Pay Attention

Credits to Peter Sripinyo, Kevin Kazules and Paul Kemp

•  Bio 102 Field trip images

•  You will see only a handful of the 1000 or so species

Determinations of community

(biotic and abiotic factors) Physical Stress

Organisms interaction

Intertidal and coastal communities

•  Rocky intertidal •  Sandy beaches •  Mudflats •  Estuaries •  Salt marshes •  Mangroves •  Lagoons

Rocky Intertidal

Sandy beach

Mudflat

Estuary

Salt marsh

Mangroove

Lagoon

Tides determine the diversity

Characteristics •  Physical

–  Submersion/Exposure : desiccation •  Seek shelter in cracks and ledges •  Close up

–  Waves : crush and tear •  Mussel byssal threads, kelp holdfast, muscular foot, flexible flat structures

–  Temperature Extremes: direct sunlight, air exposure –  Climate Change

•  Biological –  Space: bulldozing, rapid growth –  Competition: intra and inter –  Predation –  Mutualism –  Invasive species

•  Chemical –  Salinity changes

•  Evaporation •  rainfall

–  Pollution, Nutrients, Runoffs

70% dry Twice a month

Splash zone

Acorn barnacles

Periwinkle: Littorina

Upper intertidal

Green anemone: Anthopleura

Black turban snail:Tegula

Hermit crab

Balanus barnacle

Sea Lettuce

Coralline algae

Owl limpet (lottia) (AG Collins UCSD)

Sponge weed

Stripe shore crabs: Pachycrapsus

Cling fish

Mid intertidal

Sargassum algae

Rockweed: brown algae Pelvetia

Fucus: brown algae

Sea hare: Aplysia

Brittle star

Goose neck barnacle : Pollicipes

California mussels: Mytilus

Lower intertidal

Surf grass

purple urchin: Strongylocentrotus

Rainbow seastar

Knobby seastar

Ochre seastar : Pisaster

Sea cucumber: Parastichopus

Giant keyhole limpet: Megathura

chiton

Wavy top snail

Spiny lobster: Panulirus

octopus

Wooly sculpin : Clinocottus

Giant Bladder kelp

Feather boa kelp