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          • Types of Errors - more notes.
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Assigned study guide 
(as alternative  to   clegg  reading   and   Essential    biology   packets  -  some   of  these   will  be  completed  in  class -  see  netclassroom)
5.1  - pp   214-216,  219-225
5.3  - pp   232-235
5.2  -  pp  226-231


Combined reading and review assignment:  Biozone pp 214, 223-225, 228-231 as homework, due Thursday5/22 in class.  
pp 215-216. 219-222, 232-235 are classwork assignments, completed in school
SUPPORT MATERIAL FOR UNIT (ASSIGNED HOMEWORK, CLASS DISCUSSION) - GOOD REVIEW RESOURCE FOR THIS UNIT IS AVAILABLE ON AN ADJACENT TAB, "ECOLOGY DBQ PRACTICE"
Topic 5.1 powerpoint (S Taylor) CJ Clegg text pp. 137-147, A Allott 
        review guide pp. 40-43 
Topic 5.3 powerpoint (S Taylor) CJ Clegg text pp. 154-156, A Allott 
        review guide pp. 36
Topic 5.2 powerpoint (S Taylor) CJ Clegg text pp. 148-153, A Allott 
        review guide pp. 44-45 

 
ESSENTIAL BIOLOGY LEARNING GUIDES (ALTERNATIVE HOMEWORK, REVIEW)
Topic 5.1 Communities and Ecosystems
Topic 5.3 Populations

Topic 5.2 Greenhouse Effect

5.1
COMMUNITIES AND ECOSYTEMS - WALKING SCAVENGER HUNT - 3 PARTS - FIND THE EXAMPLES OF THE ECOLOGICAL CONCEPTS, FIND THE EXAMPLES OF THE EMBEDDED REVIEW CONCEPTS AND CLEAN UP WHAT YOU FIND ALONG THE WAY.
A few important distinctions

Community vs. Population:

Here the problem lies in the confusion with the way these terms are used in everyday communication.  We tend to think of a population on a grad scale and a community in a more local sense.  However, in ecology, community is more diverse than a population.  Population = collection of organisms of the same species,  living in the same area at the same time.  Community = collection of populations, also living in the same area at the same time

Decomposer vs. Detritivore vs. Saprotroph:


(Consulting many different sources on this, these terms are used in different hierarchies by different authorities.  We are going to go with that consistent with texts authored by IB associates.)

Required terms are detritivore and saprotroph - detritivore ingests non-living organic matter, saprotroph lives on or in non-living organic matter, secretes digestive enzymes into it and absorbs the products of digestion.  For our purposes, both of these decompose dead organic matter into smaller compounds, including carbon compounds, which makes them critical to the carbon cycle (see figure and animation below).
Picture
This is made a bit more complicated (and more interesting) by the observation that many wood-eating/decomposing insects actually accomplish this feat by working together (symbiotically) with protozoans and bacteria in their gut. More on this in the lab...

Picture
Picture
click on the image to open animation
Trophic Level Numbering:

This is based upon energy (i.e, calories) flow from "eatee" to "eater," so the first trophic level is always the producers/autotrophs (generally photosynthesis, but there are other forms of energy fixation, such as chemosynthesis, which occurs in ecosystems lacking light energy).  The second trophic level is the primary consumers, which is where the confusion can exist.

5.3
POPULATIONS - GROWTH PROFILES
Generalized Growth Curves
Picture
World Human Population Projection - 2100
Picture
World population from 1800 to 2100, based on UN 2004 projections (red, orange, green) and US Census Bureau historical estimates (black).

