Lab Wk 12 Post Lab questions Ecosystems.docx - Week 12 Lab-Ecosystems BRENNA FERRELL Ecosystem Pyramids of Energy Numbers Forest \u2206Energy \u2206Numbers

Lab Wk 12 Post Lab questions Ecosystems.docx - Week 12...

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Week 12 Lab-EcosystemsBRENNA FERRELLEcosystemPyramids of Energy & NumbersProducers1stOrder Heterotrophs2ndOrder Heterotrophs3rdOrder HeterotrophsForest∆Energy345.6218192∆Numbers3456218019020Desert∆Energy18.5742.12∆Numbers189740212Grassland∆Energy54689.96.43.42∆Numbers547,80064342Ocean∆Energy1744.20.5∆Numbers5,4781740425Lake∆Energy1230054.72.30.2∆Numbers123,000547232Calculate the Energy Conversion Efficiency (ECE) between the trophic levels.ECE= energy at higher trophic level/energy at lower trophic level (example Lake: 8/81=ECE)ECE = ___________________Questions: (highlight the correct response)1. The first trophic level is occupied by a. producersb. herbivores (or primary consumers)c. primary carnivoresd. omnivores2. In discussing the energy pyramid, it is important to remember that there is about a ___ loss of energy as we proceed from one trophic level to the next higher level.

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