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...
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...
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 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...
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,...
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...
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...
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...
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...