Gazi Anowarul Hoque :
The presence of Blue button at the coast in Bay of Bengal is the dangerous signal of climate change. This will largely affect marine food chain, experts say.
Blue button is the species of jelly fish (Porpita porpita). It lives on the surface and are not real jellyfish but are Chondrophores. It is the float which is like a round disc and is a golden-brown colour. It is typically 1.5 inches wide or less, and has a single mouth underneath which is used for both the intake of nutrients and the dispersal of wastes.
Blue button is found before one and a half years ago at the ST Martin’s coast. Rise in sea temperature is responsible for their presence, according to the experts.
Abdullah Harun Chowdhury, Ph.D, Professor of Environmental Science, Khulna University, who involved in research work on ‘Environmental threats on the biodiversity of St. Martin’s Island of Bangladesh’ for ten years , told The New Nation on Thursday that Blue button was found due to climate change and pollution.
There are huge wastes from oil that comes from tourist boats. For this reason, the water temperature of the Island has risen to 1.5 degree Celsius in last ten years.
“The presence of Blue button is the sign of ecological imbalance in the sea. It may affect Bangladesh’s only coral reef St. Martin’s and fisheries could be reduced. Overall, marine sea food may be affected,” he said.
M. Shah Nawaz Chowdhury, lecturer of Institute of Marine Science and Fisheries of Chittagong University collected samples of the species and examines at its laboratory. Professors of the institute Sayedur Rahman Chowdhury, Md Rashed-Un-Nabi, M Shahadat Hossain and Associate Prof S M Sharifuzzaman assisted to it.
The research team of Chittagong University wrote an article on the species in German based Ocean Science Journal ‘Springer’ Volume 51(2) published in June, 2016.
The article said that the occurrence of Porpita porpita is reported, for the first time, in the coral island of St. Martin’s located in the southeastern coastal region of Bangladesh.
P. porpita was found to occur in the lower littoral zone and beach rock pools, together with molluscan species, and collected during the pre-monsoon season when both water temperature (> 30°C) and salinity (> 30‰) tend to reach a maximum, the article said.
M. Shah Nawaz Chowdhury said such animals have been found in the oceans like Pacific Ocean, Atlantic Ocean and Indian Ocean but the presence in the Bay of Bengal make the scientists concern. It may affect marine food chain and biodiversity.
The presence of Blue button at the coast in Bay of Bengal is the dangerous signal of climate change. This will largely affect marine food chain, experts say.
Blue button is the species of jelly fish (Porpita porpita). It lives on the surface and are not real jellyfish but are Chondrophores. It is the float which is like a round disc and is a golden-brown colour. It is typically 1.5 inches wide or less, and has a single mouth underneath which is used for both the intake of nutrients and the dispersal of wastes.
Blue button is found before one and a half years ago at the ST Martin’s coast. Rise in sea temperature is responsible for their presence, according to the experts.
Abdullah Harun Chowdhury, Ph.D, Professor of Environmental Science, Khulna University, who involved in research work on ‘Environmental threats on the biodiversity of St. Martin’s Island of Bangladesh’ for ten years , told The New Nation on Thursday that Blue button was found due to climate change and pollution.
There are huge wastes from oil that comes from tourist boats. For this reason, the water temperature of the Island has risen to 1.5 degree Celsius in last ten years.
“The presence of Blue button is the sign of ecological imbalance in the sea. It may affect Bangladesh’s only coral reef St. Martin’s and fisheries could be reduced. Overall, marine sea food may be affected,” he said.
M. Shah Nawaz Chowdhury, lecturer of Institute of Marine Science and Fisheries of Chittagong University collected samples of the species and examines at its laboratory. Professors of the institute Sayedur Rahman Chowdhury, Md Rashed-Un-Nabi, M Shahadat Hossain and Associate Prof S M Sharifuzzaman assisted to it.
The research team of Chittagong University wrote an article on the species in German based Ocean Science Journal ‘Springer’ Volume 51(2) published in June, 2016.
The article said that the occurrence of Porpita porpita is reported, for the first time, in the coral island of St. Martin’s located in the southeastern coastal region of Bangladesh.
P. porpita was found to occur in the lower littoral zone and beach rock pools, together with molluscan species, and collected during the pre-monsoon season when both water temperature (> 30°C) and salinity (> 30‰) tend to reach a maximum, the article said.
M. Shah Nawaz Chowdhury said such animals have been found in the oceans like Pacific Ocean, Atlantic Ocean and Indian Ocean but the presence in the Bay of Bengal make the scientists concern. It may affect marine food chain and biodiversity.
