Assessing the Physical Disturbance on the Seabed From Fisheries in the Bulgarian Black Sea Area With Reference to Benthic Habitats Status

Тодорова, Валентина; Panayotova, Marinela; Doncheva, Valentina; Zlateva, Ivelina

doi:10.5593/sgem2021/3.1/s15.83

Cited by 4 publications

(3 citation statements)

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“…Assessing the sustainability of the impact of beam trawling on benthic species is integral to an ecosystem-based approach to fishery management. Bottom-dwelling species play a vital role in benthic-pelagic coupling, facilitating the transfer of organic matter from the water column to the seabed, representing a crucial food source for demersal fish [61,63,64]. Beam trawling, increasingly common along the Romanian coast in recent years, is considered highly disruptive.…”

Section: Description Of Pressures and Irmentioning

confidence: 99%

Spatial Cumulative Assessment of Impact Risk-Implementing Ecosystem-Based Management for Enhanced Sustainability and Biodiversity in the Black Sea

Bisinicu,

Abaza,

Boicenco

et al. 2024

Sustainability

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Marine ecosystems are becoming increasingly vulnerable to cumulative anthropogenic effects and pressures. Therefore, various methodological approaches and tools have been designed to apply cumulative impact appraisal schemes and better assess the dynamics and interactions among pressures affecting marine ecosystems. This study aims to apply the Spatial Cumulative Assessment of Impact Risk for Management (SCAIRM) tool for the Black Sea coastal waters considering human activities, pressures, and effects on different ecosystem components coupled with one management scenario development for actual and new emerging sectors. According to the SCAIRM, the primary pressure on the marine ecosystem was identified as introducing or spreading non-indigenous species from shipping. Additionally, when considering cumulative impact, activities related to coastal defense and flood protection, particularly beach nourishment works, were found to have the highest impact. This is due to the cumulative scores associated with the physical loss from permanent alteration or removal of seabed substrates, and temporary or reversible physical disturbances to the seabed. The scenario development indicated that after shipping, oil and gas exploitation is anticipated to become the second-highest risk sector for additional impact in the Romanian Black Sea. Additionally, the increased military activities related to the war in Ukraine present escalating risks that must be considered in EBM strategies. The results assess the possible effects of human activities and the associated pressures to direct management toward achieving sustainability, biodiversity protection, and the marine ecosystem’s integrity.

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Section: Description Of Pressures and Irmentioning

confidence: 99%

Spatial Cumulative Assessment of Impact Risk-Implementing Ecosystem-Based Management for Enhanced Sustainability and Biodiversity in the Black Sea

Bisinicu,

Abaza,

Boicenco

et al. 2024

Sustainability

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“…Fishing pressure by beam trawling was calculated by using Vessel Monitoring System (VMS) data (yearly kilometers of each vessel authorized by the National Agency for Fisheries and Aquaculture-NAFA), buffered with the average gear width and aggregated to calculate the swept area by dividing it to the total area of the extended zone of ROSCI0066, adapting the existing Swept Area Ratio (SAR) methodology [31,36], according to the formula: SAR = Towed gear distance covered (km) × Gear width (km)/Total area investigated (km 2 ) Vessel monitoring system (VMS) data were accessed and analyzed to reconstruct the trawling lines of Romanian vessels > 12 m equipped with beam trawls for the period 2015-2022. The development of VMS as a surveillance and law enforcement tool transformed the study of fishing activity and footprints [37], offering total or nearly complete coverage of targeted fleets as well as high-resolution information on the positions of specific fishing vessels [38].…”

Section: Calculating Fishing Pressurementioning

confidence: 99%

“…In 2013, the use of the towed fishing gear beam trawl for the industrial exploitation of the rapa whelk was legalized in Romania, and, since then, these fishing gears have been extensively used in the center and northern part of the Romanian coast, on sandy and muddy substrates [30]. Moreover, circalittoral muds (extremely soft bottoms) are documented to be the habitat type most affected by mobile bottom-contacting gears (MBCG), beam trawls included [18,31].…”

Section: Introductionmentioning

confidence: 99%

An Assessment of Potential Beam Trawling Impact on North-Western Black Sea Benthic Habitats Aiming at a Sustainable Fisheries Management

Nenciu

Niță

Teacă

et al. 2023

Water

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The North-Western Black Sea shelf is extremely vulnerable to disturbances of its habitats and ecosystems. In the past 10 years, this area has become targeted by beam trawl fisheries for the invasive gastropod Rapana venosa (Valenciennes, 1846), with a potentially destructive impact on the area’s soft bottoms. Not many studies have been performed in the region, and most investigations have focused on gear selectivity and by-catch rates. In this context, our novel research aimed, on the one hand, to assess and quantify the actual impact of beam trawling and, on the other hand, to propose effective spatial/temporal management measures for a sustainable zonation of the North-Western Black Sea shelf (marine zone of the Danube Delta Biosphere Reserve). The methodology used integrated beam trawl catch dynamics information, VMS data, geophysical investigations, and macrozoobenthos sampling. Our findings show that beam trawling activities can cause changes in the benthic habitat structure (lower number of taxa, lower values of ecological indicators, and an overall non-GES status). Further in-depth investigations are needed to underpin the ecosystem-based management of this marine protected area (MPA), aiming to allow the recovery of the affected benthic habitats, by alternating defined areas undergoing fishing with biological recovery polygons.

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Ecosystem Service Bundles Highlight Multiple Trade-Offs for Marine Spatial Planning in the Western Black Sea

Pellowe,

De Cervo,

Laznya

et al. 2023

Preprint

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Assessing the Physical Disturbance on the Seabed From Fisheries in the Bulgarian Black Sea Area With Reference to Benthic Habitats Status

Cited by 4 publications

References 0 publications

Spatial Cumulative Assessment of Impact Risk-Implementing Ecosystem-Based Management for Enhanced Sustainability and Biodiversity in the Black Sea

Spatial Cumulative Assessment of Impact Risk-Implementing Ecosystem-Based Management for Enhanced Sustainability and Biodiversity in the Black Sea

An Assessment of Potential Beam Trawling Impact on North-Western Black Sea Benthic Habitats Aiming at a Sustainable Fisheries Management

Ecosystem Service Bundles Highlight Multiple Trade-Offs for Marine Spatial Planning in the Western Black Sea

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