The purpose of this classroom video is to see examples of ways students describe differences between food webs and food chains in the ocean. Using the energy from the sun, water and carbon dioxide from the atmosphere and nutrients, they chemically make their own food. Food webs are more complicated than a food chain, where energy and nutrients flow in a simplified, linear pathway between primary producers, primary consumers, and secondary consumers. In the case of marine ecosystems, the trophic level of most fish and other. Ask students if they know how plants and animals live and grow in the ocean. Ocean food chainswebs are also connected to land organisms bears may eat fish, dead things on beach, raccoons may eat shelfish, etc. Food webs a web food is made up of interconnected food chains.
Food chain and food web definition, diagram, examples, videos. Ocean abiotic factors, continued tides are the periodic shortterm changes in the height of the ocean surface at a particular place. Worksheets are 5 ovr l lesson 1 understanding food chains and food webs, food webs and food chains work, food web, its a plankton eat plankton, food chains and food webs, ecosystems food chains and food webs food chains and food, skills work food chains and food webs, 2161 food 116. An ocean food web is specific for organisms in the ocean. Displaying all worksheets related to food chains ocean. Ocean ecosystem descriptions national geographic society. Pictures demonstrating the difference between a food chain and a food web provided 5.
This is a worksheet that reinforces food webs using an ocean food web. Home science math history newsletters links 4th grade science sols. Just a few hundred years ago, sea otters peppered the west coast of america and canada. Ocean food web the exploring nature educational resource. The trophic level of an organism is the position it occupies in a food web. The linkages in a food web illustrate the feeding pathways, such as where heterotrophs obtain organic matter by feeding on autotrophs and other heterotrophs. Any given food web cant be without the sun, producers, consumers, and decomposers. The oceans are huge, covering almost three quarters of the earths surface. Copepods feed on dinoflagellates and incorporate this energy into their own tissues. Life in the food chain strand interrelationships in earthspace systems topic investigating marine food chains primary sol 5. An example of a food chain in this diagram is when the diatoms get eaten by copepods. Producers are the base of the food web without the producers, the food web would collapse. Apr 12, 2016 unit 5 living resources of the ocean 14 overview living resources of the ocean 1 lesson 1 understanding food chains and webs 2 lesson 2 an ocean of energy 2 lesson 3 seafood and human health 1 lesson 4 sustaining our ocean resources 3 unit 6 life in the open ocean 24 overview life in the open ocean 1. Hold a class discussion about the basic concept of a marine food chain.
The ocean s ecosystem and biology are gradually changing. Pictures represent the organisms that make up the food web, and their feeding relationships are typically shown with arrows. An ecosystem cannot be understood without knowledge of how its food web determines the flow of materials and energy. You may notice, however, that even the picture of the food web is incomplete since only a small number of ocean species are represented.
Now examine the food web after humans became part of the chesapeake bay ecosystem through fishing. For additional classroom context, video analysis, and reflection opportunities, read the picture of practice page for marine food webs in the one ocean environmental literacy teacher guide, page 59. If one link in a food chain is gone, there are alternate food sources. This activity can be done indoors on paper or outdoors on a tarmac surface using chalk. By the end of this activity, students should be able to. They are eaten by primary consumers like zooplankton, small fish, and crustaceans. From massive marine mammals like whales to the tiny krill that form the bottom of the food chain, all life in the ocean is interconnected. Ocean food chain ocean food, ocean food chain, ocean food web. What plants and animals are part of an ocean food web. Questions for chesapeake bay food web after large scale fishing 1. In this way, phytoplankton functions as the foundation of the marine food web by supporting all other life in the ocean.
