Range extension of the 'Witham orb mussel' Sphaerium solidum (Normand) (Bivalvia: Sphaeriidae) or an overlooked resident of the Great Ouse?

Submitted by admin on Sun, 20/11/2011 18:54
JON BASS
JOHN BLACKBURN
CAROLINE GIRAUDY
(2003)
Volume
38
Part
1
Page from
61

Sphaerium solidum (Normand) is reported from the River Great Ouse, Cambridgeshire, adjacent to a RAMSAR site of high conservation interest. The previously known UK populations are confined to a single river system (River Witham, Lincolnshire). We speculate on the source of the newly discovered population.

Keywords
Benthic sampling
Sphaerium solidum
RDB status.