al diversity at different sampling
locations. <samp>breakaway</samp> estimates are suggested in the high-diversity
case but not enforced.</p></td>
    </tr>
    <tr>
      <th>ses</th>
      <td><p>The standard errors in <code>chats</code>, the diversity estimates. This
can either be a vector of standard errors (with the arguments <code>chats</code> and
<code>X</code>), or the name of the variable in the dataframe <code>data</code> that contains
the standard errors (with the arguments <code>formula</code> a