UNIT 1: ECOLOGY EBR.8.B.1: EXAMPLES OF BIOTIC AND ABIOTIC FACTORS Biotic: Living things Examples: Plants Animals Insects Bacteria Etc. Abiotic: Non-living things Examples: Rocks Soil Sunlight Water Etc The root word ‘bio’ means life The prefix ‘a’ means without EBR.8.B.2: COMPARE AND CONTRAST THE CHARACTERISTICS OF BIOMES BIOMES: TROPICAL RAINFOREST Greatest biodiversity of any biome Threatened by habitat destruction Receives the most rain Abiotic Factors: Hot and wet year-round Nutrient poor soil *Picture the Amazon BIOMES: TROPICAL RAINFOREST Animal Adaptations: Specialized to eat specific things Bright colors warn of danger Plant Thin Adaptations: bark to let water escape Leaves with drip tip to allow excess water to drip off BIOMES: TEMPERATE/DECIDUOUS FOREST Biome we live in Abiotic Factors: Distinct seasons: hot summers, cold winters Nutrient rich soil BIOMES: TEMPERATE/DECIDUOUS FOREST Animal Adaptations: Hibernate during winter Store food for winter Plant Adaptations: Trees shed leaves to conserve water Water storage tissues BIOMES: SAVANNA Abiotic Warm Factors: year-round with seasonal rains Compact soil Frequent fires (from lightning) *Picture Africa BIOMES: SAVANNA Animal Adaptations: Long legs for migration Animals burrow underground for safety Plant Adaptations: Long tap roots to get ground water Thick bark to resist fire BIOMES: DESERT Least biodiversity Least rainfall Abiotic Factors: Highly variable temperatures (warm day/cold night) and very little rainfall Soil rich in minerals; poor in organic matter BIOMES: DESERT Animal Adaptations: Nocturnal Get Plant water from eating seeds Adaptations: Store water in leaves and stems Long root system to get water BIOMES: TAIGA Abiotic Factors: Cold winters; short mild summers Moderate rainfall Nutrient poor soil *Picture Canada or Alaska BIOMES: TAIGA Animal Adaptations: Protective layer of fat Wide paws that work like snowshoes Plant Adaptations: Needle shaped leaves to conserve water Evergreen to photosynthesize as soon as temp. increases BIOMES: TUNDRA Least biodiversity Coldest biome Abiotic Factors: Strong winds; low rainfall; long, cold, dark winters Soil is permafrost *Picture northern Canada or Greenland BIOMES: TUNDRA Animal Adaptations: Thick fur coats Small size Plant Adaptations: Grow small and close to the ground Dark in color to absorb more heat BIOMES: TEMPERATE GRASSLAND Abiotic Factors: Hot summers, cold winters and moderate rainfall Fertile soils Frequent fires *Picture Kansas BIOMES: TEMPERATE GRASSLAND Animal Adaptations: Digestive systems specifically designed to feed on grass Coloring allows them to blend in or camouflage Plant Adaptations: Deep roots to absorb moisture Roots withstand fire to re-sprout quickly Identify which biome goes with which number on the graph. • Grassland / Savanna • Tundra • Temperate / Deciduous Forests • Desert • Taiga • Tropical Rainforest Answers: 1. Tropical Rainforest 2. Temperate / Deciduous Forests 3. Grassland / Savanna 4. Desert 5. Taiga 6. Tundra Which biome has the most biodiversity? Which biome has the least biodiversity? Which biome(s) get the least amount of rainfall? Which biome gets the most rainfall? EBR.8.B.3: DIAGRAM THE CARBON, NITROGEN, PHOSPHATE, AND WATER CYCLES IN AN ECOSYSTEM CARBON CYCLE CARBON CYCLE CONT. Moves carbon between land, water, atmosphere, and organisms Enters atmosphere through: Respiration (breathing) Combustion (burning fossil fuels) Leaves atmosphere through: Photosynthesis decay Stored: In organisms As fossil fuels In water PHOSPHATE CYCLE PHOSPHATE CYCLE CONT. Moves phosphate through land, water, and organisms Only cycle that does NOT enter atmosphere Moves via: Water run-off Food eaten Decomposition of organisms Stored in: Rocks Organisms Soil Water WATER CYCLE WATER CYCLE CONT. Moves water through atmosphere, land, organisms, and bodies of water Enters atmosphere through: Transpiration Evaporation Leaves atmosphere though: Precipitation Stored: In bodies of water Ground water In organisms NITROGEN