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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 |
| Bevern Stream, downstream from Clapper's Bridge, Barcombe | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| This sample was taken 1/2 km downstream from where we perform chemical tests each month on the quality of the water. This is the nearest place downstream from Clapper's Bridge with suitable depth and flow of water for carrying out a kick sample. 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... August 2010Roughly the same score as found in May 2010.
A diverse sample but with many low scoring organisms |
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| Location | Bevern Stream –Clappers Weir , Barcombe. | |
| Date | 11th May 2010 | |
| Grid Reference | TQ424162 | |
| Notes | Moderate flow, mainly silt/clay substrate. Profusion of algae growing in mid stream |
|
| Also netted in this sample. | Large Bullhead ( Cottus gobio), Water mires (Acaridae) | |
| Biological quality rating | B. Good biological quality | |
| Water quality rating | Good | |
| Species | Group | Score |
| Ephemerellidae | Mayfly larva | 10 |
| Leptophlebiidae | Mayfly larva | 10 |
| Leptoceridae | Cased caddis fly larva | 10 |
| Caenidae | Mayfly nymph | 7 |
| Glossosomatidae | Cased caddis fly larva | 7 |
| Ancylidae | River Limpet | 6 |
| Gammaridae | Shrimp | 6 |
| Hydroptilidae | Cased caddis fly larva | 6 |
| Hydropsychidae | Caseless caddis fly larva | 5 |
| Simuliidae | Blackfly | 5 |
| Elmidae | Riffle beetle | 5 |
| Baetidae | Mayfly nymphs | 4 |
| Sphaeriidae | Mussels | 3 |
| Glossiphoniidae | Leech | 3 |
| Erpodellidae | Leech | 3 |
| Lymnaeidae | Snail | 3 |
| Hydrobiidae | Snail | 3 |
| Planorbiidae | Snail | 3 |
| Chironomidae | Midge larvae | 2 |
|
Oligochaetae |
Round worm | 1 |
| Total Score | 102 | |
| ASPT (Average Score Per Taxon) | 5.1 | |
April 2009
A reasonable result notable for a new species of cased caddis of the genus Hydroptilidae. | Location | Bevern Stream –Clappers Weir , Barcombe. | |
| Date | 22nd April 2009 | |
| Grid Reference | TQ424162 | |
| Notes | Moderate flow over silt & gravel, unshaded. |
|
| Also netted in this sample. | One Bullhead fry, water mites and a Geophilidae (Centipede) | |
| Biological quality rating | C. Fair biological quality | |
| Water quality rating | Good | |
| Species | Group | Score |
| Ephemerellidae | Mayfly nymph | 10 |
| Ephemeridae | Mayfly nymph | 10 |
| Leptoceridae | Cased caddis | 10 |
| Caenidae | Mayfly nymph | 7 |
| Ancylidae | Limpet | 6 |
| Gammaridae | Shrimp | 6 |
| Hydroptilidae | Cased caddis | 6 |
| Hydropsychidae | Caseless Caddis fly | 5 |
| Simuliidae | Blackfly | 5 |
| Elminthidae | Riffle beetle | 5 |
| Tipulidae | Cranefly | 5 |
| Baetidae | Mayfly nymphs | 4 |
| Asellus | Hoglouse | 3 |
| Sphaeriidae | Mussels | 3 |
| Chironomidae | Midge larvae | 2 |
|
Oligochaetae |
Round worm | 1 |
| Total Score | 88 | |
| ASPT (Average Score Per Taxon) | 5.5 | |
January 2009
Very high numbers of Hydropsychidae are characteristic of this site. This is the best score here so far, but there is poor biodiversity. | Location | Bevern Stream –Clappers Weir , Barcombe. | |
| Date | 6th January 2009 | |
| Grid Reference | TQ424161 | |
| Notes | Fast flowing riffle over clay/gravel substrate. Open aspect, no submerged vegetation. |
|
| Also netted in this sample. | 1 stoneloach, water mites |
|
| Species | Group | BMWP Score |
| Ephemeridae | Mayfly | 10 |
| Odontoceridae | Cased caddis | 10 |
|
Rhyacophilidae |
Caseless caddis | 7 |
| Polycentropodidae | Caseless caddis | 7 |
| Gammaridae | Shrimp | 6 |
| Ancylidae | Limpet | 6 |
| Hydropsychidae | Caseless caddis | 5 |
| Elminthidae | Riffle beetles (adult and larvae) | 5 |
| Tipulidae | Cranefly larvae |
5 |
| Simuliidae | Blackfly larvae | 5 |
| Baetidae | Mayfly nymphs | 4 |
| Sphaeriidae | Mussel | 3 |
Planorbiidae |
Snail | 3 |
| Chironomidae | Midge | 2 |
| Oligochaeta | Worm | 1 |
| Total Score | 79 | |
| ASPT (Average Score Per Taxon) | 5.27 | |
November 2007
