intertidal zone

The type of communities that occur in the intertidal zone are profoundly influenced by the type of ____________________

substrate

Tides were first mathematically described by ____________________________

sir isaac newton

Our tides are dominated by which celestial body? __________________

moon

A tidal pattern with one high tide and one low tide every 24 hours is called a _______________ tide.

diurnal

A tidal pattern with two high tides of similar amplitude and two low tides of similar amplitude every 24 h is termed a ___________________ tide

semidiurnal

A tidal pattern with two unequal high tides and two unequal low tides every 24 h is termed a _______________ tide.

mixed or mixed semidiurnal

On a rocky intertidal coast, stresses and exposure would be greatest for organisms living in the _____________ zone.

upper

Stresses imposed by low tide in the rocky intertidal include __________________, ___________________, _________________, ________________, ________________.

water loss, temperature, salinity, inability to feed, inability to respire

Non-mobile organisms exposed to low tide must _______________ the stress

tolerate

Mobile organisms can potentially move and therefore ______________ the stress of low tide.

avoid

Depressions, cracks, and aggregations of animals can provide a more favorable ________________ to marine organisms.

microclimate

On the rocky intertidal, most organisms are _______________ feeders

filter

The most limiting factor on rocky intertidal coasts is usually _______________.

space

Vertical zonation is usually due to a combination of _________________ and _________________ factors.

behavioral, physical

________________ are an important keystone predator in the rocky intertidal

seastars

The greatest biodiversity is found at a ____________________ level of disturbance.

moderate or intermediate

___________________ factors are generally limiting in the upper rocky intertidal while _______________ factors are generally limiting in the lower rocky intertidal

physical, biological

In soft bottom intertidal communities, the presence of coarse sediments would indicate that the currents above them are ________________

strong

Fine sediments are typically rich in _______________________

organic matter

Animals that disturb the sediments are termed ___________________.

bioturbators

In soft sediments with fine particles, _______________ feeding is common

deposit