Visitors   Views   Downloads
NOT PEER-REVIEWED
"PeerJ Preprints" is a venue for early communication or feedback before peer review. Data may be preliminary.

Supplemental Information

Appendix 1

Field sampling protocol for divers

DOI: 10.7287/peerj.preprints.27557v1/supp-1

Dive transect data

All data collected during dive transects: habitat descriptors over transects, algae morphotype cover, fish abundances and estimated sizes

DOI: 10.7287/peerj.preprints.27557v1/supp-2

Appendix 2

Conversion formula of invertebrate taxa length to weight citing source litrature

DOI: 10.7287/peerj.preprints.27557v1/supp-3

Length mass conversion of invertebrate fauna of algae

Length mass conversions used for the invertebrate fauna within algae morphotypes. The final equations can also be found summarized in the supplementary material. Relationship for a taxonomic group were sometimes derived from equations or data from various species available in the published litrature. In this case a mean relationship was used to derive the taxonomic group equation.

DOI: 10.7287/peerj.preprints.27557v1/supp-4

Algae associated fauna

Associated fauna of different algae morphotypes collected from algae cuttings. Density and body size of taxa identified.

DOI: 10.7287/peerj.preprints.27557v1/supp-5

Data of prey sizes from fish stomach samples

Dataset of prey sizes by taxonomic groups found within stomach samples of the three study species.

DOI: 10.7287/peerj.preprints.27557v1/supp-6

Length and weight of juvenile fish caught with handnets

Length and weight of juvenile fish caught with handnets.

DOI: 10.7287/peerj.preprints.27557v1/supp-7

PCA general results

PCA eigenvalues and percentage and cumulative percentage of variation explained by PCA axis in algae morphotype cover over dive transects corresponding to figure 3

DOI: 10.7287/peerj.preprints.27557v1/supp-8

Average squared distance between transects

Average squared distance between transects belonging to tested seasons and Islands sampling events. Shaded boxes show average squared distance between transects within season and island grouping. The lager the average squared distance the more dissimilar are the dive transect groupings with respect to their algae cover composition. Bold numbers are representing the highest values measured indicating that transects sampled in summer in Menorca were distinct from the other sampling seasons.

DOI: 10.7287/peerj.preprints.27557v1/supp-9

Results of the distance based linear model (DistLM)

Results of the distance based linear model DistLM relating environmental variables to the PCA ordination shown in Figure 3.

DOI: 10.7287/peerj.preprints.27557v1/supp-10

Results ANOVA size of morphotypes

Results of two-way variance analysis on the size of morphotypes and the effect of season tested for both Islands Mallorca and Menorca. Test were run on log transformed height in cm

DOI: 10.7287/peerj.preprints.27557v1/supp-11

Post-hoc Tukey test size of morphotypes

Results of the post-hoc Tukey test related to the analyses performed in table S11. Differences in the same morphotypes between seasons in the tow islands and differences between morphotypes within seasons.

DOI: 10.7287/peerj.preprints.27557v1/supp-12

Taxa composition of associated fauna by morphotypes

Mean abundance (0.062 m2) and percentage contribution of dominant taxa inhabiting different morphotypes

DOI: 10.7287/peerj.preprints.27557v1/supp-13

Results of the one way ANOVA prey availabiltity

Results of the one way ANOVA comparing prey availabiltiy within different algae morphotypes

DOI: 10.7287/peerj.preprints.27557v1/supp-14

Post-hoc turkey test prey availability

Results of the pairwise comparisons between prey availability (abundance and biomass) in different algae morphotypes for the three study fish species from the post-hoc turkey test. For the original one-way ANOVA analysis results see S14.

DOI: 10.7287/peerj.preprints.27557v1/supp-15

Abundance and Biomass of invertebrate community per algae morphotype

Abundance (0.062 m2) and estimated biomass (AFDW mg per 0.062 m2) of invertebrate fauna associated to different algae morphotypes collected in spring (May 2014) and summer (August 2014) in Mallorca and Menorca. Error bar are S.E.

DOI: 10.7287/peerj.preprints.27557v1/supp-16

Additional Information

Competing Interests

Andrew F. Johnson is an employee of MarFishEco.

Author Contributions

Hilmar Hinz conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Olga Reñones conceived and designed the experiments, performed the experiments, analyzed the data, authored or reviewed drafts of the paper, approved the final draft.

Adam Gouraguine performed the experiments, analyzed the data, authored or reviewed drafts of the paper, approved the final draft.

Andrew F Johnson performed the experiments, authored or reviewed drafts of the paper, approved the final draft.

Joan Moranta conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, authored or reviewed drafts of the paper, approved the final draft.

Data Deposition

The following information was supplied regarding data availability:

All raw data are uploaded in supplementary files 1-4 containing visual census data, stomach content data, invertebrate fauna data (size), fish size data from subsample catches, length-biomass conversions for invertebrate fauna.

Funding

This research received funding through the FP7-People IEF - Marie-Curie Action project LINKFISH (299552) “Investigating the link between sub-littoral algae habitats and fish communities in the Mediterranean Sea”. During part of the write-up of this work H Hinz was supported by the Ramón y Cajal Fellowship (grant by the Ministerio de Economía y Competitividad de España and the Conselleria d’Educacio´, Cultura i Universitats Comunidad Auto´noma de las Islas Baleares) and AF Johnson was supported by NSF grant DEB-1632648 (2016-18). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


Add your feedback

Before adding feedback, consider if it can be asked as a question instead, and if so then use the Question tab. Pointing out typos is fine, but authors are encouraged to accept only substantially helpful feedback.

Some Markdown syntax is allowed: _italic_ **bold** ^superscript^ ~subscript~ %%blockquote%% [link text](link URL)
 
By posting this you agree to PeerJ's commenting policies