Community Interactions

Community Interactions

BioH – Chapter 40

1

Basic Ecology Terminology

• Habitat

• Community

• Niche

• Community

Interactions2

The physical, chemical and biotic features of where an organism is typically found

All species within a habitat that interact with each other – influenced by: Abiotic conditions Resource availability Adaptive traits of organisms Species to species interaction Population size

The sum of all activities & relationships an organism engages in as it interact in the community.(The “role” that an organism plays)

Relationships between communities within habitat Symbiotic - “living together” Harmful relationships

Community Interactions

Complete the Community Interactions Video Questionnaire! 3

http://www.youtube.com/watch?v=D1aRSeT-mQE

Community InteractionsDescription Organism A Organism B Example

Predation +

Mutualism +

Commensalism +

Parasitism +

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Most relationships are NEUTRAL (no effect on either species)

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6

7

8

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Community Interaction Mechanisms

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Defense Mechanisms• Camouflage• Warning coloration• Mimicry• Moment-of-truth defenses

Ecological Succession

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Primary succession = succession where no soil existsPioneer species = the first living organisms to populate an areaSecondary succession = succession to existing ecosystem after natural disaster

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=LlbgEkZsP9S2_M&tbnid=gLHWXKqbiHt1DM:&ved=0CAUQjRw&url=http%3A%2F%2Fbot1320.nicerweb.com%2FLocked%2Fmedia%2Fch10%2Fsuccession.html&ei=YvBVUdapPMasigKar4DwDg&bvm=bv.44442042,d.cGE&psig=AFQjCNEQj-FsaV9id5a6VXaGDU0ujqqTJA&ust=1364672980864660

Mt. St. Helens

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Before eruption – May 17, 1980 After eruption –

May 18, 1980

Today

http://www.youtube.com/watch?v=-H_HZVY1tT4

Other succession examples

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Tuolumne Meadows - Yosemite

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=Ua6pAcRmaaJUaM&tbnid=B4Y8NpD8wF9qEM:&ved=0CAUQjRw&url=http%3A%2F%2Fopenlandscapes.zalf.de%2Fopenlandscapeswiki_glossaries%2FFeatures%2520of%2520Ecosystem%2520Structures.aspx&ei=JPVVUeHIBYrBigLgxoCoDw&bvm=bv.44442042,d.cGE&psig=AFQjCNEnRccMju-wzlTvfXXS_pqLhmmomw&ust=1364674193930979

Climax Communities

Land BiomesComplete the Climax Communities Video Worksheet 15

http://www.youtube.com/watch?v=iZA5yfrzLV8&list=PL8F2AF6D5E617BA4B&index=5&feature=plpp_video

Climate Diagrams

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http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=uLL_1zQgZOgWrM&tbnid=H9iUsC2ruSse6M:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.digitalpencil.org%2FProjects_AllGrades%2FAroundtheWorld%2FBiomes%2FBiomes.aspx&ei=ZvZVUfKqBYKhigKWxYHgDA&bvm=bv.44442042,d.cGE&psig=AFQjCNHDUAKSR6LKwfKb4vM5_0-E-B4MAA&ust=1364674476669867

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=uLL_1zQgZOgWrM&tbnid=H9iUsC2ruSse6M:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.sln.org.uk%2Fgeography%2FLivingdesert.htm&ei=evZVUYTKIerliAKFuYHYBA&bvm=bv.44442042,d.cGE&psig=AFQjCNHDUAKSR6LKwfKb4vM5_0-E-B4MAA&ust=1364674476669867

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World-wide land biome climate maps

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=o4yW8ieDyCrb1M&tbnid=vtTxBaeScQaYRM:&ved=0CAUQjRw&url=http%3A%2F%2Fmorriscourse.com%2Felements_of_ecology%2Fchapter_23.htm&ei=G_hVUcmXKuSviAL8pYBo&bvm=bv.44442042,d.cGE&psig=AFQjCNHDUAKSR6LKwfKb4vM5_0-E-B4MAA&ust=1364674476669867

Other Biomes

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Mountain rangesPolar ice caps

Aquatic Biomes Freshwater Ecosystems

Flowing water Standing water Freshwater wetland Estuary

Marine ecosystems Photic Aphotic Intertidal Coastal Open ocean

(Greenland)

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=0Us7BkpSEMKx3M&tbnid=fhw5E9e3mLYJDM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.physicalgeography.net%2Ffundamentals%2F7v.html&ei=7PdVUeOWKo3riQLboIBw&bvm=bv.44442042,d.cGE&psig=AFQjCNHeDZwkOW9G-keyN2cuxAgc0GcHdA&ust=1364674919138005

Primary Productivity

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A measure of energy produced per area

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=wXZIgiKKK-WBmM&tbnid=sDvDZoz0s9xNdM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.globalchange.umich.edu%2Fglobalchange1%2Fcurrent%2Flectures%2Fkling%2Fenergyflow%2Fenergyflow.html&ei=-_pVUdrLGYmIiwLyuYCIDQ&bvm=bv.44442042,d.cGE&psig=AFQjCNEBJJK5gbGKpv9AqcOLFsFAKqCCmg&ust=1364675657322856

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Community Interactions

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