All animals that interact with fishing gear are not necessarily captured, and all animals that are captured are not necessarily retained. Fishing practices and gear configuration, management regulations, and markets dictate which animals ultimately are retained or discarded. The impact of a fishery and the efficacy of management regulations can...
Concern over the incidental catch of non-targeted species in commercial and
recreational fisheries has greatly increased. Public attention, negative publicity,
controversies between differing fisheries and gear groups and the reauthorization of the
Magnuson-Stevens Fishery Conservation and Management Act have led to an increased
awareness of the issue. The Pacific halibut...
The US Magnuson-Stevens Act authorizes the use of onboard observers to
monitor commercial fisheries catch and bycatch (PFMC 2003). A question
of concern in implementing an observer program is that of the appropriate
level of observer coverage. Current practice varies by fishery; for example,
the California-Oregon drift gillnet fishery for...
The red king crab (Paralithodes camtschaticus) is an alien invasive species in the Barents Sea representing a value as well as a potential pest. A bio-economic model is applied analysing the costs that traditional fisheries incur as a result of the king crab invasion, as well as the income from...
The Pacific coast groundfish fishery is a diverse, important and lucrative commercial and recreational fishery. Part of this fishery’s monitoring process includes regular fishery-independent surveys for stock assessment. Although these fishery-independent surveys are cost-effective, they are susceptible to scientific uncertainty, and they do not currently sample in nearshore (water depth...
The case for assigning private property rights in fisheries has been
thoroughly studied but has lead to a new debate over whether rights should
be allocated to groups or individuals. The New England groundfish fishery
provides a rich context in which to study this question. Beginning in 2004,
several dozen...
An industry group has proposed a novel mechanism for management of the multispecies groundfish fishery off the northeastern United States. Under this mechanism, individual harvesters would be allocated a budget of points, to be expended landing fish. A regulatory body will set different prices, denominated in points, for landing each...
Outputs and inputs during 1994-2006 in the USA Northeast Multispecies (groundfish) fishery—including days fished for a group of 47 otter trawl vessels fishing out of New Bedford, Massachusetts, USA—were analyzed to test the hypothesis that restricting the annual days-at-sea (DAS) of individual fishing vessels increased Technical Efficiency (TE). The results...
The lack of selectivity in many fisheries may lead to discards and bycatch. Discards of under-sized or non-commercial species/individuals represent damage to the eco-system, an additional source of overfishing and a waste of resources. Bycatch may increase fishing pressure on species targeted by other fishermen. The purpose of the paper...
This paper examines the effects of a share-based management program in the Central Gulf of Alaska rockfish fishery. The program provides exclusive allocations to cooperatives of nine species, including one species for which retention is prohibited. Under the program, allocations of all species are required to fish and all catch,...
Bycatch is a nearly universal problem for fisheries, and it is becoming
increasingly common to place strict limits on allowable bycatch, either on
individuals or as a cap on an industry sector s bycatch. Individual bycatch
quotas strengthen individual incentives to avoid bycatch and may reduce
the likelihood that the...
The bycatch problem has remained troubling and persistent, even in
fisheries that have rationalized their target fisheries. The Alaskan Pollock
fishery is an example of a fishery struggling to contain the bycatch of
salmon in spite of a transformation of incentives associated with a
harvester coop system in the target...
The demersal fishery of southern Chile is a complex system including multiple species, fishing fleets and markets. Fishing activity is conducted under a rights-based system for southern hake (Merluccius australis) and hoki (Macroronus magellanicus), where a TAC is allocated in an even manner among fleets and operators. New management approaches...
Five species of marine turtles are found within the territorial waters of Vietnam, and all populations are declining. As part of a broader strategy and Action Plan, the Government of Vietnam and WWF Vietnam have launched a two-year project to: 1) document relative gear impacts, and geographic hotspots , for...
In 2000, the US Congress responded to the industry-wide constriction of the West Coast groundfish industry by allocating $5 million in disaster relief for Oregon, Washington, and California. Each state, with minimal federal oversight, designed and executed its own disaster response program to help impacted members of the fishing industry...
The Pacific Coast Groundfish Fishery harvests a diverse and large grouping of fishes, but it did not become heavily fished until around WWII. This makes the groundfish fishery a comparatively young fishery. Despite its youth, it is one of the largest and most lucrative fisheries in Oregon—with a current harvest...
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3
I. Introduction
The Pacific Coast GroundfishFishery harvests a diverse
In ecosystem-based fishery management, the ecosystem comprises the
natural sub-system and also human components, including user groups,
institutions and the processes of management. Regional Fishery
Management Organizations (RFMOs), particularly those designed to
manage tunas, were not established with an ecosystem view of the pelagic
environment. However, tuna RFMOs have evolved...
