Environments, Organisms and Ecosystems Unit3:环境、生物与生态系统 Physical Fi environment/Ecosystems Light Interactions energy thesis Organisms eco Organic molecules Heat energy Atoms
Environments Environments, Organisms and , Organisms and Ecosystems Ecosystems Unit 3: Unit 3: 环境、生物与生态系统 环境、生物与生态系统
Ecological Concepts Ecology: Study of how organisms interact with each other and with their non-living surroundings Environment: Everything that affects an organism during its lifetime biotic: living component abiotic: non -living component
Ecological Concepts • Ecology: Study of how organisms interact with each other and with their non-living surroundings. • Environment: Everything that affects an organism during its lifetime. – biotic: living component – abiotic: non-living component
Biotic environment Abiotic environment (physical) Levels of Organization in Commun Energy Ecology Climate Population of species 2 Weather The study of Minerals ecology can take 合 Water place at several interaction p different levels as population of Population of species 3 Salinity shown in the Temperature gure. Sunlight Population of Individual oms an
Levels of Organization in Ecology The study of ecology can take place at several different levels as shown in the figure
Ecological Concepts Limiting Factors: Any factor whose shortage or absence restricts species success Habitat: Space an organism inhabits-defined by biological requirements of each particular organism Niche: Includes all ways an organism affects organisms with which it interacts as well as how it modifies its physical surroundings Species: Category of organisms in which individuals within the group can potentially interbreed and produce viable offspring
Ecological Concepts • Limiting Factors: Any factor whose shortage or absence restricts species success. • Habitat: Space an organism inhabits - defined by biological requirements of each particular organism. • Niche: Includes all ways an organism affects organisms with which it interacts as well as how it modifies its physical surroundings. • Species: Category of organisms in which individuals within the group can potentially interbreed and produce viable offspring
Moss habitat The habitat of mosses is typically cool, moist and shady. Mosses must also have a thin layer of water present
Moss Habitat The habitat of mosses is typically cool, moist, and shady. Mosses must also have a thin layer of water present