Planning Scotland's Seas: 2013 - The Scottish Marine Protected Area Project – Developing the Evidence Base for Impact Assessments and the Sustainability Appraisal Final Report - Appendix E - Marine Site Reports
This is Appendix E for the pMPA Impact and Sustainability Report containing the detailed site by site reports. Published separately due to size.
Loch Sween ( LSW)
Site Area (km 2): 40
Site Summary
Table 1. Summary of Proposed Protected Features, Data Confidence and Conservation Objectives | [ LSW] | ||||
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Proposed protected features | |||||
Biodiversity Features Burrowed mud, maerl beds, native oysters, sublittoral mud and mixed sediment communities. Geodiversity Features None. Site Description The Loch Sween MPA proposal encompasses Loch Sween and the tide-swept waters around the mouth of the Sound of Jura that surround the Island of Danna and the McCormaig Isles. Loch Sween is a typical fjordic loch orientated from south-west to north-east. |
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Summary of confidence in presence, extent and condition of proposed protected features and conservation objectives | |||||
Proposed Protected Feature | Estimated Area of Feature (by scenario) (km 2) | Confidence in Feature Presence |
Confidence in Feature Extent |
Confidence in Feature Condition |
Conservation Objective and Risk |
Biodiversity Features | |||||
Burrowed mud | *Lower: 16.62 Intermediate: 16.62 Upper: 21.80 |
Yes ( SEPA surveys, 2009 & 2010) | Yes | Not known | Conserve |
Maerl beds | Lower: 0.37 Intermediate: 0.37 Upper: 1.49 |
Yes ( SNH video survey, 2008) | Yes | Not known | Conserve |
Native oysters | Lower: 1.92 Intermediate: 1.92 Upper: 1.92 |
Yes ( SNH funded PhD surveys, 2004 & 2005) | Yes | Not known | Conserve |
Sublittoral mud and mixed sediment communities | Included with Burrowed mud feature extent | Yes (Nature Conservancy Council surveys, 1980s) | Yes | Not known | Conserve |
Geodiversity Features | |||||
N/A | |||||
Key: * Estimated area based on best available data References: Area of Feature: GeMs Confidence in feature presence and extent: SNH (2012h) |
Summary of Costs and Benefits
Table 2a. Site-Specific Economic Costs on Human Activities arising from the Designation and Management of the Site as an MPA (present value of total costs over 2014 to 2033 inclusive) | [ LSW] | ||
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Human Activity | Cost Impact on Activity | ||
Lower Estimate (£Million) | Intermediate Estimate (£Million) | Upper Estimate (£Million) | |
Quantified Economic Costs (Discounted) | |||
Commercial Fisheries* | 0.018 | 0.051 | 0.126 |
Military | See national costs | See national costs | See national costs |
Ports and Harbours | 0.000 | 0.000 | 0.005 |
Total Quantified Economic Costs | 0.018 | 0.051 | 0.131 |
Non-Quantified Economic Costs | |||
Commercial Fisheries |
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Military |
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Ports and Harbours |
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Recreational Boating |
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Note: For detailed information on economic cost impacts on activities, see Table 4. * These estimates (present value of total change in GVA) assume zero displacement of fishing activity and hence are likely to overestimate the costs. |
Table 2b. Site-Specific Public Sector Costs arising from the Designation and Management of the Site as an MPA (over 2014 to 2033 inclusive) | [ LSW] | ||
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Description | Public Sector Costs | ||
Lower Estimate (£Million) | Intermediate Estimate (£Million) | Upper Estimate (£Million) | |
Quantified Public Sector Costs (Discounted) | |||
Preparation of Marine Management Schemes | None | None | None |
Preparation of Statutory Instruments | 0.004 | 0.004 | 0.004 |
Development of voluntary measures | National assessment | National assessment | National assessment |
Site monitoring | National assessment | National assessment | National assessment |
Compliance and enforcement | National assessment | National assessment | National assessment |
Promotion of public understanding | National assessment | National assessment | National assessment |
Regulatory and advisory costs associated with licensing decisions | None | None | <0.001 |
Total Quantified Public Sector Costs | 0.004 | 0.004 | 0.004 |
Non-Quantified Public Sector Costs | |||
None |
Table 2c. Summary of Social Impacts and Distribution of Quantified Impacts arising from the Designation and Management of the Site as an MPA (over 2014 to 2033 inclusive) | [ LSW] | |||||||||
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Key Areas of Social Impact | Description | Scale of Expected Impact across Scenarios, Average (mean no. of jobs affected) | Distributional Analysis | |||||||
Location | Fishing Groups Predominantly Affected | Social Groups Affected | ||||||||
Region | Port | Rural/ Urban/ Island | Gear Types Most Affected | Vessels most affected | Crofters | Ethnic minorities | With disability or long term sick | |||
