Download ecology! - Midland ISD

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ECOLOGY!
By Sara Smith
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Population and Communities!
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Populations: inhabitants of a different down or region.
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Communities: A group of different species living in the same
place.
Ecosystems form through interactions of communities! Then
that ultimately makes up the biosphere!
Populations and Communities!
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Members of a population are dispersed in different ways
-Clumped, Random and Uniform.
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Community characteristics include…
-Physical appearance, species diversity, species abundance, and
niche structure.
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Ecological Niches!
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Niche: a particular area within a habitat occupied by an
organism and includes the function of that organism within an
ecological community.
Abiotic and biotic organisms are found in niches!
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Interactions with other species!
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A
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Commensalism
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Mutualism
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Parasitism
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Competition
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Predation
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Saprotropism (absorb soluble organic compounds)
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Keystone Species!
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Species that contribute to the diversity of life.
Examples: grizzly bears, sea stars, sea otters in kelp forests,
and prairie dogs.
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Species Diversity!
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When species adapt to where they live.
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For example, the different biomes that include the aquatic,
desert, grassland, coral reefs, and freshwater wetland.
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Biomes include the Taiga, Temperate Deciduous Forests,
Temperate Rain Forests, Tundra, Tropical Rain Forests,
Temperate Woodlands.
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Major Biomes
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Energy Flow!
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Photosynthesis and Cellular Respiration
6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O
Plants remove carbon dioxide into the atmosphere by the
chemical process of photosynthesis!
Cellular Respiration is basically the
Opposite of photosynthesis.
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For you readers
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A website with intricate detail over the basic ecology…
http://plato.stanford.edu/entries/ecology/
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Another website for that purpose…
http://www.ecology.com/
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Ecology video
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http://www.youtube.com/watch?v=izRvPaAWgyw
He explains it all a lot better than I do.
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Study Questions!
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What makes up an ecosystem?
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What three ways are methods in how populations are
dispersed?
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What kind of organisms are found in niches?
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What makes photosynthesis and cellular respiration
different?
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How do species adapt to their surroundings?