Researchers Studying Succession in Three Forest Sites Want to Determine

question 61

Essay

Researchers studying succession in three forest sites want to determine how similar the forests are in terms of species composition. Using Jaccard's index, rate the similarity of the three forests (A, B,
C). Show your calculations.

$$\begin{array} { | l | l | l | l | } \hline \text { Tree Species } & \text { Forest A } & \text { Forest B } & \text { Forest C } \\\hline \text { Acer saccharum } & \mathrm { X } & \mathrm { X } & \\\hline \text { Fagus grandifolia } & \mathrm { X } & \mathrm { X } & \mathrm { X } \\\hline \text { Quercus rubra } & \mathrm { X } & & \mathrm { X } \\\hline \text { Quercus alba } & \mathrm { X } & & \mathrm { X } \\\hline \text { Acer rubrum } & \mathrm { X } & \mathrm { X } & \\\hline \text { Prunus serotina } & & \mathrm { X } & \\\hline \text { Liriodendron tulipifera } & \mathrm { X } & \mathrm { X } & \\\hline \text { Carya ovata } & \mathrm { X } & & \mathrm { X } \\\hline\end{array}$$

---

Definitions:

Borderline Personality Disorder

An ailment of psychological health manifested through shifting moods, behavior patterns, and relational ties.

Dependent Personality Disorder

A personality disorder characterized by a pattern of clinging and obedience, fear of separation, and an ongoing need to be taken care of.

Dependent Personality Disorder

A psychiatric condition characterized by an excessive need to be taken care of, leading to submissive and clinging behavior and fears of separation.

Obsessive-Compulsive Disorder

A mental disorder where people feel the need to check things repeatedly, perform certain routines repeatedly, or have certain thoughts repeatedly, causing significant distress or impairment.