04:35
nantaporn
Brazilian workers have removed more than 33 tonnes of dead fish from the 2016 Olympic rowing and canoeing venue in Rio de Janeiro.
A team of more than 60 people have been working since last week to clear the remains from Lagoa Rodrigo de Freitas.
Scientists said the fish were starved of oxygen because of pollution.
Water quality has also been a major concern for organisers in Guanabara Bay, where Olympic sailing events are due to be held.
The overwhelming smell at the lagoon has led to complaints from residents and members of local rowing clubs.
Rio's environmental secretariat said on Thursday that the deaths were the result of a sudden change in water temperature, but scientists rejected that explanation.
Paul Rosman, an oceanographer who works at the lagoon, told Reuters that a rise in algae blooms had led to a build up of carbon dioxide in the water.
"There was a big effort to stop sewage and we removed everything possible," he added.
"But reducing the sewage doesn't mean you have reduced the algae blooms. That happens because of the excess of nutrients in the water."
Tonnes of dead fish have appeared on the surface of the lagoon before.
Mr Rosman said successive state and city governments had ignored proposals to improve water quality by dredging canals that lead into the sea.
Rio Governor Luiz Fernando Pezao acknowledged earlier this week that there was "not going to be time'' to finish the cleanup ahead of the games next August.
In January government officials also stated they would miss their target of an 80% reduction in water pollution in Guanabara Bay.
Canon EOS Rebel T5 EF-S 18-55mm IS II Digital SLR Kit (^O^) Nikon D3300 24.2 MP CMOS Digital SLR with AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR II Zoom Lens (Black) =^.^=
Canon EOS 5D Mark III 22.3 MP Full Frame CMOS with 1080p Full-HD Video Mode Digital SLR Camera (Body) (~.^)s
Nikon D750 FX-format Digital SLR Camera Body (*^o^*)
Canon EOS 6D 20.2 MP CMOS Digital SLR Camera with 3.0-Inch LCD (Body Only) =^.^=
Nikon D810 FX-format Digital SLR Camera Body (o^.^o)
Canon EOS Rebel T5i Digital SLR with 18-55mm STM Lens ^-^b
Canon EOS 70D Digital SLR Camera (Body Only) (*^o^*)
Canon EOS 7D Mark II Digital SLR Camera (Body Only) (^_-)
Nikon D7200 DX-format DSLR Body (Black) (>_<)
Canon EOS Rebel SL1 Digital SLR with 18-55mm STM Lens (>_<)
Nikon D7000 DSLR (Body Only) (^_-)
Canon EOS 70D Digital SLR Camera with 18-135mm STM Lens (>_<)
Canon EOS 6D 20.2 MP CMOS Digital SLR Camera with 3.0-Inch LCD and EF24-105mm IS Lens Kit +_+;;
Nikon D750 FX-format Digital SLR Camera w/ 24-120mm f/4G ED VR AF-S NIKKOR Lens (>_<)
Nikon D3300 DX-format DSLR Kit w/ 18-55mm DX VR II & 55-200mm DX VR II Zoom Lenses and Case (^.^)
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Nikon D610 24.3 MP CMOS FX-Format Digital SLR Camera (Body Only) (^O^)
Nikon D7100 24.1 MP DX-Format CMOS Digital SLR (Body Only) (>_<)
Nikon D5300 24.2 MP CMOS Digital SLR Camera with 18-140mm f/3.5-5.6G ED VR AF-S DX NIKKOR Zoom Lens (Black) ^-^b
Panasonic LUMIX DMC-GH4KBODY 16.05MP Digital Single Lens Mirrorless Camera with 4K Cinematic Video (Body Only)... =^.^=
Nikon D7200 DX-format DSLR w/ 18-140mm VR Lens (Black) (*^o^*)
Canon EOS 5D Mark III 22.3 MP Full Frame CMOS Digital SLR Camera with EF 24-105mm f/4 L IS USM Lens (>_<)
Nikon D3100 DSLR Camera with 18-55mm f/3.5-5.6 AF-S Nikkor Zoom Lens (Discontinued by Manufacturer) (^.^)
Panasonic Lumix DMC-FZ200 12.1 MP Digital Camera with CMOS Sensor and 24x Optical Zoom - Black (~.^)s
Nikon D3300 24.2 MP CMOS Digital SLR with AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR II Zoom Lens and Nikon 55-200mm... (^_-)
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Nikon D5300 24.2 MP CMOS Digital SLR Camera with 18-55mm f/3.5-5.6G ED VR II AF-S DX NIKKOR Zoom Lens (Black) (^O^)
Canon EOS 70D Digital SLR Camera with 18-55mm STM Lens (^_-)
Canon EOS Rebel SL1 Digital SLR with 18-55mm STM Lens (White) o(>_<)o
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Nikon 55-300mm f/4.5-5.6G ED VR AF-S DX Nikkor Zoom Lens for Nikon Digital SLR Bulk Package Deal + Pouch Case... (~.^)s
Nikon D3300 24.2 MP CMOS Digital SLR with AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR II Zoom Lens (Red) (^O^)
Canon EOS Rebel T5 Digital SLR Camera with EF-S 18-55mm IS II + EF 75-300mm f/4-5.6 III Bundle (o^.^o)
Nikon D5500 DX-format Digital SLR Body (Black) +_+;;
