Glossary
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Otter trawl type of mobile fishing gear composed of a tapered net with
a large mouth; when in motion , water flows through two devices that
keep the mouth of the net open.
Parameter a variable or constant in a mathematical equation.
Partial Pressure the pressure of each gas in a mixture, assuming that
molecules of each gas are not influenced by those of the other gases.
Patch a collection of resources; can be as small as a group of insects on
a log, or as large as a pasture.
Photosynthesis organismal creation of glucose using solar energy , carbon dioxide and water.
Phototrophs organisms that synthesize energy using light.
Physical substrata the sea floor collection of habitat features such
as sand waves, gravel and boulders that form the topography of the
ocean.
Population a group of individuals of a species living in the same area .
Positive feedback in a system of interactive components, the action of
one component results in restimulation of the initial component, thereby
amplifying the action .
Predictive modeling real data resulting from scientific studies, lab work
or field work used as inputs in a model with the intent of predicting the
reaction of a system to certain variables.
Production function an equation representing the relation between inputs used to produce a good or service and the final product.
Property rights the legal rights or privileges that come with ownership
of space.
Rate of reproduction the number of births per unit of time.
Redfield ratio the ratio of carbon, nitrogen , and phosphorous atoms
found in plant tissue as a result of photosynthesis; although this ratio
varies according to the habitat of a plant, it is generally lo6c:16N:IP.
Rents money received over and above what is necessary to pay for the
use of a resource.
Returns to Scale relation between changes in the quantity of inputs into
a process and the resultant changes in output from that process; increasing (decreasing) returns to scale indicate that output increases more than
(less than) x-fold if all inputs are increased x-fold.
Stakeholder anyone who represents the interests of a group on an issue,
project or commodity.
State variable a variable that describes a certain aspect of a system; may
represent an accumulation of materials or information , or may be a pure
indicator of the aspect.
Steady-state equilibrium attained in a dynamic system; results as a balance between positive and negative feedback processes.
Stock externality outside factors that control the abundance of fish in a
stock , whereby abundance is not solely dependent on reproductive fitness, but is also determined by the intensity of fishing effort.
429
Otter trawl type of mobile fishing gear composed of a tapered net with
a large mouth; when in motion , water flows through two devices that
keep the mouth of the net open.
Parameter a variable or constant in a mathematical equation.
Partial Pressure the pressure of each gas in a mixture, assuming that
molecules of each gas are not influenced by those of the other gases.
Patch a collection of resources; can be as small as a group of insects on
a log, or as large as a pasture.
Photosynthesis organismal creation of glucose using solar energy , carbon dioxide and water.
Phototrophs organisms that synthesize energy using light.
Physical substrata the sea floor collection of habitat features such
as sand waves, gravel and boulders that form the topography of the
ocean.
Population a group of individuals of a species living in the same area .
Positive feedback in a system of interactive components, the action of
one component results in restimulation of the initial component, thereby
amplifying the action .
Predictive modeling real data resulting from scientific studies, lab work
or field work used as inputs in a model with the intent of predicting the
reaction of a system to certain variables.
Production function an equation representing the relation between inputs used to produce a good or service and the final product.
Property rights the legal rights or privileges that come with ownership
of space.
Rate of reproduction the number of births per unit of time.
Redfield ratio the ratio of carbon, nitrogen , and phosphorous atoms
found in plant tissue as a result of photosynthesis; although this ratio
varies according to the habitat of a plant, it is generally lo6c:16N:IP.
Rents money received over and above what is necessary to pay for the
use of a resource.
Returns to Scale relation between changes in the quantity of inputs into
a process and the resultant changes in output from that process; increasing (decreasing) returns to scale indicate that output increases more than
(less than) x-fold if all inputs are increased x-fold.
Stakeholder anyone who represents the interests of a group on an issue,
project or commodity.
State variable a variable that describes a certain aspect of a system; may
represent an accumulation of materials or information , or may be a pure
indicator of the aspect.
Steady-state equilibrium attained in a dynamic system; results as a balance between positive and negative feedback processes.
Stock externality outside factors that control the abundance of fish in a
stock , whereby abundance is not solely dependent on reproductive fitness, but is also determined by the intensity of fishing effort.