Corpus ID: 14178127

LONG-TERM TRENDS IN DEMERSAL FISHERY RESOURCES OF GHANA IN RESPONSE TO FISHING PRESSURE

@inproceedings{Pressure2005LONGTERMTI,
  title={LONG-TERM TRENDS IN DEMERSAL FISHERY RESOURCES OF GHANA IN RESPONSE TO FISHING PRESSURE},
  author={Fishing Pressure and K. A. Koranteng and Daniel Pauly},
  year={2005}
}
A brief review is presented of the structure of the Ghanaian fishing fleet, and of the changes they induced on their resource base since the 1960s. These change consist of a reduction of the biomass of longer lived fishes, particularly in shallower waters, and in conjunction with environmental fluctuation, the creation of opportunities for invasive species of fish (triggerfish Balistes carolinensis) and invertebrates (e.g., scallops) to experience short-lived population outburst. The relative… Expand

Figures and Tables from this paper

Influence of Environmental Factors and Fishing Effort on Demersal Fish Species in Ghana
Separating effects of fishing from responses of environmental factors is a key problem for fisheries scientists. I used data from fishery-independent trawl surveys (6 years data from 1999 – 2016) toExpand
Species Composition, Abundance, and Growth of Three Common Fish Species of the Volta Estuary, Ghana
TLDR
The results indicated that temperature and salinity caused most variation in fish abundance, and precautionary management measures should be implemented to regulate their exploitation to help sustain fish populations in the Volta estuary and the adjacent freshwater and marine environments. Expand
Defining and estimating global marine fisheries bycatch
Unselective fishing catches non-target organisms as ‘bycatch’—an issue of critical ocean conservation and resource management concern. However, the situation is confused because perceptions of targetExpand
The Effects of Poverty Reduction Strategies on Artisanal Fishing in Ghana: The Case of Keta Municipality
This paper assesses the level of poverty in Ghana after three decades of successive implementation of numerous poverty reduction strategies including Structural Adjustment Program (SAP) by variousExpand
Industrial and Environmental Pressures Affecting Fante-Speaking Artisanal Fishers of Anomabo, Ghana: A Case Study
A great deal of literature exists regarding the global fisheries crisis. However, the human element has been largely overlooked. This study seeks to understand the relationship that traditionalExpand
Risk of heavy metal ingestion from the consumption of two commercially valuable species of fish from the fresh and coastal waters of Ghana
TLDR
The consumption of the two species of fish in Ghana would essentially be of little or no consequence to consumers as toxicity depends on the concentration and quantity of a pollutant consumed, safe maximum consumption rate of C. nigrodigitatus and Hg in B. auritus is found. Expand

References

SHOWING 1-10 OF 48 REFERENCES
The impacts of environmental forcing on the dynamics of demersal fishery resources of Ghana
The dynamics of demersal fish species assemblages and stocks on the continental shelf of Ghana, West Africa were investigated using data from trawl surveys conducted between 1963 and 1990, and inExpand
LONG~ERM RESPONSES OF THE DEMERSAL FISH ASSEMBLAGES OF GEORGES BANK
ABSTRACf The resilience of demersal fish assemblages on Georges Bank was investigated with data from seasonal bottom trawl surveys conducted by the Northeast Fisheries Center, National MarineExpand
Conservation of coastal lagoons in Ghana: the traditional approach
Abstract The lagoons Sakumo and Djange are two of the many coastal lagoons in Ghana which provide valuable resources to the local communities and offer important roosting, nesting and feedingExpand
The Effect of Fishing on the Marine Finfish Biomass in the Northwest Atlantic from the Gulf of Maine to Cape Hatteras
Relationships between fishing eftort, total finfish community biomass, and yield are determined using data on finfish biomass measured by research vessel trawl surveys and commercial catch and effortExpand
Western Africa: A Fish Basket of Europe Past and Present
This article shows that despite increasing catches by foreign fishing fleets, the economic growth and social benefits from marine resources have not been met for many western African countries thatExpand
On reason, mythologies and natural resource conservation
In 1971, I spent five months in Ghana, West Africa, collecting data for an MSc thesis, "On the Ecology and Fishery of a Small West African Lagoon". I was puzzled at the time by the behavior of theExpand
Towards sustainability in world fisheries
TLDR
Zoning the oceans into unfished marine reserves and areas with limited levels of fishing effort would allow sustainable fisheries, based on resources embedded in functional, diverse ecosystems. Expand
Structure and dynamics of demersal assemblages on the continental shelf and upper slope off Ghana, West Africa
TLDR
Using two-way indicator species analysis and detrended correspondence analysis, species on the continental shelf and upper slope of Ghana were classified into 6 assemblages, which are influenced by physico-chemical parameters of the water masses, mainly tempera- ture, salinity and dissolved oxygen. Expand
Fishing down marine food webs
TLDR
The mean trophic level of the species groups reported in Food and Agricultural Organization global fisheries statistics declined from 1950 to 1994, and results indicate that present exploitation patterns are unsustainable. Expand
On the ecology of a small West..African lagoon
A small coastal lagoon near Tema, Ghana, has been studied from August to December 1971. Data on temperature, salinity and exchange of water with the sea are given for January to December 1971. TheExpand
...
1
2
3
4
5
...