School of thousands of juvenile <i>Siganus luridus</i> at Kas, Turkey, after a massive recruitment event in September 2009.

<p>School of thousands of juvenile <i>Siganus luridus</i> at Kas, Turkey, after a massive recruitment event in September 2009.</p

Location of study sites.

<p>Location of study sites.</p

Infralittoral barrens at 10 m depth near Kas, Turkey, May 2008.

<p>Note the absence of erect algae and sea urchins.</p

Biomass of fish trophic groups (g m⁻²; mean ± S.E., n = 6) and percentage of total fish biomass at the three study sites.

<p>Biomass of fish trophic groups (g m⁻²; mean ± S.E., n = 6) and percentage of total fish biomass at the three study sites.</p

Percent occurrence of major taxa found on oil platforms in Gabon.

<p>The mean is the percentage of the sub-quadrats were the taxa was observed. % freq. is the percentage of platforms upon which this taxon was observed (n = 10).</p

Non-metric multidimensional scaling plot of benthic communities and fish assemblages associated with oil platforms in Gabon.

<p>Vectors are the primary taxa driving the ordination (Pearson Product movement correlations ≥0.9). A. benthic communities species codes: Ar.lixu  =  <i>Arbacia lixula v. africana</i>, Ceram  =  <i>Ceramiaceae</i> unidentified, Di.list  =  <i>Diplosoma listerianum</i>, Eu.trib  =  <i>Eucidaris tribuloides v. africana</i>, Liss  =  <i>Lissoclinum</i> sp., Me.tini  =  <i>Megabalanus tintinnabulum</i>, Poly  =  Polyclinidae unidentified, Pt.atla  =  <i>Pteria atlantica</i>, Tubas  =  <i>Tubastraea</i> sp. B. Fish assemblage species codes: Ab.saxa  =  <i>Abudefduf saxatilis</i>, Ky.sp  =  <i>Kyphosus</i> sp., My.jaco  =  <i>Myripristis jacobus</i>, Op.sp  =  <i>Ophioblennius</i> sp., Pa.furc  =  <i>Paranthias furcifer</i> Sp.mela  =  <i>Spicara melanurus</i>.</p

An exclusion cage at Kas in August 2009, five months after the beginning of the experiment.

<p>Inside the cage there is a well-developed algal assemblage, in contrast to the surroundings where only a few <i>Padina pavonica</i> stand out.</p

Experimental cages and surroundings, like this one at Kas, Turkey, were cleaned up by juvenile <i>Siganus</i> within a month.

<p>Experimental cages and surroundings, like this one at Kas, Turkey, were cleaned up by juvenile <i>Siganus</i> within a month.</p

Evolution of total algal biomass inside the fish exclusion cages and controls (mean ± S.E., n = 12) at the three study sites.

<p>Evolution of total algal biomass inside the fish exclusion cages and controls (mean ± S.E., n  = 12) at the three study sites.</p

Conditional effects of Monte-Carlo permutation results on the redundancy analysis (RDA).

<p>Variables in bold are significantly correlated with the RDA axes.</p