Employment with consequent impacts on: Health, Crime, Environment, and Culture and Heritage | Commercial fisheries - Loss of jobs (direct and indirect) | Lower: 0 jobs Intermediate: 0 jobs Upper: 0 jobs |
West West Isle of Man |
Oban Campbeltown Douglas |
Impacts concentrated in urban and rural coastal areas | Nephrops trawls | Lower: N/A Upper: <15m | No Impact. | No Impact | No employment data but unlikely to be employed in fisheries. |
Note: For detailed information on socio-economic impacts by sector, see Table 7a. For more detailed information on distributional impacts of quantified costs by sector see Tables 7b and 7c. |
Table 2d. Site-Specific Benefits arising from the Designation and Management of the Site as an MPA (over 2014 to 2033 inclusive) | [ LSW] | |
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Benefit | Description | |
Ecosystem Services Benefits (Moderate and High Benefits) | Relevance | Scale of Benefits |
Non-use value of natural environment | Moderate - High. Variety of protected features and contribution of the site to MPA network has non-use values. | Low - Moderate |
Recreation | Moderate - High. Including 1 active dive site, angling and recreational boating routes. | Low - Moderate |
Research and Education | Moderate. Site contains accessible examples of unusual marine features. | Low - Moderate |
Other Benefits | ||
Tourism | Higher biodiversity due to designation, and presence of designations, may attract more tourism activity to local economy. | |
Contribution to ecologically coherent network | See report Section 7.5. | |
Note: For detailed information on ecosystem services benefits, see Tables 9 and 10. For detailed information on other benefits, see Table 5 (activities that would benefit) and Table 8 (contribution to ecologically-coherent network). |
Summary of Overlaps and Interactions between Proposed Designated Features and Human Activities
Table 3. Overlaps and Potential Interactions between Features and Activities under different Scenarios, indicating need for Assessment of Cost Impacts on Human Activities from Designation of the Site as an MPA | [ LSW] | |||||||||||||||||
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Aggregates | Aquaculture (Finfish) | Aquaculture (Shellfish) | Aviation | Carbon Capture & Storage | Coastal Protection | Commercial Fisheries | Energy Generation | Military Activities | Oil & Gas | Ports & Harbours | Power Interconnectors | Recreational Boating | Shipping | Telecom Cables | Tourism | Water Sports | ||
Biodiversity Features | ||||||||||||||||||
Burrowed mud | - | - | - | - | - | - | L/ I/U | - | L/I/U | - | L/ I/ U | L/I/U | L/I/U | - | - | L/I/U | L/I/U | |
Maerl beds | - | - | - | - | - | - | L/I/U | - | L/I/U | - | U | U | L/I/U | - | - | L/I/U | L/I/U | |
Native oysters | - | - | - | - | - | - | L/I/U | - | L/I/U | - | - | L/I/U | L/I/U | - | - | L/I/U | L/I/U | |
Geodiversity Features | ||||||||||||||||||
N/A | ||||||||||||||||||
Note: L = Lower Scenario; I = Intermediate Scenario; U = Upper Scenario. Normal font indicates that there is an overlap between the activity and proposed designated feature under that scenario, bold indicates that the overlap results in a potential interaction between the activity and proposed designated feature that has resulted in cost impacts under that scenario. For detail of management measures assessed under each scenario for each activity, and results of the cost estimates, see Table 4. |
Human Activity Summaries
Human activities that would be impacted by designation of the site as an MPA
Table 4b. Military | [ LSW] | ||
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Three military practice areas (Jura Sound (X5623) and two submarine exercise areas) overlap with the LSW proposed MPA. The military practice area Jura Sound (X5623) overlaps with burrowed mud (all scenarios), maerl beds (all scenarios) and native oyster (all scenarios). The two submarine exercise areas overlap with the features of the LSW proposed MPA to varying degrees under the different extent scenarios. The features and associated habitats which overlap with military activities have not been described as vulnerable to MoD activities in this proposed MPA. It is assumed that management relating to MoD activity will be coordinated through the MoD's Maritime Environmental Sustainability Appraisal Tool ( MESAT) which the MoD uses to assist in meeting its environmental obligations. This process will include operational guidance to reduce significant impacts of military activities on MPAs. It is assumed that the MoD will incur additional costs in adjusting MESAT and other MoD environmental assessment tools in order to consider whether its activities will impact on the conservation objectives of MPAs and also incur additional costs in adjusting electronic charts to consider MPAs. However, these costs will be incurred at national level and hence no site-specific cost assessments have been made. |
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Economic Costs on the Activity of Designation of the Site as an MPA | |||
Lower Estimate | Intermediate Estimate | Upper Estimate | |
Assumptions for cost impacts |
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Description of one-off costs | |||
Description of recurring costs | |||
Description of non-quantified costs | |||
