addressing data deficient fisheries wednesday 3 february wignacourt seafood summit… ·...
TRANSCRIPT
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Addressing Data Deficient Fisheries
Wednesday 3 February 09.00 – 10.15
Wignacourt Seafood Summit, Malta
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Options and challenges for assessment and management of data-deficient fisheries
Simon Jennings Centre for Environment, Fisheries and Aquaculture Science
United Kingdom
SeaWeb Seafood Summit “Addressing Data-Deficient Fisheries” 3 Feb 2016
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• What is the current state of the stock?
• How does this relate to where we want to be?
• How do we get there and what can be caught?
Questions for managers, industry and society
SeaWeb Seafood Summit “Addressing Data-Deficient Fisheries” 3 Feb 2016
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• Overfishing
• Underfishing (excessive precaution)
• No access to certification
• No evidence base for society
Risks when data-deficient
SeaWeb Seafood Summit “Addressing Data-Deficient Fisheries” 3 Feb 2016
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Numbers of assessed species as proportion of
species recorded in catches
Landings of assessed species as a proportion of
total landings
16%
.... and Ricard et al (2012)
35%
Sources: Hilborn & Ovando (2014)
Knowledge of status of global stocks
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Knowledge of status of European stocks
0 20 40 60 80Percentage
Landings weight
Stock number
Landings value Not assessed
Source: Le Quesne et al (2013)
Assessed
Not assessed
Not assessed Assessed
Assessed
(For which Total Allowable Catches are set)
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Source: estimates from analysis of Le Quesne et al (2013)
Knowledge of status of European stocks
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Source: estimates from analysis of Le Quesne et al (2013)
Knowledge of status of European stocks
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data
Source: Based on ICES (2012)
ICES approach to fisheries advice Category 6: Stocks with negligible landings data and taken in minor amounts as bycatch
Category 5: Stocks with landings data only
Category 4: Stocks with reliable catch data allowing MSY to be approximated
Category 3: Status from fishery-dependent and fishery-independent indices which reliably show stock properties
Category 2: Analytical assessment and forecast available but to be treated qualitatively
Category 1: Quantitative assessments with stock status and forecasts of status
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Y
Do survey- based
assessments indicate stock
trends ?
Are catch- data the only
data type available ?
Y
Category 1 “Data-rich”
N
Cats 5 and 6 “Data-poor”
Category 3 “Survey-based”
N
Category 2 “Trends only” Category 4
“Catch only”
Y
Assessment and forecast are used for ICES MSY advice
Is a quantitative assessment and forecast available ?
Are commercial/ non-commercial data or proxies available ?
N
Source: Based on ICES (2012)
ICES approach to advice on data-limited stocks
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Category 1 “Data-rich”
Cats 5 and 6 “Data-poor”
Category 3 “Survey-based”
Category 2 “Trends only” Category 4
“Catch only”
Source: Based on ICES (2012)
ICES approach to advice on data-limited stocks
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Tier 4
Tier 3
Tier 2
Tier 1
CPUE status and trends
Unc
erta
intie
s
Cost
s
Full age-size & meta- structured stock assessments (most robust)
Source: David Smith, Dichmont et al 2015
Other tiered approaches e.g. Australia
- Explicit reduction in TAC as Tier level increases (more precautionary) - Stocks can move between Tiers
Full size-structured assessment
Catch curve analyses (by age and length)
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Risky
Costly
Tradeoffs between costs and catch
Source: After Sainsbury (2005)
Low High
High
Lo
w
Catch
Cos
t of a
sses
smen
t
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Initiatives to develop and test methods • Workshops on the development of quantitative assessment methods based on life-history traits, exploitation characteristics and other key parameters for data-limited stocks (ICES, WKLIFE)
• Assessment for All (a4a) projects: Joint Research Centre, EC
• Many other projects nationally and internationally
See examples in: ICES WKLIFE & related reports, Jardim et al 2014 and recent special issues of Fisheries Research and ICES Journal of Marine Science
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Remaining challenges • To increase focus on testing the performance of methods proposed for the assessment of data deficient fisheries (not a shortage of methods so much as a shortage of rigorous tests)
Much more in: ICES WKLIFE reports, Dichmont et al 2015, Fish. Res. spec issue
• To improve knowledge of the precautionary buffers needed to provide risk equivalence: to allow cost-benefit analysis before deciding on the need for more or less data (e.g. Dichmont et al.)
