Plant Formation

Plant Formation

 

a group of plant associations whose main strata consist of the same species (for example, all associations in which meadow foxtail or Scotch pine is dominant). A plant formation can include genetically and ecologically different associations. For example, a formation of Scotch pine forests can embrace sphagnum pine groves and pine groves with plants typical of broad-leaved forests. Hence, some modern geobotanists use the term “plant formation” without any connotation of rank or taxonomic unit. The term was introduced by the German plant geographer A. Grisebach in 1838 and was used for a long time thereafter in a sense close to plant association or phytocoenosis. Plant associations are usually combined into classes.

References in periodicals archive ?
The contract is for the production of Rgfor (hereinafter referred Rgfor Step1) at reduced to five types of plant formation nomenclature, from an image segmentation provided by IGN.
Despite the large diversity in the formation of buds by species, there is certain regularity in nature of cereal regrowth, which manifests itself primarily in the partial contribution of various groups in buds to the process of plant formation.
They play a major role in plant formation of tall-growing herbage cereals, not forming short shoots (Bromopsis inermis, Calamagrostis epigeios etc.
Moreover, as no genera with amphitropical distributions are implicated in these affinities, this huge semi-deciduous plant formation would have had stronger floristic connections than previously thought, sharing many other genera and even some species.
The arid and dry plant formations of South America and their floristic connections: new data, new interpretation?
The heat and light of the sun easily penetrate this type of plant formation and permit the growth of a dense herbaceous layer consisting of annual and perennial species.
However, the more intense fires occurring later may eliminate much of the tree layer and may even turn it into a very open plant formation, known locally as chipya.
Therefore, a rate of 40% plant formation was adopted as the boundary point for distinguishing dominant and recessive gene expression in both the [F.
Genetic analysis of the plant formation rate from seed-derived calli in [F.
They may contain more than a single plant formation (dominant vegetation of similar structure) and hence more than one biome (animals plus plants determined by vegetation structure), so it is important to utilize these smaller landscape units when discussing transitional biogeography.
His work is characterised by the recurrence of themes and ideas constantly associated with related visual motifs and symbols: the female form, the arabesque, rock and plant formations, seed-pod and flower, sun and moon.