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NATURE UNBOUNDLESSON 4 – INTERACTIONS AMONG ORGANISMS
Conservation
Mr. Dieckhoff
WATCH THE FOLLOWING 3 INTERACTIONS BETWEEN ANIMALS, WHAT IS DIFFERENT ABOUT EACH ANIMALS INTERACTION WITH THE OTHER ANIMAL?
Turkey Buzzard & Bald Eagle: https://www.youtube.com/watch?v=gjpiq0leaUs
Mink & Muskrat: https://
www.youtube.com/watch?v=qeo5moeV254
Bee & Purple Coneflower: https://
www.youtube.com/watch?v=rq7p9OpT56M
ANIMAL INTERACTIONS Relationship between two or
more organisms that affects growth, survival, or reproduction of participants Categories
1. Competition – Example – turkey buzzards & bald
eagle
2. Exploitation – Example – Mink killed the
muskrat
3. Mutualism – Example – bee and purple
coneflower
How would you categorize the following interactions:
ORGANISMS COMPETE FOR LIMITED RESOURCES
Competition – Indirect competition – Intraspecific competition – Interspecific competition –
COMPETITION MANAGEMENT
Competition affects growth, survival, & reproduction
Timber Stand Improvement https://
www.youtube.com/watch?v=6BsI72_w-VI
NICHE Niche – describes everything affecting a
particular species’ existence, including the range of environmental conditions the species can tolerate, what the species needs to grow, survive and reproduce, and how the species interacts with its biotic and abiotic environment Fundamental Niche – Realized Niche –
2 SPECIES CANNOT HAVE THE SAME NICHE
Competitive Exclusion Principle (Gause) – Marine Example:
https://www.youtube.com/watch?v=rZ_up40FZVw
Resource Partitioning – Warbler Example:
https://www.youtube.com/watch?v=LBFnJtTkV4c
EXPLOITATION
Benefits one organism but harms another Predators – https://
www.youtube.com/watch?v=wFv0-TdIt3U Herbivores – Parasites – Host –
ADAPTATION IN EXPLOITATION
Adaptations either enhance or hinder an animals ability to exploit another animal Brood Parasite –
Brown Headed Cowbird: https://www.youtube.com/watch?v=k3vAPMUW4CA
Leave forest intact Warning Coloration –
MIMICRY
Mimic – Model –
1. Batesian Mimicry – mimic resembles a model
Example: Clear Winged Moths
2. Mullerian Mimicry – model resembles another model
Example: Viceroy & Monarch butterfly
COMMENSALISM
Commensalism – Example – stick-tights (beggar ticks)
MUTUALISM
Symbiosis –
PREDATOR-PREY CYCLE
CONCLUSION
1. Interactions2. Competition3. Affects of Growth4. Management of Competition5. Niche6. Exploitation7. Mimicry8. Mutualism9. Predator-Prey Cycle