5.2
CLIMATE CHANGE PRESENTATION - FROM NATIONAL ACADEMY OF SCIENCES

ECOLOGY TOK MOMENT...WHAT ABOUT ENDANGERED CULTURES?  AS YOU WATCH, THINK ABOUT THE WAY THAT WADE DAVIS USES TERMS FROM TRADITIONAL ECOLOGY IN THE CONTEXT OF ANTHROPOLOGY.  HOW DOES THIS MESSAGE LAYER OVER THE DEBATE BETWEEN ENVIRONMENTALISM AND DEVELOPMENT ADVOCATES?
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  • Home
  • SL Bio/Bio 2
    • SL/HL test review
    • SL Bio Blog/Review Discussion Site
    • Name that Sound
    • SL Bio - Topics >
      • Cells >
        • Surface Area/Volume Lab >
          • Types of Errors - more notes.
        • Processing Microscope Data
        • Soap Bubble Membranes
        • Plasmolysis Lab
        • Surface Area/Volume LabHL16 >
          • Types of Errors - more notes.
        • Cell Cycle Timing Lab
      • Biochemistry >
        • Enzyme Lab
        • Photosynthesis Lab
      • Genetics
      • Evolution
      • Ecology SL/Bio2
      • Physiology >
        • Sheep Heart dissection
        • Sheep Brain Dissection
      • SL Option A Neurobiology
  • SL Bio/Bio 2 (pre-2015 exams)
    • SL Bio - Topics >
      • Evolution >
        • Natural Selection Web Activities
        • Paper Worm Simulation - Data Collection and Processing
        • Coacervate Lab
        • Hominid Evolution - Skull Lab
      • Classification
      • Biochemistry >
        • Surface Tension Lab
        • Molecules of Life - Modeling Activity
        • Jmol molecule visualizations
        • Playdough and Toobers!
        • Enzyme Lab
      • SL Genetics >
        • Sockosomes/Chromosocks
      • Biotechnology >
        • DNA gel
        • Bacterial transformation lab
      • Physiology >
        • Digestion
        • Circulation/Gas Exchange >
          • Sheep Heart dissection
        • Nervous system
        • Nutrition - Option A
        • Defense Against Disease
        • Reproduction
      • Ecology >
        • Ecology DBQ practice
        • Population Growth Simulation
        • Emerging Disease Webquest
  • HL BIo Year 1 (pre-2015 exams)
    • Year 1 - Topics >
      • Cells >
        • Processing Microscope Data
        • Surface Area/Volume Lab >
          • Types of Errors - more notes.
        • Plasmolysis Lab
        • Cell Cycle Timing Lab
      • Biochemistry >
        • Surface Tension Lab
        • Molecules of Life - Modeling Activity
        • Jmol molecule visualizations
        • Playdough and Toobers!
        • Race for the Double Helix movie
        • Extraction
      • Metabolism >
        • Enzyme Lab
        • Photosynthesis/Respiration Lab
      • Genetics >
        • Sockosomes/Chromosocks
        • Corn genetics
        • Make a Face
      • Biotechnology >
        • DNA gel
        • Bacterial transformation lab
      • Ecology >
        • Ecology DBQ practice
        • Emerging Disease Webquest
        • Symbiosis in Termites
        • Population Growth Simulation
    • MSON Bioethics >
      • Ethics in Scientific Research
      • Bioethics Films
  • HL Bio Year 1
    • Year One Blog/Review Discussion SIte
    • Year 1 - Topics >
      • EvolutionHL2016
      • CellsHL2016 >
        • Cells: Class Flip Videos
        • Processing Microscope Data HL16
  • HL Bio Year 2
    • SL/HL test review
    • Year Two Blog/Review Discussion Site
    • Ecology Summer Work
    • Year 2 - Topics >
      • Plants
      • Biotechnology_ >
        • DNA gel_
        • Bacterial transformation lab_
        • Microarray
        • Natural Cloning
      • Physiology >
        • Sheep Heart dissection
        • Kidney Dissection
        • Sheep Brain Dissection
        • Chicken Wing Dissection
        • Sea Urchin Embryology
  • HL Bio Year 2 (pre-2015 exam)
    • Year 2 - Topics >
      • Evolution >
        • Natural Selection Web Activities
        • Paper Worm Simulation - Data Collection and Processing
        • Coacervate Lab
        • Hominid Evolution - Skull Lab
      • Phylogeny >
        • Constructing Cladograms
      • Plants >
        • Comparative look at animal developmental switches
        • Plant Microscope exercise
        • Plant Hormone Lab
        • Transpiration Lab
        • Plants and Micrographic Art
        • Plants and Human Art
      • Neurobiology >
        • Preview Topics
        • Neuron Action Potential Simulation
        • Connectome
        • Sheep Brain Dissection
        • Cow Eye Dissection
        • Invertebrate Behavior Lab
        • Altered Reality
        • Human Behavior Lab
      • Physiology >
        • Digestion Demos
        • Sheep Heart dissection
        • Blood typing
        • Kidney Dissection
        • AIDS Global Awareness
        • Virtual ELISA
        • Film - Politics, People and Science of AIDS
        • Chicken Wing Dissection
        • Sea Urchin Embryology
      • Review Project >
        • Review assignments, written by HL students
        • Web 2.0 Tools
  • IB Connections
    • TOK Connections >
      • Natural Sciences - TOK
    • MYP reference site
    • Extended Essay in Biology
    • Group 4 Project
    • Internal Assessment - 1st and 2nd year >
      • Advice on Internal Assessment
      • Uncertainty in calculations
      • t test/TI 83/excel
      • tips on mac excel graphs
      • Notes from IB worldwide report
      • Lab photo album
    • Advice for IB Papers >
      • Advice on IB Examinations
    • IB Learner Profile - How does HL Bio fit in?
  • Resources
    • for our SL friends
    • BioNinja
    • iBiology
    • Click4biology
    • Biozone Weblinks
    • IB Biology video review
    • Smullen Powerpoint
    • Wapole text
    • IB Guides
    • Recommended biology tutorials (besides IB)
    • Practice Tests/Exam Dates/Review Materials >
      • Review assignments, written by HL students
      • Knowledge audits
      • Biology Narratives - Review Activity
      • Organizational review assignment
      • Year 1 Final Review
      • Quizlets and Other Shared Reviews
  • Clubs and Committees
    • Science Olympiad >
      • 2012 Science Olympiad Team in action
      • Photos from the 2013 Olympiad
    • Bioethics Bowl >
      • Villanova Bioethics Competition >
        • Team Pictures - 2012
      • Peace and Ecology Committee
  • Biotechnology