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 . And for as many years wall and ceiling contractors have tried to fulfill their obligations by providing the finish conditions envisioned but not truly described As a means of resolving a common problem in 1990 four major trade associations concerned 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 .. Energy Transfer. Energy transfers from one organism to another when they are consumed and metabolized.. Energy can be followed based on how organism obtain energy.. Trophic levels . – the position of an organism in a sequence of energy transfer. Energy Transfer. Energy transfers from one organism to another when they are consumed and metabolized.. Energy can be followed based on how organism obtain energy.. Trophic levels . – the position of an organism in a sequence of energy transfer. Unit 5 - Ecology. Introduction. Relationships exist in order for one or both organisms to get food (energy).. Sunlight is the main source of energy on Earth.. Section 1. Food Chains/Food Webs. Feeding Style. . Community Ecology. Community. = group of populations of different species living close enough to interact. Interspecific interactions. Can be positive (+), negative (-) or neutral (0). Includes:. 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…. Energy into the earth. Of 100% of earth’s energy, how much comes from the sun. Of all the sun energy, how much is taken up by photosynthesis on earth? . What happens to most of . the . sun’s . energy? . 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. Konstantinos G. Papadopoulos, . Efthymios. S. . Lytras. , Stylianos A. . Samios. , Marina N. . Despotidou. , . Georgios E. . Katsouras. , Alexandros D. . Dosis. , Nikos D. . Tsalas. 2. Definition of Trophic State. Left: Image from Wikimedia Commons of one of the earliest known depictions of a food web, by Victor . Summerhayes & Charles Elton (1923) for Bear Island, Norway. Right: Provenance of “A simplified food web for Northwest Atlantic” unknown . WHAT IS ZOOPLANKTON?. Zooplankton are . a type of heterotrophic . plankton.. R. ange . from microscopic organisms to large . species, . such as jellyfish. .. . Zooplankton are found within large bodies of . Photosynthesis and Sugar. Producers use the. e. nergy from. s. unlight to combine. c. arbon dioxide. a. nd water to make oxygen and a simple sugar called glucose. This process is called . photosynthesis. 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 (.