Draft Fisheries Assessment – Solan Bank Reef SAC: Fisheries management measures within Scottish Offshore Marine Protected Areas (MPAs)

These assessments look at the fishing activity occurring within each offshore MPA and SAC and assess the potential impacts of this activity on the protected features within each site. This assessment is for Solan Bank Reef SAC.


2 Part A Assessment – Fisheries screening

2.1 Fisheries screening overview

Part A of this assessment meets the ‘likely significant effect (LSE)’ test under Article 6(3) of Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora (the Habitats Directive); for sites within the offshore region under Regulation 28 of the Conservation of Offshore Marine Habitats and Species Regulations 2017; and for sites within the inshore region under Regulation 48(1) of the Conservation (Natural Habitats, & c.) Regulations 1994. The test for likely significant effect under Regulation 28(2)(b) of the Conservation of Offshore Marine Habitats and Species Regulations 2017 and Regulation 48(1) of the Conservation (Natural Habitats, & c.) Regulations 1994 is not required for activities which are directly connected with or necessary to the management of the site. Fishing activities are not considered to be directly connected with or necessary to the management of the site unless otherwise indicated.

In line with the guidance within EU Commission guidance on the Assessment of plans and projects significantly affecting Natura 2000 sites; a methodological guidance on the provisions of Article 6 (3) and (4) of the Habitats Directive 92/43/EEC, this assessment considers an LSE as any effect that may reasonably be predicted as a consequence of a plan or project that would negatively and significantly affect the conservation objectives established for the protected habitats and species of the protected area. If any likely significant effect of a plan or project cannot be excluded beyond reasonable doubt, then a full appropriate assessment should be undertaken.

In Part A of this assessment the pressure-feature interactions were assessed to determine the potential for LSE and risk to the conservation objectives. This section looks at the pressures exerted by the fishing activity occurring in the site (within the assessment period) in relation to the sensitivities of the protected features. The potential for an LSE was identified where there was both a medium-high risk of a pressure arising from the fishing activity and if any of the features were considered sensitive to that pressure. These pressure-features interactions were then taken forward to the appropriate assessment stage (Part B) to determine whether the plan or project would have an adverse impact on site integrity.

For each activity assessed in Part A, there were two possible outcomes for each identified pressure-feature interaction:

  • The pressure-feature interactions were not included for Part B:
    • If the feature is not exposed to the pressure, and is not likely to be in the future; or
    • If the effect/impact of the pressure is not likely to be significant.
  • The pressure-feature interactions were included for assessment in Part B:
    • If the feature is exposed to the pressure, or is it likely to be in the future; and
    • If the potential scale or magnitude of any effect is likely to be significant; or
    • If it is not possible to determine whether the magnitude of any effect is likely to be significant.

Part B of the assessment aligns with the requirements for an Appropriate Assessment under the Conservation of Offshore Marine Habitats and Species Regulations 2017 (as amended) and the Conservation (Natural Habitats, & c.) Regulations 1994 and considers the potential impact to site integrity by assessing the impact of fishing gears identified in Part A. This involves determining the potential level of interaction between the feature and the fishing activity, assessing the potential impact on the feature, and subsequently if fishing activities are liable to affect the conservation objectives of the site and thus the integrity of the site.

This involves determining the level of interaction between the feature and the fishing activity, assessing the potential impact on the feature, and subsequently if fishing activities are liable to affect the conservation objectives of the site and thus the integrity of the site.

Consideration of exposure to and the effect of a pressure on a protected feature of the SAC includes the consideration of exposure to and the effect of that pressure on any ecological or geomorphological process on which the conservation of the protected feature is wholly or in part dependant.

The joint JNCC-NatureScot advice package ‘Solan Bank Reef MPA: Relevant Documentation & Conservation Advice 2012’ and JNCC Fisheries Management Options Paper: Solan Bank Reef Special Area of Conservation has been used to inform this assessment. This is the most recent assessment package and options paper available.

Where appropriate, this advice has been supplemented by information on feature sensitivity from the Advice on Operations Package for Stanton Banks SAC and pressures associated with fishing activity from the JNCC Marine Pressures-Activities Database (PAD) v1.5 2022. As this site does not contain a published Advice on Operations Package, on the agreement with JNCC, Stanton Banks SAC Advice and Operations Package has been used as a proxy evidence package.

2.2 Activities taking place within Solan Bank Reef SAC

To screen out fishing activities that were not taking place within the site or likely to take part in the future, VMS data within Solan Bank Reef SAC from 2015 – 2019 were analysed to identify the gear types being used in the site and the aggregated gear method (Table 2). The gear types identified from 2015 – 2019 VMS data align with those included in the JNCC Fisheries Management Options Paper: Solan Bank Reef Special Area of Conservation. The fishing gears screened out at this stage were not taken forward to part B of the assessment.

