Where the land meets the sea, the coast is. This highly variable region starts where salt spray reaches and affects land-based plant communities and stretches seaward through the surf zone in terms of wave actions still disturbs the sea bottom, typically to depths of about 200 ft. Indeed, the shore environment has the largest diversity of habitats and microhabitats on the world.
Coastal life has to be adapted to environmental factors wave action that grade from one extreme to another, especially from wet to dry; and particle sizes of bottom stuff.
Running parallel to the coastline, each zone represents states at particular elevations above or below. Characteristic groups of organisms inhabit each zone, although the actual type composition varies geographically.
Zonation is apparent on open rocky shores, but a lot more subtle on soft-sediment coasts, where most invertebrates retreat during low tide below the surface.
Sea or supralittoral spray zone: upper part of the coast, which is never submerged
Intertidal or electoral zone: place between extreme high tide and extreme low tide which experiences switching conditions of inundation in the air
Sublittoral, subtidal, or nearshore zone: lower levels of coast that stay submerged at all times but are impacted by wave action.
Vertical zonation of seaweeds (algae) also happens because distinct photosynthetic pigments absorb different wavelengths of the sun. Green seaweeds are confined because the chlorophyll that provides color only to them in shallow waters in the upper eulittoral zone consumes the longest, red wavelengths. In red algae chlorophyll is masked by other pigments that absorb in the orange to green portions of the spectrum. They may occur at just about all depths in the coastal zone and can consume most wavelengths. Eventually, brown algae like kelps have both chlorophyll and fucxanthin, a pigment which absorbs short blue-green wavelengths. Brown algae is often within themed- to lower eulittoral zone and to depths of 30 to 50 feet in the sublittoral zone.
This small strip of land is influenced adversely by individuals in several ways, including over fishing, pollution that is industrial, and agricultural runoff. These practices may subsequently affect us as fish availability varies, algal blooms sometimes occur, and water quality fluctuates through time. Complete, dividing them up into tropical and temperate coastal places can generalize more readily coastal oceans.
For our video, we chose to analyze the temperate Coastal Oceans across the west coast of Sweden, and looked at three animals in this habitat: lobsters, sea pens and jellyfish.
Tropical Coastal Oceans:
|coastal desert biome|
Coastal oceans in tropical regions have characteristics that are similar to their temperate counterparts. Nevertheless, there are particular habitats in the tropics that are not found in the temperate regions of Earth. A great example, with this is the coral reef.
Coral reefs are biologically varied and abundant habitats that appear in relatively nutrient-poor settings along coastlines. Regions that have too many nutrients regularly harbor a lot of algal development to sustain coral growth. To find out more regarding the coral reef we've set up an entire page dedicated entirely to this tropical coastal biome.