Which survivorship curve has the highest death rate?
Type III
Type III or concave curves have the greatest mortality (lowest age-specific survival) early in life, with relatively low rates of death (high probability of survival) for those surviving this bottleneck.
What does Type 3 survivorship curve mean?
In survivorship curve. The Type III curve, characteristic of small mammals, fishes, and invertebrates, is the opposite: it describes organisms with a high death rate (or low survivorship rate) immediately following birth.
What does Type 2 survivorship curve mean?
A type II survivorship curve shows a roughly constant mortality rate for the species through its entire life. This means that the individual’s chance of dying is independent of their age. Type II survivorship curves are plotted as a diagonal line going downward on a graph.
What is death rate curve?
A graph that depicts the change in mortality rates throughout life.
What organisms have a Type 2 survivorship curve?
For populations with Type II survivorship, the mortality of an individual does not depend on its age. Commonly listed examples of this include rodents, adult birds, and certain turtle species.
What organisms have a Type 3 survivorship curve?
Trees, marine invertebrates, and most fish have a Type III survivorship curve. In a Type III curve, very few organisms survive their younger years.
What does Type 1 survivorship curve mean?
In survivorship curve. The Type I curve, illustrated by the large mammals, tracks organisms that tend to live long lives (low death rate and high survivorship rate); toward the end of their life expectancies, however, there is a dramatic increase in the death rate.
What does a survivorship curve show?
survivorship curve, graphic representation of the number of individuals in a population that can be expected to survive to any specific age.
What organisms have a Type 1 survivorship curve?
Examples. Examples of populations with Type I survivorship include humans in developed countries and animals in zoos. A lot of effort is invested in each individual, resulting in high survivorship throughout the life cycle: Most individuals die of old age.
Which curve show an equal chance of dying regardless of age?
What do survivorship curves display quizlet?
A survivorship curve is a graph showing the number or proportion of individuals surviving to each age for a given species or group (e.g. males or females).