Solan Bank Reef SAC has two small areas of overlap with the inshore region (0-12 nm) and subsequently inshore fishing activity was also incorporated into the screening stage. Paper logbook data were checked to determine if there were inshore fishing activities occurring within this site.

The logbook data suggest that dredging for scallops takes place within the site, which is supported by the 2015 – 2019 VMS data and the JNCC Fisheries Management Options Paper: Solan Bank Reef Special Area of Conservation. Although the logbook data also indicated that hand diving for scallops may take place in the site, these data were considered to be erroneous and were excluded. Paper logbook data are self-reported positions and can contain errors; given the water depth at one of the reported sites (80 m), hand diving for scallops was considered highly unlikely.

Table 2. Gear types recorded from the site based on VMS data from 2015 – 2019.
Gear type Specific Gear Type Gear code Aggregated gear method
Towed Bottom otter trawl OTB Demersal trawls
Multi-rig trawls OTT
Pair trawl PTB
Bottom trawls (not specified) TB
Scottish fly/seine SSC Demersal seines
Towed (pelagic) Mid-water trawl (single) OTM Pelagic fishing
Dredges (towed) Boat dredges DRB Boat dredges
Static- pots/traps Pots/creels FPO Traps /creels

2.3 Potential pressures exerted by site fishing activities on protected features

According to the JNCC Fisheries Management Options Paper: Solan Bank Reef Special Area of Conservation, the activities considered capable of affecting the reef feature are various types of demersal fishing. Pelagic fishing, in particular single mid-water trawls, whilst occurring in the site was not considered capable of affecting the reef feature as these fishing activities do not contact the bottom. Gear types considered capable of affecting the feature were retained in the assessment, gear types not considered capable of affecting the feature were screened out.

The potential pressures that could be exerted by fishing activities considered capable of affecting the Annex I reef feature (demersal trawls, boat dredges, traps, and demersal seines) were determined using information on activity-pressure relationships in the JNCC Marine Pressures-Activities Database (PAD) v1.5 2022. The potential pressures that could be exerted by demersal trawls, demersal seines, boat dredges, and static traps are summarised in Table 3.

Within the PAD, boat dredges were considered to have a low risk of introduction of microbial pathogens however this pressure applies to native oyster populations, which are not part of the reef feature, and so this pressure was excluded from Table 3. The above water noise and collision above water pressures both had low risk profiles for all four fishing activity types, however these pressures were not considered capable of affecting the reef feature and were excluded.

Table 3. Potential pressures exerted by demersal trawls, demersal seines, boat dredges, and static traps taken from the JNCC Marine Pressures-Activities Database (PAD) v1.5 2022. The PAD risk profiling of pressures score represents the general risk the pressures pose to the environment under normal conditions. Pressures are categorised as posing a medium/high risk (dark blue) or low risk (light blue). Pressures that are not exerted by the fishing activity are classed as not relevant (white).
PAD Pressure Fishing activity
Demersal trawls Demersal seines Boat Dredges Traps/Creels
Transition elements and organo-metal (e.g. TBT) contamination. Includes those priority substances listed in Annex II of Directive 2008/105/EC Low
Hydrocarbon & PAH contamination. Includes those priority substances listed in Annex II of Directive 2008/105/EC. Low
Synthetic compound contamination (incl. pesticides, antifoulants, pharmaceuticals). Includes those priority substances listed in Annex II of Directive 2008/105/EC. Low
Deoxygenation Low
Nutrient enrichment Low Low Low Not relevant
Organic enrichment Low
Physical change (to another seabed type) Low Low Low Not relevant
Physical change (to another sediment type) Low Low Low Not relevant
Abrasion/disturbance of the substrate on the surface of the seabed Medium-high
Penetration and/or disturbance of the substrate below the surface of the seabed, including abrasion Medium-high Medium-high Medium-high Low
Changes in suspended solids (water clarity) Medium-high Medium-high Medium-high Not relevant
Smothering and siltation rate changes (light) Medium-high Medium-high Medium-high Not relevant
Litter Low
Underwater noise changes Low
Introduction of light Low
Barrier to species movement Not relevant Not relevant Not relevant Low
Collision BELOW water with static or moving objects not naturally found in the marine environment (e.g. boats, machinery and structures) Low
Visual disturbance Low Low Medium-high Low
Introduction or spread of invasive non-indigenous species (INIS) Low
Removal of target species Medium-high
Removal of non-target species Medium-high

2.4 Significance of effects/impacts to protected features

To determine whether each pressure is likely to have a significant effect on the site’s features, the sensitivity assessments and risk profiling of pressures from the NatureScot and JNCC Conservation Objectives and Advice on Operations conservation advice package and the JNCC Marine Pressures-Activities Database (PAD) v1.5 2022 were used. A detailed JNCC Advice on Operations Spreadsheet is not available for this site.