Bycatch is repeatedly noted as a primary problem of fisheries management
and as the foremost negative impact of commercial fishing. In the Bering
Sea pollock fishery, salmon bycatch reduction measures have included gear
modifications but have principally consisted of area closures. Bycatch
levels of chum and Chinook salmon have risen...
Since 1999, the scallop fisheries have been granted access to closed areas on Georges Bank, and the
access programs have been managed through individual vessel quotas for scallops, and a common-pool
total allowable catch (TAC) for yellowtail flounder bycatch. The scallop resource is neither overfished
and nor is overfishing occurring,...
There is growing recognition worldwide that the impacts of fishing on non-targeted components of marine ecosystems should be included in the assessment of fisheries sustainability. This leads to the inclusion of new constraints in evaluations of the long-term bio-economic performance of fisheries. In this paper, we analyze the implications of...
New Zealands quota management system is based on transferable
harvesting rights operating within regulated allowable harvest limits. The
system has evolved since its implementation in 1986. One particular
challenge has been the design of mechanisms to encourage the balancing of
catch against quota. A model is developed for a target...
This paper develops a count data model of target species and bycatch
production for an arbitrary number of species that handles correlation
between species and over time. The model is applied to a large observer
dataset for fishing trips taken from 1990 to 2008 for roughly 150 vessels
participating in...
In the quest to limit the bycatch of non-target species, marine protected
areas (MPAs) have been frequently utilized. MPAs are popular with
ecologists and fishery managers because of their relative ease of
administration, habitat protection benefits, and the widespread acceptance
of MPAs as an instrument of choice for the ecosystem...
The purpose of this research was to explore the impact of finfish bycatch on the ocean shrimp Pandalus jordani fishery using two methods. One method looked at the breakage of the shrimp by finfish bycatch in the nets. The other looked at the impact of bycatch on fishing decisions. At-sea...
The swordfish fishery is one of Hawaii's most lucrative, and also most highly regulated, fisheries. According to the United Fishing Agency (UFA) fish auction data in 2005, average swordfish (shallow-set)
revenue per trip was $76,897.03 and average tuna (deep-set) revenue per trip was $36,382.14. Swordfish trips, however, comprised of only...
Bycatch of non-targeted species in marine fisheries has become a major policy issue in fisheries management over recent years. One approach to curbing the bycatch problem is the voluntary sharing of detailed spatiotemporal information between vessels as an aide in individual bycatch avoidance as well as a tool to lower...
During April 1979 the Oregon Department of Fish and Wildlife participated in a survey of Pacific ocean perch (Sebastes alutus) in cooperation with the National Marine Fisheries Service and Washington Department of Fisheries. The survey occurred off the coasts of Oregon and Washington from Newport, Oregon to Cape Flattery. Planning...
With a value of NZ$ 85 million the seasonal squid fishery represents one of
New Zealands main export earners. The majority of catch is taken by trawl
from the Auckland Islands, 350 km south of New Zealand, which coincides
with the main breeding and foraging range of the rare Hookers...
After salmon bycatch levels reached record levels in 2006 and 2007 in the
Bering Sea pollock fishery, the North Pacific Fishery Management Council
(NPFMC) began consideration of a hard cap that would close the fishery if
it were reached. The NPFMC asked for input from economists at the
National Marine...
Implementation of the U.S. Marine Mammal Protection Act (MMPA)
generates costs to both the public and private sectors. While many of the
costs are complementary, some result in potential tradeoffs between
various groups incurring these costs. Under the MMPA, if estimated
bycatch of a species exceeds its Potential Biological Removal...
“This report summarizes activities from October 1, 1977 through September 30,
1978 (FY 77). Major activities were analysis of data collected from the cooperative coastwide rockfish survey, English sole (Sebastes alutus) tagging in PMFC areas 2B and 2C and lingcod (Ophiodon elongatus) tagging off Newport, Oregon in PMFC area 2c....
To date, the use of oceanographic data in fisheries management has been limited by the scarcity and the difficulty of accessing complete oceanographic datasets. Consequently, fish stocks are managed with limited knowledge about the habitat where fish live and incomplete understanding of what oceanographic conditions affect their populations. With the...
To increase the knowledge needed to successfully implement the ecosystem-based approach to fishery management, this dissertation investigates important issues within the economics of choice and the economics of displacement. In particular, a discrete choice model of the fishing location decision in the Newport, Oregon bottom trawl groundfish fishery is estimated...
A concern for the consequences of bycatch and discards in fisheries has led to the implementation of
new policies and fisheries management plans aimed at their reduction in many fisheries around the
world. Such plans have been developed for the Australian Commonwealth fisheries (the most recent
bycatch action plan extends...
"Prepared for the State/Federal Dungeness Crab Management Program. May 1974." "One of the initial objectives of the State/Federal Dungeness Crab Management Program is to evaluate crab mortality caused by certain fishery practices. The areas of most concern include mortality caused by trawling, handling of softshell and sublegal crabs, lost pots...