Biology Unit 7 Lesson 3 Ecological Succession

term that describes the NON-LIVING parts in an ecosystem.

The VARIETY of LIVING ORGANISMS in a particular habitat or ecosystem. It includes species diversity, habitat diversity and genetic diversity.

the animal and plant life (LIVING PARTS) of a particular ecosystem or habitat.

A stable group of plants & animals that is the end result of the succession process. (final stage ecosystem in balance)-hundreds to thousands of years to reach

A group of interdependent organisms inhabiting the same region and interacting with each other.

a temporary EVENT such as a storm, fire, volcano, or human activity THAT CAUSES A noticeable CHANGE in an ecosystem.

a series of more-or-less predictable CHANGES that occur IN A ECOSYSTEM OVER TIME until it is a stable climax community.

helps break down rocks to begin MAKING SOIL ; 1st organisms to show up in Primary succession

first species to appear in an area! / CREATE SOIL during primary succession- (lichen/moss)

succession that occurs on surfaces where NO SOIL exists; lichens & mosses grow first on bare rock

Succession after a disturbance damages an ecosystem without destroying the soil. (ex. - forest fire; tornado) SOIL IS PRESENT!