Biomes
Biology
Capital H. S.
Limiting Factors
• Prevent population from reaching
biotic potential
• Types
– Density dependent
– Density independent
Limiting Factors
• Density dependent
• Effect becomes more intense with
increased density
• Examples
–
–
–
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Parasites & diseases
Competition for resources
Toxic effect of waste products
Predation
Limiting Factors
• Density independent
• Occur independently of density
• Examples:
– Natural disasters
– Climate extremes
Biomes
• Large group of ecosystems that
share the same type of climax
community.
• Based on climate:
– Light
– Water
– Temperature
Types of Biomes
• Terrestrial (land)
• Aquatic (water)
Which Biome is it?
http://www.tropical-islad.de/KCH%20Sarawak%20-%20Bako%20National%20Park%20%20Tropical%20rainforest2%201_b.jpg
Tropical Rainforest
• Tall trees
• High temperature
• Heavy rainfall
Which Biome is it?
Desert
• Cactus/succulents
• Hot days, cold
nights
• Hot summers
• Little rain
Which Biome is it?
http://66.9.79.220/images/Savanna.jpg
Which Biome is it?
• Savannas
–
–
–
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Tropical
Scattered trees
High temperature
Less rainfall than
tropical rain forest
Grasslands
• Temperate
–
–
–
–
Grasses
Seasonal droughts
Occasional fires
Lower temperature &
less rainfall than
savannas
Which Biome is it?
http://images.google.com/imgres?imgurl=http://earthobservatory.nasa.gov/Laboratory/Biome/Images/pictemperate
.jpg&imgrefurl=http://earthobservatory.nasa.gov/Laboratory/Biome/biotemperate.html&h=263&w=350&sz=56&tbnid=T
mDCmuwkKKMJ:&tbnh=87&tbnw=116&hl=en&start=1&prev=/images%3Fq%3Ddeciduous%2Bforest%26svnum%3D10%2
6hl%3Den%26lr%3D
Temperate Deciduous Forest
• Deciduous trees
• Oak, maple
• Warm summers
• Cold winters
• Moderate rainfall
Which Biome is it?
http://www.wildnatureimages.com/S%20to%20Z/TIAGA-FOREST-FALL..jpg
Taiga
• Coniferous forests
• Pines & firs
• Cold winters
• Warm to cool
summers
• Heavy snowfall
• Moderate rainfall
Which Biome is it?
http://nematode.unl.edu/tundra.jpg
Tundra
• Grasses & sedges
• Very cold winters
• Permafrost
• High winds
• Little rain
Which Biome is it?
Marine Biome
• Adaptations to:
–
–
–
–
–
Light
Temperature
Pressure
Salt
Tides
Which Biome is it?
Freshwater Biome
• Lakes, ponds,
rivers, etc.
• Adaptations to:
– Light
– Temperature
– Moving water
Which Biome is it?
Estuary
• Where the river
meets the sea
• Most productive
biome
• Adaptations to:
– Fluctuating salt
levels
– Tidal influence