On 8th September 2016 – whilst much of the marine industry was enjoying German hospitality at SMM in Hamburg, Finland was busy depositing its ratification of the ballast water management (BWM) convention with the IMO in London, bringing a convention 12 years in the making over the line.
This weeks article looks at the blue-green algae known as cyanobacteria. Cyanobacteriea is a type of photosynthetic bacteria which can be found in almost every terrestrial and aquatic habitat on earth. Though not an invasive species strictly speaking, they can be considered a particularly troublesome side effect of other invasive species.
In a further twist to what is a hot topic in ballast water treatment – MPN vs CMFDA test methods for ballast water management systems – the Canadian government has confirmed its backing of the MPN method…
Peru has finally acceded to the IMO Ballast Water Convention, making them the 51st state to do so. Their accession coincided with the IMO’s end of May global tonnage figures, which also indicated a slight increase in the ratification percentage from the end of April figures.
This weeks invader is the Fishhook Water flea.
On 26th May 2016, St Lucia became the 50th state to ratify the IMO Ballast Water Convention. St Lucia’s representative tonnage figure was too small to impact the ratification percentage which still sits at 34.81%. The required tonnage percentage for ratification is 35%.
With the number of ballast water treatment systems on the market ever on the increase, one would think that it would be fairly straightforward to find one that is suitable. Sadly though, choosing the right BWTS for a vessel is a task that couldn’t be further from ‘straightforward.’ The list of factors to weigh up before making a decision is enough to leave even the most experienced in the industry with a headache. We hope that you find this short list of do’s and don’ts helpful. Don’t: 1. Pick a system based on price alone. The price may make some …
This weeks aquatic hitch hiker is native to the Western Pacific and Eastern Indian Ocean however, since their initial discovery in the waters of California in 1981, swarms of this species can now be found worldwide. They start out in life as tiny polyps, and can grow to be over 20 inches and weigh up to 11 kilograms. It’s thought that the polyps are transported around the globe in ships ballast water.
Despite not being deadly to humans, the Australian spotted jellyfish causes plenty of damage wherever it goes walkabout……
This week’s invader of the week is the Quagga Mussel
The Quagga Mussel (Dreissena Rostriformis Bugensis) is a species of mussel native to the Black and Caspian seas, thought to have been transported to Western Europe and North America through ships’ ballast water. Whilst not posing a direct predatory threat to local species, the Quagga Mussel does significantly disrupt the local aquatic lifecylce due to its prodigious filtering of the local water of important phytoplankton and suspended particulates, with each mussel capable of filtering up to one litre of water per day. The Quagga Mussel’s tenacious breeding abilities make it a significant economic threat to industrial and civil areas.
This week’s invader of the week is the Killer Shrimp.
The Killer Shrimp (Dikerogammarus Villosus) is actually an amphipod, rather than a shrimp, but earns its reputation from its aggressive and vicious behaviour. Native to the Black and Caspian seas, it is thought to have been transported to Western Europe and, most recently, the United Kingdom via the ballast water and hulls of ships.
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