A statistical survey of the artisanal fisheries of south-eastern Nigeria and the influence of hydroclimatic factors on catch and resource productivity

Moses, Boniface S.; Udoidiong, O. M.; Okon, Aniefiokmkpong Okokon

doi:10.1016/s0165-7836(01)00353-8

Cited by 15 publications

(15 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Los estudios de Moses et al (2002) y Lopes y Begossi (2011) señalan que las capturas en pesquerías artesanales de arrastre, red agallera, cuerda y buceo se ven influenciadas en el corto plazo por factores hidro-climáticos estacionales. Béné y Tewfik (2001) igualmente reportan cambios en los patrones de los buzos en función de condiciones ambientales y la experiencia de los buzos; los autores también reportan el efecto del mercado en los patrones de pesca.…”

Section: Discussionunclassified

“…Por esta razón, en la evaluación de estas pesquerías es necesario incluir aspectos relativos a las operaciones de pesca asociadas al uso de artes de pesca mixtos, que permitan discernir cambios en la composición de las capturas, y en la dinámica espacio-temporal del esfuerzo de pesca (Salas & Gaertner, 2004;Monroy, Salas, & Bello-Pineda, 2010), así como conocer los patrones de respuesta del pescador a cambios en el ambiente o regulaciones, y su efecto en la variabilidad de las capturas (Moses, Udoidiong, & Okon, 2002;Voges, Gordoa, & Field, 2005;Katsanevakis, Maravelias, Vassilopoulou, & Haralabous, 2010;Stevenson, Brian, & Dierking, 2011;Horta e Costa et al, 2013).…”

unclassified

See 1 more Smart Citation

Dinámica espacio-temporal del esfuerzo en una pesquería de buceo artesanal multiespecífica y sus efectos en la variabilidad de las capturas: Implicaciones para el manejo sostenible

Madrigal

Márquez

2014

RBT

View full text Add to dashboard Cite

Dinámica espacio-temporal del esfuerzo en una pesquería de buceo artesanal multiespecífica y sus efectos en la variabilidad de las capturas:Implicaciones para el manejo sostenible Abstract: Spatio-temporal dynamics of fishing effort in a multi-species artisanal diving fishery and its effects on catch variability: Insights for sustainable management. Artisanal diving fisheries are a source of income, employment and food security of coastal areas in many countries. Understanding the dynamics of these fisheries, including the spatial and temporal dynamics of fishing effort, gears and species can help to address the challenges involved in fisheries management. We aimed to analyze the differences in fishing strategies undertaken by fishers that use two different diving methods (hookah and free diving), the conditions and their potential impacts on catches when adjustments to those strategies are applied over time. For this, detailed information of fishing operations from artisanal boats in the North Pacific coast of Costa Rica was analyzed in two fishing seasons (2007-2008 and 2011-2012). Data were collected by onboard observers (fishing site, fishing time, species composition, depth and visibility). Additionally, interviews with divers were applied to obtain information of price per species, species volume and fishing operations. From the total number of trips during both seasons, hookah diving was represented by a sample size of 69.3%, while free diving, with a sample of 41.9%. More than 15 species were identified in each fishing season. Nevertheless, three categories had substantial contributions in both seasons with differences in the proportions for each case: green lobster (Panulirus gracilis), octopus (Octopus sp.) and parrotfish (Scarus perrico and S. ghobban). It is worth noting that an important proportion of catch was retained by fishers for personal consumption purposes, including species of high commercial value. Additional night diving activity, increased the number of dives from one season to another. Besides, cooperation processes in free diving fishing operations, and changes in fishing effort between seasons, defined important changes in fishing strategies. Potential causes of changes in fishing strategies and the implications for management to ensure the sustainability of these fisheries in the long term are discussed. Rev. Biol. Trop. 62 (4): 1565-1586. Epub 2014 December 01.

show abstract

Section: Discussionunclassified

unclassified

Dinámica espacio-temporal del esfuerzo en una pesquería de buceo artesanal multiespecífica y sus efectos en la variabilidad de las capturas: Implicaciones para el manejo sostenible

Madrigal

Márquez

2014

RBT

View full text Add to dashboard Cite

show abstract

“…When the relationship between hydro-climatic variability and fish catch abilty were analyzed statistically by using linear regression, correlation analysis and non-uniformity of the catch distribution of the year 2013 in Vavuniya reservoir, results revealed that when the hydroclimatic factors (RF and WL) increased, the monthly catch ability variables decreased. Welcomme (2001) and Moses et al (2002) also indicated that the hydro-climatic factors such as rainfall and water level in the reservoir affect the catch per unit effort as well as effort of fishers. Lower overall CPUE values in 2013 were due to the prevailed drought in 2012.…”

Section: Fig 2 Relationship Of Catch Data (Kg) With Rainfall Based mentioning

confidence: 99%

“…Both catch and productivity of a reservoir is influenced by seasonal variations in hydroclimatic factors (Moses et al, 2002;Potts, 2003). Climate change has both direct and indirect impacts on fish stocks that are exploited commercially.…”

Section: Introductionmentioning

confidence: 99%

Effects of hydro-climatic fluctuations on catchability of fish in Vavuniya reservoir, Sri Lanka

2015

View full text Add to dashboard Cite

“…Freshwater fish contribute a substantial portion of animal protein in the diets of coastal dwellers. They provide job opportunities to artisanal fishermen and women living near the coast who actively participate in fish processing and marketing as a livelihood support [1].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2017

JAMB

View full text Add to dashboard Cite

This study aimed to assessing the biodiversity of fishery resources of the Cross River System with implication for conservation and management. Sampling was carried out once a month for twelve months (January to December, 2016) with fish gears such as cast net, drift net, gill net, local traps and hook and line. Twenty six genera of fish were identified belonging to 22 families consists of 22703 individuals collected from all the stations. The most dominant families were Clupeidae and Cichlidae with respective relative abundance of 17.69% and 13.16% while the family Osteoglossidae was the least contributing only 0.77%to the fish taxa. For seasonal distribution, Mugilidae, Clariidae, Cichlidae, Gobiidae and Sciaenidae were abundant in both wet and dry seasons while Clupeidae, Bathyclupeidae, Carangidae and Sphyraenidae were low in wet season but high in dry season. There was no significant seasonal difference (p>0.05) in fish biodiversity and abundance. Like other water bodies in the Niger Delta, the Cross River system was found to possess desired potential for fisheries exploitation considering its high fish species diversity, composition and abundance. Although pollution level was not measured in this study, the continuous discharge of wastes/effluents into the aquatic ecosystem may pose deleterious effect on the biodiversity and abundance of the resident biota. Therefore to ensure sustainable biodiversity, conservation and management of fishery resources, there is need for stringent regulation and prevention of untreated wastes/effluents discharged from households, farms and industries into the aquatic environment.

show abstract

A statistical survey of the artisanal fisheries of south-eastern Nigeria and the influence of hydroclimatic factors on catch and resource productivity

Cited by 15 publications

References 8 publications

Dinámica espacio-temporal del esfuerzo en una pesquería de buceo artesanal multiespecífica y sus efectos en la variabilidad de las capturas: Implicaciones para el manejo sostenible

Dinámica espacio-temporal del esfuerzo en una pesquería de buceo artesanal multiespecífica y sus efectos en la variabilidad de las capturas: Implicaciones para el manejo sostenible

Effects of hydro-climatic fluctuations on catchability of fish in Vavuniya reservoir, Sri Lanka

Untitled

Contact Info

Product

Resources

About