• To increase emphasis on methods relevant to management systems based on effort control and technical measures (e.g. inshore and for shellfish)
• To further assess when harvest control rules can replace annual assessment and help spread resources (Geromont & Butterworth)
• To understand and take account of effects of average assumptions on the performance of data-poor assessment methods
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Project Inshore
Dr Tom Pickerell, Technical Director @drpickerell
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• The UK Seafood Industry Authority • A Non-Departmental Public Body • Funded by a levy on first sale of Seafood
(domestic & imports; not diadromous) • Report to all 4 UK Fisheries Ministers
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The Issue UK/EU fishery surveys focuses on quota species
Many quota fisheries >6nm
Limited strategic stock assessments within
<6nm
Most vessels <6nm are <10m
<10m vessels make up 75% of fleet but receive
4% quota
Many <10m vessels fish for unassessed stocks
Supply chain pressured to source from
responsible stocks
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The Challenge • Determine a effective & efficient ($$)
method of assessing data-poor stocks • Provide a means for these fisheries to
demonstrate ‘responsibility’: • Promote to supply chain
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Project Inshore
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The Plan
Map Fisheries Pre-Assess Fisheries
Produce Management Plans
Ready to Certify
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Project Governance
Regulator Advisor Manager NDPD Industry NGO Supply Chain
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Project Partners
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Results
Map Fisheries
•450 species/gear combinations
Pre-Assess Fisheries
•50 close to MSC certification
Produce Management Plans
•High value fisheries
Ready to Certify
•Score over 60 across each PI
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http://msc.solidproject.co.uk/msc-project-inshore.aspx
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http://msc.solidproject.co.uk/msc-project-inshore.aspx
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Lobster Brown crab
Lobster Brown crab
Whelk Lobster
Cockle/Mussel Whelk Shrimp Lobster Mussel Whelk
Native oyster Lobster Clams
Whelks Grey Mullet
Lobster Brown crab
Sea Bass Spider Crab
Scallop
Cockle/Mussel Nephrops
Plaice Lobster
Thornback Ray
Lobster Brown crab
Whelks
Management Plans
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Ready to Certify
UoCs estimated to meet SG80 across all MSC principles
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Ready to Certify
UoCs estimated to meet SG80 for MSC Principle 1 & 3, but between SG60-80 for Principle 2
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UoCs estimated to score between SG60-80 for MSC Principle 1 (and in some cases P2 & P3)
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North Sea Cod
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North Sea Cod
“North Sea cod could pass MSC certification once the stock is above the limit reference point
and rebuilding is shown to be fast enough”
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North Sea Cod
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North Sea Cod
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The Challenge • Determine a effective & efficient ($$)
method of assessing data-poor stocks • Provide a means for these fisheries to
demonstrate ‘responsibility’: • Promote to supply chain
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www.seafish.org/rass
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The Challenge • Determine a effective & efficient ($$)
method of assessing data-poor stocks • Provide a means for these fisheries to
demonstrate ‘responsibility’: • Promote to supply chain
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Project UK
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Project UK – partners to date
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Stage I
Project UK
Stage II
Identify • Map UK fisheries • Pre-Assess
selected fisheries • Develop action
plans for each fishery
• Identify priority fisheries to ‘improve’
Improve • Use MSC BMT to
improve priority fisheries from Project Inshore (FIPs)
• Fully assess improved fisheries
• Certification
Improve • Use MSC BMT to
improve priority fisheries from ‘identify’ (FIPs)
• Fully assess improved fisheries
• Certification
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Stage I
Project UK
Stage II
Identify • Map UK fisheries • Pre-Assess
selected fisheries • Develop action
plans for each fishery
• Identify priority fisheries to ‘improve’
Improve • Use MSC BMT to
improve priority fisheries from Project Inshore (FIPs)
• Fully assess improved fisheries
• Certification
Improve • Use MSC BMT to
improve priority fisheries from ‘identify’ (FIPs)
• Fully assess improved fisheries
• Certification
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Project UK – Candidate FIPs • South West brown crab • South West lobster • Scallops • Monkfish • North Sea lemon sole • North Sea plaice
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Take Home Messages • The Project Inshore model works • Transferable • Scaleable and cost-effective • Complementary to traditional FIP approach
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Data deficient fisheries.
The Orkney experience
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Engagement with local fishermen
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Recruitment of committed and enthusiastic scientists
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Overarching plan to bring research work together. The Orkney Fishery Improvement Project
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Orkney Fishery Improvement Project Funded by: Marks & Spencer Orkney Islands Council Local fishing and processing sector The aim is for the fishery to meet MSC standard by end 2016
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Extensive market sampling
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Observer trips
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Additional research projects Raising juvenile lobsters
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Juvenile lobster habitat trials
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Lobster tagging and movement studies
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Crab tagging and movement studies
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Brown crab sexual maturity studies
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Benefits to fishing community? * Fishermen have ownership of research * Fishermen feel empowered to take locally informed management decisions * Greater customer assurance gives greater access to markets
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FISHPATH The path to sustainable fisheries
Dawn Dougherty The Nature Conservancy 3 February 2016
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Unassessed Fisheries
Sustainability Target
AVERAGE STOCK STATUS
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5 YEAR
1979 1989 1999 2000
N = ~ 15,000
N = ~ 500
Costello et al., 2012, Science
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Demand Rising
41% of seafood buyers actively look for fish from a sustainable source.
147% increase in MSC ecolabelled products between 2010 and 2014.
Supply < Demand
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IMPROVING FISHERIES
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• Not easily accessible • Different requirements and outputs • Costs and advantages differ • Social, economic, governance context • Practitioner bias
Many methods available for managing and assessing data- and/or capacity-limited fisheries
Challenge: Navigating the methods
disconnect between the development of assessment approaches and decision rule options, and their on-the-ground implementation
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FISH PATH Decision-Making Framework
DATA
GOVERNANCE
BIOLOGY
FISHERY DIAGNOSIS & COST DATABASE
FLEET
SOCIO- ECONOMICS
$ COSTS OF
MANAGEMENT
TRADEOFF ANALYSES
Simulation Modeling: Management Strategy Evaluation (MSE)
MANAGEMENT STRATEGY
FISHERY CHARACTERISTICS
ASSESSMENT
DECISION RULES
MONITORING
MANAGEMENT STRATEGY SELECTION PROCESS
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PROFITS
TRADEOFF ANALYSES – PERU CASE STUDY
Area Closure
CONS
ERVA
TION
Combined Approaches
Minimum Size Limit
Area Closure
Season Closure
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Peru Case Study Lorna Drum (Sciaena deliciosa)
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Project • Site visits • Test and refine • Identify strategies • Compare strategies
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Phase I DEMONSTRATE & REFINE