Constructing biomass pyramids

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Constructing biomass pyramids

Module Description Explore a NetLogo model of populations of rabbits, grass, and weeds. First, adjust the model to start with a different rabbit population size. Then adjust model variables, such as how fast the plants or weeds grow, to get more grass than weeds.

Constructing biomass pyramids the amount of energy the grass or weeds provide to the rabbits and the food preference.

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Use line graphs to monitor the effects of changes you make to the model, and determine which settings affect the proportion of grass to weeds when rabbits eat both.

Students complete activity in pairs Students are required to discuss module questions as they complete exercises Teacher Note: Concord Consortium requires an updated version of flash software and CC Launcher. Explain 15 minutes In this section of the lesson, students read an article titled Energy Pyramids from cK Once students have read article they answer text-dependent questions RST.

Cite specific textual evidence to support analysis of science and technical texts. What is a trophic level? Why are the number of trophic levels limited? Draw an energy pyramid using this information.

In addition to the reading, I show students the Ecological Pyramids video. This video meets the needs of EL and visual learners. As students watch the video, they answer the following questions in their interactive notebooks: What are three types of ecological pyramids?

How do their shapes compare? Do you think it would be possible to construct a pyramid where the number of carnivores was more than the number of herbivores?

Why or why not? Do you think it would be possible to construct a pyramid where the biomass of carnivores was more than the biomass of herbivores?

How does this compare to a numbers pyramid. What consumes energy at each trophic level? How does this contribute to energy loss between trophic levels? Elaborate 10 minutes In this section of lesson students elaborate on what they have learned by reading an article titled The Eco Pyramid from ReadWorks.

The non-profit ReadWorks is committed to solving the nation's reading comprehension crisis by giving teachers the research-proven tools and support they need to improve the academic achievement of their students.

Most importantly, ReadWorks is faithful to the most effective research-proven instructional practices in reading comprehension. At end of reading students answer text-dependent questions included in reading passage.We can construct pyramids of biomass, energy, and numbers to represent the relative sizes of trophic levels in ecosystems.

Pyramids can often be "inverted" as a consequence of high production rates at lower trophic levels. In this food chains worksheet, learners complete a crossword puzzle by placing 16 terms into the puzzle that match the clues given. Students review food webs, biomass pyramids, and the water cycle.

Trophic pyramid | Definition & Examples |

(biomass), or the amount of energy available at each level. Pyramids are constructed by drawing a stack of rectangles, with the area of the rectangle representing the quantity for that level.

In the energy pyramid, the producers are on the bottom and the carnivores on top, and as you move up the pyramid, less energy is available. Energy Pyramid Review 1. Life Science: Session 7.

Constructing biomass pyramids

Energy Pyramids What is an energy pyramid. Energy pyramid.

Environmental Awareness Naturalist intelligence

An energy pyramid is a graphical model of energy flow in a community. The different levels represent different groups of organisms that might compose a food chain. From the bottom-up, they are as follows. An ecological pyramid (also trophic pyramid, eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass.


Apr 5, level, typically only 10% is used to build new biomass (Pauly and. Christensen, ) and the remainder is consumed by metabolic processes.

Ecological/Biological pyramids