Ecology Pre-lab quiz on lab 3 (bodega bay)

top predators in the necritic zone?

sharks, orcas

depth of sandy beach vs. necritic zone? temperature? concentrations?

-sandy beach is shallower

-warmer in summer, colder in winter

-more O2 and nitrogen in water bc mixing w/ air

top predators on sandy beaches?

gulls, falcons

How does depth differ between Rocky Intertidal Zone vs. Neritic zone ? temperature? salinity? O2 concentrations?

-intertidal zone more shallow

-warmer in summer, colder in winter

-higher salinity on hot, lower salinity on cold day

-more O2 during day and more CO2 at night

species in the rocky intertidal zone?

sea lettuce, rockweed, sea palm, kelp, red algae, surfgrass, barnacles

top predators in the rocky intertidal zone?

gulls

What species first colonized sand dunes?

grasses

top predators in sand dunes?

coyote & bobcat

-they eat the deer in there (mice in there too)

consumers in the Salt Marsh?

deer, herons, egretes

top predators in the salt marsh

egretes & herons

what is an estuary ?

where saltwater meets freshwater

How does depth, temperature, and salinity differ between estuary & neritic zone?

-shallower

-slightly warmer in summer & colder in winter

-less salinity bc of freshwater

-more o2 in day and CO2 at night

What are some producers in the estuary?

eelgrass & phytoplankton

consumers in the estuary?

harbor seals, loons, cormorants

top predators in the estuary ?

seals & sea lions

Which costal ecosystem has greatest diversity of species?

rocky intertidal tide bc more complex structures

which coastal ecosystem has least diversity of species per unit of area?

sandy beach bc less nutrients and simpler habitat

why is the water at Bodega Bay not clear blue?

too much nutrients in the water & its too cold

what is a producer in the salt marshes?

pacific glasswort or pickleweed