Population Dynamics and Density Quiz

The change in a population's size over time, calculated as (births + immigration) - (deaths + emigration).

The maximum number of individuals that a particular environment can support indefinitely.

A type of species interaction where individuals compete for shared resources, like food, water, or space.

The number of individuals of a species per unit area or volume.

A type of species interaction where one species benefits by consuming another species (prey).

A type of species interaction where one species (parasite) benefits at the expense of another species (host).

A type of species interaction where both species benefit from the interaction.

A type of species interaction where one species benefits, while the other is neither harmed nor helped.

A visual representation of the survival rate of individuals within a species, showing the proportion surviving at different ages or stages of life.

Characterized by high survival rates in early and mid-life, with death rates increasing significantly in later stages.

Depicts a relatively constant mortality rate throughout the organism's life.

Show very high death rates early in life, with those that survive reaching adulthood with higher survival rates.

A hierarchical organization of organisms and their interactions within a specific geographic area, showcasing the interrelationships within ecosystems.

The study of how populations change in size and composition over time.

How different species interact and influence each other.

A type of defense against predators where an organism blends in with its surroundings.

When an animal uses bright colors to signal it's harmful or dangerous, like a poisonous dart frog.

A type of defense where an animal mimics another animal that is harmful, like a harmless Viceroy butterfly mimicking the harmful Monarch butterfly.

A type of defense using physical structures like spines, thorns, or shells, discouraging predators.

A type of defense involving behaviors like hiding, fleeing, forming groups, or displaying threatening behavior.

A method to estimate population size of organisms which are difficult to count directly. It involves counting individuals within a defined area (quadrat), then extrapolating to the whole area.

This technique estimates population size by capturing, marking, and releasing a sample of individuals. It's then repeated with a new sample counted to see how many are marked.

These mathematical models describe how populations change over time. They can range from simple models assuming constant rates to complex ones that account for density dependence, environmental and demographic randomness.

A type of population model that assumes constant birth and death rates and a closed population (no migration). This is a simplified starting point for understanding population dynamics.

These models account for the fact that birth and death rates can change based on population density. As populations grow, resources become scarcer, leading to lower birth rates or higher death rates.

These models acknowledge that the environment can have random fluctuations affecting populations. It adds an element of unpredictable change to population dynamics.

These models incorporate random fluctuations in birth and death rates due to chance events within the population, particularly important in small populations.