Weeds in Australia

About weeds

Glossary

Allelopathic
Influencing the growth and development of surrounding plants by the release of chemical compounds.
Annual
A plant whose life span ends within one year after germination.
Biological control
Controlling a pest by using its natural enemies.
Biological diversity (Biodiversity)
The variety of life forms: the different plants, animals and microorganisms, the genes they contain, and the ecosystems they form. It is usually considered at three levels: genetic diversity, species diversity and ecosystem diversity.
Deciduous
Plants that shed their leaves annually. It can also refer to the process of annual bark shed.
Genus
A group of related species usually clearly separable from other such groups, or a single species without close relatives; the major taxonomic rank between species and family.
Grafting stock
A plant, usually selected for its robustness and rooting vigour, to which another plant is fused via a graft.
Grubbing
A manual method to remove weeds. To dig up by the roots.
Ecosystem
A community of organisms interacting with one another and with the environment in which they live.
Endemic
A species restricted to a specified region or locality.
Habitat
The place or type of site in which an organism naturally occurs.
Herb
A plant with a non-woody stem.
Invasive species
A species occurring as a result of human activities beyond its accepted normal distribution and which threatens valued environmental, agricultural or personal resources by the damage it causes.
Native vegetation
Plants indigenous to a particular area. It includes indigenous vegetation that has been regenerated with human assistance following disturbance. It excludes plantations and vegetation that has been established for commercial purposes.
Natural (or native) range
Natural range can be defined as either the potential or realised range of a species. Potential range is the maximum possible distribution of a species in the environment. Realised range is the actual range of the species. It is usually less than the potential range because of pressure from, and interactions with other organisms, that force the species to occupy a niche that is narrower than the potential range.
Naturalised
An organism freely reproducing in an area outside its natural range.
Perennial
A plant whose life span extends over more than two growing seasons.
Revegetation
The planting of native species in areas that have been cleared or highly modified. The mix of species may not be the same as originally occurring in that patch of vegetation.
Rhizome
Underground stem which usually grows horizontally.
Riparian
On the fringes of and adjacent to water bodies.
Semi-deciduous
Semi-deciduous plants lose their foliage for a very short period, when old leaves fall off and new foliage growth is starting.
Species
A taxon comprising one or more populations of individuals capable of interbreeding to produce fertile offspring.
Stolon
Aboveground creeping stem (sometimes called a runner), producing roots and sometime shoots.
Taxon
A group or category, in a system for classifying plants or animals. For example, an entity at a species level, a genus level, a family level etc may all be called a taxon.
Taxonomy
The science of classifying, describing and characterising different taxa of plants, animals and other organisms.
Terrestrial
Pertaining to or living on land.
Vegetatively
Spread through means such as bulbs and suckers.
Weed
A plant that requires some form of action to reduce its harmful effects on the economy, the environment, human health and amenity.