Energy Transfer Efficiency and Trophic Pyramids

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Presentation transcript:

Energy Transfer Efficiency and Trophic Pyramids Biomass- The energy in an ecosystem is measured in terms of biomass. Standing crop- The amount of biomass present in an ecosystem at a particular time. Ecological efficiency- The proportion of consumed energy that can be passed from one trophic level to another. Trophic pyramid- The representation of the distribution of biomass among trophic levels.

Trophic Pyramid for Serengeti

Matter cycles through the biosphere Biosphere- The combination of all ecosystems on Earth. Biogeochemical cycles- The movement of matter within and between ecosystems involving biological, geologic and chemical processes.

Hydrologic Cycle (Water Cycle)

Hydrologic Cycle Transpiration- The process where plants release water from their leaves into the atmosphere. Evapotranspiration- The combined amount of evaporation and transpiration. Runoff- When water moves across the land surface into streams and rivers, eventually reaching the ocean.

Carbon Cycle

Nitrogen Cycle

Phosphorus Cycle