Quantified Costs on the Activity of Designation of the Site as an MPA (£Million) | |||
Total costs (2014-2033) | See national costs | See national costs | See national costs |
Average annual costs | See national costs | See national costs | See national costs |
Present value of total costs (2014-2033) | See national costs | See national costs | See national costs |
Total costs = Sum of one-off costs and recurring costs for the site summed over the 20 year period. Average annual costs = Total costs divided by the total number of years under analysis ( i.e. 20). Present value of total costs = Total costs discounted to their current value, using a discount rate of 3.5%. |
Table 4c. Ports and Harbours | LSW | ||
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There is one port/harbour (Tayvallich) within the LSW proposed MPA boundary. Tayvallich overlaps with burrowed mud and maerl beds under the upper scenario only. Therefore, management costs may be incurred under the assumption that small ports/harbours will undergo one new development within the relevant time frame (2014-2033), assumed for the year 2024. There are three anchorages/mooring areas within the LSW proposed MPA boundary, all of which overlap burrowed mud under all scenarios. Costs may be expected to relocate anchorages/mooring areas to less sensitive areas, although any associated costs are non-quantifiable. |
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Economic Costs on the Activity of Designation of the Site as an MPA | |||
Lower Estimate | Intermediate Estimate | Upper Estimate | |
Assumptions for cost impacts |
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Description of one-off costs |
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Description of recurring costs |
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Description of non-quantified costs |
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Quantified Costs on the Activity of Designation of the Site as an MPA (£Million) | |||
Total costs (2014-2033) | 0.000 | 0.000 | 0.007 |
Average annual costs | 0.000 | 0.000 | 0.000 |
Present value of total costs (2014-2033) | 0.000 | 0.000 | 0.005 |
Total costs = Sum of one-off costs and recurring costs for the site summed over the 20 year period. Average annual costs = Total costs divided by the total number of years under analysis ( i.e. 20). Present value of total costs = Total costs discounted to their current value, using a discount rate of 3.5%. |
Table 4d. Recreational Boating | [ LSW] | ||
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One medium traffic cruising route for recreational boating intersects the LSW proposed MPA boundary, although vessels transiting cruising routes are not expected to require any additional management measures. Under the upper scenario, eight recreational boating anchorages overlap with proposed protected features. Five of the anchorages (and associated 100m buffer zones) overlap with all feature extents for burrowed mud, and three with upper feature extents for burrowed mud. Three of the anchorages also overlap with feature extents for maerl beds. There are also 26 Crown Estate mooring points within the proposed MPA boundary and five mooring areas. The data does not indicate any individual mooring points within any of the five mooring areas, although it is expected that this is an underestimate and additional moorings will be present that are not represented by the data. The Crown Estate's moorings overlap with burrowed mud, maerl beds and native oyster. Under the intermediate and lower scenarios, SNH have identified seven recreational boating anchorages that overlap with proposed protected features. Four anchorages overlap with sublittoral mud and mixed sediment communities; one within the 100m buffer zone and three within the 200m buffer zones. Another anchorage overlaps with sublittoral mud and mixed sediment communities within 200m and burrowed mud within 100m and 200m buffer zones. One further anchorage overlaps with burrowed mud in the 100m buffer zone and one more with a maerl bed point record on the boundary of 100m zone. A further two moorings owned by The Crown Estate overlaps with point records of sublittoral mud and mixed sediment communities. |
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Economic Costs on the Activity of Designation of the Site as an MPA | |||
Lower Estimate | Intermediate Estimate | Upper Estimate | |
Assumptions for cost impacts |
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Description of one-off costs |
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Description of recurring costs |
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Description of non-quantified costs |
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Human activities that would benefit from designation of the site as an MPA
Human activities that are present but which would be unaffected by designation of the site as an MPA
Table 6. Human Activities that are Present but which would be Unaffected by Designation of the Site as an MPA [ LSW] | |
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Activity | Description |
