Temporal and spatial patterns of trawl fishing activities in the Adriatic Sea (Central Mediterranean Sea, GSA17)

Russo, Elisabetta; Monti, Marco Anelli; Mangano, Maria Cristina; Raffaetà, Alessandra; Sarà, Gianluca; Silvestri, Claudio; Pranovi, Fabio

doi:10.1016/j.ocecoaman.2020.105231

Cited by 32 publications

(26 citation statements)

References 34 publications

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“…In the case of the demersal fishery in the Adriatic Sea, the cluster analysis highlights that a few resources were characterizing the catch assemblages of each gear, except for ITA_PGP and ITA/HRV_DTS, which resulted to be the more generalists. The fact that these fleets showed the most diversified assemblage compared with the other gears reflected the modus operandi of these fisheries: ITA_PGP seasonally switches gears and grounds following resource availability (Grati et al, 2018), while the DTS footprint is by far the larger in the area (Russo et al, 2020), spreading across the spatial range of many different species. In contrast, Although the Adriatic sea is one of the most intensively trawled area of the Mediterranean sea (Eigaard et al, 2017;Ferrà et al, 2018) and in the entire world (Amoroso et al, 2018), some of the stocks analyzed showed an increase in biomass at the end of the analysis time-scale (evident in the single-species Kobe plot trajectory toward the recovery area).…”

Section: Discussionmentioning

confidence: 99%

Data Poor Approach for the Assessment of the Main Target Species of Rapido Trawl Fishery in Adriatic Sea

et al. 2021

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Information on stock status is available only for a few of the species forming the catch assemblage of rapido fishery of the North-central Adriatic Sea (Mediterranean Sea). Species that are caught almost exclusively by this gear, either as target (such as Pectinidae) or accessory catches (such as flatfishes apart from the common sole), remain unassessed mainly due to the lack of data and biological information. Based on cluster analysis, the catch assemblage of this fishery was identified and assessed using CMSY model. The results of this data-poor methodology showed that, among the species analyzed, no one is sustainably exploited. The single-species CMSY results were used as input to an extension of the same model, to test the effect of four different harvest control rule (HCR) scenarios on the entire catch assemblage, through 15-years forecasts. The analysis showed that the percentage of the stocks that will reach Bmsy at the end of the projections will depend on the HCR applied. Forecasts showed that a reduction of 20% of fishing effort may permit to most of the target and accessory species of the rapido trawl fishery in the Adriatic Sea to recover to Bmsy levels within 15 years, also providing a slight increase in the expected catches.

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Section: Discussionmentioning

confidence: 99%

Data Poor Approach for the Assessment of the Main Target Species of Rapido Trawl Fishery in Adriatic Sea

et al. 2021

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“…For its high level of productivity, mainly due to the presence of river estuaries, the Northern and Central Adriatic Sea (GSA17) is recognised to be intensively exploited by multi-gear and multispecific fisheries (Barausse et al, 2009;Pranovi et al, 2015;Fortibuoni et al, 2017;Russo et al, 2020).…”

Section: Study Area and Fishing Fleetsmentioning

confidence: 99%

“…The Northern and Central Adriatic Sea (GSA17), enclosed among Italy, Croatia, and Slovenia, is well-known to be an intensively exploited basin (Barausse et al, 2009;Pranovi et al, 2015;Fortibuoni et al, 2017;Russo et al, 2020) where a powerful fleet, composed of small-scale and industrial vessels, operates. For these reasons, this area and fleet represent an interesting case study to assess the COVID-19 effects on the fishery sector.…”

Section: Introductionmentioning

confidence: 99%

“…The importance to use vessel tracking tools, such as the Automatic Identification System (AIS), in the scientific field to monitor and assess the fishing activities, was already pointed out in previous works (e.g., Natale et al, 2015;de Souza et al, 2016;Vespe et al, 2016;Ferrà et al, 2018;Russo et al, 2020). The AIS system, introduced by the International Maritime Organisation (IMO) and designed for security purposes (e.g., navigational aid to avoid vessel collisions), provides vessel positions with high temporal frequency (from 2 seconds to few minutes) and information such as length overall (LOA), speed, and vessel name.…”

