PPT-TROPHIC LEVELS

Detritivore an organism that feeds off of dead plant or animal matter breaks down organic material Organisms that produce their own energy PRODUCERS CONSUMERS AUTOTROPHS Organisms obtain energy from . Elisa, Chelsea, Ellie. Trophic Cascades. Herbivores can limit plant populations, but…. In most places, plants are abundant and herbivores don’t limit plant growth. So…why is the world green?. HSS hypothesis. Assessment Statements. Define species, habitat, population, community, ecosystem, and ecology. Distinguish between . autotroph. and . heterotroph. Ditinguish. between consumer, . detritivores. and . trophic. levels. Energy and Ecosystems . Learning Objectives. All students should be able to calculate:. The percentage of energy transferred from one . trophic. level to the next.. Percentage efficiency of energy transfers .. Relate the structure of each of the major plant organs and tissues to physiological processes.. Explain how the structures of plant tissues and organs are directly related to their roles in physiological processes.. How do populations interact?. Populations compete amongst themselves & . between . other populations. …amongst themselves. Populations compete amongst themselves & between other populations. Beyond two trophic levels. HSS 1960. Oksanen. et al. 1981. Control, Limitation, Regulation. Bottom-up vs. Top-down. Trophic cascades. Beyond two trophic levels…. Why is the world green?. Observation: Plants are abundant; thus…. TROPHIC LEVELS. An organisms trophic (feeding) level is determined by the organism’s source of energy. There are 3 main trophic levels in a food web.. Autotrophs. Heterotrophs. Saprotrophs. 1. AUTOTROPHS:. Autotroph:. Heterotroph:. Food Chain:. Food Web:. Trophic Level:. Energy is transferred in ecosystems. Producers give E to . Consumers. Food chains show flow of energy (arrows  show where energy is going). Food Web. Energy . Paramid. Period 6. Fowlers, Jonah. Hendricks, Justina. Dennis, . Tamesha. Abreu, Anabel. McNeal, . Kahil. Tovias. , Stephanie. Bates, Tyree. Rochay. , Cody. Jeske. , Kaeden. Brown, Erica. using various models including . food chains. , food webs, and ecological pyramids. Lesson frame. :. We will analyze the flow of energy and matter through a food chain.. I will complete the Looney Labels Food Chain activity. LEVELS. ECOLOGICAL. PYRAMIDS. The . ____. is the . ______________. for food chains.. . is a sequence of feeding relationships describing . ______. ___________________. .. source. Ecosystem. A community and its abiotic environment. The sun is the main source of energy for most ecosystems. All life that you see on Earth’s surface relies either directly or indirectly on sunlight. Mrs. Milam. Adapted from Ms. Davies. 5.1.1 Define . species, habitat, population, community, ecosystem . and . ecology.. Ecology. : . . Environment has 2 components: . . . PRESS SLIDE SHOW. Objectives. Realise . in every food chain there is a producer and consumers (4b). Draw food chains from list of animals given(4b. ). Describe the feeding relationships shown by food chain (.