A detailed JNCC Advice on Operations Spreadsheet is not available for Solan Bank SAC, therefore, in consultation with JNCC, the Advice on Operations Package for Stanton Banks was used as a proxy for this site due to the similarity of the features present.

Table 4 identifies the pressures from particular gears that could have a likely significant effect on each feature. Where a pressure from a particular gear is identified as not having a likely significant effect on a feature, justification is provided. To ensure the effects of fishing activities in-combination with other activities (including other fishing activities) are fully assessed, the pressures from fishing activities which were not identified as having a likely significant effect but which do interact with the feature are considered in the in-combination aspect of the assessment (Part C).

Table 4. Extract of the Advice on Operations for Stanton Banks SAC, showing the pressures from specific activities and the potential sensitivity of the protected features (Annex I Reef) of the Solan Bank SAC. Pressures are categorised as Not Relevant (white), Not Assessed (white), High sensitivity (dark blue), Sensitive (dark blue), Not Sensitive (light blue), or Insufficient Evidence (white).
Potential pressure Protected feature sensitivity: Annex I Reef
Demersal trawls Demersal seines Dredges Traps/Creels
Transition elements and organo-metal (e.g. TBT) contamination. Includes those priority substances listed in Annex II of Directive 2008/105/EC Insufficient evidence
Hydrocarbon & PAH contamination. Includes those priority substances listed in Annex II of Directive 2008/105/EC. Insufficient evidence
Synthetic compound contamination (incl. pesticides, antifoulants, pharmaceuticals). Includes those priority substances listed in Annex II of Directive 2008/105/EC. Insufficient evidence
Deoxygenation Not sensitive
Nutrient enrichment Insufficient evidence Insufficient evidence Insufficient evidence Not relevant
Organic enrichment Sensitive
Physical change (to another seabed type) Sensitive Sensitive Sensitive Not relevant
Abrasion/disturbance of the substrate on the surface of the seabed Sensitive
Penetration and/or disturbance of the substrate below the surface of the seabed, including abrasion Sensitive
Changes in suspended solids (water clarity) Sensitive Sensitive Sensitive Not relevant
Smothering and siltation rate changes (light) Sensitive Sensitive Sensitive Not assessed
Litter Insufficient evidence
Underwater noise changes Not relevant
Introduction of light Not relevant
Barrier to species movement Not relevant
Collision BELOW water with static or moving objects not naturally found in the marine environment (e.g. boats, machinery and structures) Not relevant
Visual disturbance Not relevant
Introduction or spread of invasive non-indigenous species (INIS) Sensitive
Removal of target species Not relevant Not relevant Not assessed Not assessed
Removal of non-target species Sensitive

Considering both the information on the pressure activity association (Table 3) and the sensitivity of the reef feature (Table 4), pressures with the potential to cause likely significant effects are summarised in Table 5.

Pressures that are not relevant to demersal trawls, demersal seines, boat dredges, and traps (pressures that are not exerted by that fishing activity: ‘not relevant to the activity’ in Table 5) do not need to be considered further in the assessment. According to the PAD methods document (Robson et al., 2018), pressures with low risk profiles (i.e. ‘low’ risk profile for the activity: Tables 3 & 5) generally do not occur at a level of concern and should not require consideration as part of an assessment, unless there are evidence-based case or site-specific factors that increase the risk, or there is uncertainty on the level of pressure on a receptor. Pressures with ‘medium-high’ risk profiles are commonly induced by the activity at a level that needs to be considered further as part of an assessment.

Pressures that were not relevant to the feature, do not need to be considered further in the assessment (Table 5). Pressures where the feature was ‘not sensitive’ (Table 4) can also be screened out. Any pressures that do not have a sensitivity assessment (either ‘not assessed’ or ‘no evidence’) should be considered as this does not mean that the feature is not sensitive, only that there is insufficient evidence to make an assessment.

Pressures with a medium-high risk profile in PAD and to which the Advice on Operations identified the feature as being sensitive would meet the definition of a likely significant effect (“any effect that may reasonably be predicted as a consequence of a plan or project that would negatively and significantly affect the conservation objectives established for the habitats and species significantly present on the site”: EU Commission, 2021).

Of the pressures considered, there are six which have medium-high risk profiles for at least one of the fishing gear types and to which the feature is sensitive (Table 5). These six pressures are subsequently considered to have the potential to have likely significant effects (LSE) on the Annex I reef feature.

