Bibliographic Detail
Bukhtiyarova, L.N., 2013
Reference:
Bukhtiyarova, L.N. (2013). [Morphological features of Bacillariophyta new to the Ukraine from hydrotopes of right-bank forest-steepe. II. Species of Gomphonema Ehrenb.]. Modern Phytomorphology 3: 231-240. [in Ukrainian]
Abstract:
Two species Gomphonema laticollum Reichardt and Gomphonema bukycanyona sp. nov. are recorded for the fi rst
time from the hydrotopes of Ukraine. Th eir morphology using CM and SEM microphotos and geographic distribution
are described. New terminology is suggested for the poles of the heteropolar frustule. Depending on the pole contour
valve head and foot or head pole and foot pole are used to date. However, many species of Gomphonema Ehrenb. do not have
a wide round pole that resembles a head, instead they may have the same contour on both poles. According of every pole
functions an att aching valve pole is a pole with pore fi elds or other structures that att ach individual to substratum. A fr ee
valve pole is relatively freely located in a space pole. Th e function of free pole consists in expansion of individual contact
space a part of the environment where an individual may interact directly with its physical body and its biospace. Within an individual contact space physical, maximum energy and informative interaction, high interchange
of substances are accomplished between individual and environment. Th is ecosystem parameter is a part of individual
biosphere and impacts directly on the formation of a species econiche. Proposed terms concern functional morphology of the genera with heteropolar frustule as Gomphonema, Didymosphenia M. Schmidt, Meridion Agardh, Licmophora Agardh
and other. Species typification of Bacillariophyta is discussed.
