Mpumalanga Biodiversity Conservation Plan Handbook - bgis-sanbi

ments, which, in turn, have been
divided into tertiary catchments.
Finally, all tertiary catchments have
been divided into quaternary catchments.
A total of 1 946 quaternary
catchments have been identified for
South Africa. These quaternary
catchments are the finest unit used
by DWAF in its ecological studies.
REFUGIA
Localities or habitat patches that
become isolated by natural or
man-induced processes and provide,
(usually temporary), refuges for one
or more threatened species.
STEWARDSHIP
A formalised programme of land care,
usually between a State agency for
conserving biodiversity and/or the
environment, and private landowners.
The programme usually involves
mutual incentives to achieve conservation
of natural resources, often
including economic benefits derived
from the use of natural habitats for
their material resources and for
tourism.
SUBCATCHMENT
A subdivision of a quaternary catchment
based on GIS modelling
procedures, using runoff and digital
elevation models to derive these as
planning units for aquatic assessment.
It is at a finer scale than, and nested
within quaternary catchments.
SUSTAINABLE DEVELOPMENT
Integration of social, economic and
environmental factors into planning,
decision making and implementation,
to ensure that development is
balanced to serve the needs of
present and future generations.
THREATENED
(biodiversity features)
Threatened biodiversity features are
those considered to be ‘critically
endangered’, ‘endangered’ or
‘vulnerable’ in terms of standard
IUCN definitions of conservation
status. Such species, ecosystems or
ecological processes are referred to
collectively and individually as
‘threatened’.
GLOSSARY
Axvii
GLOSSARY