Biomes
What is a Biome?
A biome is an area of the planet that can be classified according to the plants and animals that live in it
What are keystone species?
Keystone species have a large impact on their habitats. They affect many other species.
Where does primary succession begin?
Areas where there is no soil.
What is species diversity?
The variety of species within a habitat or region.
How is a line transect used?
Line transects are one method of sampling the number of species in an area.
A sample of species along a specific physical line is measured.
•Temperature
•Soil
•Amount of light
•Amount of water
What are indicator species?
Indicator species respond to environmental changes dramatically. They can help measure environmental conditions and can be indicators of environmental health.
When does secondary succession occur?
When soil is still present
What is genetic biodiversity?
the variation of DNA and genes within a species or population
What does the number of species touching a transect line indicate
Evidence for the amount of biodiversity in that location.
What is the difference between climate and weather?
Climate is the weather in a particular location over a long period of time
Weather is the daily fluctuation of temperature and precipitation
What is an example of an indicator species?
Lack of wood storks in everglade ecosystems reveal the environmental conditions are not ideal for wading bird life
What is an example of secondary succession
Fire, Flood, Landslide...
What is ecological biodiversity?
the variation in the network of species present in a certain location and the way they interact with each other.
Where are invasive species from?
Invasive species come from a different region of the world
What are climatograms used for?
Climatograms provide the temperature and rainfall for an area and can identify biomes
Climatograms show changes in the climate over time and can be used to show the effects of human activity on the climate
What are the three ways mangroves are keystone species?
•Their leaves excrete excess salt from brackish water
•Their roots stabilize coastlines & reduce erosion
•Roots provide shelter for fish and shark species
What are pioneer species?
Pioneer species are the first organisms to inhabit barren environments.
How is a biodiversity index calculated?
A biodiversity index tells a scientist how many species exist in a certain environment
What happens when invasion species are introduced to a community?
Once introduced into an ecosystem, invasive species can spread quickly and widely
A biome is cold, treeless and permanently frozen. Which type of biome is it?
Tundra
What are mangroves threatened by?
Mangroves are threatened by shrimp farming, tourism and coastal development
What is the final stage of succession called?
Climax Community.
How is a biodiversity index calculated?
number of species in the area ÷ total number of individuals in the area = biodiversity index
What impact do invasive species have on biodiversity?
Biodiversity in these ecosystems can be dramatically affected because the new species is able to reproduce faster than the native species can adapt to the new competition.