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Structural and functional variations in macrobenthic assemblages impacted by fishing dredges in the soft bottoms of the southern Adriatic Sea during the COVID-19 lockdown

Macrobenthic assemblages on shallow soft bottoms exploited by fishing hydraulic dredges in the Gulf of Manfredonia (Southern Adriatic Sea) were investigated before the COVID-19 lockdown (2018–2019) and during the fishing closure caused by lockdown restrictions (June 2020). Standardized abundance data (N/100m2) of benthic species from fishery-independent monitoring surveys were analysed. Fishing effort and environmental variables were obtained from fishermen’s reports and the Copernicus Marine...

Field performance of innovative wood protection treatments on early successional macrofouling communities

Marine biofouling has long threatened the integrity of wooden structures commonly used in coastal and sensitive lagoon areas. To improve softwood durability while minimising environmental impacts, innovative antifouling treatments (i.e. Silvanolin® and thermal modification (TM)) have been developed as alternatives to traditional copper-based products. In this study, we assessed and compared the in-situ performance of these innovative treatments with the commercially available copper-based chr...

Coexisting with the alien: Evidence for environmental control on trophic interactions between a native (Atherina boyeri) and a non-indigenous fish species (Gambusia holbrooki) in a Mediterranean coastal ecosystem

Biological invasions are a widespread problem worldwide, as invasive non-indigenous species (NIS) may affect native populations through direct (e. g., predation) or indirect (e.g., competition) trophic interactions, leading to changes in the food web structure. The trophic relationships of the invasive eastern mosquitofish Gambusia holbrooki and the native big-scale sand smelt Atherina boyeri coexisting in three Mediterranean coastal ponds characterized by different trophic statuses (from oli...

MAF biodiversity measurements: Species, ecosystem, and genetic

Biodiversity operates across multiple levels of biological organization, encompassing genes, species, and ecosystems. It plays a crucial role in sustaining ecological resilience and delivering essential services such as food and clean water. Higher biodiversity enhances the ability of ecosystems to withstand and recover from disturbances. Monitoring biodiversity is therefore vital for assessing ecosystem health, identifying imbalances, and preserving these critical services. Within the oceani...

Benthic megafauna and the functioning of macroalgal forests and urchin barrens

Two temperate rocky reef food-web models, representing the trophic diversity of the Mediterranean rocky reef communities, were built for the two stable states: macroalgal forests and barren grounds, which are characterized by opposite amounts of erect macroalgal biomass. The food webs described here include 46 functional nodes or groups (comprising auto- and heterotroph species) and elucidate how the loss of erect macroalgal biomass from rocky reefs modifies the trophic roles of the different...

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