U1 M1-3
An interaction between two species in which one species benefits and the other species is neither harmed nor helped.
What is Commensalism?
Anything that releases more carbon than it absorbs
carbon source
When a large population declines in number, the amount of genetic diversity carried by the surviving individuals is greatly reduced.
Population Bottleneck
Areas of the world in which a species lives.
Geographic range
The limit to the number of individuals that can be supported by an existing habitat or ecosystem, and is denoted as K.
Carrying Capacity
When two species evolve to divide a resource based on differences in their behavior or morphology.
What is Resource partitioning?
Anything that absorbs more carbon than it releases
carbon sink
The number of different species in a given area.
Species Richness
The succession of plant life that occurs in areas that have been disturbed but have not lost their soil
Secondary succession
A factor that influences an individual's probability of survival and reproduction in a manner that depends on the size of the population.
Density-dependent factor
A biome characterized by cold, harsh winters, and hot, dry summers. Also known as cold desert.
What is Temperate grassland?
The total amount of solar energy that producers in an ecosystem capture via photosynthesis over a given amount of time.
Gross Primary Productivity (GPP)
In the context of ecosystem services, benefits of an ecosystem such as recreation and tourism
Cultural Service
The processes that alter the genetic composition of a population over time, but the changes are not related to differences in fitness among individuals.
Evolution by random processes
The ability to produce an abundance of offspring.
Fecundity
Describes a lake with a low level of phytoplankton due to low amounts of nutrients in the water.
What is Oligotrophic?
Low in oxygen
Hypoxic
The basic ecosystem processes, such as nutrient cycles and soil formation, that are needed to maintain other services
Supporting services
Occurring somewhat regularly, such as cycles of high rain and low rain that occur every 5 to 10 years.
Episodic disruptions
The movement of people out of a country or region.
Emigration
A warm and wet biome found between 20 ° N and °20 S of the equator, with little seasonal temperature variation and high precipitation.
What is Tropical Rainforest?
The release of water from leaves into the atmosphere.
Transpiration
A description of how the number of species on an island increases with the area of the island.
Species-area curve
change in allele frequencies as a result of the migration of a small subgroup of a population
Founder effect
A method which dictates that by dividing the number 70 by the percentage population growth rate we can determine a population's doubling time.
Rule of 70