Section: Introductionmentioning

confidence: 99%

“…The AIS system, introduced by the International Maritime Organisation (IMO) and designed for security purposes (e.g., navigational aid to avoid vessel collisions), provides vessel positions with high temporal frequency (from 2 seconds to few minutes) and information such as length overall (LOA), speed, and vessel name. Since the coverage of the AIS signals in the Adriatic Sea is very high (Russo et al, 2020), the use of AIS data for the assessment of the fishing activities and behaviours of fishers during this unexpected period turned out to be very useful.…”

Section: Introductionmentioning

confidence: 99%

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Lockdown: How the COVID-19 Pandemic Affected the Fishing Activities in the Adriatic Sea (Central Mediterranean Sea)

et al. 2021

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The coronavirus disease 2019 (COVID-19) has brought a global socio-economic crisis to almost all sectors including the fishery. To limit the infection, governments adopted several containment measures. In Italy, Croatia, and Slovenia, a lockdown period was imposed from March to May 2020, during which many activities, including restaurants had to close or limit their business. All of this caused a strong reduction in seafood requests and consequently, a decrease in fishing activities. The aim of this study is to investigate the effects of the COVID-19 in the Northern and Central Adriatic fleet, by comparing the fishing activities in three periods (before, during, and after the lockdown) of 2019 and 2020. The use of the Automatic Identification System (AIS) data allowed us to highlight the redistribution of the fishing grounds of the trawlers, mainly located near the coasts during the 2020 lockdown period, as well as a reduction of about 50% of fishing effort. This reduction resulted higher for the Chioggia trawlers (−80%) and, in terms of fishing effort decrease, the large bottom otter trawl was the fishing segment mainly affected by the COVID-19 event. Moreover, by analysing the landings of the Chioggia fleet and the Venice lagoon fleets, it was possible to point out a strong reduction both in landings and profits ranging from −30%, for the small-scale fishery operating at sea, to −85%, for the small bottom otter trawl.

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Speaking Deads: Sea Turtle Mortality Areas and Fisheries Overlaps Identified Through Backtracking of Stranded Carcasses in the Adriatic Sea

Agabiti,

Zanetti,

Quattrocchi

et al. 2024

Aquatic Conservation

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Interaction with fishing gears represents the main anthropogenic threat at sea for sea turtles worldwide, and identifying the hotspots of turtle bycatch is a priority knowledge gap. Turtle stranding data represent a source of information about mortality areas at sea that are not fully exploited. This study aims to infer turtle mortality areas of turtles stranded along the Italian Adriatic Coast in the period 2019–2021 (1432 records), through backtrack modelling of carcasses. Specifically, the decomposition process of eight loggerhead carcasses was monitored, and the relationship between floating period (FP), turtle size and sea temperature was modelled through a generalized additive model. Oceanographic information was then used to track the routes of floating carcasses back, knowing their size and decomposition stage, and finally estimate the likely area of mortality. A complementary numerical experiment of connectivity between coastal and offshore areas gave indication that areas of potential mortality are relatively close to the coast, particularly in the northern Adriatic. Stranded turtles probably represent just a small fraction (17%–25%) of total at‐sea mortalities in the study area (Italian Adriatic waters), with decomposition rates, season and distance from shore influencing their stranding likelihood. Hence, strandings can inform only about spatio‐temporal variability of coastal mortality hotspots. Inferred areas of turtle mortality were most likely located in the North and Central Adriatic all over the year and overlap with heatmaps of fishing effort, obtained from vessel monitoring system (VMS) and automatic identification system (AIS) data, in the Gulf of Manfredonia and in the North‐West Adriatic in the cold (September–December) and warm (May–August) periods, respectively.

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Temporal and spatial patterns of trawl fishing activities in the Adriatic Sea (Central Mediterranean Sea, GSA17)

Cited by 32 publications

References 34 publications

Data Poor Approach for the Assessment of the Main Target Species of Rapido Trawl Fishery in Adriatic Sea

Data Poor Approach for the Assessment of the Main Target Species of Rapido Trawl Fishery in Adriatic Sea

Lockdown: How the COVID-19 Pandemic Affected the Fishing Activities in the Adriatic Sea (Central Mediterranean Sea)

Speaking Deads: Sea Turtle Mortality Areas and Fisheries Overlaps Identified Through Backtracking of Stranded Carcasses in the Adriatic Sea

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