CYCLE: NITROGEN CYCLE CONT. Moves nitrogen though atmosphere, land, water, and organisms Nitrogen is the only cycle requiring bacteria to change its form Moves via: Denitrification Nitrogen fixation Decomposition Eating food Excreting wastes Stored: In soil In organisms In atmosphere EBR.8.B.4: ANALYZE AN ECOSYSTEM’S ENERGY FLOW THROUGH FOOD CHAINS, FOOD WEBS, AND ENERGY PYRAMIDS ECOLOGICAL/ENERGY PYRAMIDS Show larger amount of energy at base Each level up has less energy 10% of energy moves up each level 0.1% Energy 1% Energy 10% Energy 100% Energy FOOD CHAINS Simple way to show energy flow Arrows show where energy goes Quaternary Consumer Tertiary Consumer Secondary Consumer Primary Consumer Producer Complex, FOOD WEBS more realistic picture of energy flow Arrows show where energy goes EBR.8.B.5: IDENTIFY AND PREDICT THE FACTORS THAT CONTROL POPULATION, INCLUDING: PREDATION, COMPETITION, CROWDING, WATER, NUTRIENTS, SHELTER LIMITING FACTORS AND CARRYING CAPACITY: Limiting factor: limits how big a population can get Examples: food, water, sunlight, etc. Carrying capacity: max # of individuals an ecosystem can support indefinitely. PREDATION AND COMPETITION: Predation: another one animal eating Predatory population can limit the populations of what they eat. Prey populations can limit the populations of what eats them Competition: organisms using the same resources Limited resources limits populations HABITAT VS. NICHE Habitat: where an organism lives Their address Niche: role an organism plays in environment Considered their ‘job’ Includes what they eat, where they find food, when/where they sleep, how/when they reproduce, etc. EBR.8.B.6: IDENTIFY WAYS INDIVIDUALS INTERACT WITH EACH OTHER IN A COMMUNITY, INCLUDING: COMMENSALISM, MUTUALISM, PARASITISM SYMBIOSIS A close long-term interaction between two organisms of different species. At least one organism benefits. 3 kinds of symbiosis: Mutualism-both benefit Parasitism-one benefits, one is harmed Commensalism-one benefits, one is unaffected EXAMPLES OF SYMBIOSIS: Mutualism: bees pollinating flowers Bees get food, flowers are pollinated Parasitism: tapeworm living in a dog intestine Tapeworm gets a habitat and food, dog loses nutrients Commensalism: bison walking through grasses and birds following behind Bison unaffected, birds are able to see insects (food) after bison passes EBR.8.B.7: COMPARE AND CONTRAST PRIMARY SUCCESSION AND SECONDARY SUCCESSION SUCCESSION Word means to follow an order or sequence Environments re-grow after destruction in a specific order or sequence. Starts with pioneer species The first organisms to inhabit the area Ends with climax community The final community (fully grown) 2 kinds: Primary and Secondary PRIMARY SUCCESSION: Occurs where there is NO LIFE Begins on rock (NO SOIL) Pioneer species include: Lichens Mosses Examples include: After a glacier melts When a new island forms SECONDARY SUCCESSION Occurs where life exists (but is damaged) Begins on soil Pioneer species include: Small plants Examples include: After a tornado After a forest fire EBR.8.B.8: IDENTIFY PROPERTIES OF EACH OF THE LEVELS OF ECOLOGY: ORGANISM, POPULATION, COMMUNITY, ECOSYSTEM, BIOME, BIOSPHERE LEVELS OF ECOLOGY Organism-any individual living thing Population-group of individuals of same species Community-all living organisms in an area Ecosystem-all living and nonliving things in an area Biome-ecosystems with similar climates and organisms Biosphere-part of earth where living things exist EXAMPLES OF LEVELS OF ECOLOGY Organism-a rabbit Population-all the rabbits in the forest Community-all the rabbits, trees, squirrels, mushrooms, etc in the forest EXAMPLES OF LEVELS OF ECOLOGY CONT. Ecosystem-all the rabbits, trees, squirrels, mushrooms, soil, water, nutrients, etc in the forest Biome-temperate deciduous forests found on the different continents Biosphere-the earth and its atmosphere EBR.9.B.1, EBR.9.B.2, & EBR.9.B.3 These frameworks are so broad that we will use the articles to fill in these notes.