Conservation plays a crucial role in maintaining and restoring biodiversity and ecosystems integrity. Its importance is underscored by several policy frameworks, including the Habitats Directive (HD; 92/43/CEE), which identifies habitats and species of Community Interest for which a “favourable conservation status” must be ensured. The conservation status (CS) of these habitats and species is evaluated every six years at the n...

Aim Foundation species sustain biodiversity by providing habitat, resources, and protection from environmental stress. However, their influence on environmental severity and variability and their role in shaping diversity across spatial scales remain poorly understood. We conducted a large‐scale study to assess how environmental conditions and community diversity vary between areas with and without canopy‐forming macroalgae ac...

Recruitment is a crucial process for the recovery of coral populations after large-scale disturbances causing mass mortality events such as coral bleaching. This study examined the juvenile coral community of the remote Huvadhoo Atoll (southern Maldives, Indian Ocean) 11 years apart (2009 and 2020). Coral recruits (≤5 cm) and juveniles (5–15 cm) were surveyed at eight reef sites located in both lagoon- and ocean-facing environ...

Coral reefs are crucial ecosystems for marine biodiversity but are increasingly threatened by anthropogenic pressures and climate anomalies. The 2016 global bleaching event resulted in widespread coral mortality, altering reef structure and benthic communities. Here, we examine the evolution of Maldivian reefs from 2015 to 2023 using long-term monitoring data to assess post-disturbance dynamics. Analyses of 26 benthic descript...

Several anthropogenic factors are responsible for the decline of Cystoseira sensu lato (hereafter Cystoseira ) forests along Mediterranean coasts. Some Cystoseira species are already regionally extinct, and their decline has been widely recorded. Sustainable and efficient techniques for the restoration of Cystoseira are needed. In this context, the objectives of this study were i) to analyse the reproductive traits of three po...

Patella ferruginea is an endemic limpet of the Western Mediterranean Sea, presently considered the most threatened marine macroinvertebrate in the region and included in several international conservation directives. Its populations were widespread throughout the Western Mediterranean in the late Pleistocene (Tyrrhenian period), still largely distributed until the 19th century and presently confined into small populations in f...

During the last several decades, the Mediterranean littoral shallow water benthic communities have suffered significant changes in their structure and taxa composition. Despite numerous studies conducted to characterize these changes at various levels, it has always been very difficult to disentangle the effects of natural factors from anthropic ones. The main purpose of this work was to evaluate possible changes, over a 10‐ye...

Thresholds profoundly affect our understanding and management of ecosystem dynamics, but we have yet to develop practical techniques to assess the risk that thresholds will be crossed. Combining ecological knowledge of critical system interdependencies with a large‐scale experiment, we tested for breaks in the ecosystem interaction network to identify threshold potential in real‐world ecosystem dynamics. Our experiment with th...

The Water Framework Directive (WFD) 2000/60/EC, adopted by the European Community in 2000 with the goal of maintaining and improving the aquatic environments, requires that member states achieve and maintain a good ecological status of all water bodies by 2015. In the marine context, the ecological status has to be quantified applying indexes based on appropriate key biological elements, which allow the categorization of water...