Summary: Marine Resource Management
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Read the summary and the most important questions on Marine Resource Management
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1 Introduction and state of the world
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What is the goal of the ecosystem approach (EAS)?
To maintain ecosystem structure and functioning under exploitation of specific parts of the ecosystem -
What are the subsystems of SES?
- Resource system = ecological characteristics of ecosystem
- Resource units = Characteristics of resource
- Management or governance system
- Users of resource and other stakeholders -
What is an subsistence element?
Fish is for local household consumption -
What is the goal of world fisheries?
Reaching MSY -
What is unsustainable fishing?
Abundance is lower than the level that can produce the MSY = overfished -
Which types of levels of fishing are there?
- Underexploited: Up to 10% of maximum catch = underfished
- Moderately exploited: 10-50% = underfished
- Fully exploited: Exploited at MSY = fully fished
- Overexploited: 50-10% of maximum beyond MSY = overfished
- Depleted: Beyond MSY, crashed when below 10% of maximal recorded level = overfished
- Recovering: Still pressure but recovering from low state = overfished
- Underexploited: Up to 10% of maximum catch = underfished
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What is the Kobe plot?
- Biomass relative to exploitation rate
- Where lines cross = maximum annual production of stock is taken -
2 Structure of fishery system
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What are the components of fishery systems?
- Natural system
- Fish, ecosystem and biophysical environment
- Human system
- Fishers, post-harvest sectors, consumers, fishing households and communities + social/economic/cultural environment
- Fishery management system
- Policy and planning, management, development and research
- Natural system
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What is spacial scale?
- size (geographically and administratively)
- Important for determining boundaries and management system
- Determines the interactions between components and is dependent on the question -
What are other apporaches to characterise fishery systems?
Fisheries can also be characterized using:
- Geographically location
- Type of ecosystem
- Physical environment
- Depth of water
- Nature and behaviors of harvesters
- Socio-economic environment
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