The “ecoregional approach”, already consolidated in the Landscape Ecology and
recently improved by WWF International for establishing the conservation policies
(Bulgarini et alii 2004), could be a solution. In this case, at different levels of scientific
knowledge, the landscape system, subsystem or units could become the standard for
developing the ecological, biological and urban researches.
On the other hand we can find a further difficulties on methods and criteria to produce
the data and, consequently, on the necessary time: the eco-biogeographical analysis
needs of long time, many operators, large financial needs and have seasonal problems.
If we make the comparison of this last analysis with the urban settlement analysis
(generally ex-situ, with standard map layers and homogeneous instruments) will have
two speed for producing the information and an inevitable negative effect on the
comparison and relation procedures.
Realize the correlation models will be not easy until are not solved problems and
knowledge gaps on the elements that needs of direct data production in way not
deducible from different fonts.
We can say that certainly, to start from a present ecosystem balance condition, the
modification due to the urban transformation to create undoubtedly the variations on the
species richness-isolation characteristics, and these variations will be re-measurable in
the next time.
Coherent data give the possibility to find and apply relation diagrams among different
phenomena and, consequently, to arrive at the control models by means statistical
functions.