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Transcript
Ecological Succession – Notes 2013 Introduction What are some examples of primary succession? Ecological Succession is __________________, _________________________________ change to the plants and animals in an _______________________. It is the process by which an area that is ____________________ __________________ could eventually become a _________________. Abrupt Changes What kind of changes can cause drastic changes in an ecosystem? What can these changes do to an ecosystem? Bare rock will first be colonized by a _____________ _____________________. What is a pioneer species able to tolerate? What will happen to the earth? Leave the earth _____________________ How do they obtain food? Ecological Succession The ____________ and _______________ factors of an ecosystem work together in _______________(balance). Example: The process of ecological succession can _________ _____________ecosuystems to restore this equilibrium and enable life to thrive again. What do they produce? Succession can be ______________ or ______________________ This helps to create ___________ _______________. Stages of Primary Succession Does Succession refer to the progressive, predictable and long term changes to an ecosystem? Over many years, the soil gets deeper and _______________ grow. Primary Succession What happens to the mosses as they die? Primary succession is the _________________ of ________________ into an area not _________________ by any organisms. What replaces mosses? Ecological Succession – Notes 2013 As succession progresses, conditions in the habitat change and become less suitable for some species but _________________ suitable for others. Consider a lawn that is constantly being mown. Why does it never reach the climax community stage? Create a timeline that has the correct order of succession. Observing Succession Question Succession is not limited to large areas, but occurs all around us. An area of woodland had once been bare rock. During the process of succession, what would have been the first species to inhabit the area? Name an area around your community where you can observe succession Day 2 Secondary Succession What type of events could cause new communities to begin? The new community would change through time until its reached ________________ _______________once more. Importance of Succession Ecosystems are constantly changing. _____________, ________________ and ________________ frequently occur all over the world. What allows a disturbed ecosystem recover? A garden cleared of vegetation and a concreted area both have the potential to turn into a woodland. You could see this for yourself by observing a cleared area of a garden. Which of the following is not true about ecological succession? A) A parking lot could eventually become woodland B) It enables disturbed or damaged ecosystems to repair themselves. C) Succession results in a stable community called the climax community. D) The first dominant species will remain throughout all stages of succession. What would our world be like if ecosystems could never recover?