Ecosystems Note series for Environmental Science “Are dynamic complexes of biotic communities and their associated abiotic environments interacting as.

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Ecology Study of interactions between organisms and their environments.

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Presentation transcript:

Ecosystems Note series for Environmental Science “Are dynamic complexes of biotic communities and their associated abiotic environments interacting as functional units.” -U.S. Fish and Wildlife Service

Composition of Ecosystems Individuals (species) live together in groups called populations

Ecosystem Energy Flows

Earth as a support system Composition of the troposphere

marine.rutgers.edu

Biogeochemical Cycles Cycles on earth including gases… - Oxygen - CarbonCarbon - NitrogenNitrogen Cycles involving solids… - PhosphorusPhosphorus - SulfurSulfur

Ecosystem Interactions There are many types of ecosystems in the world with many levels of interactions called “trophic interactions”

Lake Trophic Interactions

Carbon Cycle NYU Image s/carbon/earthfire.html s/carbon/earthfire.html

Nitrogen Cycle

Phosphorus Cycle

Sulfur Cycle

Taken from Garfield.com