w</span>(ab.df)</span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a>ab.df <span class="ot">&lt;-</span> tidyr<span class="sc">::</span><span class="fu">gather</span>(ab.df,<span class="at">key =</span> <span class="st">&quot;sp&quot;</span>,<span class="at">value =</span> <span class="st">&quot;abund&quot;</span>,<span class="sc">-</span>timestep)</span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a>abund.plot <span class="ot">&lt;-</span> ggplot2<span clas