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In recent years, the presence of urban wildlife has increased in many cities around the world, with the consequent increase of human-animal relations. The city of Genoa (NW Italy) is a particularly complex case study where such phenomena are associated with rural depopulation of the surrounding countryside and spontaneous rewilding processes that have led several animal species to approach urban areas in search of new spaces. This paper deals with human-wildlife interactions in Genoa in relation to the geography of the city by way of a survey circulated throughout Genoa. Drawing from survey data, the research investigates residents' perceptions and understanding of urban wildlife in relation to their area of residency with a focus on wild boars. People's responses show that some areas of the city have a higher level of interaction with wildlife, and this partly affects the way in which such phenomena are perceived and tolerated by the population. In addition, the results show that there is no clear opposition towards urban wildlife and that people are concerned about sustainable forms of urban planning to the benefit of both residents and wildlife. • Rewilding processes involve both rural and urban areas of Liguria (NW Italy). • In recent times city of Genoa (NW Italy) has seen a progressive increase of wildlife. • Intensity of human-animal interactions varies in relation to people's area of residency. • People are concerned about public safety and good quality of urban environments but also animal welfare. [ABSTRACT FROM AUTHOR]

During the Messinian, the sensitivity of the Mediterranean Basin to ecosystem perturbation was enhanced in response to the progressive restriction of water exchange with the Atlantic Ocean. The widespread deposition of organic-rich layers (i.e. sapropel) during the Messinian testifies the perturbation of the carbon and oxygen cycles; indeed, these sediments were deposited under conditions of oxygen starvation, presumably in response to a periodic deterioration of the thermohaline circulation strength. Disentangling the causes, the effect and magnitude of the thermohaline circulation weakening during the geological past is crucial for better constraining present and near-future deoxygenation dynamics in the Mediterranean region under the current climate warming. For this purpose, we investigate a Messinian sapropel-bearing succession cropping out at Monte dei Corvi (Ancona, central Italy) with mineralogical, petrographic, micropaleontological and stable Carbon and Oxygen isotopic analyses. We show that sapropel layers were deposited in response to an increase of the sea surface buoyancy, which hampered the thermohaline circulation and thus the oxygenation of bottom water, in turn affecting the bioturbating organisms. Within the lithological cycle, the recovery of an efficient thermohaline circulation is recorded by thin packstone layers underlying the marly limestone/marlstone, which record intense bottom currents. The marly limestone/marlstone accumulated during periods of intense primary productivity and organic carbon export to the sea bottom, which promoted bottom hypoxia but not organic matter preservation. We infer that these lithological changes resulted from variations in the Adriatic Deep Water formation system, controlled by precession-driven climatic and oceanographic changes. By integrating previously published Sea Surface Temperature (SST) with new isotopic and mineralogical data, we show that variations in Sea Surface Salinity (SSS) were the leading factor controlling sapropel deposition, minimizing the role of primary productivity. The SSTs characterizing the sapropel deposits are close to the range of those projected in the Eastern Mediterranean at the end of this century under climate warming. In this scenario, future warming will be coupled with SSS increase, which will counteract the density loss provided by temperature, making the bottom deoxygenation in the Eastern Mediterranean abysses unlikely. However, additional forcing, such as winter heat waves and eutrophication, could contribute to negatively affecting the Mediterranean oxygen balance and should be considered in model-based projections. • The Monte dei Corvi recorded the changes in the ADW formation during the Messinian. • The bottom deoxygenation resulted from variations in the freshwater input. • Future deoxygenation in Mediterranean can be provided by productivity or heatwaves. [ABSTRACT FROM AUTHOR]

In the challenge of mitigating greenhouse gases produced mainly by fossil fuels, the recovery of agricultural and food waste to produce biohydrogen by dark fermentation is considered a promising source for the future. However, industrial-scale production remains challenging and several parameters significantly influencing the application of the technology need to be finely tuned. In the present study, an evaluation of the production of biohydrogen from cassava and pineapple waste, widely available in many African countries, was carried out using different microbial consortia originating from industrial biogas plants in Italy. The production of biohydrogen was defined both by screening the most appropriate inoculum and by using a "centered composite design" to optimize the inoculum pretreatment time and the pH. From cassava waste, which is abundant of starch (43%), the highest hydrogen levels (62.32 mL H 2 /gVS) were obtained at pH 7.72 adopting a 4-h heat treated inoculum originating from an anaerobic digester fed with corn and barley silage. Higher hydrogen yields (75.50 mL H 2 /gVS) were achieved at pH 6 once pineapple, which has a high content of hemicellulose, was converted by another selected inoculum, isolated from an olive pomace treating plant, where hemicellulose is one of the most common polysaccharide. The correlation coefficients R2 and adjusted R2 are close to unity, proving the model to be appropriate to express the concentration of hydrogen produced. This combined approach performed successfully and represents a strong strategy to optimize the production of biohydrogen from agricultural residues even in African contexts. [Display omitted] • African residues are good candidates for biohydrogen production. • Response surface methodology optimized bio-H 2 yields. • The selection of proper inoculum is decisive for bio-H 2 production. • Inoculum treatment and pH are major factors for bio-H 2 production. • Cassava and pineapple were converted up to 62 and 75 mL H 2 /gVS, respectively. [ABSTRACT FROM AUTHOR]