PRINCIPLES OF ECOLOGY Chapter 2 Organisms Their Environment
- Slides: 20
PRINCIPLES OF ECOLOGY Chapter 2
Organisms & Their Environment Ch. 2, Sec. 1
What is Ecology? • Ecology = study of interactions between organisms & their environment
• Disruptions to the environment can ripple throughout the entire ecosystem
Biosphere • Biosphere = parts of Earth and its atmosphere that support life, from the sky down to the bottom of the ocean
• Biotic Factors • = the living parts of an ecosystem Abiotic Factors = the nonliving parts of an ecosystem (sun, temperature, p. H, gasses, water) that are part of an organism’s life
Levels of Organization • 1. Biosphere
• 2. Ecosystem = the biotic & abiotic parts of an environment found in a particular place – The biosphere is made up of many different ecosystems
• 3. Communities = all the interacting living organisms in an area, all the different species
• 4. Populations = all members of the same species living in one place, at one time
• 5. Organism = the individual organism
Organisms in Ecosystems • Habitat = the place where an organism lives out its life • Niche = all strategies & adaptations a species uses in its environment; an species’ role – What food they eat – What kind of shelter used – Where they reproduce
• Having a specific role in an environment helps reduce competition
Survival Relationships (2 kinds) • A. Symbiosis = organisms living closely together; 3 types of symbiosis
• 1. Mutualism = 2 species of organisms benefit from each other
• 2. Commensalism = one species benefits & the other is neither harmed nor benefited
• 3. Parasitism = one species benefits at the expense of another species
• B. Predation = a predator eats another organism for food
• http: //www. cstephenmurray. com/onlinequ izes/biology/Ecology/typesofinteractionsex amples. htm
Practice • Cowbirds lay their eggs in the nests of other birds and allow them to raise their chick usually at the expense of the offspring of the other species. • What would happen to a forest community if the cowbird population increased?
- Principles of ecology section 3 cycling of matter
- Section 1 organisms and their relationships
- Organisms ecology
- Chapter 2 principles of ecology
- Chapter 2 principles of ecology answers
- Principles of ecology section 2 flow of energy
- Chapter 2 section 1 organisms and their relationships
- Member of the same species
- Unicellular and multi cellular
- Undesired change in air water soil
- What is niche in biology
- Ecology and environmental science
- Organisms and the environment
- Section 1 population dynamics answer key
- Principles of ecology 2 flow of energy in an ecosystem
- Where do organisms get their traits?
- Where do all organisms get their energy
- Living organisms and their surroundings
- Method of grouping organisms based on their similarities
- Organisms that make their own food
- Financial environment of business