"It's forcingharddecisions," saidSimonStuart, co-author of the paper, who chairs the species survival commission at the International Union for Conservation of Nature.
The Manx crew of Nick Crowe and Darren Hope won Monday's Sidecar A race by 47 seconds from Steve Norbury and Scott Parnell, with Simon Neary and Stuart Bond third.
The early loss of Simon Katich to Stuart Broad just before tea only served to emphasise the scale of England's about-turn in fortunes since the start of the final session on day three.
Surrey have also retained eight players on new two-year contracts - batsmen Walters, Matthew Spriegel, Arun Harinath and Michael Brown, bowlers Stuart Meaker, Simon King and Tim Linley, and wicketkeeper Gary Wilson.