Organisms and Their Environments

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Presentation transcript:

Organisms and Their Environments Principles of Ecology Organisms and Their Environments

Ecology the study of interactions among living things, & between living things and their environment (surroundings)

Includes communities & abiotic factors Levels of Biological Organization Includes communities & abiotic factors Groups of populations in a region. One Group of organisms of same species

Biome – major regions with communities characterized by climate and plant type Biosphere – part of Earth that supports life

Make a mnemonic I P C E B

How to study Ecology Observations Direct Indirect Estimate population size Random quadrat Line transect

How to study Ecology Experiments Laboratory – control variables, ? Accuracy Field – realistic, ? cause and effect

How to study Ecology Modeling Computer Mathematical Describe and model natural processes, manipulate variables, compare to actual data, extrapolate (project into future)

Biotic Factors All the living organisms that inhabit an environment. Animals, plants, fungi, bacteria, protists

Abiotic Factors All the non-living parts of the environment Rocks, water, minerals, temperature, etc.

Biodiversity-the variety of living things in an environment

Local Keystone

African/Indian Elephants Grassland NW Pacific Sea Otters Kelp forest African/Indian Elephants Grassland Yellowstone Wolves https://www.youtube.com/watch?v=ysa5OBhXz-Q

Ecology Observations How do you determine the size of a population of Elephants Oaks trees in a forest Grass plants in a field Ants in an ant hill Fish in a pond Activity: Estimating Population Size

Ecology Vocab Ecology Biotic Organism Abiotic Population Biodiversity Community Ecosystem Biome Biosphere Observation Experimentation Modeling Biotic Abiotic Biodiversity Hot spot Keystone species