Results 11 to 20 of about 32 (27)

O QUE DIZEM AS PESQUISAS ACADÊMICAS SOBRE OS IMPACTOS DAS HIDRELÉTRICAS NA PESCA ARTESANAL? [PDF]

open access: yes, 2019
As barragens hidrelétricas ameaçam um terço da diversidade ictiofaunística de importantes bacias hidrográficas mundiais, podendo afetar milhares de pessoas que dependem da pesca para sua sobrevivência. Considerando a relevância da pesquisa acadêmica para
Athayde, Simone Ferreira de   +4 more
core   +2 more sources

Tailles de première maturité et de capture de six espèces de poisson-chat dans le delta de l’Ouémé au Bénin (Afrique de l’Ouest) [PDF]

open access: yes, 2012
Dans le moyen delta de l’Ouémé au Bénin, les tailles de première maturité et de capture des populations de six espèces de poisson-chat ont été étudiées.
Bonou, CA   +4 more
core   +2 more sources

Heavy Metal Contamination Levels in Clams (Galatea paradoxa, Born 1778) and Surface Sediments from Mono River Estuary, Togo, and its Health Implications [PDF]

open access: yes, 2021
Heavy metal pollution in aquatic ecosystems is one of the most important threats of human health and food chain. Thus, in this study, the level of Cd, Fe, Hg, Mn, Pb and Zn accumulation in surface sediments and in Galatea paradoxa, were investigated to ...
AFIADEMANYO, Komlan Mawuli   +4 more
core   +1 more source

Re-operating large dams to benefit all -- experiences from Akosombo and Kpong dams in Ghana [PDF]

open access: yes, 2017
- Large dams affect upstream and downstream ecosystems and livelihoods - Dam reoperation can in principle reintroduce a near natural flow regime while increasing overall annual hydropower production but it requires significant adjustments elsewhere to ...
Mul, Marloes L.
core   +1 more source

Quantification of the cross-sectoral impacts of waterweeds and their control in Ghana [PDF]

open access: yes, 2012
The Akosombo Dam on the Volta River in Ghana was built in 1963 to provide cheap energy to fuel industry and to accelerate the economic growth of the country.
Akpabey, Felix Jerry
core   +1 more source

The aquatic basis of ancient civilisations: the case of Synodontis schall and the Nile Valley [PDF]

open access: yes, 2000
This chapter focuses on the role of aquatic resources in the ancient economies of the Nile Valley. We suggest that these resources have been overlooked in traditional interpretations because of a reliance on wall paintings and carvings in tombs ...
Bailey, G., Luff, R.M.
core  

Mercury Levels in Sediment, Shellfish and Fish of a Water Body in the Niger Delta [PDF]

open access: yes, 2013
The concentrations of mercury in sediment and the muscle tissues of shellfish and fish of Bonny River and creeks around Okrika were determined in order to identify possible sources and indicator species that can be used to monitor pollution of the ...
A.C., Marcus,, A.N., Dibofori-Orji,
core   +1 more source

Fisheries Assessment and Trophic Modelling of Tono, Bontanga and Golinga Reservoirs, Ghana [PDF]

open access: yes, 2020
Due to the dispersed nature of inland fisheries, most individual systems are rarely adequately assessed or monitored, therefore reliable data on the target stocks are largely unavailable to implement management strategies.
Abobi, Seth Mensah
core  

Length weight relationship, food and feeding habits and condition factor of Synodontis melanoptera and Synodontis courtetti from Lower River Benue, Benue State, Nigeria [PDF]

open access: yes, 2017
Length weight relationship, food and feeding habit and condition factor of Synodontis melanoptera and Synodontis courtetti from Lower River were investigated. The results show that total length, weight and condition factor of S.
Adadu, M.O.   +3 more
core   +1 more source

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