Effect of habitat engineering on branch colonization frequency by secondary colonizers.

<p>Data analyses were performed through a generalized linear model with a binomial distribution and a logit link function using a GLIMMIX procedure in SAS.</p

Arthropod community composition in detached <i>Spondias purpurea</i> branches.

<p>OE  =  <i>O. albomarginata chamela</i>-engineered branches; SE  =  simulated-engineered branches; and NE  =  non-engineered branches. Each point is a two-dimensional (axis 1 and axis 2) representation of the arthropod community composition on an individual branch based on global non-metric multidimensional scaling (NMDS) analysis (stress  = 0.19).</p

Branch colonization frequency by secondary colonizers.

<p>Non-engineered branches are represented by white bars (NE); simulated-engineered branches by gray bars (SE); and <i>O. albomarginata chamela</i>- engineered branches by black bars (OE). Values are the percentage of branches colonized. Different letters indicate significant differences (P<0.05) between the frequencies of branch colonization of the treatments.</p

Abundance of secondary colonizers that emerged from <i>Spondias purpurea</i> detached branches.

<p>Bars indicate LSMeans (±SE) of the number of secondary colonizers that emerged per <i>S. purpurea</i> branch in the three studied years. White bars indicate non-engineered branches (NE); gray bars indicate simulated-engineered branches (SE); and black bars indicate <i>O. albomarginata chamela</i>-colonized branches (OE). Different letters indicate significant differences between treatments (P<0.05).</p

Secondary colonizers that emerged from <i>Spondias purpurea</i> branches detached and colonized by <i>Oncideres albomarginata chamela</i>.

<p>*Not recorded in 2007;</p>†<p>Life form I;</p>‡<p>Life form II;</p>§<p>Not recorded in non-engineered branches (NE); ND  = not determined. Abundance values are means across the three years (±SD).</p