A303 Bridge – 2016
These results are taken from kick sampling conducted beneath the bridge where the A303 Wincanton Bypass crosses the river Cale; UK grid reference ST71100 27786.
Date | August 2016 | October 2016 | ||||||
Target Groups | Number | Category | Number | Category | Number | Category | Number | Category |
Cased caddis | b | b | ||||||
Caseless caddis | ||||||||
Mayflies | ||||||||
Blue-winged olives | a | |||||||
Flat-bodies | a | |||||||
Olives | ||||||||
Stoneflies | ||||||||
Freshwater shrimp | c | c | ||||||
Site score | 7 | 5 | ||||||
Notes | ||||||||
Invasive Species | ||||||||
American signal crayfish | NO | NO | NO | NO | ||||
Himalayan balsam | YES | YES | NO | NO | ||||
Japanese knotweed | NO | NO | NO | NO | ||||
Giant hogweed | NO | NO | NO | NO | ||||
Floating pennywort | NO | NO | NO | NO | ||||
American skunk cabbage | NO | NO | NO | NO | ||||
Other species noted | Damselfly, bullhead, leech | |||||||
River depth close | cm | cm | cm | cm | ||||
River depth middle | cm | cm | cm | cm | ||||
River depth far | cm | cm | cm | cm |