Ch. 5 Flashcards
R-selected species
Capacity for a high rate of population increases.
Population crash
Population suffers a sharp decline.
Carrying capacity
The maximum population of a given species that a particular habitat can sustain identity.
Environmental resistance
The sum of all such factors in any habitats.
Population density
The number of individuals in a population found within a defined area or volume.
Limiting factors
A number of physical and chemical environment under which it can survive.
Range of tolerance
A range a variation in its physical and chemical environment under which it can survive.
Age structure
It’s distribution of individuals among various age groups.
Population
A group of interbreeding individuals of the same species.
Inertia
The ability of an ecosystem to be restored through secondary ecological succession after a more severe distrbuance.
Secondary ecological succession
A series of communities or ecosystems with different species develop in places containing soil or bottom sediment.
Primarily ecological succession
Gradual establishment of communities of different species in lifeless areas where there is no soil in a terrestrial ecosystem or no bottom sediment in an aquatic ecosystem.
Ecological succession
Normally gradual change in species composition a given area.
Commensalism
An interaction that benefits one species but has little if any beneficial or harmful effect on the other.
Mutualism
Two species be have in ways that benefit both by providing each with food shelter or some other resource.
Parasitism
When one species feeds on another organism usually by living on or inside the host.
Coevolution
When populations of two different species interact in such away over a long period of time.
Predator-prey relationship
A species interaction that has a strong effect on population sizes in many ecosystems.
Prey
As part of a food web.
Predation
A member of one species competing for similar scarce resources evolve specialized traits that allows them to share resources by using parts of them.
Resource partitioning
Occurs when species competing for similar scarce resources evolve specialized traits that allow them to share resources by using parts of them.
Interspecific competition
Competition among different species.
