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Ecological pyramid

Chapter 3 Notes

Subject: 
Environmental Science
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Biology
Ecology
Systems ecology
Primary production
Ecological efficiency
Food web
Ecological pyramid
Trophic level
ecosystem
Terrestrial ecosystem
Photosynthesis
Nutrient cycle
Environment

Chapter 3 Notes Ecosystem Boundaries Biotic and abiotic components of an ecosystem provide the boundaries that separates them from one another Some have a well-defined boundaries: Like a cave Scientist might define a terrestrial ecosystem as the range of a particular species of interest Ecosystems occur in a wide range of sizes Ecosystem Process Each ecosystem interacts with surrounding ecosystems Change in ONE ecosystem can affect the global environment Photosynthesis and Respiration Nearly all of the energy that powers ecosystems comes from the sun Plants, algae and other organisms have the ability to convert the suns solar energy to usable from of energy, these are called producers/autotrophs

Chapter 3 section 3 Powerpoint

Subject: 
Biology
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Biology
Ecology
Systems ecology
Aquatic ecology
Soil biology
Ecological pyramid
Food web
Trophic level
Energy flow
Nutrient cycle
Food chain
Detritivore
Environment

Lesson Overview 3.3 Energy Flow in Ecosystems Lesson Overview Energy Flow in Ecosystems THINK ABOUT IT What happens to energy stored in body tissues when one organism eats another? Energy moves from the ?eaten? to the ?eater.? Where it goes from there depends on who eats whom! Lesson Overview Energy Flow in Ecosystems Food Chains and Food Webs How does energy flow through ecosystems? Energy flows through an ecosystem in a one-way stream, from primary producers to various consumers. Lesson Overview Energy Flow in Ecosystems Food Chains A food chain is a series of steps in which organisms transfer energy by eating and being eaten. Food chains can vary in length. An example from the Everglades is shown. Lesson Overview Energy Flow in Ecosystems Food Chains

Ecology Chapter 3 Worksheet Key

Subject: 
Biology
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Biology
Ecology
Food web
Trophic level
Ecological pyramid
Consumer
Autotroph
Energy flow
Food chain
Predation
ecosystem
Plankton
Environment

Bio I Unit 7: Ecology Name KEY 3.1 What Is Ecology? Studying Our Living Planet 1. What is ecology? It is the scientific study of interactions among organisms and between organism and their environment. 2. What does the biosphere contain? It contains all the organisms and physical environments of the Earth. 3. How are human economics and ecology linked? Economics has to do with human ?houses? and interactions based on money and trade. Ecological interactions have to do with nature?s ?houses? and are based on energy and nutrients. Humans depend on ecological processes to provide nutrients that can be bought or traded. 4. Label each level of organization on the diagram.

CH 54 Bio Notes

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Biology
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Biology
Ecology
Primary production
Biomass
Ecological efficiency
Trophic level
Solar Energy
Productivity
Ecological pyramid
Ecosystem ecology
Environment

Primary productivity aka BIOMASS B/c some ecosystems are better at converting solar energy then others, we calc PP to indicate how efficient a partic ecosys is @ convert solar energy *Expressed as a Biomass/Rate-- The dry mass of vegetation produced per unit time (g/m2/yr) Aka BIOMASS The amt of light energy converted to chemical energy in a given amt of time Gross (Total) Primary Productivity (GPP) Not all of all the chemical energy produced is available to be passed on to primary consumers Autotrophs (primary producers) use some of energy themselves for cellular respiration Total primary productivity of an autroph Total amt of energy fixed by plants Net primary productivity (NPP) [GPP] ? [Energy Used by Autotrophs] = [NPP] Expressed as biomass per square meter/yr
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