12 Questions
What is the term used to refer to the total number of a specific kind of fish in a population?
Absolute Abundance
Which term describes the breakdown of different age groups of a kind of fish in a population or sample?
Age Frequency
What does the term 'Bycatch' refer to in fisheries management practices?
Harvest of fish other than the targeted species
Who sets the Acceptable Biological Catch (ABC) each year for a species or species group?
Scientific group created by the management agency
Which term refers to the total weight or volume of a species in a given area?
Biomass
What does Aquaculture involve?
Raising fish or shellfish under controlled conditions
What does the term 'exclusive economic zone' refer to?
All waters from the seaward boundary of coastal states out to 200 nautical miles.
Which term refers to the rate of removal of fish from a population by fishing?
Fishing Mortality
What is the main purpose of a Fishery Management Plan (FMP)?
To achieve specified management goals for a fishery
What does Catch Per Unit of Effort (CPUE) measure?
The number of fish caught per amount of effort
In commercial fishing, what does 'economic efficiency' refer to?
"Producing fewer fish would bring the cost lower than what buyers are paying."
What does 'cohort' refer to in relation to fish?
A group of fish spawned during a given period
Study Notes
Fisheries Management Terms
- Absolute Abundance: The total number of a specific kind of fish in a population, which is rarely known but often estimated from relative abundance.
Management Agency Terms
- Acceptable Biological Catch (ABC): The range of allowable catch for a species or species group set by a scientific group each year.
- Annual Total Allowable Catch (TAC): The annual catch limit set by a management agency based on the ABC estimate.
Fish Population Analysis
- Age Frequency or Age Structure: A breakdown of the different age groups of a kind of fish in a population or sample.
- Cohort: A group of fish spawned during a given period, usually within a year.
Fishing Effort and Catch
- Annual Mortality (A): The percentage of fish dying in one year due to both fishing and natural causes.
- Catch: The total number or poundage of fish captured from an area over some period of time, including fish that are caught but released or discarded.
- Catch Per Unit of Effort (CPUE): The number of fish caught by an amount of effort, typically a combination of gear type, gear size, and length of time gear is used.
- Effort: The amount of time and fishing power used to harvest fish, including gear size, boat size, and horsepower.
Economic Efficiency and Yield
- Economic Efficiency: The point at which the added cost of producing a unit of fish is equal to what buyers pay.
- Maximum Economic Yield: The point at which producing fewer fish would bring the cost lower than what buyers are paying, and producing more fish would raise the cost higher than what buyers are paying.
Zones and Management
- Exclusive Economic Zone (EEZ): All waters from the seaward boundary of coastal states out to 200 nautical miles.
- Fishery Conservation Zone (FCZ): The area from the seaward limit of state waters out to 200 miles, also known as the EEZ.
- Fishery Management Plan (FMP): A plan to achieve specified management goals for a fishery, including data, analyses, and management measures.
- Fisheries Management: The integrated process of information gathering, analysis, planning, consultation, decision-making, allocation of resources, and formulation and implementation with enforcement as necessary to regulate fisheries activities.
Test your knowledge of key terms used in relation to fisheries management practices, including Absolute Abundance and Acceptable Biological Catch (ABC). Learn about important concepts in fish population management.
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