Tag: water hyacinth

Lebsha fishing in Lake Burullus (Egypt) – an effective practice but unfortunately illegal

Photo credit: Magd Al-Bawaab (Egypt) Description: Abdel Rahman El Gamal (Founder of the website)   In this briefing I try to describe how some fishermen are practicing this “Lebsha fishing” in Lake Burullus, Egypt and hence I am not discussing the ill-legality of the said practice. In this method, fishermen brings in a biomass of …

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Permanent link to this article: https://fishconsult.org/?p=11642

Use of Lake Amatitlan water hyacinth in the production of cooking gas in Guatemala

Credit: Manuel Cano Alfaro (Guatemala) The excessive growth of water hyacinth (Eichornia crassipes) in Lake Lake Amatitlan, Guatemala which intended to remove the nutrients load in the lake has stimulated the idea of utilizing a part of water hyacinth in energy production whereas collected plants are placed in a bio-digester in a process whose end product …

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Permanent link to this article: https://fishconsult.org/?p=9979

Eutrophication of Lake Amatitlan in Guatemala – Video

Credit video: Manuel Cano Alfaro (Guatemala) Review: Abdel Rahman El Gamal This video shows the algal scum on the water surface of Lake Amatitlan in Guatemala. The lake receives great amount of the sewage from Guatemala City through different tributaries turning into a completely eutrophic body of water. The heavy nutrients load as represented in phosphorus and …

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Permanent link to this article: https://fishconsult.org/?p=9973

Production of briquette from water hyacinth in Guatemala

Credit: Manuel Cano Alfaro (Guatemala) This photo shows the utilization of water hyacinth (Eichornia crassipes) as a briquette. The caloric merit of the produced briquette (5048 cal/g) has been found high enough to justify its replacing to firewood. In order to produce this briquette, water hyacinth is milled and compacted under pressure.    

Permanent link to this article: https://fishconsult.org/?p=9867

Use of water hyacinth, Eichornia crassipes as a bio-fence in Lake Amatitlan, Guatemala

Credit: Manuel Cano Alfaro (Guatemala) The three photos show the formation of floating bio-fence (biobardas) in Lake Amatitlan (Guatemala) using water hyacinth, Eichornia crassipes to retain floating solid wastes entering the Lake from the Villalobos River.    

Permanent link to this article: https://fishconsult.org/?p=9803

Grow-out of tilapia in Lake Amatitlán (Guatemala)

Credit: Manuel Cano Alfaro (Guatemala) The photo shows a grow-out tank for tilapia located in Lake Amatitlán, Guatemala. The lake is one of four major lakes in Guatemala. The water supply to tilapia tank is pumped from a depth then pass through a filter of volcanic rocks and geotextile to reduce its ammonia content before …

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Permanent link to this article: https://fishconsult.org/?p=9775

Biological control of aquatic plants in River Nile using grass carp, Ctenopharyngodon idella in Egypt

Review: Abdel Rahman El Gamal (Founder of the website) The spread of nuisance aquatic plants (e.g. water hyacinth) has always caused serious problems (e.g. water loss and navigation) in River Nile and canals. Various control methods have been adopted to control water hyacinth in River Nile including mechanical (dredging) and chemical (herbicides) methods. Since 1990, …

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Permanent link to this article: https://fishconsult.org/?p=8934

Introduction and impact of water hyacinth in Rwanda water bodies

  The two photos show the invasion of water water hyacinth in a water body (bay) in Rwanda. Water hyacinth is an exotic plant species which was introduced into Rwanda. The dense of the plant growth my reach a level of closing water bodies.  

Permanent link to this article: https://fishconsult.org/?p=8537

Bangladesh aquaculture – Fish pond preparation (Deweeding)

Credit: Mohamed Mahmudun Nabi (Bangladesh) This photo shows the deweeding practice in a fish pond whereas the removal of aquatic floating weeds such as water hyacinth is carried out. Pond owner himself is removing the water hyacinth manually as a part of first step of pond preparation. Note: We decided not to watermark the photos in order not …

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Permanent link to this article: https://fishconsult.org/?p=2565

Artisanal fishery in the Nile (Uganda)

Credit:Enima Chris (Uganda) The overview of the Nile shows the heavy coverage of the river with aquatic plants such as water hyacinth and papyrus which tend to block fishing activities by the fishermen. However, fishermen cut through the plants and set their nets. The common gears and methods used include, gillnets, beach seine, tycooning, spears, …

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Permanent link to this article: https://fishconsult.org/?p=2385