Of the pressures considered, there are six which have medium-high risk profiles for at least one of the fishing gear types and to which the feature is sensitive (Table 5): abrasion/disturbance of the substrate on the surface of the seabed; penetration and/or disturbance of the substrate below the surface of the seabed, including abrasion; changes in suspended solids (water clarity); smothering and siltation rate changes (light); removal of target species and the removal of non-target species. Five of these pressures, with the exception of removal of target species, have the potential to be exerted by demersal trawls, seines and dredges. The three pressures attributed to traps/creels which are abrasion/disturbance of the substrate on the surface of the seabed, removal of non-target species and removal of target species. These six pressures are subsequently considered to have the potential to have likely significant effects (LSE) on the Annex I reef feature.

Table 5. Summary of pressures that have the potential to cause likely significant effects, based on pressure-activity associations (Table 3) and the sensitivity of the reef feature (Table 4). Pressures with the potential to cause likely significant effects (LSE) are in dark blue.
Potential pressure Fishing Activity
Demersal trawls and Demersal seines Boat Dredges Traps/Creels
Transition elements and organo-metal (e.g. TBT) contamination. Includes those priority substances listed in Annex II of Directive 2008/105/EC No – insufficient evidence to assess sensitivity, but low risk profile for activity.
Hydrocarbon & PAH contamination. Includes those priority substances listed in Annex II of Directive 2008/105/EC. No – insufficient evidence to assess sensitivity, but low risk profile for activity.
Synthetic compound contamination (incl. pesticides, antifoulants, pharmaceuticals). Includes those priority substances listed in Annex II of Directive 2008/105/EC. No – insufficient evidence to assess sensitivity, but low risk profile for activity.
Deoxygenation No – low risk profile for the activity and the feature is not sensitive.
Nutrient enrichment No – insufficient evidence, but low risk profile for activity. No – not relevant for the activity. No – not relevant for the activity.
Organic enrichment No – although the feature is sensitive, the risk profile is low.
Physical change (to another seabed type) No – although the feature is sensitive to this pressure, the pressure has a low risk profile for the activity. No – not relevant for the activity. No – not relevant for the activity.
Abrasion/disturbance of the substrate on the surface of the seabed Yes – the pressure has a medium-high risk profile AND the feature is sensitivity to this pressure.
Penetration and/or disturbance of the substrate below the surface of the seabed, including abrasion Yes –the feature is sensitive AND the pressure has a medium-high risk profile. Yes –the feature is sensitive AND the pressure has a medium-high risk profile. No – although the feature is sensitive, the pressure has a low risk profile
Changes in suspended solids (water clarity) Yes - the feature is sensitive to the pressure AND has a medium-high risk profile. Yes –the feature is sensitive AND the pressure has a medium-high risk profile. No – not relevant for the activity.
Smothering and siltation rate changes (light) Yes – the feature is sensitive AND the pressure has a medium-high risk profile. Yes –the feature is sensitive AND the pressure has a medium-high risk profile. No – not relevant for the activity
Litter No – insufficient evidence to assess sensitivity, but low risk profile for activity.
Underwater noise changes No – low risk profile for activity AND the pressure is not relevant to this feature.
Introduction of light No – low risk profile for activity AND the pressure is not relevant to this feature.
Barrier to species movement No – the pressure is not relevant to the feature.
Collision BELOW water with static or moving objects not naturally found in the marine environment (e.g. boats, machinery and structures) No – the pressure is not relevant to the feature.
Visual disturbance No – the pressure is not relevant to the feature.
Introduction or spread of invasive non-indigenous species (INIS) No – although the feature is sensitive, the pressure has a low risk profile.
Removal of target species No – although the pressure has a medium-high risk profile, and high sensitivity, the pressure is not relevant to the feature. The benthic community associated with the feature is not being targeted by the activity. Yes – the pressure has a medium-high risk profile and has not been assessed for dredges Yes – the pressure has a medium-high risk profile and has not been assessed for traps
Removal of non-target species Yes – the pressure has a medium-high risk profile AND the feature is sensitive to this pressure.

2.5 Part A Conclusion

Considering the information on pressures and sensitivity above, and guidance within the EU Commission guidance on the Assessment of plans and projects significantly affecting Natura 2000 sites; a methodological guidance on the provisions of Article 6 (3) and (4) of the Habitats Directive 92/43/EEC in relation to European sites, mobile demersal fishing (including trawls, seines, and boat dredges) and static demersal fishing (traps) have the potential to have a likely significant effect (LSE) on the reef feature within Solan Bank Reef SAC, through abrasion/disturbance of the substrate on the surface of the seabed; penetration and/or disturbance of the substrate below the surface of the seabed, including abrasion; changes in suspended solids (water clarity); smothering and siltation rate changes (light); removal of target species and the removal of non-target species. These six pressures are taken through to Part B of the assessment.

Contact

Email: marine_biodiversity@gov.scot

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