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Which of these abiotic factors would contribute to a clumped dispersion pattern in an ecosystem? Select all correct answers.
A population of antelope has a negative population growth rate. Which of these conditions must also be true for the population growth rate to be negative?
births + deaths < immigrations + emigrations
births + deaths > immigrations + emigrations
births + immigrations < deaths + emigrations
births + immigrations > deaths + emigrations
A population of warblers experiences a period of exponential growth. Which of these factors would be a density-dependent limiting factor that could decrease the carrying capacity of the ecosystem for the warbler population?
a competing species moves into the forest
a period of lower than normal rainfall
a builder removes trees for an office park
high winds knock down a quarter of the trees
A population of deer is displaced by a massive flood in their habitat following a severe rainstorm. The flood is an example of
a density-dependent limiting factor.
a density-independent limiting factor.
A population of rodents is introduced on a remote island due to a shipwreck. Eventually, the population reaches the island’s carrying capacity. At this point, the birth and death rates are...
Use the graph to answer the following question:
A female salamander lays hundreds of eggs at a time. However, after hatching, few of the larvae survive to adulthood. According to the graph, which type of survivorship does the salamander exhibit?
Use the graph to answer the following question: A songbird has an equal chance of surviving at all stages of its life. According to the graph, which type of survivorship does the songbird exhibit?