The object of this book is the first detailed description of the
diatom flora of the freshwater section of the St. Lawrence River.
The St. Lawrence River is the outflow of the Laurentian Great Lakes
complex, which is the largest freshwater reservoir of the world. The
river is employed in many ways: as a drinking- and industrial water
and has recreational and transportation usage as well. In consequence
of these it has suffered many and not even positive changes in respect
of the water quality.
An autecological database was developed for the freshwater section of
the river and this book contains the diatom species from that
Sampling processes were performed on many points alongside the
river. Living material was gained from plankton and periphyton of
rocks, Cladophora-filaments and different macrophytes. Fossil material
was gathered from the river bottom, too.
All in all, it is a very exhaustive examination of the freshwater
diatom flora of the St. Lawrence River and offers possibilities to
interesting comparisons, for example to compare the substrate
preference of different taxa and the similarities and dissimilarities
in the living and fossil diatom flora.
We have to remark, that not all taxa, but only the more common ones
are included in this book, namely 227 taxa from 35 genera. A full
dataset is available elsewhere. One can find light-micrographs from
all diatom species, in 30 plates and also notes on the autecology of
Three figures make it easier to skim through the sampling points and
there are also two tables and a very accurate list of species, which
help the orientation among the data.
Summarising, this beautifully prepared edition of high level is an
exact and well-arranged one, which can be an enormous help for
diatomists, phycologists dealing with the St. Lawrence River, or the
diatom flora of large rivers, but also useful for the others, while
enlarges the general knowledge on the spread and autecology of
Acta Botanica Hungarica 43 (1-2) 2001, p. 224-225