A BMWP Score of 61 is rated as fair biological quality and the ASPT also as fair. This is an almost identical result to the test taken in October 07 and probably reflects the results of the recent spillage of sewage but it should be noted that biodiversity is reduced by the dominance of strong competitors like the hydropsychid net-spinning caddis larvae. | Location | Bevern Stream –Clappers Weir , Barcombe. | |
| Date | 15th November 2007 | |
| Grid Reference | TQ424161 | |
| Notes | Sample taken downstream from weir sill– Low flow over gravel riffle and silt. |
|
| Also netted in this sample. | One 150 mm Eel |
|
| Species | Group | BMWP Score |
| Ephemeridae | Mayfly | 10 |
| Rhyacophilidae |
Caddis Fly | 7 |
| Gammaridae | Shrimp | 6 |
| Hydropsychidae | Caddis Fly (caseless) | 5 |
| Elminthidae | Water beetle (adult and larvae) | 5 |
| Tipulidae | Cranefly |
5 |
Dendrocoelidae |
Flatworm | 5 |
| Simuliidae | Blackfly larvae | 5 |
| Baetidae | Mayfly | 4 |
| Sphaeriidae | Mussel | 3 |
Hydrobiidae |
Snail | 3 |
| Chironomidae | Midge | 2 |
| Oligochaeta | Worm - Tubifex and Lumbriculus | 1 |
| Total Score | 61 | |
| ASPT (Average Score Per Taxon) | 4.7 | |
April 2007
A similar result to last year, again with quite a wide range of organisms captured, but lacking in pollution sensitive families.| Location | Bevern Stream –Clappers Weir , Barcombe. | |
| Date | 4th April 2007 | |
| Grid Reference | TQ424161 | |
| Notes | Sample taken downstream from weir sill – mixed clay/gravel substrate – moderate flow. |
|
| Also netted in this sample. | Planorbis shell |
|
| Species | Group | BMWP Score |
| Ephemeridae | Mayfly | 10 |
| Calopterygidae | Damselfly | 8 |
| Caenidae | Mayfly | 7 |
| Gammaridae | Shrimp | 6 |
| Ancylidae | Snail | 6 |
| Hydropsychidae | Caddis Fly (caseless) | 5 |
| Elminthidae | Water beetle (adult and larvae) | 5 |
| Dytiscidae | Diving beetle (larva) |
5 |
| Simuliidae | Blackfly larvae | 5 |
| Baetidae | Mayfly | 4 |
| Sphaeriidae | Mussel | 3 |
| Lymnaeidae | Spireshell snail | 3 |
| Chironomidae | Midge larvae (Chironomus) | 2 |
| Oligochaeta | Worm - Tubifex and Lumbriculus | 1 |
| Total Score | 70 | |
| ASPT (Average Score Per Taxon) | 5.0 | |
April 2006
A fairly wide variety of organisms were captured, but lacking in pollution sensitive families, giving low scores on both the BMWP total and the Average Score Per Taxon. This maybe related to recent high levels of ammonia measured at this location.| Location | Bevern Stream –Clappers Weir , Barcombe. | |
| Date | 7th April 2006 | |
| Grid Reference | TQ424161 | |
| Notes | Sample taken downstream from weir sill – mixed clay/gravel substrate – moderate flow. |
|
| Also netted in this sample. | 1 Bullhead Culicidae – mosquito larvae |
|
| Species | Group | BMWP Score |
| Ephemerellidae | Mayfly | 10 |
| Gammaridae | Shrimp | 6 |
| Hydropsychidae | Caddis Fly (caseless) | 5 |
| Elminthidae | Water beetle (adult and larvae) | 5 |
| Dytiscidae | Diving beetle (Platambus maculatus) |
5 |
| Simuliidae | Blackfly larvae | 5 |
| Tipulidae | Cranefly larvae | 5 |
| Baetidae | Mayfly | 4 |
| Glossiphoniidae | Leech | 3 |
| Sphaerium | Mussel | 3 |
| Planorbiidae | Snail | 3 |
| Physidae | Snail | 3 |
| Lymnaeidae | Spireshell snail | 3 |
| Asellidae | Hoglouse | 3 |
| Chironomidae | Midge larvae (Chironomus) | 2 |
| Oligochaeta | Segmented worm (Lumbriculus) | 1 |
| Total Score | 66 | |
| ASPT (Average Score Per Taxon) | 4.1 | |
July 2005
| Location | Bevern Stream –opposite Scobells Farm, Barcombe. | |
| Date | 20th July 2005 | |
| Grid Reference | TQ425163 | |
| Notes | Moderate to slow flow rate. Partly shaded. Gravel substrate | |
| Also netted in this sample. | - | |
| Species | Group | BMWP Score |
| Ephemeridae | Mayfly | 10 |
| Ephemerellidae | Mayfly | 10 |
| Leptoceridae | Caddis Fly | 10 |
| Limnephilidae | Caddis Fly | 7 |
| Gammaridae | Shrimp | 6 |
| Hydropsychidae | Caddis Fly | 5 |
| Elminthidae | Water beetle | 5 |
| Tipulidae | Cranefly | 5 |
| Simuliidae | Blackfly | 5 |
| Baetidae | Mayfly | 4 |
| Glossiphoniidae | Leech | 3 |
| Limnaea | Snail | 3 |
| Physidae | Mussel | 3 |
| Hydracarina | Water mite | 0 |
| Total Score | 76 | |
| ASPT (Average Score Per Taxon) | 5.8 | |
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