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Habitat & Niche. Habitat is the place a plant or animal lives Niche is an organism’s total way of life. The Nonliving Environment. Abiotic factors - the nonliving parts of an organism’s environment. Examples include air currents, temperature, moisture, light, and soil.
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Habitat & Niche • Habitat is the place a plant or animal lives • Niche is an organism’s total way of life
The Nonliving Environment • Abiotic factors- the nonliving parts of an organism’s environment. • Examples include air currents, temperature, moisture, light, and soil. • Abiotic factors affect an organism’s life.
The Living Environment • Biotic factors- all the living organisms that inhabit an environment. • All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection.
Ecology Core and Ecology Option http://www.nodvin.net/snhu/SCI219/demos/Chapter_4/index.html
Ecosystems and Energy Interactions Objectives • Describe what is meant by a food chain, giving three examples, each with at least three linkages (four organisms) (2) • Describe what is meant by a food web (2) • Deduce the trophic level of organisms in food chain and a food web (3) • Construct a food web containing up to 10 organisms, using appropriate information. (3) • State that light is the initial energy source for almost all communities. (1) • Explain the energy flow in a food chain. (3) • State that energy transformations are never 100% efficient (1) • Explain reasons for the shape of pyramids of energy. (3) • Explain that energy enters and leaves ecosystems, but nutrients must be recycled. (3) • State that saprotrophic bacteria and fungi (decomposers) recycle nutrients. (1) • Define species, habitat, population, community, ecosystem, and ecology. (1) • autotroph and heterotroph, consumers, detritivores and saprotroph,trophic level (1
Construct a pyramid of energy, given appropriate information. (3) • Outline the changes in species diversity and production during primary succession. (2) • Explain the effects of living organisms on the abiotic environment with reference to the changes occurring during primary succession. (3) • Explain how rainfall and temperature affect the distribution of biomes. (3) • Outline the characteristics of six major biomes. (2) • gross production, net production and biomass. (1)primary and secondary succession using an example of each. (2)biome and biosphere. (2)
Read this articles and generate a food web.http://ehp.niehs.nih.gov/members/2004/112-8/focus.html
Ecological Pyramids Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level May be: Energy Pyramid Biomass Pyramid Pyramid of Numbers
Another way of showing the transfer of energy in an ecosystem is theENERGY PYRAMIDUnit: KJ/Meter square/Year
Energy Pyramids Show • Amount of available energy decreases for higher consumers • Amount of available energy decreases down the food chain • It takes a large number of producers to support a small number of primary consumers • It takes a large number of primary consumers to support a small number of secondary consumers
http://www.nodvin.net/snhu/SCI219/demos/Chapter_4/index.html
