4-2 what shapes an ecosystem? pg. 90. a. biotic and abiotic factors 1. biotic factors- biological...
TRANSCRIPT
4-2 What Shapes an Ecosystem?
Pg. 90
A. Biotic and Abiotic Factors
• 1. Biotic Factors- biological influences on organisms within an ecosystem.
• 2. Abiotic Factors- Physical or non-living influences on an ecosystem.
Labeling! A for Abiotic or B for Biotic
• Water• Fish• Frog• Rock
• Dirt• Air• Plant• Bacteria
B. The Niche• 1. Niche- full range of
physical or biological conditions in which an organism lives and the way in which it uses those conditions.
• Example: Warbler Niches Pg. 92
C. Community Interactions
• 1. Competition- Organisms of the same or different species attempt to use resources at the same place and at the same time.
Brainstorm!
• List 3 things in an ecosystem that you think organisms would compete for…….
C. Community Interactions
• 2. Predation- Interaction in which one organism captures and feeds on another organism.
C. Community Interactions
• 3. Symbiosis- Relationship in which 2 species live closely together.
C. Community Interactions
• 4. Mutualism- Situation in which both species benefit. (Type of Symbiosis)
C. Community Interactions
• 5. Commensalism-Situation in which one species benefits and one species is neutral. (Type of Symbiosis)
C. Community Interactions
• 6. Parasitism- One organism lives on or inside another organism and harms it. (Type of Symbiosis)
Mutualism
•Positive +•Positive +
Commensalism
•Positive +•Neutral 0
Parasitism
•Positive +•Negative -
Symbiotic Relationships Between 2 Species
Mutualism1
Parasitism1
Commensalism1
Types of Symbiosis
Match Madness
• Competition• Predation• Mutualism• Commensalism• Parasitism
• Polar Bear catching fish• Barnacles on whale skin• Tapeworm in human
intestines• Two Lions fight for food• Ant takes care of
aphids, aphids feed ants
T
D. Ecological Succession
• 1. Series of predictable changes in an ecosystem in response to natural and human disturbances.
• Come up with one example of a NATURAL disturbance and a HUMAN disturbance to the environment.
• Natural Disturbance-_________________• Human Disturbance-_________________
D. Ecological Succession
• 1. Primary Succession- Succession on surfaces where there is no soil.
• Example: Volcanic Eruption builds new islands; only ash and rock, no soil.
D. Ecological Succession
• 2. Secondary Succession- Restoration of an ecosystem after a disturbance.
• Example: After a wild fire, trees begin to grow and other living things inhabit the area.
Exit Ticket: Word Splash
• Using the Words below, Write one paragraph using 5 complete sentences.
• Biotic, Abiotic, Niche, Community Interactions, and Ecological Succession
• Underline each of the words required in your paragraph please!