( Ecol .). (a) a species that invades a bare area such as a newly exposed soil or rock surface. (b) Any new arrival in the early seral development of plant communities, usually with particular reference to certain species whose presence appears to promote the establishment of more exacting (Successor) species; often applied to a species planted to prepare a site for the latter. ( BCFT ). Cf . Succession.
Refers to species that colonize bare substrate.
A plant adapted to rapid colonizat...
A species adapted to be a good invader of a newly exposed soil surface, where it persists until supplanted by successor species. Usually a pioneer plant has small, windblown seeds or other properties that facilitate their distribution.
The first species or community to colonize or recolonize a barren or disturbed area, thereby commencing a new biological succession.
A plant that is one of the first to take over an area. For example, after a fire burns all the trees and wildlife in an area (or after people bulldoze), certain weeds and other plants will"pioneer trees."
A plant adapted to rapid colonization of ground recently vacated by its previous inhabitants. Pioneer plants usually grow very quickly and can often prosper in poor soil. Most of the plants in a vacant lot are going to be pioneer species, as are the plants trying to make a go of it in your gravel driveway or on a logged-off hillside. Dandelions, crabgrass, fireweed and alder trees are good examples from the Pacific Northwest.
The first stage in a succession. A pioneer species is one which establishes early on in the colonisation of a new area.
a plant species that characteristically first colonizes exposed soils.
The first plants to colonise bare land.
Any of those species which are among the first to colonize previously barren areas, such as exposed rock, or recently disturbed areas, such as burns. Also those plants which lead the process which creates bog and fen from open waters. Among the most significant pioneers of the North Country are the Reindeer Lichens ( Cladonia spp.) on rock, and the sedges, especially Carex lasiocarpa, in wetlands.
The elm hybrid U. Ã— hollandica Pioneer is an American development arising from the crossing of two European species, the Wych Elm U. glabra and the Smooth-leaved Elm U. minor subsp. minor. It is very fast growing and distinguished by a dense, globular crown casting a heavy shade. Its resistance to Dutch elm disease is somewhat less than other American hybrids, and it was omitted from the elm trials http://www.for.nau.edu/cms/content/view/512/706/ in eastern Arizona conducted by the Northern Arizona University.