5. The organisms used as examples in this activity are common in lake and river ecosystems in North America. Using the information below construct a food web of a typical lake ecosystem in the space provided below. Algae undergo photosynthesis Zooplankton eat algae • Minnows eat zooplankton, algae and insect larvae Largemouth bass eat sunfish and minnows Sunfish eat minnows and insect larvae Osprey eat largemouth bass Insect larvae eat zooplankton and algae Snapping turtles eat minnows and sunfish

5. The organisms used as examples in this activity are common in lake and river ecosystems in North America. Using the information below construct a food web of a typical lake ecosystem in the space provided below. Algae undergo photosynthesis Zooplankton eat algae • Minnows eat zooplankton, algae and insect larvae Largemouth bass eat sunfish and minnows Sunfish eat minnows and insect larvae Osprey eat largemouth bass Insect larvae eat zooplankton and algae Snapping turtles eat minnows and sunfish

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter54: Ecosystems And Global Change

Section: Chapter Questions

Problem 1TYK

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Use the information show below to draw a food web. The organisms shown in bold must be included. a picture of the food web you drew. Phytoplankton do photosynthesisZooplankton eat phytoplanktonMinnows eat phytoplankton, zooplankton, and insectsLargemouth bass eat sunfish and minnowsSunfish eat minnows and insectsOsprey eat largemouth bass and sunfishInsects eat phytoplankton and zooplanktonSnapping turtles eat minnows and sunfish.
A salmon feeds on crabs and small fishes, which in turn feed on zooplankton that feed on phytoplankton which in turn uses up nitrates in the water. If there are overfishing of salmons, which things should decrease? a. zooplanktonb. small fishc. phytoplanktond. a and de. b and c
Many people who want to reduce their ecological footprinthave focused on how much energy is expended (and howmany climate-warming greenhouse gases are emitted) intransporting food from its place of production to its place ofsale. The typical grocery store item is shipped by truck, air,and/or sea for many hundreds of miles before reaching theshelves, and this transport consumes oil. This concern over“food-miles” has helped drive the “locavore” movement tobuy and eat locally sourced food.However, food’s transport from producer to retailer, asmeasured by food-miles, is just one source of carbon emissionsin the overall process of producing and delivering food. In2008, environmental scientists Christopher Weber and H. ScottMathews conducted a thorough life-cycle analysis (p. 400) ofU.S. food production and delivery. By filling in the table below,you will get a better idea of how our dietary choices contribute toclimate change. After measuring mass, energy content, and dollar valuefor each…
In a pond ecosystem, mosquito larvae feed on photosynthetic algae. Other larvae, such as dragonfly larvae, feed on the mosquito larvae. The dragonfly larvae are, in turn, consumed by fish, whichcan be preyed upon by raccoons.Which organism is a primary consumer in this ecosystem? 1.Mosquito larvae2. Fish3. Algae4. Dragonfly larvae
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In an ecosystem, these organisms are responsible for convertingsolar energy to the stored energy found in organic compounds. a. herbivoresb. decomposersc. producersd. carnivorese. None of these are correct.
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6. Mant top level consumers are large carnivores. Explain how their size affects or is affected by the dynamics of energy, biomass and/or numbers pyramids. 7. What other factors in an ecosystem may affect pyramid shapes for that ecosystem? 8. What level of an ecological pyramid would contain humans? Please explain your choice. 9. Many farmers use pesticides on their fields to keep pests from eating their crops. These pesticides, however, can have serious, negative effects on other organisms thaat interact with the ecosystem. For that reason, some people have suggested that bringing in predators to eat the pests would be a better soulution than pesticides. a. Explain what affeccts bringing predators in could have on the ecosystem. b. Which level of organisms is most susceptible to extinction. Please support your answer.
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