dendrocoelidae | Flatworm | 5 |
| Sphaeriidae | Mussel | 3 |
| Asellidae | Hoglouse | 3 |
| Hydrobiidae | Snail | 3 |
| Chironomidae | Midge | 2 |
| Total Score | 101 | |
| ASPT (Average Score Per Taxon) | 5.9 |
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November 2005
This result is slightly disappointing for a stream with abundant fish life with only a single Mayfly larva found. The low score may be due to the recent spate conditions which may have scoured the invertebrates out and reduced their numbers. | Location | River Ouse – Andrews Stream, Barcombe Mills. | |
| Date | 29th November 2005 | |
| Grid Reference | TQ433147 | |
| Notes | Moderate flow, gravel substrate, unshaded. |
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| Also netted in this sample. | An unidentified, empty caddis larval case was also found. |
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| Biological quality rating | C. Fair biological quality | |
| Water quality rating | Very good | |
| Species | Group | BMWP Score |
| Agriidae | Damselfly | 8 |
| Caenidae | Mayfly | 7 |
| Gammeridae | Shrimp | 6 |
| Unionidae | Mussel | 6 |
| Hydropsychidae | Caddis | 5 |
| Hydrophilidae | Beetle | 5 |
| Elminthidae | Riffle beetle (Adult & larva) | 5 |
| Simuliidae | Blackfly larva | 5 |
| Sphaeriidae | Mussel | 3 |
| Asellidae | Hoglouse | 3 |
| Chironomidae | Midge | 2 |
| Oligochaeta | Round worm | 1 |
| Total Score | 56 | |
| ASPT (Average Score Per Taxon) | 4.7 | |
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