Ecological Succession. Succession Definition: The regular progression of species replacement in a...
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Transcript of Ecological Succession. Succession Definition: The regular progression of species replacement in a...
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Ecological SuccessionEcological Succession
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SuccessionSuccession
• Definition: The regular progression of species replacement in a changing ecosystem
• http://www.blueplanetbiomes.org/climate.htm
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Types of SuccessionTypes of Succession
• Primary Succession
• Takes place in areas that have not supported communities before or no life exists anymore
• Secondary Succession
• Takes place in an area that supported communities instead of barren land
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Types of Primary SuccessionTypes of Primary Succession
• Bare Rock• Lava Flows• Sand Dunes• Lakes
• http://www.hawaiipictures.com/pictures/volcano_lava.html
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Types of Secondary SuccessionTypes of Secondary Succession
• Usually occurs after a disturbance or natural disaster
• EX: fire
• landslides
• floods
• wind
• farming
• Cutting your lawn• http://www.sover.net/~kenandeb/fire/hotshot.html
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Primary SuccessionPrimary Succession
• First species to show up in the community is called the Pioneer Species
Lichens and Moss
Native Prairie Grass
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SuccessionSuccession
• Each intermediate community that appears after the pioneer species is called a Seral Community.
• Each seral community alters the physical factors of the area
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SuccessionSuccession
• The last community to show up in an area is called the Climax Community.
• This community is stable and permanent. A state of homeostasis has been met. http://www.blueplanetbiomes.org/deciduous_forest.h
tm
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Primary SuccessionPrimary Succession
Time
Small herbsand shrubs
Heath mat
Jack pine,black spruce,
and aspen
Balsam fir,paper birch, and
white spruceclimax community
Exposedrocks
Lichensand mosses
Fig. 8.15, p. 188
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Secondary SuccessionSecondary Succession
Time
Annualweeds
Perennialweeds and
grasses
ShrubsYoung pine forest
Mature oak-hickory forest
Fig. 8.16, p. 189
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Succession and WildlifeSuccession and Wildlife
Early SuccessionalSpecies
RabbitQuailRingneck pheasantDoveBobolinkPocket gopher
MidsuccessionalSpecies
ElkMooseDeerRuffled grouseSnowshoe hareBluebird
Late SuccessionalSpecies
TurkeyMartinHammond’sFlycatcherGray squirrel
WildernessSpecies
Grizzly bearWolfCaribouBighorn sheepCalifornia condorGreat horned owl
Ecological successionEcological succession
Fig. 8.17, p. 190
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Lakes and PondsLakes and Ponds
• Process of adding nutrients to a water ecosystem is called Eutrophication.
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Oligotrophic LakeOligotrophic Lake
• Lake that does not have a lot of nutrients in it.
• Characteristics:• Cold• Clear water• Support few Species• Not much biomass• http://www.satirewire.com/news/july02/viagra.shtml
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Eutrophic lakeEutrophic lake
• Lake that has a lot of nutrients in it
• Characteristics:• Warm• “Dirty” or “Cloudy”• Supports many species• Lots of Biomass
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© 2003 John Wiley and Sons Publishers
Fig 10.7 Diagram of bog Fig 10.7 Diagram of bog succession.succession.
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Primary SuccessionPrimary Succession
• Krakatoa Story
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Secondary SuccessionSecondary Succession
• Maywood Example
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The EndThe End