Food Webs

Food Webs Chapter 17 Community Webs Summerhayes and Elton studied feeding relations on Bear Island in High Arctic. Primary producers were terrestrial plants and aquatic algae. Fed on by several kinds of terrestrial and aquatic invertebrates. Consumed by birds.

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Food Webs

Food Webs. A food web describes the feeding relations among organisms in all or part of a community Usually those feeding relations are described by a diagram linking the consumers and consumed with lines or arrows. Food Webs. Example of a food web. Food Webs.

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Food webs

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Food Webs

Food Webs. Chapter 17. Outline. Community Webs Complexity and Structure Keystone Species Effects on Diversity Exotic Predators Mutualistic Keystones. Community Webs. Summerhayes and Elton studied feeding relations on Bear Island in High Arctic.

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Marine Food Webs

Marine Food Webs. A complex ecosystem. A marine food web. Arrows point to where the energy is GOING!. Trophic levels. Label the Producer 1° consumer 2 ° consumer 3 ° consumer Why the pyramid shape?. A trophic level is the level at which a particular organism feeds in the ecosystem.

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Food Webs

Food Webs. Food chain: Linear series of feeding relationships . Food web: Shows the overlapping and interconnected food chains present in a community. Food Webs. Food Web Question. Using the food web on page 147 , what would lead to an increase in the amount of largemouth basses?.

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Food Webs!

Food Webs!. By: Y esenia Sanchez. This is the food web. What’s a food web?.

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Food Webs

Food Webs. Community. All organisms inhabiting a particular area. Autotrophs. Producers – self feeding Produce their own organic material Green plants Called primary producers. Heterotrophs. Consumers Organisms which must consumer organic material to obtain energy. Consumers.

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Food Webs

Food Webs. Color Your Food Web Cards. Consumers: Carnivores/Omnivores. 1 st Level Consumers/EATS PLANTS. SUN: Light Energy. Producers: The Plants. Consumers: EATS Insects. Scavengers. Decomposers. Creating Your Food Web. Key. Cut out your organisms and arrange on poster

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Food Webs

Food Webs. Food Chains vs. Food Webs. A food chain is one set of eating relationships. Food Chains vs. Food Webs. A food web is a network of food chains. NO food webs are complete . Producers. Use the sun’s energy to make food using photosynthesis

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Food Webs

Food Webs. IGCSE Biology. grass. fox. STARTER: Changes in food chain populations. The organisms in a food chain are dependent on each other. Changes in the number of organisms in one part of the food chain can have dramatic effects on the rest of the food chain. rabbit.

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Food Webs

Food Webs. Chapter 17. Figure 17_01. Food Webs. Chapter 17. Food Web Complexity. Winemiller described feeding relations among tropical freshwater fish. Represented food webs in various ways: Only included common species. Top-predator sink. Excluded weakest trophic links.

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Food Webs

Food Webs. Catalyst: Describe evolution in your own words. Solve: Shaq is selling candy, M&M’s and Twix. He sold 48 total candy bars. He sells M&M’s for 2 dollars and Twix for 3 dollars and made 124 dollars total. How many of each bar did he sell?. Write in complete sentences!

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Food Webs

Food Webs. In the wild, animals may eat more than one thing, so they belong to more than one food chain. To get the food they need, small herbivores may eat lots of different plants, and carnivores may eat many different animals. Food Webs.

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Food webs

Food webs. In this activity, you are to build a food web representing the New Zealand bush ecosystem. Students use images of organisms within the ecosystem to explore the relationships between them. By the end of this activity, students should be able to:

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Marine Ecosystems and Food Webs

Marine Ecosystems and Food Webs. Carbon Cycle. Marine Biota. Export Production. Export Production of Organic Carbon. Ocean Ecosystem Structure. Trophic levels and dynamics. Ocean Ecosystem Structure. Trophic levels and dynamics. Ocean Ecosystem Structure. Trophic levels

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Food Webs

Food Webs. Review. Food chains represent flows of matter and energy They are always pyramid shaped. Energy Flow in Ecosystems. Three things can happen to the energy taken in by the organisms in a trophic level:

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Food Webs

Food Webs. Food webs are sometimes simplified (conceptually) to the drama of a single predator-prey interaction but, these are the (proverbial) tip of the iceberg. Ecological community interactions are extremely complex…. Most food web are extremely complex.

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Marine Food Chains/Webs

Marine Food Chains/Webs. Energy from primary production is transferred up the trophic chain Each step is inefficient (~90% energy is lost) Shorter chains are more efficient at producing apex predators. Bottom Up Control on the Marine Food Webs. h n. CO 2. O 2. Phytoplankton. Food Web.

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Marine Food Webs

Marine Food Webs. A complex ecosystem. Introduction to Ecosystems. Producers turn the sun’s energy into usable energy for consumers. Consumers will feed on producers or other consumers for energy.

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Food webs

Food webs. Food webs. Food webs: some basic concepts and descriptive parameters trophic species : functional groups of all organisms in a web that share the same set of consumer and resource species guild : a group of species utilising the same resource in the same manner [e.g. leaf-miners]

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The Marine Food Webs

The Marine Food Webs. What regulates a planktonic food web? Light Nutrients Importance of the Type of Nutrient Size and Export Food Web Structure Examples of what controls a food web El Nino Iron Ex. Oscar Schofield (oscar@ahab.rutgers.edu). carnivores. omnivores. autotrophs.

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