Development of advice towards ecosystem based fisheries management - - PowerPoint PPT Presentation

Towards Ecosystem Based Fisheries Management in the Bal7c Sea 16 - 17 June 2016 Eskild Kirkegaard ACOM Chair

Development of advice towards ecosystem based fisheries management - ICES advice and ecosystem based fisheries management

Common Fisheries Policy - Objec7ves

• The CFP shall ensure that fishing and aquaculture ac5vi5es are environmentally

sustainable in the long-term and are managed in a way that is consistent with the

• bjec5ves of achieving economic, social and employment benefits, and of contribu5ng

to the availability of food supplies.

• The CFP shall apply the precau5onary approach to fisheries management, and shall

aim to ensure that exploita5on of living marine biological resources restores and maintains popula5ons of harvested species above levels which can produce the maximum sustainable yield.

• The CFP shall implement the ecosystem-based approach to fisheries management so

as to ensure that nega5ve impacts of fishing ac5vi5es on the marine ecosystem are minimised, and shall endeavor to ensure that aquaculture and fisheries ac5vi5es avoid the degrada5on of the marine environment.

What is ecosystem based fisheries management?

Common Fisheries Policy - Objec7ves

• environmentally sustainable,
• economic, social and employment benefits,
• precau7onary approach,
• maximum sustainable yield,
• ecosystem-based approach to fisheries management.

What is ecosystem based fisheries management?

Ecosystem-based approach to fisheries management – defini7on in the CFP Means an integrated approach to managing fisheries within ecologically meaningful boundaries which seeks to manage the use of natural resources, taking account of fishing and other human ac5vi5es, while preserving both the biological wealth and the biological processes necessary to safeguard the composi5on, structure and func5oning of the habitats of the ecosystem affected, by taking into account the knowledge and uncertain5es regarding bio5c, abio5c and human components of ecosystems.

What is ecosystem based fisheries management?

Na5onal Marine Fisheries Service Na5onal Oceanic and Atmospheric Administra5on (NOAA) NOAA Fisheries defines EBFM as a systema(c approach to fisheries management in a geographically specified area that contributes to the resilience and sustainability of the ecosystem; recognizes the physical, biological, economic, and social interac(ons among the affected fishery-related components of the ecosystem, including humans; and seeks to op(mize benefits among a diverse set of societal goals.

What is ecosystem based fisheries management?

Balancing human ac5vi5es & environmental stewardship in a mul5ple use context

Ecosystem Based Management

What is ecosystem based fisheries management?

Trade-offs between fisheries, commercial species, and other ecosystem components (e.g.,

• ther species, habitats, and humans) and

processes that affect, or are affected by, fisheries.

What is ecosystem based fisheries management?

Ecosystem Health and Sustainability Volume 2, Issue 4, 26 APR 2016 DOI: 10.1002/ehs2.1213 h]p://onlinelibrary.wiley.com/doi/10.1002/ehs2.1213/full#ehs212 fig-0001

EBFM – ICES Advice

ICES Advice deliverables

• Stock advice – fishing opportuni7es, how much can you take out of

the stock next year, CFP objec7ve.

• Fisheries overviews – how, whom, where and when, mixed

fisheries and ecosystem impacts.

• Ecosystem overviews – human ac7vi7es, pressures and state

ICES Advice deliverables

Stock advice – fishing opportuni7es

How many tonnes can you take out of the stock next year?

8.3.10 Herring (Clupea harengus) in Subdivision 30 (Bothnian Sea)

ICES stock advice ICES advises that when the MSY approach is applied, catches in 2016 should be no more than 96 613 tonnes. Stock development over time The spawning-stock biomass (SSB) increased until the beginning of the 1990s; then the stock decreased, but showed increase from the end of the 1990s and has been above MSY Btrigger since 1986. Fishing mortality has been below F from the very beginning of the time-series, and just above since 2012. Recruitment is variable and increasing over tim

Figure 8.3.10.1 Herring in Subdivision 30. Summary of stock assessment (weights in thousand tonnes). Recruitment and SSB in 20 are predicted. Recruitment, F, and SSB have confidence intervals (95%) in the plot.

Stock and exploitation status

Table 8.3.10.1 Herring in Subdivision 30. State of the stock and fishery, relative to reference points. Fishing pressure Stock size 2012 2013 2014 2013 2014 2015 Maximum Sustainable Yield FMSY Above MSY Btrigger Above trigge Precautionary approach Fpa, Flim Undefined Bpa, Blim Above pote candidate reference p Management Plan FMGT

• Not applicable

SSBMGT

• Not applica

ICES Advice on fishing opportuni5es

Present stock status and dynamics:

Ø

Growth, maturity

Ø

Stock recruitment

Ø

Preda5on mortality

Reference points are based on single stock considera5ons and does not include species interac5on

ICES Advice deliverables

Bal7c mul7species interac7ons

Hydrography

Acartia spp. Pseudocalanus acuspes

higher/lower oxygen content and salinity Path 1 Path 2

mainly inflow event freq.

Climate

positive NE-Atlantic Oscillation Index, change of high and low pressure areas Cod eastern Baltic Sprat Baltic

Path 2

weak inflows, more terrestrial runoff, more nutrients

higher/lower winter temperatures

Path 1

more & stronger inflow, less terrestrial runoff, surface more saline, deep water more oxygen Herring central Baltic

predation

food competition

pre-1990ies post-1990ies

Fishery

less/more recruits more/less recruits predation catch predation predation predation predation

Dorscheier

catch

Mul7species modelling

WKMULTBAL 2012

Trade-offs and priori5es

Fmsy ranges - Sprat

Stock MSY Flower FMSY MSY Fupper with AR MSY Btrigger (thousand t) Sprat 0.19 0.26 0.27 570

Fisheries overviews

How, whom, where and when, mixed fisheries and ecosystem impacts.

Total fishing effort (hours) Q1–Q4 2013. Mobile bo]om contac5ng gears, midwater trawls, and longlines.

MSFD descriptors

Fisheries overviews

Ecosystem overviews

Ecosystem based approach – ICES advice Trade-offs/priori(es between fisheries, commercial species, and other ecosystem components (e.g.,

• ther species, habitats, and humans) and processes

that affect, or are affected by, fisheries. Economic and social interac(ons ICES advice

TAC and quotas Technical measures including closed areas/seasons Fisheries management

Thank you