Food Webs Land Water Every organism on the
![Food Webs: Land Water • Every organism on the planet, including humans, are connected Food Webs: Land Water • Every organism on the planet, including humans, are connected](https://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-1.jpg)
Food Webs: Land Water • Every organism on the planet, including humans, are connected through a food web.
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![Producers, Consumers, and Decomposers • Producers • Make their own food using photosynthesis • Producers, Consumers, and Decomposers • Producers • Make their own food using photosynthesis •](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-3.jpg)
Producers, Consumers, and Decomposers • Producers • Make their own food using photosynthesis • Plants, green algae, kelp, phytoplankton
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![Consumers • Eat other organisms for food • Cow, human, eagle Consumers • Eat other organisms for food • Cow, human, eagle](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-5.jpg)
Consumers • Eat other organisms for food • Cow, human, eagle
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![Decomposer • Break down the remains of other organisms • Fungi and some bacteria Decomposer • Break down the remains of other organisms • Fungi and some bacteria](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-7.jpg)
Decomposer • Break down the remains of other organisms • Fungi and some bacteria • Vital to ecosystems because they return important nutrients to the environment
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![Consumers are classified by their food source • Primary Consumers – Eat only producers Consumers are classified by their food source • Primary Consumers – Eat only producers](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-9.jpg)
Consumers are classified by their food source • Primary Consumers – Eat only producers • A cow eating grass is a primary consumer • Secondary Consumers – Eat primary consumers • Human eating a cow
![Grassproducer Grasshopperprimary consumer Toad. Secondary consumer Grassproducer Grasshopperprimary consumer Toad. Secondary consumer](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-10.jpg)
Grassproducer Grasshopperprimary consumer Toad. Secondary consumer
![Food Chain • Flow of energy from one organism to next in an ecosystem Food Chain • Flow of energy from one organism to next in an ecosystem](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-11.jpg)
Food Chain • Flow of energy from one organism to next in an ecosystem • Shows flow of energy from producer, to different consumers, and finally decomposers • Shows only one path
![Food Chain Food Chain](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-12.jpg)
Food Chain
![Food Web • Many food chains make up a food web • Food Web Food Web • Many food chains make up a food web • Food Web](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-13.jpg)
Food Web • Many food chains make up a food web • Food Web – Interconnected network of food chains within an ecosystem
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![Aquatic Food Web • Food web showing relationships between aquatic organisms Aquatic Food Web • Food web showing relationships between aquatic organisms](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-15.jpg)
Aquatic Food Web • Food web showing relationships between aquatic organisms
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![Terrestrial food web • Terrestrial food web – Food web showing relationships between land Terrestrial food web • Terrestrial food web – Food web showing relationships between land](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-18.jpg)
Terrestrial food web • Terrestrial food web – Food web showing relationships between land organisms
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![Terrestrial and Aquatic Food Webs • They can also be connected – Bear eating Terrestrial and Aquatic Food Webs • They can also be connected – Bear eating](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-20.jpg)
Terrestrial and Aquatic Food Webs • They can also be connected – Bear eating fish out of a river – Birds diving for fish in lakes and oceans – Fish eating insects that land on the water
![Food Chains and Food Webs • Trophic Level – Each feeding level in an Food Chains and Food Webs • Trophic Level – Each feeding level in an](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-21.jpg)
Food Chains and Food Webs • Trophic Level – Each feeding level in an ecosystem is located within a tropic level – Organisms at each tropic level take in energy from the organisms they eat
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![Energy Flow Between Organisms. Pyramid • Within an ecosystem, the energy flow between trophic Energy Flow Between Organisms. Pyramid • Within an ecosystem, the energy flow between trophic](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-23.jpg)
Energy Flow Between Organisms. Pyramid • Within an ecosystem, the energy flow between trophic levels does not remain constant • At each level some animals use the energy taken in to perform life processes – Some energy is given off as heat – Some energy is stored in bones and teeth that may not be eaten by another animal
![Energy Flow between trophic levels • Only 10% of the energy is passed onto Energy Flow between trophic levels • Only 10% of the energy is passed onto](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-24.jpg)
Energy Flow between trophic levels • Only 10% of the energy is passed onto the next higher trophic level Energy in an ecosystem can be measured in total number of animals or combined mass of all animals • Increase a level animals increase in size • Increase a level, animals decrease in number
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![Review Review](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-27.jpg)
Review
![1. Which of these animals is a primary consumer? (eats a producer) A B 1. Which of these animals is a primary consumer? (eats a producer) A B](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-28.jpg)
1. Which of these animals is a primary consumer? (eats a producer) A B C
![2. If the producers in an ecosystem produce 250, 000 kilocalories of energy, how 2. If the producers in an ecosystem produce 250, 000 kilocalories of energy, how](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-29.jpg)
2. If the producers in an ecosystem produce 250, 000 kilocalories of energy, how much energy is available in the third trophic level? • • A. 5, 000 kilocalories B. 2, 500 kilocalories C. 250 kilocalories D. 25 kilocalories
![2. In a marine food web, which of the following would get its energy 2. In a marine food web, which of the following would get its energy](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-30.jpg)
2. In a marine food web, which of the following would get its energy directly from the sun? • • A B C D krill fish algae killer whale
![3. Which of these animals is a secondary consumer? A B C 3. Which of these animals is a secondary consumer? A B C](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-31.jpg)
3. Which of these animals is a secondary consumer? A B C
![• • 4. Which of the following situations show a terrestrial and aquatic • • 4. Which of the following situations show a terrestrial and aquatic](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-32.jpg)
• • 4. Which of the following situations show a terrestrial and aquatic food web connection A. A seagull eating an insect on the beach B. shark eating a tuna C. seagull eating a fish D. bear eating a deer
![• • 5. Which of the following situations show a terrestrial and aquatic • • 5. Which of the following situations show a terrestrial and aquatic](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-33.jpg)
• • 5. Which of the following situations show a terrestrial and aquatic food web connection A. B. C. D. A furry bear eating a tasty squirrel An awesome human eating a slow deer A swift pelican eating a large tuna A frisky shark snacking on a cute dolphin
![Create a terrestrial and aquatic food web poster. • Your food web must have Create a terrestrial and aquatic food web poster. • Your food web must have](http://slidetodoc.com/presentation_image_h/24d6973c5445e1b219aeb42aae69f839/image-34.jpg)
Create a terrestrial and aquatic food web poster. • Your food web must have 6 animals • There must be two connections between terrestrial and aquatic food webs. • Identify 1 primary consumer, 1 secondary consumer, and 1 producer.
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