Control & Regulation Succession in Plant Communities M r G D a v i d s o n.

Slides:

Advertisements

Similar presentations

Ecological Succession: (Important info in blue)

Advertisements

Vegetation Succession Moorlands Plagioclimax Community: A stable plant community that has arisen as a result of human intervention in the natural succession.

Succession Part 4. Brainstorm How do Ecosystems Form?

Succession A Case Study – Poynton Park and Pool – an arrested hydrosere.

Some Definitions : Just to remind you!

Some Definitions : Just to remind you!

LG: How Do Ecosystems Recover from a Disturbance?

Primary Succession Defined: Establishment and development of an ecosystem in an uninhabited environment Volcanic lava creates new land Glaciers retreating.

A forest could have been a shallow lake a thousand years ago. Mosses, shrubs, and small trees cover the concrete of a demolished building.

Ecological Succession

Science 1206 Unit 01, Section 02, Lesson 02 Succession.

Describe the changes you saw. What plants were first to arrive on the scene? Will the area look like it originally did? How long will it take to change?

Primary Succession Defined: Establishment and development of an ecosystem in an uninhabited environment Starts with bare rock.

Succession Science 1206.

CHANGE. Change happens all the time. Some examples of change are: volcanoes, climate change, forest fire, flood, mudslides, glacier melting.

CHAPTER 6 ECOSYSTEM BALANCE.

Succession Where the changing of species composition occurs over a period of time. Two main types: Primary succession: starting from scratch. Where there.

Section 3: How Ecosystems Change

Ecological Succession

Ecological Succession

AG-WL-3. Why do hunters establish food plots or use game feeders?

How Ecosystems WorkSection 3 Section 3: How Ecosystems Change Preview Bellringer Objectives Ecological Succession.

Succession in Ecosystems

Ecological Succession –Syllabus Topics to – Describe the concept and processes of succession in a named habitat. –2.3.6 Explain the changes.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Objectives Chapter 5 Section 3 How Ecosystems Change List two examples.

Ecosystem Responses to Disturbances AP Env Sci

Ecological succession

Ecological Succession. Examples of Changing Ecosystems A forest could have been a shallow lake a thousand years ago. Mosses, shrubs, and small trees cover.

Changes in Ecosystems: Ecological Succession. What is Ecological Succession? Natural, gradual changes in the types of species that live in an area Can.

Ecological Succession Environmental Science. Ecological Succession  Ecosystems are constantly changing.  Ecological succession is a gradual process.

Changes in Ecosystems: Ecological Succession

Ecological Succession. Succession  Primary succession:  development of a new community with no previous life.  No soil is initially present.  Very.

Obj.Assessment StatementNotes Describe the concept and processes of succession in a named habitat. Page Students should study named examples.

Changes in Ecosystems: Ecological Succession Know this for the quiz.

How Ecosystems WorkSection 3 Ecosystems are constantly changing. Ecological succession is a gradual process of change and replacement of the types of species.

Chapter 3: How ecosystems work Section 3.3: How ecosystems change.

Changes in Ecosystems: Ecological Succession. What is Ecological Succession? Natural, gradual changes in the types of species that live in an area Can.

Succession FlipTask Your task is to learn the basics of succession and its key terminology BEFORE our lesson on it. You may take whatever notes you need.

ECOLOGICAL SUCCESSION New Beginnings. Bellringer  How does bare rock become a dense forest?

Ecological Succession Change in an ecosystem. Primary Succession Succession that takes place where no soil had previously existed Ex: land created by.

Bare rock is exposed due to some type of disturbance like a retreating glacier or volcanic eruption. No soil is present. Pioneer species, like lichens.

How Ecosystems WorkSection 3 DAY ONE Chapter 5 How Ecosystems Work Section 3: How Ecosystems Change.

Succession. A process by which communities of plants and animals colonise an area and then, over time, are replaced by other, more varied organisms.

Succession. THINK ABOUT IT WARM-UP: What would happen to the school grounds if we stopped mowing the grass? What plants and animals would you see… 1.In.

Success criteria Describe one example of primary succession resulting in a climax community.

What Is an Ecosystem?. Interactions of Organisms and Their Environment Ecology is the study of the interactions of living organisms with one another and.

Water Cycle. Water Cycle Carbon Cycle Nitrogen Cycle.

Succession Chapter 4.3.

Objectives List two types of ecological succession.

Section 3: How Ecosystems Change

Environmental Science: Section 2-2 Ecological Succession

Ecological Succession

Section 3: How Ecosystems Change

Section 3: How Ecosystems Change

Section 3: How Ecosystems Change

Ecological Succession

Changes in Ecosystems: Ecological Succession

Ecological Succession

4.3 Succession.

Section 3: How Ecosystems Change

Lesson Overview 4.3 Succession.

Section 3: How Ecosystems Change

Section 3: How Ecosystems Change

Section 3: How Ecosystems Change

Lesson Overview Succession.

Section 3: How Ecosystems Change

Section 3: How Ecosystems Change

Section 3: How Ecosystems Change

Presentation transcript:

Control & Regulation Succession in Plant Communities M r G D a v i d s o n

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson2 Plant Succession  If a field is abandoned and left bare, many seeds will land on it, but only some will survive.  This pioneer community will then be replaced by sturdier plants.  The organic matter of the pioneer plants will add to the soil fertility, providing better conditions for newer plants.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson3 Plant Succession  Eventually, this process will stop, usually with trees in this country.  These trees are known as the climax community.  The original colonisation of the bare field is known as primary succession.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson4 Plant Succession  The overtaking of a community by the next is known as secondary succession.  The plant occupying the field increases the favourability so much that it becomes more favourable to another community which soon takes over.  e.g. humus from dead leaves is broken down and makes the soil more fertile so that other, more demanding species can move in and choke out the existing community.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson5 Plant Succession  The Climax community is:-  the final product of succession  self-perpetuating  in dynamic equilibrium with its environment

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson6 Plant Succession  As succession goes on, soil becomes deeper and organic matter and mineral contents rise.  The vegetation increases in size and biomass.  As a result of changing vegetation, supported animals also change.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson7 Plant Succession  The more developed the succession, the more diversity there is of life forms and the more complex the food-webs.  Soil type is affected by edaphic factors:  mineral matter  pH  humus content  These are affected by the climate and bedrock of a given area.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson8 Plant Succession  Some soils, however, are unable to support climax communities due to a lack of one of the above, for example:  The highest supportable community in this area is not known as the climax community, but as the edaphic climax community, which means that it is atypical of the climatic region in which it lives.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson9 Human intervention  In Britain, a few hundred years ago, the countryside was covered in the climax community of deciduous forest.  However, most of this has been cleared for settlement, conifer forestry and most importantly, agriculture.

Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015Sunday, April 26, 2015G Davidson10 Human intervention  The constant use of the land prevents succession and stops climax communities from returning.  Further grazing by animals such as sheep also prevents saplings from developing into trees, and so the climax communities rarely develop.