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DATA:- TABLES AND GRAPHS 1999

 

WEATHER DATA (FEB to JUNE) TABLE

Graph of min-max and average temperature
Graph of rain level and wind speed

JUVENILE MIGRATION (JUNE to JULY) TABLE

Graph of grand total (froglets, toadlets)
Graph of grand total (different rescue areas)
Graph of grand total (dates and rescue areas)

MAIN MIGRATION (FEB to JUNE) POND AREA MAP SAXON GATE AREA MAP DRAINS
FROG TABLE    TOAD TABLE    NEWT TABLE

Graph of grand total (frogs,toads,newts)
Graph of grand total frogs
Graph of grand total toads
Graph of grand total newts

Graph with temperature overlay
Graph with wind speed overlay
Graph with rainfall overlay

Graph of southern migration (drains & grass)
Graph of southern migration total

SERVICE ROAD JUVENILE MIGRATION  ROUTES
(JUNE to JULY) 
SERVICE ROAD TABLE

Graph of juveniles rescued from drains (dates)
Graph of juveniles rescue numbers for drains
Graph of juveniles rescued from west drains
Graph of juveniles rescued from east drains
Graph of juveniles comparison east/west drains 1
Graph of juveniles comparison east/west drains 2
Graph of juveniles, drain pairs
Graph of juveniles, drain pair comparison
Graph of juvenile migration on service road

Spider Graph Juveniles rescued from west and east drains.The southern migration was seen a few days after the start of the first migrations and shewed a general movement towards the newly planted amenity woodland. The drains on the east side of the road to Dunton contained greater numbers of trapped juveniles as compared with those on the west side.

The initiation of toadlet migration depends upon weather, rain being the major movement inducing influence and is a relatively speedy process. Froglet migration is more long drawn out, with a minimal flow of juveniles during dry weather increasing as damp conditions appear. Movements of froglets and toadlets are not restricted to the hours of darkness. The high concentrations of juveniles in specific drains (8W, 3W, 5E) shew that each migration forms a very narrow route, as can be seen from figure 3.

 

 


AFTERWORD
Mid Beds District Council have submitted proposals for the building of a LOCAL CENTRE in the path of the northerly migration route to the only remaining foraging ground accessible without crossing tarmac. Discussions continue; plans are being drafted for digging a pond on the other side of the new road.

ACKNOWLEDGEMENTS
Our thanks must be given to the many residents of the local housing estate who helped in the collection of froglets and toadlets from their gardens and roads. We are also grateful to the staff of the Saxon Gate swimming pool for helping with collection of froglets and toadlets and for loaning us cones to section off an area of car park and for placing advisory signs within the swimming pool building. Elmes of Woolners Way Stevenage provided the galvanised wire mesh at a 'special rate'. Thanks too to the volunteers and many members of public who helped with the toad lift and to the courteous car drivers. Altogether, this years successful toad lift has been a true community effort.

One can only wait and see if the word spreads amongst the amphibian population; they'll certainly be back again next year if it does, - - - - - - - - - - - - - - - - - - and so shall we.


SGTL & IWG

 

 
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