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BELLRINGER 9/14/15 Match the left column to the correct description to the right: Abiotic factorsLiving parts of the environment Biotic factorsGroup of organisms of the same species OrganismNonliving parts of the environment Population Living thing
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BELLRINGER 9/18/15 Define the terms and answer the question below: Immigration Emigration Why do animals immigrate or emigrate?
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Ecology Introduction Part 1
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Ecology: the study of the interactions of living organisms with one another and their environment Environment: the abiotic and biotic factors that act upon organisms
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Abiotic the nonliving parts of the environment including water, rocks, light, nutrients, soil, and temperature Climate – the average weather conditions for an environment (yearly/ monthly) Weather – the daily environmental conditions (daily)
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Biotic the living parts of the environment including bacteria, protists, fungi, plants, and animals
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Levels of Ecology Organism a living thing; anything that can carry out life processes independently
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Levels of Ecology Population A group of organisms of the same species that live in a specific geographical area Species – a group of organisms that are closely related and can mate a produce fertile offspring
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Levels of Ecology Community all of the populations of species that live in the same habitat and interact with each other
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Levels of Ecology Ecosystem a community of organisms and their abiotic environment
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Levels of Ecology Biome a large region characterized by a specific type of climate and certain types of plant and animal communities Climate patterns – the sunlight, wind, and water availability all help to define a biome
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Biomes – large regions characterized by specific type of climate and certain types of plant and animal communities
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Levels of Ecology Biosphere the part of the earth where life exists
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BELLRINGER 9/17/15 *Answer the questions below How can food and water limit population growth and survival? What are some other limiting factors you can think of? (at least 2)
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Population Ecology How individuals of the same species interact with other
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Population Same species, at the same time, in the same place, and reproducing
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Density Number of organisms in a given area
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Dispersion – pattern or organisms within an area Uniform – favorable environment or territorial species Random – no apparent reason or pattern Clumped – need for resources
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Demography Growth – by birth or immigration Decline – by death or emigration Related to LIMITING FACTORS
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Limiting factors Resources – food, water, space, mates, jobs, etc. Health conditions – crowding and diseaseCOMPETITION Predation Prey = organism killed and eaten by another organism Predator = organism that eats all or part of another organism after killing it CARRYING CAPACITY – largest population that an environment can support at any given time
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BELLRINGER 9/21/15 * Answer the questions below What are factors that living things can COMPETE for? Give one real life example of two living organisms that COOPERATE to survive (mutualism).
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Community Ecology How do populations interact with each other?
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COMPETITION (-,-) It happens because resources are in limited supply One species per niche NICHE = the place of function of a given organism within its environment
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PREDATION (+,-) Normal – predator kills and eats its prey Parasitism – a parasite harms another organism ADAPTATIONS For predators: claws, teeth, poisons, speed, and musculature For possible preys: long legs, speed, flight, horns, colorations, and sense of smell
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EXAMPLES OF ADAPTATIONS Camouflage – blending Warning coloration – bright colors Defensive chemicals – skunk spray Mimicry – animal “pretends” to be harmful
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MUTUALISM (+,+) Relationship that promotes coevolution – positive effect for each organism Organisms COOPERATE
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COMMENSALISM (+,0) ONE organism benefits, the other is UNAFFECTED
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BELLRINGER 9/22/15 * Use your electronic device Give an example of a predator that has developed adaptation behavior or “tool” to catch its prey (describe it)
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Toothpick Birds Instructions Each round is 30-seconds (total of 6 rounds) Use your “beak” of one hand only to feed (forefinger + thumb) Place your “insect” (toothpick) in your “crop” (cup) after each feeding Stop feeding when time is called You must eat at least 4 insects per round – if less, YOU DIE YELLOW insects are poisonous – if you eat it, YOU DIE
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BELLRINGER 9/23/15 Which do you think is most efficient for protection from predators: camouflage or mimicry? Why?
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Energy Flow & Trophic Levels
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Trophic Structure * Energy flows but matter is cycled
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Food ChainFood Web
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Ecological Succession Primary succession – starting from scratch Need pioneer species Pioneer -> grasses/bushes -> trees Climax community Secondary succession – soil already exists No need for pioneer species
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Ecosystem Trophic Levels Producers or Autotrophs (self-eater/feeder) Sunlight + inorganic matter -> organic energy (food) Start ALL food chains Consumers or Heterotrophs (other eater/feeder) Different levels (primary, secondary, tertiary, etc) Must eat other organisms to obtain energy Decomposers or Detritovores (feed on dead, organic matter – detritus) Take detritus and covert it back to inorganic matter
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Examples Producers Consumers Decomposers
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BELLRINGER 9/24/15 Match left column with correct description. ProducersEat other organisms to survive ConsumersModel showing possible feeding relationships DecomposersStart ALL food chains; produce their own food Food webFeed on detritus; nature’s recycling system
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BELLRINGER 9/25/15 Put the organisms in order of a food chain Mouse Peanut plant Eagle Snake
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EXTRA MATERIAL * Not used in class
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Biome diagram
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Aquatic Biomes
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Coastal & Ocean terms
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Coral Reefs of the World(purple areas) Rainforests of the oceans
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Fresh water terms
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Stream Headwaters
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Midstream
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Estuary
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Wetlands - Swamp
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Wetlands - Marsh
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