Monday, 21 April 2014

River Sampling - 19 April 2014

Saturday 19 April 2014, 1600—1700, sunny but cool
River Granta at Abington, Grid Ref: TL534490
River level = medium, strong flow
Recorder: Anne Dunbar-Nobes
Cased caddis = 0
Caseless caddis = 3 -- Category A
Mayfly ephemeridae = 1 – Category A
Blue-winged olive mayfly = 0
Flat-bodied mayfly = 0
Olive mayfly (Baetidae) = c. 70 – Category B
Stoneflies = 0
Freshwater shrimps (Gammarus) = 8 (widely varying in size from a few millimetres to 1 cm) -- Category A
No other species found in the sample apart from lots of miniscule hairworms.

Jennifer took these photos:
Caseless Caddis larvae

Caseless Caddis larvae

Freshwater shrimps (Gammarus)

Mayfly (ephemeridae) 

Small specimens of Olive mayflies (Baetidae) 

No comments:

The Aims of Abington Naturewatch

At their meeting on 9 April 2005 the members approved this revised version of the aims of Abington Naturewatch:

  • To monitor and record the wildlife (fauna & flora) within the borders of the Abingtons;
  • To encourage protection of our wildlife, maintain its quality and foster its diversity;
  • To promote awareness of the richness, potential and problems of the natural environment of the Abingtons;
  • To cooperate in improving access to the local natural environment for the benefit of all Abington villagers.

Pat Daunt, Founder

The organisation is informal and communication is by email if possible; members are notified of events from time to time. Contact details are maintained by a small "project team". There is currently no membership fee as costs are covered by voluntary contributions at events.

Members are encouraged to report notable sightings of flora and fauna within the Abingtons to the appropriate sector coordinator and an illustrated record is published annually.

A map of the area covered, with some features noted, is available here: http://maps.google.co.uk/maps/ms?ie=UTF8&hl=en&msa=0&msid=213774935674882866424.00000111dca2be9f06ab8&z=13>

For more information or to join, please contact David Farrant on (01223) 892871 or Peter Brunning via e-mail peter.brunning@cantab.net.