Of the three major types of habitats, terrestrial habitat is the most variable. Fresh-Water Habitat 3. But consumers occur in decreasing number from surface to bottom. Marine Habitat 2. Abstract: The spatial proximity of one habitat to another can strongly influence population and community dynamics. The greater habitat complexity in the shallow and medium-depths, that is provided by the greater amounts of R. megacarpa and shell debris in those waters, was associated with a greater species richness, diversity, density and biomass of benthic invertebrates. Salinity decreases during low tide and periods of heavy rain. It is the region of shallow water above the continental shelf. Very few animals live there. Estuarine habitat is a body of water formed at the coast as a result of the action of tides which mix salt water from sea with fresh water from the land. Secondary production may provide a comprehensive metric of food web support because it synthesizes contributions of local primary production, food subsidies from other habitats, and the protective influences of habitat structure. Many cities are centred on estuaries, and urban expansion is often associated with the fragmentation of mangrove forests. Estuaries form a transition zone between river environments and maritime environments known as ecotone. This book first outlines the estuarine environment and the physical and biological factors that are important within it. This region is characterised by warm summer and cold winter. At high tides such habitats experience maximum salinity. Dominant plants of this region are Blue stem and Grama grasses. The role of sea-level change in shaping species richness patterns of marginal marine species has received much attention, but with variable conclusions.
2020 estuarine habitat in biology