Hard Substrate Communities. Hard substrate = rocks, old shells, pilings, jetties, piers, docks Intertidal – perhaps best know marine community. Tides = periodic rise and fall of sea level.
Hard substrate = rocks, old shells, pilings, jetties, piers, docks
Intertidal – perhaps best know marine community
Mytilus californianus Sun and Moon.
Nucella (Thais) Sun and Moon.
Limpets Sun and Moon.
Starfish - Sun and Moon. Pisaster
Sea Anemones Sun and Moon.
Tunicates Sun and Moon.
Bryozoans Sun and Moon.
Sea Urchins Sun and Moon.
Algae Sun and Moon.
3. Avoid destruction in waves
4. Salinity stress
Coast of Scotland:
Thais lapillus (now Nucella)
Space is key – processes involved in getting, keeping, and using space
-- shorter period of inundation means reduced probability of settlement in upper reaches
-- larvae chose where they settle
-- adult larval interactions affect settlement patterns
4.In benign physical environments, predation is most important in determining community composition