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an ecotone is the area where two communities interact. Ecotones can be easily identified by distinct change in soil gradient and soil composition between two communities. [11] ecotone transitions are more clear-cut (distinct), conditions are less stable, hence they have a low species richness. [10]
Ecotones, transition zones, are as important for ecosystems as membranes for cells; Coupling between ecosystems should be utilized wherever possible; The components of an ecosystem are interconnected, interrelated, and form a network; consider direct as well as indirect efforts of ecosystem development; An ecosystem has a history of development;
The South Amazon Ecotones Ecological Corridor (Portuguese: Corredor Ecológico dos Ecótonos Sul-Amazônicos) is a proposed ecological corridor connecting conservation units and indigenous territories that form an ecotone, or transition between the south of the Amazon rainforest and the north of the cerrado of Brazil.
Inherent – Natural features stabilize the border location. Induced – Transient natural disturbances (e.g., fire or flood) or human related activities, subject borders to successional changes over time.
These communities are described as working like one unit, meaning that every species plays an important part in the overall well-being of the ecosystem in which the community resides; much like the organelles within a cell, or even the cells making up one organism. Holistic communities have diffused boundaries and an independent species range.
The borders of the biome hold ecotones where it blends into other biomes such as the cerrado. [7] Within and across the ecosystems of the biome there is huge biological diversity. One source says there are an estimated 60,000 plant species, of which 30,000 are endemic. [3] Another says there are 30,000 to 50,000 plant species. [16]
A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature. A map of the bioregions of Canada and the US. An ecoregion (ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm.
A plant community is a collection or association [1] [page needed] of plant species within a designated geographical unit, which forms a relatively uniform patch, distinguishable from neighboring patches of different vegetation types.