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Floristic evaluation of anthropopressure zones in Warsaw With 5 Figures
Author(s) -
SudnikWójcikowska B.,
Moraczewski I. R.
Publication year - 1993
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19931040115
Subject(s) - floristics , flora (microbiology) , geography , ecology , vegetation (pathology) , biology , paleontology , species richness , bacteria , medicine , pathology
In the present work the results of floristic investigations conducted in Warsaw for over a period of 10 years were used. The city area was divided into 225 squares. Each square was assigned to one of the four anthropopressure zones A, B, C, D which were distinguished with respect to the gradually decreasing intensity and duration of man's impact. The work attempts to find the best floristic reflection of the anthropopressure zones. For each square both the floristic lists and the previously defined complex indices of flora synanthropization were analyzed. The use of complex indices instead of entire flora is associated with the inevitable reduction of informations which may be selected intentionally. Seven different ways of classifying the squares according to the anthropopressure intensity: A‐B‐C‐D, A‐B‐(CD), A‐(BC)‐D, (AB)‐C‐D, (AB)‐(CD), A‐(BCD), (ABC)‐D were compared with the floristic classifications. These classifications were compiled using the cluster analysis in which both the entire flora and complex indices were used. Assessing the similarities between classifications it is possible to draw conclusions about the sensitiveness of indices and flora as a whole to change due to man. Floristic value of the borders between the anthropopressure zones A‐(BCD) or between (AB)‐(CD) is the greatest. In general, the indices reflect the anthropopressure zones better than the entire flora.