Test #2 Practice - Weeks 4 - 6 Flashcards
(39 cards)
True or False: Proper Nutrition affects wildlife by improving health, reproduction rates, disease resistance, and overall larger growth.
True.
What things does a wildlife habitat supply?
Cover, adequate space, food and water.
What do travel corridors provide for wildlife?
Provides a way for wildlife to travel safely from one habitat to another.
What are two components that wildlife cover provide?
Shelter from weather and protection from predators
What makes up an “ecosystem”?
All organisms and all abiotic factors within a geographic location
A species “niche” can be described as:
The role that it plays within its ecosystem
How do invasive species get released into the environment?
Ballast water, intentionally introduced, release of unwanted pets, stowaways on shipments of materials between locations
One key factor that makes a species “invasive” in its new habitat is:
A lack of predators
What is NOT an invasive species in the United States?
Black Bears
What is the most effective way to control invasive species
To prevent their introduction
The point at which a population levels out on its growth curve is known as:
Carrying Capacity
What type of limiting growth factor is: Disease
Density Dependent
What type of limiting growth factor is: Flood
Density Independent
What type of limiting growth factor is: Fire
Density Independent
What type of limiting growth factor is: Lack of Food
Density Dependent
What is Density Dependent
A limiting factor caused by the density of the population
What is Density Independent
A limiting factor caused by chance; not caused by density of the population
Many fish lay hundreds to thousands of eggs but only a few survive until adulthood. This type of strategy best matches the _________ strategy.
Type III or R-selected
What survivorship curve is type I?
K-selected; Almost all live from birth, lot of care to offspring, live a long time and then start to die off towards end of life expectancy
What survivorship curve is type II?
A mix of Type I (K-selected) and Type III (r-selected); from the moment they are born they die at a constant rate
What survivorship curve is type III?
R-selected; Many spawn and almost all die from birth but few survive to maturity and reproduce
The sustained yield is calculated to:
Allow the harvest without impairing a species ability to continue to survive and thrive
Which reproductive strategy is this characteristic: High level of parental care
K-Selected
Which reproductive strategy is this characteristic: experiences boom-bust cycles
r-Selected