Light and the availability of food heavily influence the distribution of life within the oceans,9 and many of the. Ocean food web worksheets learn how algae, fish and dolphin are related in this food web, its not a simple food chain see what theyre missing. A food chain is a single pathway connecting a producer with several levels of consumers. Open ocean currents carry nutrients to different parts of the ocean. In the pelagic zone the most common plant is phytoplankton. A food chain in the ocean begins with tiny onecelled organisms called diatoms, which make their own food from sunlight. Primary producers are always the first trophic level and are represented at the bottom of an ecological pyramid. Food webs throughout the world all have the same basic trophic levels. Food chain is a linear sequence of organisms which starts from producer organisms and ends with decomposer species. Ask students if they know what some ocean plants are called algae, seaweed, kelp and to name their favorite ocean animal snail, shrimp, sea star, cod, salmon, shark, tuna. The food web below shows the role of producers in a marine ecosystem. The transfer of food energy from a plant source through a succession of animals eating and being eaten is called a food chain.
Due to increased carbon emissions, the ocean is becoming more acidic. In the visual below, you can see an example of a food web in the open ocean ecosystem and also one food chain that is a part of that food web. Tides are caused by the interaction of gravitational forces of the sun and moon and the rotation of the earth. The ocean is a major source of food, medicine and jobs for our human family. Large populations of plankton drift along on ocean currents and form the base of the open ocean food web. Some of the worksheets for this concept are its a plankton eat plankton, student activity build a marine food web, lesson 2 build your own ocean food web, food webs and food chains work, lesson 3 who eats whom, skills work food chains and food webs, food web, food chains and food webs. Ocean food web looking at the ocean food web, identify all the parts of the ocean food web, and list them below. The role of whales in southern ocean ecosystems lisa t. Top ocean predators include large sharks, billfish, dolphins, toothed whales, and large seals.
Background information ocean animals eat plants and animals they find nearby. Looking at the ocean food web, can you identify all the parts of the ocean food web. This activity can be done indoors on paper or outdoors on a tarmac surface using. Small fish eat the shrimplike creatures, and bigger fish eat the small fish. Build a marine food web activity idea in this activity, students build their own food web using images of organisms from the marine ecosystem. The amazing undersea food web the amazing undersea food web. Complete the same chart that you completed for the previous food web, and color or check which species groups are now rare or abundant.
Overview living resources of the ocean 1 lesson 1 understanding food chains and webs 2 lesson 2 an ocean of energy 2 lesson 3 seafood and human health 1 lesson 4 sustaining our ocean resources 3 unit 6 life in the open ocean 24 overview life in the open ocean 1 lesson 1 where in the world is the open ocean. Phytoplankton, which make their own food, are eaten by zooplankton. Students investigate marine food webs and trophic levels. This shows how connected the ocean ecosystem is, and how ocean acidification strikes at the base of the food web. Safety pins optional background information for educators one way of classifying different organisms that live in an ecosystem is. The producers use this energy until a consumer eats it. They will show the longest and shortest chains found in the food web. In this cool science fair project, discover how tiny ocean life feeds some of the largest animals on the planet. Aquatic food webs national oceanic and atmospheric.
They develop vocabulary and assemble a list of the marine organisms that are used as food and are sold in stores in hawaii using advertisements from local newspapers. In the ocean, as on land, energy flows directly or indirectly from producers to consumers. Read this article on the ocean food web to find out precisely what it is that keeps the circle of life in the ocean, and hence on earth, in balance, and what disrupts it. They will also discuss impacts of removing or overpopulation of a species in the food web. Food chain follows a single path whereas food web follows multiple paths. All other life in the ocean needs phytoplankton to survive.
Several pressures influence the marine food webs, e. Primary consumers are in turn eaten by fish, small sharks, corals, and baleen whales. Most pelagic animals dont need to live near the ocean surface because they can get their energy from plants and animals at any depth. A food web is a series of organisms dependent on other organisms for their food sources. Food chains and food webs food chains all living organisms plants and animals must eat some type of food for survival. Canadian mom blogger, homeschooling 3 kids sharing kids printables, kids activities, homeschooling tips, parenting and organization ideas. Another name for food web is consumerresource system.
