2.1 Energy Flow in Ecosystems

2.1 Energy Flow in Ecosystems

Energy Flow in Ecosystems (cont.) Producers are photosynthetic organisms (like plants) that produce carbohydrates (sugar). Consumers get their energy by feeding on producers or other consumers. Decomposers break-down wastes & dead organisms, through the process of biodegradation. Includes fungi, bacteria, some insects &

worms Methods to represent energy moving through ecosystems. 1. Food chains: show the flow of energy in an ecosystem. Each step is a trophic (or feeding) level Producers = 1st trophic level Primary consumers = 2nd trophic level Secondary consumers = 3rd trophic level Tertiary consumers = 4th trophic level

Consumers in a food chain can be classified as: Detrivores (decomposers) - obtain energy & nutrients from dead organisms & waste matter. they feed on every trophic level. Herbivores = primary consumers eat plants (producers) only This dung

beetle is a detrivore. Carnivores (or Omnivores) = secondary, tertiary, or quaternary consumers Secondary consumers eat primary producers Eg. Frog eating a grasshopper

Tertiary consumers eat secondary consumers also called top predators, top carnivores or top consumers Eg. Lions eating gazelle NOTE: Omnivores = consumers that eat both plants & animals Eg. include humans and bears Most organisms are part

of many food chains. 2. Food webs represent interconnected food chains. model the feeding relationships in an ecosystem Arrows in a food web represent the flow of energy & nutrients. Arrows go UP to the top

carnivore(s). This food web represents a terrestrial ecosystem that could be found in British Columbia. 3. Food pyramids (a.k.a. ecological pyramids): show the changes in available energy, biomass, or population size from one

trophic level to another The amount of life an ecosystem can contain is based on the bottom level of the pyramid. Only about 10% of energy is leftover and transferred to next level

Recently Viewed Presentations

  • panathenaea and dionysia compared

    panathenaea and dionysia compared

    city and festivals (panathenaea, dionysia) ch10 civ - grk 101. Παιδεύω, principle parts 1st 3 of 6) παιδεύω (present system) παιδεύσω (future act/middle system) ἐπαίδευσα (aorist [simple past] act/middle system)
  • Job Description Track Job Descriptions Job Description Track

    Job Description Track Job Descriptions Job Description Track

    Job Description Track™ Job Descriptions Job Description Track™ To provide a written record of job-related activities or requirements that employees perform on a regular basis. To allow employees to sign off and confirm an understanding of their job requirements.
  • FOIL What is a FOIL in literature? A

    FOIL What is a FOIL in literature? A

    Who is the Foil? Usually the foil contrasts the protagonist; however, this is not always the case. In the classic good-guy vs bad-guy scenario, both the hero and the villain can each be considered the other's foil, in that each...
  • Class 4  September 25 Introduction to Privacy and

    Class 4 September 25 Introduction to Privacy and

    Order, Rogers is entitled to compensation of $67.23, plus HST, for searching and disclosing the customer name and address information associated with the five time stamps in the Norwich Order (i.e., $35.00 x 115.25 minutes/ 60 minutes = $67.23). Voltage...
  • Potable water Water of an appropriate quality is

    Potable water Water of an appropriate quality is

    AQA GCSE Using resources 1. ... Life cycle assessment and recycling. Life cycle assessment. ... Soda-lime glass, made by heating sand, sodium carbonate and limestone. Borosilicate glass, made from sand and boron trioxide, melts at higher temperatures than.
  • Chapter 2: Shader Fundamentals - University of Kansas

    Chapter 2: Shader Fundamentals - University of Kansas

    Compiler Control - How Shaders are Compiled. #pragma optimize (on) or. #pragma optimize (off) Default: Optimization is enabled for shaders. Can only be issued outside of function definition.
  • INF 141 Latent Semantic Analysis and Indexing

    INF 141 Latent Semantic Analysis and Indexing

    Arial Tw Cen MT Wingdings Wingdings 2 Calibri Courier New Median 1_Median 2_Median 3_Median 4_Median 5_Median 6_Median 7_Median INF 212 Analysis of Prog. Langs Funktional Programming Outline Closures What are closures good for? Outline Continuations Remember Goto Continuations continued What...
  • Arcs Arcsand andChords Chords Warm Up Lesson Presentation

    Arcs Arcsand andChords Chords Warm Up Lesson Presentation

    An arcis an unbroken part of a circle consisting of two points called the endpoints and all the points on the circle between them. Minor arcs may be named by two points. Major arcs and semicircles must be named by...