Tides affect coastal ecosystems in various ways, including ¹ ² ³:
- Ecosystem Exposure: The periodic change in water level exposes different parts of the foreshore to wave energy throughout the day. This is very important biologically because the ecology of tidal flats depends on their being alternately flooded and exposed.
- Erosion and Deposition: Tidal currents can erode and transport sediment, which can lead to changes in the shape of the coastline.
- Transport and Sedimentation: The rotation of the tidal wave causes ebb and flood currents to follow different paths, resulting in the transport of water and sediment.
- Life Cycle of Marine Species: The exchange of seawater in and out of tidal bays is essential to the life cycle of many marine species.
- Intertidal Zone: The land in the tidal range is called the intertidal zone and is often marked by tide pools, which are home to a rich biodiversity.
