Water Quality in Slovenia - Agencija RS za okolje

G L O S S A R Y O F T E R M S
Hydromorphological conditions The hydrological regime and morphological conditions
of water. The hydrological regime: the quantity
and dynamics of the water current and linkage to
groundwater bodies. The morphological conditions: the
depth and width of the river, the structure and substrate
of the river bed and the structure of the riverbank zone.
Indicative list of parameters or list of
nationally relevant substances
Hazardous substances for which it has been determined
on a national level that, due to their presence and
widespread use, they present risks to the environment
and man.
Indicative weight Taxon in one or several quality classes, expressed as
number ranging from 1 to 5.
Littoral Shore or coastal zone of a water body where the sunlight
reaches the bottom.
Macrophytes Larger aquatic plants (some algae - Characeae, mosses,
ferns, higher plants).
MBAS Methylene blue active substances, produced by the
reaction of anionic surface-active substances and
methylene blue.
Metolachlor An organic compound, the herbicide used for weed
control in agriculture, at the roadside and in ornamental
plant growing.
Multimicrohabitat sampling method A method of sampling benthic invertebrate fauna,
adapted to the requirements of the Water Framework
Directive.
OECD Organisation for Economic Cooperation and
Development.
Organic pollution Pollution of water with organic substances.
PAHs Polycyclic aromatic hydrocarbons
PCBs Polychlorinated biphenyls; a common term for chlorine
substituted biphenyls; many PCBs are persistent, they
accumulate in the food chain and have long-lasting
damaging effects on organisms.
Periphyton A biotic community of organisms permanently or
occasionally attached to a solid underwater surface.
Phytobenthos Plants living at the bottom of a river bed, lake or sea.
Phytoplankton Plant organisms carried by water or floating in it.
Photosynthesis Synthesis of organic substances from carbon dioxide
and water occurring in green plants in the presence of
sunlight.
Priority list of hazardous substances The list of substances that present a significant risk to
the environment and man, and are classified for priority
action; they are listed in Appendix X of the Water
Framework Directive.
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