Ecology.

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Ecology

Ecology Study of interactions between - energy and the environment Study of interactions between - living and non-living stuff Study of interactions between - living organisms and how they affect the environment

Abiotic Factors Water – must be plentiful and usable Soil – includes rock particles, water, air and organic (non living) materials Temperature – suitable for life (endo- or ectothermic) Light – radiant energy, harnessed by algae and plants Inorganic substances – rocks, minerals, air

Biotic Factors All organisms in ecosystem Plants Animals Monerans Protists Fungi

Limiting Factors Any biotic or abiotic component limits the size and complexity of the community Water in the desert Number of trees to nest in Hours of daylight

What are the limiting factors here???

Energy Pyramid

Energy in the Ecosystem

The Winner is…. Decomposers – feed on everything

Food Chain Single strand of web (simple) Ex Sun  Daisy  Catipillar  Cardinal  Cat  Worm

Food Web Many intertwined strands (complex)