Warm-up: October 6, 2010 A new organism is discovered in the rocky intertidal zone. Which of the following characteristics helps the organism to survive in this particular ocean zone? It has a hard shell and can cling to surfaces It gets energy from chemicals in thermal vents. It has a shiny body and glows. It serves as food source for land animals.

Activator: Think of a word or phrase that describes “relationship” for each letter of the word. Write this in your notebook. You will refer back to it at the end of the week. Now share your response with your elbow partner R E L A T I O N S H P

Relationships in Ecosystems

Ecosystem All the living and nonliving things that interact in an area.

Populations All of the same species in an ecosystem www.intrasystems.gr www.nkf-mt.org.uk

Competition All living things compete for Food Space Competition limits population growth www.opim.wharton.upenn.edu

Limiting Factors Anything that restricts or controls the number of individuals in a population www.bahamascommerce.com

Carrying Capacity The largest number of individuals of one species an ecosystem can support www.wwt.org.uk

Symbiosis Any close relationship between species en.wikipedia.org

Commensalism A relationship in which one species benefits and the other is neither helped nor harmed Shark & remora Barnacles on whale www.community.webshots.com www.cbu.edu

Mutualism A relationship in which both species benefit Pollination www.biology.clc.uc.edu Cleaner fish Lichens: algae + fungus www.orn.mpg.de www4.tpgi.com.au

Parasitism A relationship in which one organisms benefits and the other is harmed Mistletoe Tick www.wcosf.org www.oznet.ksu.edu

Predator - Prey Predators are consumers that capture and eat other consumers, called prey http://www.uga.edu

Decomposer/Scavenger Decomposers and scavengers break down dead plants and animals. Scavengers are animals that find dead animals or plants and eat them. Once a scavenger is done, the decomposers take over, and finish the job. Many kinds of decomposers are microscopic, meaning that they can't be seen without a microscope.

Decomposer/Scavenger

Cooperation Organisms working together toward a common end or purpose http://special.newsroom.msu.edu http://forger.ca/

Additional Terms: Abiotic Biotic Niche Community

Closing: Gimmie Five Students will draw their hand on the back of the sheet of paper they used for their activator, and they will list 5 facts they learned in class today.