ecology of a rocky shore community. zones of life along a rocky shore why are some animals and...
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Ecology of a Rocky Shore Community
Zones of Life along a Rocky ShoreWhy are some animals and plants located in special zones and not all over?
Adaptations for life on a high energy rocky shorelineHigh energy wavesLow tide exposure
Animals on a typical New England rocky shore
Asian Shore Crab
Purple Sea Urchin
Common Sea Star
Algae on a typical New England rocky shoreFucusKnotted WrackUlvaChondrusKelp
Adaptations to life on a rocky shore lineAdapting to Wave ShockBarnaclesCements shell to rockSnailsUse a suction cup like foot
Adaptations to Wave ShockSea Stars and UrchinsTube feet with suction cup ends
Adaptations to Wave ShockBlue MusselsByssel Threads ( strong cables)
Adaptations to Wave ShockCrabs and LobstersWedge into rock spacesHide under rocks
Adaptations to Wave ShockSea Weeds (macroalgae) Hold fasts attach to rocks
Rocky shore animal feeding adaptationsBarnaclesFilter food with feathery legs (filter feeder)SnailsScrape food with a radula - tongue with teeth (grazers and carnivores)Sea stars Use tube feet and stomach
Barnacles are hermaphroditesEach barnacle has both male and female reproductive organsMarine snails mate and deposit egg casesSea stars and Urchins broad cast eggs and sperm into the waterMarine Arthropods like crabs and lobsters mate. Female attracts male using pheromones.After the female molts and mates with the male, eggs will later be deposited on underside of her abdomen and carried until they hatch.
Lobster with eggsGreen crab with eggs
EcologyEcology the study of the relationships between living organisms and with their environment.The marine environment for all marine life is composed of the nonliving environment, or abiotic factorsand the living organisms, or biotic factors
What are the abiotic factors that these tide pool organisms deal with every day?How about organisms in this deep sea vent community?
What are the abiotic factors here?
The biotic factors are the organisms and how they interact with each other.Not a good day for the Sea Lion
Biotic factors in the marine environment
Levels of OrganizationThere are four distinct levels of organization in the biotic sector of the environment:The individual organismThe population of that speciesThe community of organisms that species exists withinThe ecosystem the community exists in along with the abiotic factors affecting those organisms
The individual organism (species)Littorina littorea the Periwinkle SnailHow is this animal adapted to its environment?
The population of Periwinkle SnailsHow do these snails interact with each other?Competition?For what?
The community of orgnanisms that the Periwinkle snails live inHow do these organism interact with each other?
A Rocky Shoreline Ecosystem
The Flow of Energy and the Recycling of NutrientsAll the living organisms in this rocky shoreline community require energy for survival.How is this energy acquired and how much is passed on?How do these organism obtain atoms and molecules for growth and repair? and how are these nutrients passed on?