Ocean food chain ocean food, ocean food chain, ocean. In a typical marine food chain, dinoflagellates convert energy from sunlight into food through photosynthesis and store it in their tissues. Have the students identify a producer in the ocean e. An ocean of food chains and food webs sea earth atmosphere. Powerpoint file and pdf showing examples of roles played by different organisms in a food web provided 4. Those consumers will continue to be eaten by other consumers and as you go up to the large sharks the energy has depleted significantly.
Ra tios of production or biomass between different trophic levels in the food web provide measures of the pattern of energy flow, and the efficiency of energy. They develop vocabulary and assemble a list of the marine organisms that are used as food and are sold in stores in hawaii. Food chains, food webs, and energy pyramids can be helpful tools for understanding how the living things in an ecosystem depend on each other for the matter and energy they need to grow and perform daily activities. While the ocean seems vast and unending, it is, in.
Ocean food web practice worksheet by breda science and. We may use cookies to record some preference settings and to analyse how you use our web site. Basic to the understanding of any ecosystem is knowledge of its food web, through which energy and materials flow. All living organisms plants and animals must eat some type of food for survival. Ecologists can broadly lump all life forms into one of two categories called trophic levels. The green crab, for example, is a consumer as well as a decomposer.
Most groups of species consume 310 times more than they produce, and export or pass up the food web about 7095% of their production. Feb 27, 20 the purpose of this classroom video is to see examples of ways students describe differences between food webs and food chains in the ocean. Pdf over 100 food webs have been published for marine ecosystems to describe the transfer of food energy from its source in plants, through. A food web is a schematic that shows how energy and nutrients flow between different organisms in an ecosystem. In this lesson, well learn what a food web is and what types of food webs are in the pacific. In this activity, students build their own food web using images of organisms from the marine ecosystem. These producers live in the upper region of the ocean. Plants make their own food through a process called photosynthesis. Marine organisms tend to be larger at successive trophic levels and are. Most communities include various populations of producer organisms which are eaten by any number of consumer populations. Producers use sunlight to produce energy through photosynthesis primary consumers eat producers secondary consumers eat other consumers scavengersdetrivores eat plant and animal matter floating in the ocean. This lesson is on the food web of the pacific ocean.
Report of task group 4 food webs of marine strategy framework. They will identify producers and the energy source for all food webs. While a host of human impacts are to blame for keeping otters near the edge of extinction today loss of habitat, competition, diseases, oil spills, it was the fur trade. A food chain is a model of how energy moves from one organism to another in a community. Noaa nospacific services center noaa inouye regional center 1845. Build a marine food web in this activity, students build their own food web using images of organisms from the marine ecosystem. The oceans food web, a changing paradigm semantic scholar. There are also reflection or short answer questions included that can be printed on the back. Whales as drivers of food web restructuring topdown forcing despite its popularity among southern ocean ecologists 25 years ago, the topdown hypothesis consumer effects on resources has been largely replaced by an emphasis on bottomup explanations ainley et al. Phytoplankton autotrophically produces biomass by converting inorganic compounds into organic ones. The food web is a simplified illustration of the various methods of feeding that links an ecosystem into a unified system of exchange. We may also use external analysis systems which may set. Use teacher login to show answer keys or other teacheronly items. Knowledge application use what you have learned to explain how a food web is different from a food chain additional learning take a look at the lesson called, ocean food web lesson for kids if.
From the food chain, we get to know how organisms are connected with each other. Humans consume aquatic life from every section of this food web. A food web or food cycle is the natural interconnection of food chains and a graphical representation usually an image of whateatswhat in an ecological community. Food chain and food web definition, diagram, examples. In the marine food web, special producers are found. Ocean food web ocean acidification poses grave threats to krill, plankton, shellfish and coralsthe loss of which would impact nearly every ocean creature and shore bird. Oceans form the largest habitat on earth which supports the greatest variety of life. Life in the food chain virginia department of education. Ocean food web worksheets living life and learning.
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