4.1 Species, Communities, and Ecosystems

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Presentation transcript:

4.1 Species, Communities, and Ecosystems Topic 4: Ecology 4.1 Species, Communities, and Ecosystems

Levels of an Ecosystem Abiotic vs Biotic

What is a species? Species - ?

What is a species? How do species recognize their own species? Can two different species breed? Species may be reproductively isolated in separate populations

Types of Species Autotrophic or heterotrophic Consumers Producers Both? Consumers Producers Detritivores Saprotrophs Carnivores Herbivores Omnivores

What is a community? A community is formed by different populations of different species living together and interacting with each other Can be formed by interactions with abiotic factors Mutualism Commensalism Parasitism

Ecosystems Abiotic and biotic Abiotic can influence biotic Biotic can influence abiotic

Nutrient Cycling Inorganic nutrients are maintained by nutrient cycling Why are inorganic nutrients important? (C, H, O, N, P) How do autotrophs obtain inorganic nutrients? How do heterotrophs obtain inorganic nutrients?