Ecology
Download
1 / 29

Ecology - PowerPoint PPT Presentation


  • 106 Views
  • Uploaded on

Ecology. The study of interactions between organisms and their environments. Biotic Factors. Bio = life Biotic factors – All living organisms in a biosphere Examples: Plants, Animals. Abiotic Factors. Nonliving factors in an environment Examples: Air currents Temperature Moisture Light

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Ecology' - hakeem-garrett


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Ecology

Ecology

The study of interactions between organisms and their environments.


Biotic factors
Biotic Factors

  • Bio = life

  • Biotic factors – All living organisms in a biosphere

  • Examples: Plants, Animals


Abiotic factors
Abiotic Factors

  • Nonliving factors in an environment

  • Examples:

    • Air currents

    • Temperature

    • Moisture

    • Light

    • Soil


Ecological organization of life
Ecological Organization of Life

Biosphere

Ecosystems

Communities

Populations

Organisms


Organism population
Organism Population

  • An individual form of life that is capable of carrying out the life processes.

  • A group of individuals of the same species is a population.


Community ecosystem
Community Ecosystem

  • Populations of different species interact to form communities.

  • A community and its abiotic environment are an ecosystem


Biosphere
Biosphere

  • The living organisms and their environment composing the biosphere.


Feeding relationships
Feeding Relationships

  • Autotroph: An organism that synthesizes its energy from photosynthesis.

  • Heterotroph: An organism that cannot synthesize its own food.

    • Carnivores: Meat eaters

    • Omnivores: Meat and plant eaters

    • Herbivores: Plant eaters

    • Decomposers: Breakdown dead and decaying organisms.


Trophic relationships
Trophic Relationships

  • Autotrophs

  • 1st level consumers (herbivores)

  • 2nd level consumers

  • 3rd level consumers

  • 4th level consumers

    (top predators)


Food chain
Food Chain

The transfer of food energy from one organism to another in an ecological community.

A food chain begins with a producer.


Food web a series of interrelated food chains in an ecosystem
Food WebA series of interrelated food chains in an ecosystem.


Rule of 10
RULE OF 10

  • Only 10% of energy is transferred from one trophic level to the next.

  • Example:

    • It takes 100 kgs of plant materials (producers) to support 10 kgs of herbivores

    • It takes 10 kgs of herbivores

      to support 1 kg of

      1st level predator







Water cycle
Water Cycle

  • Evaporation

  • Transpiration

  • Precipitation

  • Runoff

  • Groundwater


Carbon cycle
Carbon Cycle

  • Combustion

  • Photosynthesis

  • Respiration

  • Decomposition

  • Fossil fuels


Nitrogen cycle
Nitrogen Cycle

  • Atmospheric nitrogen

  • Runoff

  • Fertilizers

  • Decomposition

  • Nitrogen fixing

  • Synthesis of

    amino acids


Niche vs habitat
Niche vs. Habitat

  • The role and location of an organism within an ecological community.

  • The environment where a plant or animal lives.


Biomes
Biomes

A large community of plants and animals that occupies a distinct region.

Biomes can be:

Terrestrial

Aquatic









ad