Biomes are the composite of all species within a large scale ecological community. In the natural environment, these assemblies have typically co-evolved, so that they have a natural arrangement in terms of their positioning to compete for sunlight, water and nutrient resources; in some cases these associations are symbiotic, but in most cases they are simply optimal spatial arrangements to take advantage of all the resources available in a given habitat. For example, there is typically a vertical tiering, where plants of differing light requirements can occupy canopy, mid-level or forest floor niches; the same theory applies even in a grassland, where the canopy is simply the tallest of the grasses or herbs.
In the case of water competition, depth of rooting and tolerance to arid soils are chief determinants for spatial arrangement; as far as nutrient competition, plants will compete to determine the most robust competitor for a given edaphic niche. While the outcome geometry for the plant palette usually appears random, there is a complex network of ecological theory at work that determines the layout of the assembled community. The same concept applies to aquatic communities as to terrestrial systems, with some plants having immersed roots and others, either macrophytes or phytoplankton, floating or immersed at varying levels suitable for their sunlight needs.
The Kalahari xeric savanna is an ecoregion in southern Africa characterized by a harsh climate, where temperatures may increase by 45°C from night to day, and rainfall is...
Ecoregions of PanamaLast Updated on 2013-05-20 at 02:30
The Ecoregions of Panama are shaped by the jagged elongated geometry of the country, its varied terrain within Mesoamerica and its tropical climate. This key land bridge... More »
Dead SeaLast Updated on 2013-05-13 at 23:29
The Dead Sea is a hypersaline lake that forms part of the border between Jordan from Israel, and that has no outlet and only one principal source, the Jordan River.
This is... More »
Singapore Strait Last Updated on 2013-05-13 at 23:11
The Singapore Strait is an oceanic water body between Singapore and Indonesia, connecting the South China Sea with the Strait of Malacca.
This maritime waterway is an... More »
Wadden SeaLast Updated on 2013-05-13 at 22:39
The Wadden Sea is an intertidal zone of the North Sea situated between the coast of northwestern continental Europe and the range of Frisian Islands.
The Wadden Sea... More »
North SeaLast Updated on 2013-05-13 at 22:37
The North Sea is a shallow saline water body that is part of the northeast Atlantic Ocean. It is generally bounded by England and Scotland on the west, and by Norway, Germany,... More »
Thracian SeaLast Updated on 2013-05-13 at 22:28
The Thracian Sea is the northern part of the Aegean Sea, itself the northeastern part of the Mediterranean Sea.
The greatest marine biodiversity within the Mediterranean... More »