A study on the ecosystem-based resource management system of self-regulatory community fisheries

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J. Kor. Soc. Fish. Tech., 44(4), 345 352, 2008 DOI:10.3796/KSFT.2008.44.4.345

A study on the ecosystem-based resource management system of self-regulatory community fisheries

Hee Won P

* and Chang Ik Z

Division of marine production system management, Pukyng National University, Busan 608-737, Korea

A self-regulatory community fisheries management program in Korea is designed to enhance fisheries resources, to protect fishing grounds of self-regulatory communities, and to manage their fisheries resources by their own regulations and knowledge. This study explored an applicable ecosystem-based management plan based on the scientific investigation and analysis. This study suggested objectives, indicators and reference points of the ecosystem-based resource management system which are applicable to self- regulatory community fisheries. The objectives of the management system are to maintain sustainable fisheries production, to maintain optimum fishing intensity, to reduce by-catch, to conserve spawning ground and habitat, to maintain optimum habitat environment, to increase/maintain abundance of prey species, to increase/maintain stock biomass, and to conduct stock enhancement on the basis of scientific assessment. The improved methods for the assessment and management are introduced by demonstrating a self-regulatory fishery which targets on hen clam in Dong-li fishing village in Busan.

Key words : Ecosystem-based management, Self-regulatory community fisheries, Objectives, Indicator, Reference point

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Fig. 1. Location of the Dong-li self-regulatory community in Busan.

128 54 E Shinholi

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Criterion Scenario Stock enhancement

Criterion 1 Not needed

Criterion 2 Scenario 1 Enhanced at(

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Fig. 2. Current self-regulatory fisheries management system in Korea.

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Table 2. Stock enhancement of Mactra chinensis for Dong-li self-regulatory community by scenarios

Criterion Scenarios

Criterion 2 Stock enhancement by F40% Increase 311(M/T) Stock enhancement by F30% Increase 236(M/T)

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Table 3. Ecosystem Objectives, Indicators and Reference points for self-regulatory management system

Objectives Indicators Reference points

1. Maintain sustainable fisheries production 2. Maintain optimum fishing intensity 3. Reduce by-catch

4. Conservation of spawning ground & habitat

5. Maintain optimum habitat environment

6. Increase/maintain abundance of prey species 7. Increase/maintain stock biomass

8. Optimum stock enhancement

TAC Fishing mortality Diversity in species abundance

Areas of disturbed spawning ground & habitat

Abundance of predator or pirate species

% of prey species in diet Stock biomass Optimum amount of stock release

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% of each spawning ground and habitat that is undisturbed Annual yield for predator or

pirate species Minimum % in diet

BMSY, Bx %

Carrying capacity

Table 4. Applied parameter ecosystem objectives, indicators and reference points for self-regulatory management system

Objectives Reference points Management scheme in Dong-li

1. Maintain sustainable fisheries production 2. Maintain optimum fishing intensity

3. Maintain optimum habitat environment 4. Increase/maintain stock biomass

5. Optimum stock enhancement

ABC F0.1, Fx%

Annual yield for pirate species BMSY, Bx%

Carrying capacity

260 369 M/T

F0.1 0.250/yr

F40% 0.418/yr

500 kg

BMSY 491 M/T

Bx% 409 M/T

1,174 M/T

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