Are turtles Type 3 survivorship curve?

Survivorship varies significantly across age-classes, with mortality generally inversely related to age (type III survivorship). Survivorship also varies significantly across habitat types, with marine and terrestrial turtles exhibiting higher survivorship early in life than freshwater turtles.

Are sea turtles Type 1 survivorship?

Survivorship data by general age-class are reviewed for 30 species of turtles representing nine families. Survivorship varies significantly across age-classes, with mortality generally inversely related to age (type I11 survivorship). Marine turtles also tend to have the lowest survivorship as adults.

What are the 3 types of survivorship curve?

There are three types of survivorship curves, and they are simply referred to as type I, type II, and type III. A type I survivorship curve shows individuals that have a high probability of surviving through early and middle life but have a rapid decline in the number of individuals surviving into late life.

Which is an example of a type I survivorship curve?

A classic example of a type I survivorship curve is the human population. Advances in medicine and technology have made the chances of surviving through early and middle life highly probably for humans.

Which is an example of a type 2 Survivor?

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.

How can I make a survivorship curve accurate?

Your survivorship curve will be as accurate as the data you have recorded. This can also be used to check the accuracy of the data. Open a new spreadsheet and fill in the heading and the columns as given in the table. Do this by selecting the cells and type in them. Number the column A from 0-11 (A43-A14).

Which is true of a type II curve?

Type II curves show a relatively linear drop in survivorship over time. Many small birds follow this type of pattern. Finally, Type III curves show a population that loses most of its population early on and then a smaller percentage live to the end of the life cycle.