Ecology Unit

  1. Ecosystem
    all the interacting parts of a biological community and its environment
  2. Sustainable Ecosystem
    ecosystem that is capable of withstanding pressure and giving support to a variety of organisms
  3. Biotic
    The living parts of an ecosystem
  4. Abiotic
    The nonliving parts of an ecosystem
  5. Lithosphere
    The hard part of the earths surface
  6. Hydrosphere
    all the water found on earth, including lakes, oceans, and groundwater
  7. Atmosphere
    The layer of gases above earths surface
  8. Biosphere
    The regions of earth were living organisms exist
  9. Nutrients
    A chemical that is essential to living things and is cycled through ecosystems
  10. Aquatic Ecosystem
    an ecosystem that is land-based
  11. Terrestrial Ecosystem
    an ecosystem that is water based, either freshwater or saltwater
  12. Eutrophication
    A process in which nutrient levels in aquatic ecosystems increase leading to an increase in the populations of primary producers
  13. Photosynthesis
    A process that changes solar energy into chemical energy
  14. Trophic Level
    A category of organisms that is defined by how the organisms gain their energy
  15. Biomass
    The total mass of living organisms in a defined group or area
  16. Trophic Efficiency
    A measure of the amount of energy or biomass transferred from one trophic level to the next higher trophic level
  17. Bioaccumulation
    A process in which materials, especially toxins, are ingested by an organism at a rate greater than they are eliminated
  18. Cellular Respiration
    A process that releases energy from organic molecules especially carbohydrates in the presence of oxygen
  19. Fermentation
    A process that releases energy from organic molecules especially carbohydrates in the absence of oxygen
  20. Greenhouse Gases
    atmospheric gases that prevent heat from leaving the atmosphere thus increasing the temperature of the atmosphere
  21. Greenhouse Effect
    The warming of earth as a result of greenhouse gases which trap some of the energy that would otherwise leave earth
  22. Acid Precipitation
    rain snow or fog that is unnaturally acidic due to gases in the atmosphere that react with water to form acid
  23. Population
    all the individuals of a species that occupy a particular geographic area at a certain time
  24. Exponential Growth
    Accelerating growth that produces a J shaped curve when the population is graphed against time
  25. Limiting Factors
    A factor that limits the growth distribution or amount of a population in an ecosystem
  26. Carrying Capacity
    The size of a population that can be supported indefinitely by the available resources and services of an ecosystem
  27. Equilibrium
    The balance between opposing forces
  28. Urban Sprawl
    The growth of relatively low density development on the edges of urban areas
  29. Ecological Niche
    The way that an organism occupies a position in an ecosystem including all the necessary biotic and abiotic factors
  30. Bog
    A type of wetland in which the water is acidic and low in nutrients
  31. Predator
    an organism that kills and consumes other organisms
  32. Prey
    an organism that is eaten as food by a predator
  33. Mutualism
    a symbiotic relationship between two species in which both species benefit from the relationship
  34. Parasite
    an organism whose niche is dependent on a close association with a larger host organism
  35. Sustainable use
    use that does not lead to long-term depletion of a resource or affect the diversity of ecosystem from which the resource is obtained
  36. Doubling Time
    The period of time that is required for a population to double in size
  37. Ecological Footprint
    A measure of the impact of an individual or a population on the environment in terms of energy consumption land use and waste production
  38. Unsustainable
    A pattern of activity that leads to a decline in the function of an ecosystem
  39. Sustainability
    use of earths resources including land and water at levels that can continue forever
  40. Ecosystem Services
    The benefits experienced by organisms including humans that are provided by sustainable ecosystems
  41. Destertification
    The change of non-desert land into a desert; desertification may result from climate change and unsustainable farming or water use
  42. Watershed
    an area of land over which the run off drains into a body of water
  43. Connectivity
    The collection of links and relationships between ecosystems that are separated geographically
  44. Ecotourism
    A form of tourism that is sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems
  45. Biodiveristy
    The number and variety of life forms including species found within a specific region as well as all the number the number and variety of ecosystems within and beyond that region
  46. Protect
    to guard legally from harm a species that is listed as endangered threatened or of special concern
  47. Biodiversity Hotspot
    A place where there is an exceptionally large number of species in a relatively small area
  48. Community
    all the populations of the different species that interact in a specific area or ecosystem
  49. Dominant Species
    species that are so abundant that they have the biggest biomass of any community member
  50. Keystone Species
    a species that can greatly affect population numbers and the health of an ecosystem
  51. Captive Breeding
    The breeding of rare or endangered wildlife in controlled settings to increase the population size
  52. Ecosystem Engineer
    a species that causes such dramatic changes to landscapes that it creates a new ecosystem
  53. Succession
    The series of changes in an ecosystem that occurs over time following a disturbance
  54. Habitat Loss
    The destruction of habitats which usually results from human activities
  55. Deforestation
    The practice of clearing forests for logging or other human uses and never replanting them
  56. Alien Species
    a species that is accidentally or deliberately introduced into a new location
  57. Invasive Species
    A species that can take over the habitat of native species
  58. Overexploitation
    The use or extraction of a resource until it is depleted
  59. Extinction
    The death of all the individuals of a species
  60. Biodiversity Crisis
    The current accelerated rate of extinctions
  61. Stewardship
    The active assumption responsibility for the welfare of the environment
  62. Restoration Ecology
    The renewal of degraded or destroyed ecosystems through active human intervention
  63. Reforestation
    The regrowth of a forest either through natural processes or through the planting of seeds or trees in an area where forest was cut down
  64. Biocontrol
    The use of a species to control the population growth or spread of an undesirable species
  65. Bioremediation
    The use of living organisms to clean up contaminated areas naturally
  66. Bioaugmentation
    The use of organisms to add essential nutrients to depleted soils
Card Set
Ecology Unit
grade 9 ecology