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Additional Information

Competing Interests

The authors declare they have no competing interests.

Author Contributions

Simone Farina conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables.

Silvia Oliva conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Ivan Guala conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Rodrigo Silva performed the experiments, contributed reagents/materials/analysis tools.

Luigi Piazzi performed the experiments, contributed reagents/materials/analysis tools.

Matteo Spanu performed the experiments, contributed reagents/materials/analysis tools.

Giulia Ceccherelli conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Field Study Permissions

The following information was supplied relating to field study approvals (i.e., approving body and any reference numbers):

Consorzio di Gestione Area Marina Protetta di Tavolara Punta Coda Cavallo gave permission for field work in the Marine Protected Area.

Funding

This study was funded by RAS Legge 7 grant (CRP49692) “Approccio integrato per la tutela, la gestione e la valorizzazione della risorsa riccio di mare in Sardegna”. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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