Module 10

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Author:
meme99
ID:
151846
Filename:
Module 10
Updated:
2012-05-03 23:51:49
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USU 1350
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Description:
USU 1350 Communities and Ecosystems
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  1. T/F Communities and Ecosystems are the network of Life.
    TRUE
  2. Definition of Community
    Biotic members in a natural area
  3. T/F Biotic Means Living
    True
  4. Definition of Ecosystem-
    Biotic and abiotic members and parts
  5. Examples of Community
    Plants and animals
  6. Examples of Ecosystems abiotic members:
    weather, water, mineral soil components, topography
  7. T/F Ecosystems are comprised of communities
    True
  8. T/F Forest Ecosystem is comprised of the plants and animal communities
    • TRUE- Soil microorganisms up to megaherbivors
    • -single celled plants up to towering trees
  9. Examples of abiotic parts of forest ecosystem:
    drainages, weassther patterns, lakes and rivers, aspects of the land (slopes) and the terrain type
  10. T/F- Ecosystems always stay the same
    FALSE- they are dynamic and constantly changing
  11. T/F- scale is not important in ecosystems
    FALSE- scale is important
  12. T/F Size is difficult to measure
    True
  13. T/F Boundaries are difficult to define
    True
  14. T/F Ecosystems are generally self-sustaining
    TRUE
  15. T/F Matter does not cycle in ecosystems
    FALSE- matter cycles in ecosystems
  16. T/F Energy powers matter cycling
    TRUE
  17. T/F- Matter occupies space and has mass
    TRUE
  18. Fact: MATTER IS THE ATOMS AND COMPOUNDS THAT MAKE UP UP PLANTS AND ANIMALS
    TRUE
  19. T/F- matter doesn't leave or enter a healthy ecosystem
    TRUE- it does NOT leave or enter. Stays the same.
  20. Define Engergy
    the capacity to do work
  21. T/F Gravity is the source of all past, present, and future energy on the Earth
    FALSE- the SUN is the source
  22. T/F- Energy is NOT cycled in an ecosystem, it is diminished as it moves matter around
    TRUE
  23. Matter and Energy in an Ecosystem
    Carnivores ? %
    Herbivores ?%
    Plants ? %
    • Carnivores 10 %
    • Herbivores 20%
    • Plants 70 %
  24. What does tropic mean?
    feeding
  25. What does biomass mean:
    living tissues
  26. t/f: in general, more complexity equals more stability
    TRUE: if one part of a complex web is removed it has less effect than if you remove one part of a simple web
  27. T/F each plant and animal species has a unique role in an ecosystem
    TRUE- this is called a NICHE
  28. T/F- niche is comprised of one demensions
    FALSE: it has many demensions
  29. T/F number of dimensions is unknown
    TRUE- niches are n-dimensional
  30. T/F Species survive even if they don't complete and don't adapt to the environment
    FALSE- they must compete and adapt
  31. T/F Many species have the exact same niche
    FALSE- no two species have exactly the same niche
  32. T/F groups of spsecies with similar ranges of tolerance form communities
    TRUE
  33. t/f For any environmental dimension, a given species has a range of tolerance
    TRUE
  34. what happens below the life line on a range of tolerance scale?
    the species die
  35. Fact: Individual line of range of tolerance scale, the species live but no healthy populations
    true
  36. Fact: the population line on the range of tolerance is where the species thrive and form popoulations
    TRUE
  37. T/F: Ranges for dimensions can be wide and some can be narrow
    TRUE
  38. T/F a generalist is when all ranges of tolerance are wide
    TRUE

    example- coyotes and sagebrush
  39. T/F a specialist is when all ranges of tolerane are narrow
    TRUE
  40. Management perspective on range of tolerance: what do they do?
    they transplant and reintroduce species
  41. Define ecological equivalents:
    species differ between communities but have simiilar morphological (form) and physiological (function) adaptations
  42. define succession:
    the sequential process of change in ecosystems
  43. Flow of succession:
    pioneer communities>climax community>disturbance> back to pioneer communities
  44. Pioneer communities have the following characteristics:
    • First step following disurbance
    • a turnover of species
    • lots of opportunistic species
  45. Climax communities are defined by:
    • final step following disurbance
    • turnover of individuals
    • reaches dynamic equalibrium
  46. Name the two types of succession
    Primary and Secondary
  47. Characteristics of Primary succession:
    • majority of life is removed
    • volcano, new island formed, mudslide
    • rare
  48. Characteristics of Secondary Succession
    • remnants of previous community exist
    • patchiness of fire
  49. T/F Engergy can neither be created nor destroyed- it can only be transfered
    TRUE
  50. What are th emost common forms of energy?
    Potential and connetic
  51. T/F: Energy and matter are the same thing
    TRUE
  52. Einstein's Energy Equation
    E=MC(squared)
  53. How quickly energy is released is the definition of:
    Power
  54. where do we get all of our energy from?
    Outerspace
  55. T/F gravity changes energy
    TRUE
  56. Name three types of dangerous rays:
    Gamma, x-rays, ultraviolet
  57. Infra-red rays give us _____ energy
    Heat
  58. Green plants get energy from ________________
    photosynthesis
  59. define non-renewable energy:
    energy is transferomed into a form that is no longer useful
  60. T/F Earth's magnetic field deflects high energy particles
    True
  61. Which rays have the most energy?
    Ultra-high-energy cosmic rays

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