Unit and Chapter pages- There are 10 total units, starting with Unit 0. Each consists of 2-3 chapters.
Each unit page should have sub-links to chapters (Ex: APES>Unit 0 >>Chapter 1)
Each chapter page should include
CHAPTER SUMMARY: This brief summary/reflection should be more than 5 sentences, less than 10, in your own words. Focus on what you took away from the chapter’s big ideas/concepts.
LINK TO TEXT: A link to the chapter pdf
CHAPTER FOLDER: A private link to your chapter subfolder (carefully set these permissions so that only you and Ms. Stewart have access to the folder and docs!). In this folder, you should have your:
chapter outline (Follow Chapter Outline Guidelines)
chapter vocabulary (optional, but helpful!)
chapter review questions (optional, but helpful!)
labs or activities from the chapter.
Useful Media: Videos, articles, etc.
Study Artifacts: Links to any study materials that you found helpful when preparing for the chapter test.
Nearly all energy in ecosystems comes from the sun, and producers use photosynthesis to store energy and build structures. Producers release oxygen into the air and store carbon in their tissues. The amount of energy available in an ecosystem determines how much life the ecosystem can support. To quantify the rate of capturing energy in an ecosystem, environmental scientists measure the ecosystem’s productivity. The term gross indicates the total amount of energy captured by producers. A common approach to measuring GPP is to first measure the production of CO2 in the dark.
Most solar energy is lost from the ecosystem as heat that returns to the atmosphere. Some of the lost energy consists of wavelengths of light that producers cannot absorb. In aquatic ecosystems, the low efficiency of converting solar energy to plants and algal tissues is further impeded by the water absorbing the various wavelengths of sunlight. In response to different intensities of light energy, algae that live at greater depths have evolves to conduct photosynthesis more efficiently, which includes using additional energy-capturing pigments other than chlorophyll.
Producers: Plants, algae, and some bacteria that use the Sun’s energy to produce usable forms of energy, such as sugars. Also known as autotrophs.
Cellular respiration: The process by which cells unlock the energy of chemical compounds.
Anaerobic respiration: The process by which cells convert glucose into energy in the absence of oxygen.
Primary productivity: The rate of converting solar energy into organic compounds over a period of time.
Gross primary productivity: The total amount of solar energy that producers in an ecosystem capture via photosynthesis over a given amount of time.
Net primary productivity: The energy captured by producers in an ecosystem minus the energy producers respire.