Population Dynamics
The number of organisms per unit area
What is population density?
Large groups of ecosystems with the same climate and similar communities
What are biomes?
The variety of life determined by the number of species within that area
What is biodiversity?
This refers to a human-caused impact on the environment
What is an anthropogenic effect?
The spotted lantern fly is one example
What is an invasive/introduced species?
Populations do not exist within a _______. They are influenced by abiotic and biotic factors
What is a vacuum?
These are land-based biomes
What are terrestrial biomes?
Which of the three elements of biodiversity drives diversity at all other levels?
What is genetic diversity?
There's no one-size-fits all approach to this!
Drought and extreme hot/cold are a couple examples
What are density-independent factors?
Disease is an example of this
What is a density-dependent factor?
Terrestrial biomes are determined primarily by their temperate and _______.
What is precipitation?
What is species richness?
This represents the greatest threat to biodiversity in an ecosystem.
What is habitat loss?
This pattern of population dispersion has individuals grouped together throughout the environment
What is clumped population dispersion?
Two organisms competing for the same resource
What is competition?
Aquatic biomes are influenced by how far down this reaches into the water?
What is sunlight?
Occurs when a population is removed faster than it can recover naturally
What is overexploitation/overharvesting?
Conservation aims to reduce or restore the impact made by _________ to the environment
What are anthrophogenic or human-cause effects
The population density for the U.S. is lower than Mexico despite a higher overall population for this reason
What is larger area?
A repeating rise-and-fall patter between predators and prey population
What is a cyclical relationship?
The location along this line help determines a region's weather and climate conditions.
What is latitude?
A phenomenon when a toxin increases in concentration as you move up the food chain
What is biological magnification?
These are natural processes such as pollination, water purification, and nutrient cycling that humans rely on ecosystems for
What are ecosystem services?
An S-shaped curve representing growth that has reached its carrying capacity
What is a logistic growth curve