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

caught. Births appear to be seasonal, occurring mainly in August and
September. A growth curve has been constructed, making it possible to
estimate ages on the basis of body length. Young accompany their mothers for
more than a year after birth. Sexual maturity is attained at about 2 years of
age by both sexes. Mature Dugongs have a total body length of 2.4 meters or
longer. The majority of Dugongs caught after the first 14 months of shark
netting were young animals estimated to be from 1 to 3 years old. There were
no size and sex data available for the first 14 months of netting. Dugongs
prefer extensive protected shallow water areas where they feed selectively on
four genera of sea grasses occurring near Townsville. Aspects of Dugong
conservation and the need for extensive ecological work discussed.
Helfand, Gloria E. and Brett W. House (1995). Regulating Nonpoint Source
Pollution Under Heterogeneous Conditions. American Journal of
Agricultural Economics, 77(4):1024-1032.
Because of difficulties in measuring effluent from nonpoint pollution,
proposals for regulating agricultural runoff often suggest instruments applied
to inputs or management practices. When pollution functions vary across
sources, uniform input instruments cannot achieve a least cost pollution
reduction, but efficient instruments may be difficult to administer. In this
paper we analyze lettuce production on two soils in California s Salinas
Valley to consider empirical costs associated with uniform input taxes and
regulations. The results suggest that uniform instruments may mot be costly
relative to an efficient baseline. Though taxes are more efficient, farmers
have higher profits with regulations.
Helgath, Sheila and Richard Rainery (1987). "Fishery Management
Alternatives." Research Request Number 87-003188, The Alaska
Board of Fisheries, Senate Advisory council, Alaska State
Legislature, October, 106 pp.
This report considers some of the pertinent issues central to fisheries
management in Alaska in terms of the effectiveness of the Board of Fisheries
as presently organized given the collapse of the December, 1986 meeting and
the renewed call for a reappraisal of the board structure and process.
Hellerstein, Daniel (1995). Welfare Estimation Using Aggregate and
Individual-Observation Models: A Comparison Using Monte Carlo
Techniques. American Journal of Agricultural Economics, 77(3):620-630.
Due to the weak behavioral foundations of aggregate demand models, zonal
travel cost models have been largely abandoned in favor of models based on
individual observations. However, sample selection difficulties in individual
observation models often require the use of distribution sensitive limited
dependent variables estimators. In this paper I use Monte Carlo simulations
to investigate whether the bias form aggregation is worse than possible bias
from these narrowly specified estimators. Somewhat surprisingly, the results
indicate that zonal models often outperform the individual observation models,
especially when using an aggregate model that incorporates intra zonal
variance of the explanatory variables.
Hellsten, Martin (1988). "Socially Optimal Forestry." Journal of
Environmental Economics and Management, 15:387-394.
The Faustmann rule is the major contribution of economic theory to the
analysis of forestry management. It is typical to consider the Faustmann rule
in the context of a model of a forestry firm in which there is some
periodicity in the rate of harvesting over time. This paper on the other hand
2 9 1