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- Reducing cetacean interactions with bottom set‐nets and purse seining using acoustic deterrent devices in Southern IberiaPublication . Marçalo, Ana; Carvalho, Flávia; Frade, Magda; Bentes, Luis; Monteiro, Pedro; Pontes, João; Ferreira Alexandre, Teresa Sofia; Oliveira, Frederico; Kingston, Allen; Erzini, Karim; Gonçalves, Jorge Manuel SantosIn southern Iberia (NE Atlantic), cetacean bycatch is reported in several fisheries, whereas depredation by bottlenose dolphin (Tursiops truncatus) is commonly observed in bottom set-net fisheries. This study tested the effectiveness of acoustic deterrent devices in discouraging small cetaceans from approaching bottom set-nets and purse seine to reduce interactions. The acoustic deterrent devices used in the study were dolphin deterrent devices and dolphin interactive devices for the bottom set-net fishery to reduce dolphin bycatch and depredation and dolphin deterrent devices in the purse seine fishery to reduce common dolphin (Delphinus delphis) bycatch. Data collection was carried out by at-sea observers and trained fishing vessel crew observers. Hauls with and without acoustic deterrent devices were compared and analysed to investigate differences in catch per unit effort, factors affecting the interaction, probability of interaction and habituation (in bottom set-nets only). In bottom set-nets, the depredation rate was significantly lower and reduced by about 50% in hauls using acoustic deterrent devices. Habituation of the bottlenose dolphins to the devices was observed but was gradual. In the purse seine fishery, common dolphin bycatch was reduced by 100% when using the acoustic deterrent devices. Overall, the results are promising, but the different interaction reduction efficiencies observed between gear types indicate that the potential application of acoustic deterrent devices should be considered on a m & eacute;tier-by-m & eacute;tier basis. Other mitigation measures should be developed, especially for static gears, in collaboration with the fishing sector in an inclusive management approach to reduce direct interactions between fisheries and cetaceans.
- Engaging and legitimizing communities: co-designing a community-based marine protected areaPublication . Rangel, Mafalda; Horta e Costa, Barbara; Guimarães, Mª Helena; Ressurreição, Adriana; Monteiro, Pedro; Oliveira, Frederico; Bentes, Luis; Sales Henriques, Nuno; Sousa, Inês; Ferreira Alexandre, Teresa Sofia; Pontes, João; Afonso, Carlos; Belackova, Adela; Marçalo, Ana; Cardoso-Andrade, Mariana; Cortês, António; Correia, António José; Lobo, Vanda; Gonçalves, Emanuel J.; Cunha, Tiago Pitta e; Gonçalves, Jorge Manuel SantosMarine Protected Areas are increasingly used as tools to preserve marine habitats and biodiversity worldwide. Nonetheless, creating MPAs in densely populated multi-use coastal areas comes with intrinsic conflict potential, since protection and economic development are not always hand-in-hand and local users might disagree with the designation of such conservation tools. The use of inclusive and transparent participatory processes to co-design such MPAs can be seen as a way of protecting biodiversity while acknowledging the needs of local users and building conservation tools that fit both purposes. Here we describe a participatory process developed to codesign a Marine Protected Area of Community Interest in a biodiversity, fishing and tourism hotspot in the Algarve (southern Portugal) where the majority of involved stakeholders (96 %) endorsed the final MPA proposal. The methodology and tools used are described in detail, lessons learned are critically analysed and a roadmap to be used in other realities is provided. Evidences collected show that the approach developed allows conservation and economic activities to share the same ground and advocate for the same goals in preserving coastal marine habitats.
- Transforming aquatic food systems through digital traceability: a review of global challenges and opportunitiesPublication . Costa, Gisela; Pita, Cristina; Ferreira Alexandre, Teresa Sofia; Roumbedakis, Katina; Pontes, João; Hübel, Michelle; Rangel, MafaldaAquatic foods are among the most extensively traded food commodities globally, with increasingly complex supply chains and rising consumer demand for sustainable, ethically sourced, and legally compliant products. In this context traceability systems have emerged as vital tools for enhancing transparency, accountability, and resilience within these supply chains. This study presents a systematic review of the literature to identify key challenges and opportunities associated with the implementation of digital traceability systems in aquatic food supply chains. The review synthesizes evidence on diverse technologies, governance frameworks, and supply chain dynamics. The findings reveal that while technological innovation, such as blockchain and digital traceability platforms, show promising solutions for improving data management and efficiency, and enhance consumer trust, several barriers persist. These include high implementation and maintenance costs, technological barriers (e.g., complexity of data management and usability), stakeholder disinterest, unequal access to digital infrastructure, gaps in international cooperation and regulatory frameworks, and issues of system interoperability. Conversely, traceability presents multiple benefits, including enhanced supply chain efficiency, market access, stronger stakeholder collaboration, and alignment with consumer preferences for sustainable products. It also contributes to combating Illegal, Unreported, and Unregulated (IUU) fishing, enhancing fair labour practices, and promoting compliance with international standards. We conclude that inclusive, context-specific approaches (tailored to the diverse characteristics of fisheries, aquaculture, and small-scale operations) and crosssector collaboration are essential to address the challenges inherent in globalized supply chains and realize the full potential of traceability systems in advancing more sustainable, transparent, and resilient aquatic food systems.