ecology notes sheet
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Ecology Notes Sheet. All images are a part of the Creative Commons license of free use. Ecology. The study of the relationship between organisms and their environment. All images are a part of the Creative Commons license of free use. Environmental Factors. - PowerPoint PPT PresentationTRANSCRIPT
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EcologyThe study of the relationship between
organisms and their environment
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Environmental FactorsBiotic: are living or were once livingAbiotic: never living
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Biotic or Abiotic?
Symbiotic RelationshipsCommensalism: One
species benefits, one is unharmed
Mutualism: both species benefit
Parasitism: one species benefits, one is harmed or diesParasite feeds on hostHost: where Parasite lives
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Examples of Symbiotic Relationships
Example 1:A bird builds its nest in a tree. The tree offers protection and support for the nest. The nest causes no harm to the tree.
Example 2: A mosquito bites you. The mosquito gets nutrients from you. Your mosquito bite itches.
Examples of Symbiotic Relationships
Example 3: A harmless bacteria lives in human intestine. The bacteria produces vitamin B-12 for the human. The human provides and place to live and food to eat.
Example 4:Max, a Rottweiler, is infested with fleas. The fleas feed on Max. This makes Max sad.
Examples of Symbiotic Relationships
Mutualism Mutualism
Commensalism
Parasitism
CommensalismAll images are a part of the Creative Commons license of free use
Examples of Symbiotic Relationships
Mutualism Parasitism
ParasitismCommensalism
Mutualism
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ProducerPerforms photosynthesis
6CO2 + 6H2O + sunlight → 6O2 + C6H12O6 Sun is the source of all energyExample: Phytoplankton (drifting producer)
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ConsumerPerforms respiration
6O2 + C6H12O6 → 6CO2 + 6H2O + energyExample: Zooplankton (drifting consumer)
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Types of Consumers• Carnivore: eats only meat• Herbivore: eats only plants• Omnivore: eats both plants and meat
Predator – hunts prey [ is a Carnivore]Prey – hunted for food [is an Herbivore or
Carnivore]
NOTE: Vegetarians are omnivores, not herbivores. (Vegetarians choose to not eat meat, herbivores cannot digest meat)
Examples of ConsumersPredator: hunts prey
Scavenger: feeds on already dead animals
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DecomposerBreaks down dead organismsBacteria and Fungi
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Food ChainA series of
producers and consumers – step by step up the food pyramid
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Food WebNumerous
inter-connected food chains in a biome
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