annotated bibliography of fisheries economics literature - Office of ...

Physics, University of Maine, Orono, Me, May, 96 pp.
Chaotic behavior occurs in a variety of physical, chemical and
biological systems when a constraint is imposed on the total energy or mass of
the system. In population models, for example, this constraint can reflect an
ecosystem's limited carrying capacity. The focus of this research is the
onset of chaos in such systems, probed by simulating simple constrained
dynamical models. The simulations track the time evolution of systems with
characteristic input, amplification and dissipation terms, analogous to
population models with birth, growth and mortality. These model features are
chosen so that the system exhibits a stable steady-state solution in the
absence of the constraint. When the constraint is implemented, we find that
the qualitative features of the transition from regular to the qualitative
features of the transition from regular to chaotic dynamics are extremely
sensitive to the model dimensionality, and differ greatly from the widely
studied period-doubling route to chaos exhibited by a large group of one
dimensional nonlinear systems. In low dimensional cases, long periodic cycles
are prevalent, whereas higher dimensional systems show intermittency preceding
chaos. Fourier transforms of time series have been used to identify
intermittent, quasiperiodic and chaotic regimes. Eigenvalue analysis in the
vicinity of fixed solutions indicates that a wide range of biological inputs
that do not yield chaos in conventional population models do generate chaotic
dynamics once the carrying capacity is incorporated into the model.
Characteristics of the onset of chaos observed in these models could be
relevant to other problems with similar types of constraints, such as
turbulence and multistep chemical reactions.
Samples, Karl C. and Richard C. Bishop (1985). "Estimating the Value of
Variations in Anglers' Success Rates: An Application of the
Multiple-Site Travel Cost Method." Marine Resource Economics,
2(1):55-74.
An estimation method is presented to measure sport fishermen's valuation
of exogenous changes in fishing quality (catch rates). A theoretical model is
initially presented to show how variations in prevailing catch rates influence
an angler's valuation of recreational fishing. A two-stage estimation
approach is suggested that capitalizes on the notion that angler consumer
surplus is sensitive to changes in success rates. The procedure entails first
estimating sportfishing values at qualitatively different fishing sites using
a multiple-site travel cost approach. Afterward, the sensitivity of estimated
values to different success rate levels is measured using a separate
regression procedure. An empirical application of this two-stage method to
Lake Michigan sportfishing is given. It is estimated that for Lake Michigan
anglers who fish for trout and salmon, a 10% increase in success rates will
increase average trip values by $0.30.
Samples, Karl C. and John T. Sproul (1985). "Fish Aggregating Devices
and Open-Access Commercial Fisheries: A Theoretical Inquiry."
Bulletin of Marine Science, 37(1):305-317.
This paper explores the economic consequences of deploying fish
aggregating devices (FADs) in developed open access or common property
commercial fisheries. The objective is to understand how FAD installation can
be expected to influence sustained gross revenues (sustained harvests),
employment and fishermen's profits over the long run. A Mathematical
bioeconomic model is presented that illuminates the biological interdependence
between fishing that occurs at FAD locations and fishing that is directed at a
background fish stock. Two models of biological interaction are considered.
Model A assumes that high levels of FAD fishing effort will not reduce the
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