Sorry about that. The charts seem to have lost thier original format.
I'll try again:

To those who might be interested:

Taking into consideration the ecological niche preferred by a species and the snail's
relationship to man, I have made an attempt to reconstruct a habitat based on the land
snails
yielded during and archeological excavation in Central Italy. The species mentioned
below come
from what has been presumably a garden area which covers ca 24 sq. meters.


RNI Species             Niche                   Man                     Soil            Pest
---------------------------------------------------------------------------
46  H. obvoluta         ??                      anthropophobic                  ??
30  P. elegans          shade/moisture                          broken/CC       ??
22  C. nemoralis                indiferent                                                      Yes
 6  R. decollata                indiferent              syanthropic     Ni              No
 5  H. aspersa          indiferent              syanthropic                     Yes
 4  R. pura             shade/moisture  antrhopophobic                  Yes


My question is if one can se that this particular garden area can be considered to be
shaded, humid and more-or-less an area of a low human activity. In comparison to this
another area...


RNI Species             Niche                   Man                     Soil            Pest
---------------------------------------------------------------------------
78  R. decollata                indiferent              syanthropic     Ni              No
58  C. nemoralis                indiferent                                                      Yes
46  P. elegans          shade/moisture                          broken/CC       ??
23  H. obvoluta         ??                      anthropophobic                  ??
 7  R. pura             shade/moisture  antrhopophobic                  Yes
 4  H. aspersa          indiferent              syanthropic                     Yes




...that covers ca 32 sq. meters.  This area seems to have more human activity and to be
less
shaded and to have a more nitrified soil.

Key: RNI= relative number of individuals, CC= calcium carbonate, Ni= nitrate.


Any ideas, suggestions, comments on this?
Thanks in advance

Best Regards

Ezequiel Pinto-Guillaume, Stockholm

---------------------------------------------------------
Ezequiel M. Pinto-Guillaume, M.A.
Tingsvägen 23, 3tr
145 56 Norsborg, Kingdom of Sweden, European Union

Tel. (+468) 53174138
Fax. (+468) 6490194
e-mail: [log in to unmask]
---------------------------------------------------------