ECOSYSTEMS AND COMMUNITIES Big Q How do abiotic

ECOSYSTEMS AND COMMUNITIES Big Q: How do abiotic and biotic factors shape ecosystems?

ENGAGE - WHERE DO YOU LIVE? ➤ Describe the climate where you live. What factors influence it? ➤ What kind of life is characteristic of the area you live?

EXPLAIN - CLIMATE ➤ Climate - the average conditions in an area over long periods ➤ Climate is affected by: ➤ 1. Solar Energy (trapped or flowing) ➤ 2. Latitude ➤ 3. Winds ➤ 4. Ocean Currents

EXPLORE - GREENHOUSE EFFECT ➤ What is the greenhouse effect? ➤ What factors influence this?

EXPLAIN - NICHE ➤ Niche - an organism’s role in the environment ➤ Range of Tolerance ➤ 1. The ability to survive and reproduce under a range of environmental circumstances ➤ 2. Range of Tolerance helps a species find its specialized place to live called its habitat

EXPLAIN - COMPETITIVE EXCLUSION PRINCIPLE ➤ Competitive Exclusion Principle - no two species can occupy exactly the same niche in the same habitat at the same time ➤ When this happens you get: ➤ 1. competition - fight for survival ➤ 2. division of resources

EXPLAIN - RELATIONSHIPS IN AN ECOSYSTEM ➤ Predation - one animal captures and feeds on another animal. ➤ Predator - captures and feeds ➤ Prey - is fed on ➤ Herbivory - an animal feeds on a producer ➤ Keystone Species - changes in this population will change the structure of the community

EXPLORE - UNTAMED SCIENCE ➤ What is symbiosis?

EXPLAIN- SYMBIOSIS ➤ Symbiosis - a relationship in which two species live closely together ➤ Types: ➤ 1. Mutualism - both species benefit from the relationship ➤ 2. Commensalism - one benefits and one is unharmed ➤ 3. Parasitism - one benefits and one is harmed

EXPLAIN - SUCCESSION ➤ Ecological Succession - a series of predictable changes that occur in a community over time ➤ 1. Primary Succession - An event that occurs and leaves bare rock, destroying the community entirely Pioneer Species - the first species to colonize barren areas Climax Species - the species that exists when the ecosystem becomes stable

EXPLAIN - SUCCESSION ➤ 2. Secondary Succession - partial destruction of a forest community. Faster recovery rate. (forest fire) Benefits of Succession: 1. Recycles nutrients to soil 2. Replenishes plant life 3. Resets ecosystems

ELABORATE - SUCCESSFUL SUCCESSION? ➤ Answer all the questions on your quick lab