Reading the chapters Always read the study guide at the back of the chapter first, and then for review It is a succinct synopsis of the major concepts in the chapter Key questions at the end of the chapter: 8,9,11,12,13,14,17,18,19,20,22,24

Biology Chapter Two Ecology: The study of how organisms interact with their environment (biotic and abiotic) Abiotic factors???? Biotic factors????

Biology Ecology Vocabulary BioticabioticBiosphere Populationcommunityecosystem Habitatniche Symbiosis MutualismCommensalism ParasitismAutotroph heterotroph SaprotrophDecomposer

More Vocabulary Food chainEnergy Pyramid Food Web Producer Consumer Cyclecarbon cycle Herbivore Carnivore omnivore Predator prey competition biome

Biosphere Biosphere: The part of Earth where living things are found: From a mile below ground to 10 miles up in the atmosphere

Hierarchy Biosphere –Ecosystem Community –Population »Individual Organism

Ecosystems Rain forest Pond Desert Yard Puddle Dirt Your body!

Resources uk.org.uk/mag/indexmag.html? microscopy- uk.org.uk/mag/artmay00/demodex.htmlhttp:// uk.org.uk/mag/indexmag.html? microscopy- uk.org.uk/mag/artmay00/demodex.html uk.org.uk/mag/indexmag.html? microscopy- uk.org.uk/mag/artmay00/demodex.htmlhttp:// uk.org.uk/mag/indexmag.html? microscopy- uk.org.uk/mag/artmay00/demodex.html

Vocab Habitat-where something lives Niche-all the strategies and adaptations an organism uses to meet its needs Habit=Home, Niche=Job Habit = WS, Niche =teacher, fisherman, rocket launcher, etc.

Relationships Predator-prey Parasite Commensalism Mutualism

Types Autotrophs-Producers-plants and chemotrophs Heterotrophs- Consumers –Carnivores –Herbivores –Omnivores –Detritovores-saprotrophs-decomposers

Food chains and webs Represent energy flow Loose about 90% (average loss) of energy at each level Corn -> Cow ->Me 100%->10%->1% Producer->1st order consumer->2 nd order consumer

Energy The energy loss from level to level limits how many levels can be in a food chain, web or pyamid

Biomass pyramid

Biomass or energy pyramid

Mother nature recycles This way you don’t run out of “Limiting factors”….know this term.

Carbon cycle

Nitrogen cycle

One set of numbers

What is the difference between an energy pyramid and a biomass pyramid? rence_between_biomass_pyramid_and_ener gy_pyramidhttp://wiki.answers.com/Q/Whats_the_diffe rence_between_biomass_pyramid_and_ener gy_pyramid

Food Web

3.1 Communities A community is a area with interacting populations A Limiting factor is something that prevents a population from growing larger: it may be biotic (lack of food, predation) or abiotic (too cold, too dry, not enough sunlight) Tolerance is the ability to withstand a range of conditions

Succession Succession is change in a community over time Old field succession is an example (Show at Paisley) Primary succession – the first colonization of an area, such as on a new island Secondary succession- after a disruption such as a fire Succession ends in a climax community