title: Wide Format Summary in tidyverse
body: <p>Hi I have a dataframe in wide format that is grouped by <code>Site</code>. Each column represents the abundance a different species(85 total). I am trying to summarize the dataframe to calculate the total number of individuals regardless of species in my data. </p>
  
  <pre><code>df.totals&lt;- df %&gt;% group_by(Site) %&gt;% summarize (total = sum(6:91))
  </code></pre>