This above shallow water has given me some nice sized barramundis.
One of them as follows,
73cm barramundi on REBEL POP-R from my data base.
But it is thought that many barramundis still remain in the region of Darwin city, but the population has been slightly on the decline.
There are many factors.
Not enough amount of rainfall in the wet season
Decrease of broad-leaf tree forests (Mangroves)
Increase of coast roads
Angling and fishing pressure
Hiro
and so on.
A familiar big reason: Decrease of the fulvic acid iron
I found an interesting article as follows,
Experiment on use of Iron/Steel Slag to Restore Marine Environment Begins
Kobe Steel Ltd., and its subsidiary companies started a research experiment in July 2009 to verify the effectiveness of a new type of seaweed/fish bed that combines a normal fish bed with iron/steel slag, a by-product of steel manufacturing. The bed was installed in the ocean near Nishijima in the Ieshima archipelago, near Himeji, Hyogo Prefecture. The purpose of the experiment is to improve the environment for fish and seaweed production. The experiment will continue for three years, ending in June 2012.
A small fish bed measuring 4.4 m × 3.0 m × 2.0 m, and a large fish bed measuring 8.3 m × 8.3 m × 5 m were installed on the seabed at a depth of five to eight meters, and the experiment is showing satisfactory progress, with seaweed steadily growing and fish swimming near the steel bed.
After iron/steel slag was verified to be effective for restoring marine environments, the Hyogo prefectural government established a research group to investigate the effective use of iron/steel slag in 2008 in order to preserve and restore the both the land and ocean environments. The research group is part of the Hyogo Ecotown Promotion Conference, which was established to promote, research and diffuse the idea of a recycling-based society, through the joint cooperation of industry, government and academia. Through experiments on the ocean utilizing iron/steel slag produced in Hyogo Prefecture, the prefectural government aims to establish a model for improving the environment.
New Technology Helps Restore Barren Seafloors (Related JFS article)
http://www.japanfs.org/en/pages/026169.html
Kobe Steel Ltd. official website
http://www.kobelco.co.jp/english/
Kansai International Airport used much quantity of iron / steel for the foundation of a building.
As a result, there is better and greater marine environment with a new seaweed/fish bed there now.
Kansai International Airport
From Wikipedia, the free encyclopedia
An artificial island, 4 km (2.5 mi) long and 2.5 km (1.6 mi) wide, was proposed. Engineers needed to overcome the extremely high risks of earthquakes and typhoons (with storm surges of up to 3 m (10 ft)).
From Wikipedia, the free encyclopedia
Please click on the " Fishing of Ranking" link.
Thank you very much.
