ecology – honors biology

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Ecology Honors Biology. 2010. Hierarchy of Organization. Biosphere : combined portions of the planet in which all life exists land, water & atmosphere Biome: group of ecosystems with same climate and similar dominant communities - PowerPoint PPT Presentation

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  • Ecology Honors Biology2010

  • Hierarchy of OrganizationBiosphere: combined portions of the planet in which all life exists land, water & atmosphereBiome: group of ecosystems with same climate and similar dominant communitiesEcosystem: collection of all organisms in a particular place together with physical environmentCommunity: Assemblages of different populations living in same areaPopulation: group of individuals belonging to same species living in the same area: (Species) Group of organisms that can breed together.

  • Energy flowEnergy powers life processesUltimate sourceNuclear fusion from sun

  • Flow of Energy Food ChainProducers/AutotrophpsPrimary consumer,Heterotroph/HerbivoreSecondary consumerCarnivore/Omnivore

  • Nutrients Recycle

  • 10% transfer from one trophic level to nextEnergy Pyramid

  • Biomass Pyramid

  • Numbers pyramid

  • What is a species niche?Place on the food webTypes of food an organism eats, how it obtains the foodAbiotic factors needed to survive: sunlight, water, temperatureWhen and how it reproducesNo two species can share the same exact niche competitive exclusion principle

  • What is a species niche?Place on the food webTypes of food an organism eats, how it obtains the foodAbiotic factors needed to survive: sunlight, water, temperatureWhen and how it reproducesNo two species can share the same exact niche competitive exclusion principle

  • What is happening to the population of one species of beetles when forced to share the same niche as another species? Two closely related species of flour beetles grown together and forced to use same exact resources:

  • Define the following terms:SymbiosisMutualismCommensalismParasitismPredationCompetition

  • Common dog tick: What relationship?

  • Barnacles on whale tail: What relationship?

  • What relationship?

  • What relationship?

  • Carbon CycleHow does Photosynthesis cycle carbon into living biomass?How does Respiration cycle carbon into the atmosphere?What are geological sources of carbon?How does burning of some of #3 add carbon to the atmosphere?

  • Nitrogen cycleWhat three processes are bacteria involved in getting nitrogen from the atmosphere into a form usable by plants?What form must nitrogen be in to be usable by plants?How is nitrogen cycled from the soil back into the atmosphere?

  • Water CycleWhat role do plants play in the cycling of water?How does water that enters the soil return to atmospheric water cycling?How would increasing air temperatures affect the water cycle?

  • Ecological SuccessionWhat is the difference between primary and secondary succession?How are new plants/animals able to colonize the area?What are pioneer species?What adaptations do shade plants have in a forest ecosystem?

  • Environmental ConcernsBiomagnification of pollutantsGlobal warmingOzone depletionHabitat destructionInvasive Species

  • BiomagnificationPersistant toxins Mercury, TCDDPesticides -DDTsComplete Biomagnification WS

  • High mercury levels in sushi

  • Global WarmingRise in global temperature due to human activity

  • Causes of Global Warming:Greenhouse gases: carbon dioxide, methane, nitrous oxideAbsorbs heat, prevents sunlight from radiating back into space

  • Ozone DepletionThinning of ozone layer (O3) at poles holes in ozone layerOzone layer absorbs harmful UVB raysIncrease in skin cancer?Cause: Chlorofluorocarbons (CFCs) chemically reacts with ozone

  • Habitat DestructionMain cause of loss in species diversity/ Main cause of extinction

  • Invasive SpeciesNUTRIA