Dynamika flory segetalnej wschodniej części Pojezierza Gnieźnieńskiego
Streszczenie
The present report describes changes in the species composition of
the segetal flora during 143 years of geobotanical research. The analysis is based
on historical sources of information and the author presents floristic releves were
taken in the field. In the area 2114 km² of segetal habitats, 1795 floristic releves
were taken, which enabled creating a collection of 37 391 floristic data possible.
The work concerns a region that has been intensively colonized since the remotest
time because it is the cradle of our statehood. At present it is an area of increased
farm production. An attempt to define the synanthropodynamic state of the segetal
flora in this area was made. Special attention was paid to directly endangered weeds
(E) and potentially endangered weeds (PE).
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