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ⓘ Ruderal species




Ruderal species
                                     

ⓘ Ruderal species

A ruderal species is a plant species that is first to colonize disturbed lands. The disturbance may be natural – for example, wildfires or avalanches – or a consequence of human activity, such as construction or agriculture.

The word ruderal comes from the Latin rudus, meaning "rubble".

Ruderal species typically dominate the disturbed area for a few years, gradually losing the competition to other native species. However, in extreme disturbance circumstances, such as when the natural topsoil is covered with a foreign substance, a single-species ruderal community may become permanently established. In addition, some ruderal invasive species may have such a competitive advantage over the native species that they, too, may permanently prevent a disturbed area from returning to its original state despite natural topsoil.

                                     

1. Features

Features contributing to a species success as ruderal are:

  • Polyploidy
  • Massive seed production
  • Fast-growing roots
  • Seedlings whose nutritional requirements are modest
  • Independence of mycorrhizae
                                     

2. Quantification

Ecologists have proposed various scales for quantifying ruderality, which can be defined as the "ability to thrive where there is disturbance through partial or total destruction of plant biomass". The ruderality scale of Grime presents values that are readily available, and it takes into account disturbance factors as well as other indicators such as the annual or perennial character of the plants.

                                     
  • few species are found in Australia and still fewer in Africa. The plants of this genus are mostly relatively small weeds. Some of them are ruderal species
  • London Borough of Lewisham. It is a mixture of rough grassland, scrub and ruderal plants. It is named after local environmental campaigner Sue Godfrey, in
  • extreme pH levels. Ruderals are plant species that prosper in situations of high intensity disturbance and low intensity stress. These species are fast - growing
  • America, including Peru, and is known elsewhere as an introduced and ruderal species sometimes as a weed in tropical, subtropical and, to a lesser extent
  • slopes and coastal cliffs. It grows on various soil types and is a ruderal species colonising fallow land and over - grazed pastures. S. imbricata is a
  • it is quite common in roadsides and ruderal habitats, even in urban areas. It is considered an invasive species in Australia. The false yellowhead is
  • Ruderal species A plant associated with human dwellings, construction, or agriculture, that usually colonizes disturbed or waste ground. Ruderals are
  • Ophonus puncticeps is a species of ruderal ground beetle native to the Palearctic including Europe and the Near East. The species is black coloured with
  • and Central Asia. These mirids inhabit high - altitude herbaceous habitat, ruderal areas and even salt spots. In the Alps they can be found up to over 2000
  • Euphorbia arenaria and ragwort Senecio vulgaris - such plants are termed ruderals Other very specialised plants are adapted to the accretion of sand, surviving
  • The moths are found mainly on the edge or in localities. They prefer dry ruderal areas, brownfields, roadsides, embankments, gardens and parks. In the Alps

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