Ecology and
Distribution of
Organisms
Distribution of
Organisms
The most significant influence on distribution of organisms
The climate
The feeding relationships between species in a community is called
Trophic Structure
25-29 degrees Celsius year round with high humidity. High levels of rainfall
Tropical Rainforest
Energy cannot be ______ or _______
Created, Destroyed
Name this equation
H= -(Pa ln Pa)+(Pb ln Pb)+(Pc ln Pc)...
Shannons Diversity Index
Three abiotic factors are
Water, sunlight, temperature, air, soil
The position an organism occupies within a food chain
Trophic level
Found in coastal areas. High vulnerability to fires. Dry hot summers. Mild winters
Chaparral
What happens as we travel down trophic levels
loss of heat
Which community is more diverse
1. A)25 B)26 C)24 D)25
2. A)70 B)10 C)10 D)10
1
Three biotic factors are
Plants, animals, bacteria, fungi
To recycle nutrients, an ecosystem must have, at a minimum,
* Producers.
* producers and decomposers.
* producers, primary consumers, and decomposers.
* producers, primary consumers, secondary consumers, and decomposers.
* producers, primary consumers, secondary consumers, top carnivores, and decomposers.
2. Producers and decomposers
Plot of annual mean temperature and precipitation in a region
Climograph
Amount of light energy converted to chemical energy by autotrophs
Primary production
Interaction that benefits members of BOTH of the interacting species
Mutualism
what affect on climate does removing vegetation from an ecosystem have
Hotter, dryer
Organisms that prey at feed on tertiary consumers and give example
Quaternary consumer. ex. lion, polar bear, human
Lowest level of a body of water
Benthic Zone
Approximately how many kilograms of secondary consumer biomass can be supported by a field plot containing 7,000 kg of plant material?
70 kg
This model is used to examine decreases in the rate of population growth as population size approaches carrying capacity
The pattern of spacing among individuals within a population's boundaries
Population Dispersion
Have Strong effects on their communities as a result of their large size or high abundance.
Foundation species
example coral reefs, redwood trees
1000 meter elevation increase is on average, equal to a drop of
6 degrees Celsius (guess can be within 2 degrees)
Subtraction this will convert gross primary productivity into net primary productivity
Autotrophic respiration
Higher diversity communities are often more resistant to
Introduced species