Power Interconnectors | One interconnector is within 1km of the LSW proposed MPA. The interconnector is within 1km of burrowed mud (all scenarios), native oyster (all scenarios) and maerl beds (upper scenario only). No cost impacts are foreseen, as it is assumed that there will be no review of the existing consents. |
Social and Distributional Analysis of Impacts from Designation of the Site as an MPA
Potential Contribution of the Site to an Ecologically-Coherent Network
Table 8. Overview of Features Proposed for Designation and how these contribute to an Ecologically Coherent Network of MPAs | [ LSW] | ||||
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Feature Name | Representation | Replication | Linkages | Geographic Range and Variation |
Resilience |
Burrowed mud | Provides representation of burrowing megafauna and mud volcano worm in OSPAR Region III. | Represents one of two areas of burrowing megafauna and mud volcano worm in OSPAR Region III. | Not currently understood for burrowed mud. | Burrowed mud occurs within a range of environments. All records of this feature of burrowed mud are from OSPAR Region III. The recommended MPA areas would provide representation for the geographic range of the firework anemone type of burrowed mud. | |
Maerl beds, | Provides representation of maerl beds in OSPAR Region III. | Represents one of three areas of maerl bed within OSPAR Region III and one of five in the Scottish seas. | Maerl beds are listed by OSPAR as threatened and/or declining. The MPA may increase resilience. | ||
Native oysters | Provides representation of native oysters in OSPAR Region III. | Represents one of two areas of native oysters within OSPAR Region III. | Native oysters are listed as threatened and/or declining by OSPAR. The MPA may increase resilience. | ||
Sublittoral mud and mixed sediment communities | No information available | ||||
JNCC (pers. comm.); SNH and JNCC. (2012). Assessment of the potential adequacy of the Scottish MPA network for MPA search features: summary of the application of the stage 5 selection guidelines. Available online from: http://www.scotland.gov.uk/Topics/marine/marine-environment/mpanetwork/engagement/270612. |
Anticipated Benefits to Ecosystem Services
Table 9. Summary of Ecosystem Services Benefits arising from Designation of the Site as an MPA [7] | [ LSW] | |||||||
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Services | Relevance to Site |
Baseline Level | Estimated Impacts of Designation | Value Weighting | Scale of Benefits | Confidence | ||
Lower | Intermediate | Upper | ||||||
Fish for human consumption | High. Support food web and contain nursery habitats. | Stocks not at MSY, some vulnerable habitats | Low | Low, Protection of shellfish beds can contribute to maintenance and recovery of stocks - benefits may be higher under stronger protection measures but ecosystem response is uncertain. | High: Commercially valuable species supported. | Low | Moderate, uncertainty mainly in response of habitats to management measures. | |
Fish for non-human consumption | Stocks reduced from potential maximum | |||||||
Gas and climate regulation | Low | Uncertain | Nil | Minimal | Moderate, social cost of carbon | Nil - Minimal | Low - Moderate | |
Natural hazard protection | Minimal | Low | Nil | Minimal | Low | Nil - Minimal | High | |
Regulation of pollution | Moderate, benthic communities regulate pollution | Low, major water quality issues to be dealt with through WFD | Nil | Minimal | Low, water quality in this area not affecting human welfare | Minimal | High | |
Non-use value of natural environment | Moderate - High, variety of protected features, and contribution of the site to MPA network, have non-use value. | Non-use value of the site may decline | Low | Moderate - protection of features of site from decline, and/or allowing some recovery | Moderate - range of features means strong contribution to halting decline of marine biodiversity. | Low - Moderate | Low - Moderate, extent of features, responses to management measures, and value to society all uncertain | |
Recreation | Moderate - High, including 1 active dive site, angling and recreational boating routes | Moderate - High, including tourism activities. Angling may be reduced by damage to features | Low | Low - Moderate, Angling benefits and biodiversity encountered by divers and recreational boaters are protected from possible decline, and could recover under upper scenario. Designation could enhance tourism activity. | Moderate, extensive activities, but substitutes are available. | Low - Moderate, enhancement of activities through improved angling and visitor experiences. | Nil - Moderate, extent of change from management measures uncertain | |
Research and Education | Moderate, site contains some accessible examples of unusual marine features. | Moderate, biological features used for research, but there are substitutes | Low | Low, some aspects of research value are not at risk, some aspects protected from possible decline, and could increase. | Moderate due to existing activity at this site | Low - Moderate | Low - Moderate, extent to which research uses site in future uncertain | |
Total value of changes in ecosystem services | Low for lower scenario, Moderate for upper scenarios | Low - Moderate | Low |
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