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Canon EOS Rebel SL1 Digital SLR Camera (Body Only) (*^.^)
Canon EOS 7D Mark II Digital SLR Camera with 18-135mm IS STM Lens (o^.^o)
Canon EOS 60D 18 MP CMOS Digital SLR Camera with 18-135mm f/3.5-5.6 IS UD Lens (~.^)s
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Canon EOS Rebel T3i Digital SLR Camera Body Only (discontinued by manufacturer) (^_-)
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Canon EOS Rebel SL1 18.0 MP CMOS Digital SLR Full HD 1080 Video Body with EF-S 18-55mm IS STM Lens With 58mm 2x... (*^.^)
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Nikon D3100 Digital SLR Camera & 18-55mm G VR DX AF-S Zoom Lens (Red) (*^.^)
Canon EOS 60D 18 MP CMOS Digital SLR Camera Body Only (discontinued by manufacturer) (*^.^)
Nikon D7000 16.2 Megapixel Digital SLR Camera with 18-55mm Lens (Black) o(>_<)o
Nikon D810 FX-format Digital SLR w/ 24-120mm f/4G ED VR Lens (>_<)
Nikon D7000 16.2 Megapixel Digital SLR Camera with 18-105mm Lens (Black) o(>_<)o
Nikon D4S 16.2 MP CMOS FX Digital SLR with Full 1080p HD Video (Body Only) (^_^)
Nikon D5300 24.2 MP CMOS Digital SLR Camera with 18-55mm f/3.5-5.6G ED VR II AF-S DX NIKKOR Zoom Lens (Black)... =^.^=
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Canon EOS Rebel T5 1200D 18MP EF-S Body Full HD 1080p Video Digital SLR Camera
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Pentax K-50 16MP Digital SLR Camera Kit with DA L 18-55mm WR f3.5-5.6 and 50-200mm WR Lenses (Black) (>_<)
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Canon EOS 5D Mark II Full Frame DSLR Camera (Body Only) (OLD MODEL)
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Canon EOS 7D 18 MP CMOS Digital SLR Camera with 28-135mm f/3.5-5.6 IS USM Lens (discontinued by manufacturer)
Pentax K-50 16MP Digital SLR Camera with 3-Inch LCD - Body Only (Black) (^_^)
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Nikon COOLPIX L830 16 MP CMOS Digital Camera with 34x Zoom NIKKOR Lens and Full 1080p HD Video (Plum) (^O^)
Leica 10773 M-P (Typ 240) 24MP SLR Camera with 3-Inch LCD (Black) (^O^)
Nikon D610 24.3 MP CMOS FX-Format Digital SLR Camera Bundle with 24-85mm and 70-300mm Nikkor VR AF-S Lenses o(>_<)o
Canon EOS 50D DSLR Camera (Body Only) (Discontinued by Manufacturer) (^_-)
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Canon EOS 1D Mark IV 16.1 MP CMOS Digital SLR Camera with 3-Inch LCD and 1080p HD Video (Body Only) =^.^=
Canon EOS Rebel T3 12.2 MP CMOS Digital SLR Camera and DIGIC 4 Imaging (Body) - With 1-year USA Warranty (^.^)
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Nikon D3100 DSLR Camera with 18-55mm VR 55-200mm Zoom Lenses (Black) (Discontinued by Manufacturer) (~.^)s
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Canon EOS Rebel SL1 18.0 MP CMOS Digital SLR Kit with 18-55mm EF-S IS STM Lens & Canon EF-S 55-250mm f/4-5.6 IS...
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Pentax K-50 16MP Digital SLR Camera with 3-Inch LCD - Body Only (Red) (^O^)
Pentax K-5 IIs 16.3 MP DSLR Body Only (Black) ^-^b
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Nikon D5200 24.1 MP DX-Format CMOS Digital SLR Camera with 18-140mm VR NIKKOR Zoom Lens (Discontinued by Manufacturer... (>_<)
Nikon D300 DX 12.3MP Digital SLR Camera (Body Only) (*^o^*)
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Canon EOS 5D Mark III Digital SLR Camera with EF 24-105mm L IS & 70-200mm f/2.8L USM Lens + 64GB Card + Grip +... (*^o^*)
Olympus OM-D E-M1 Micro Four Thirds Digital Camera w/ 12-40mm f/2.8 Lens - International Model (No Warranty) (*^o^*)
Canon EOS Rebel T3i Digital SLR Camera with EF-S 18-135mm f/3.5-5.6 IS Lens (discontinued by manufacturer) +_+;;
Nikon D750 Digital SLR Camera (Body Only) [Import Model] (^_^)
Nikon D90 12.3MP DX-Format CMOS Digital SLR Camera with 18-105 mm f/3.5-5.6G ED AF-S VR DX Nikkor Zoom Lens (OLD... =^.^=
Nikon D5300 24.2 MP CMOS Digital SLR Camera with Built-in Wi-Fi and GPS Body Only (Grey) (~.^)s
Canon EOS Rebel T4i DSLR (Body Only) (OLD MODEL) (^.^)
Pentax K-50 16MP Digital SLR Camera Kit with DA 18-135mm WR f3.5-5.6 Lens (Black) (^O^)
Nikon D4 16.2 MP CMOS FX Digital SLR with Full 1080p HD Video (Body Only) (OLD MODEL) (>_<)
Nikon D5200 CMOS DSLR with 18-55mm f/3.5-5.6 AF-S NIKKOR Zoom Lens (Red) (Discontinued by Manufacturer) (*^.^)
Pentax K-S2 20MP DSLR Kit w/ 18-50mm WR (Black) o(>_<)o
