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1. Greenhouse gas concentrations in tropical wetlands of the Cross River estuary, Nigeria.

Author

Andem, AB, Ojo, OB, Odey, RA, Eni, GE, Ibor, OR, Iwara, IA, and Eyo, VO

Abstract

The Cross River estuary is a coastal wetland in the south-eastern part of the Niger Delta region of Nigeria with its hydrological cycle largely dependent on precipitation. The purpose of this study was to determine the greenhouse gas (GHG) concentrations in water from selected wetlands in the Cross River estuary. Water samples were collected from the Ikang, Anantigha and Adiabo wetlands and the major GHGs were analysed using a gas chromatography coupled to a mass spectrometer. The mean concentration levels of carbon dioxide (CO2), nitrous oxide (N2O) and sulphur oxide (SO2) were measured in the water samples for both seasons. There was a significant difference in concentrations of all the greenhouse gases in the water samples for both seasons. The exceptions were: SO2 in Adiabo, CO2 in Anantigha and N2O in Ikang, which showed insignificant differences for both seasons. The water CO2 concentrations from the Adiabo wetland recorded the largest contribution of greenhouse gas levels, ranging between 6.88 ± 2.22 ppm and 11.02 ± 2.52 ppm. These levels were in the range of those reported in the Congo basin. The variation in concentrations could be due to location, hydrological characteristics, nutrient load injection or the nitrification and denitrification processes of wetlands. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Impact of fisheries cooperatives of fishing communities in Cross River State, Nigeria

Author

Ikpi, GU, Adinya, B, and Eni, GE

Abstract

The study evaluated the impact of fisheries cooperatives on fishing communities in Cross River State. Data obtained from 120 respondents were randomly selected from the study area. Descriptive statistics and Ordinary Least Square (OLS) regression analyses were the tools of data analyses. The results showed positive impact of co-operatives on the selected variables. F-values for the functions were positive and significant at 1% level indicating a significant linear relationship between variable (impact of co operatives) and the selected variables used for fish produced in Cross River State. Cobb-Douglass production function was the lead equation compared to linear and semi-log production functions as it had the highest R2 value of 0.77 and met other econometric criteria. Dubin Watson (DW) was 2 and within the specified range of 0 to 2 which implied auto-correlation. The results also showed that fisheries cooperatives had positive impact on income and improved living standard of the respondents. It is recommended that government should organize training workshops for the executive members of fisheries cooperatives to improve management of cooperative fund and human resources. Furthermore, non-members of fisheries cooperatives who did not benefit from cooperatives subsidies and incentives were encouraged to join cooperatives. Keywords: Effect, co-operative societies, higher revenue, living condition, Cross River State Journal of Aquatic Sciences 28 (1): 93-103 (2013)

Published
2013

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