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Post by fish on Sept 25, 2022 20:47:52 GMT 12
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Post by fish on May 9, 2023 13:05:30 GMT 12
Article from NOAA in the US about how they eradicated the carpet weed caulerpa in California. Cover it with a tarp, then pump it full of chlorine. Probably some cultural reason we can't do that here... Eradication Implementation Containment All identified Caulerpa patches were covered with impermeable 35mil PVC liners. The containment devices trap adequate volume of water for treatment with chemical herbicides, while protecting surrounding areas from collateral damage. This approach also prevents fragmentation of dying plants from spreading viable fragments to adjacent areas. Chemical Control Treatment Caulerpa patches covered with impermeable PVC lines were originally treated with injections of 5% liquid chlorine solution. Contained patches were retreated with chlorine until some residual chlorine was detected within the tarped area for a period of 24 hours. That initial methodology was modified to treat contained patches with a solid form of chlorine. www.fisheries.noaa.gov/west-coast/habitat-conservation/caulerpa-species-west-coast
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Post by em on May 10, 2023 14:33:21 GMT 12
We could do it here . I’m sure barrier Iwi would be onboard but getting approval from central or local Govt could take too long . I’ve posted links on the other forum , it’s crossroads moment with the hardstands under pressure from lego men and pests proliferating on the seafloor .
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Post by Cantab on May 29, 2023 18:23:11 GMT 12
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Post by em on May 29, 2023 18:39:13 GMT 12
Fuck that pisses me off . Mr Crawford is right on the money though saying management is not an option , it needs to be eradicated at all costs .
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Post by harrytom on May 29, 2023 18:39:49 GMT 12
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Post by Cantab on May 29, 2023 19:01:47 GMT 12
Sort of hard to believe it isn't around Auckland too.
Looking everywhere for Fan worm, missed the big one.
I reckon importing whatever eats it is the only realistic way to get rid of it, or at least control it.
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Post by harrytom on May 29, 2023 19:07:28 GMT 12
Sort of hard to believe it isn't around Auckland too. Looking everywhere for Fan worm, missed the big one. I reckon importing whatever eats it is the only realistic way to get rid of it, or at least control it. nothing eats it,very toxic to fish
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Post by fish on May 29, 2023 19:16:37 GMT 12
That article says 1100 boaties a year come from Auckland to the BoI, via Great Barrier.
I've never heard of anyone going to the BoI via Barrier. I know of loads that go to the Barrier, or to the BoI, but never both. Why would you? It is just the out and out "blame the boaties", when there is no real indication that is the vector. That, and if we can't anchor at the Barrier, how could we pick it up to move it? Or do the controls not work?
Not surprised it is all around the place. You know, ocean currents and all. Major issue now. Given the number of sites already identified, I can't see how they can eradicate it. They don't have an effective method, and it has only ever worked on very, very small areas, like 1 to 2 m2 areas. But if they are going to give it a go, they need to move a damn site faster than MPI has ever moved, ever before. It's taken 3 weeks to walk a few beaches...
Imagine if they ban anchoring and fishing in the BoI? Barrier will be rammed next year for sure, but there would be a measurable economic impact of that. Not to mention the difficulty in policing, and the backlash, both for those wanting to use their boats, and those wanting a complete ban on everything.
What a clusterfuck. We can only hope it goes like fan-worm, and isn't as bad as feared.
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Post by Cantab on May 29, 2023 19:20:06 GMT 12
The technical advisory group which was formed to give independent advice to the Governance Group has stated that eradication is not technically possible. This advice did not consider the financial cost of eradication. This is not a question of funding, but rather feasibility. Eradication is not currently possible with the treatment tools available. www.mpi.govt.nz/dmsdocument/51427/direct
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Post by em on May 29, 2023 19:47:08 GMT 12
The technical advisory group which was formed to give independent advice to the Governance Group has stated that eradication is not technically possible. This advice did not consider the financial cost of eradication. This is not a question of funding, but rather feasibility. Eradication is not currently possible with the treatment tools available. www.mpi.govt.nz/dmsdocument/51427/directRight , so they are just going to let it rip .
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Post by Cantab on May 29, 2023 20:26:02 GMT 12
Nah, they will just ban all anchoring in the Bay of Islands, East Coast and the Gulf.
Governments never take advice, they know better and that pays more.
They got the same advice for fanworm, look where that went.
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Post by em on May 29, 2023 20:31:22 GMT 12
Still letting it rip though , just not letting boaties rip
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Post by Cantab on May 29, 2023 21:03:59 GMT 12
They sort of let it rip already
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Post by chariot on May 30, 2023 10:09:51 GMT 12
Talked to a Doc guy a few months ago diving in the Whitianga marina checking to see if it had arrived in here from Great Merc. I asked him if anyone had considered that it may have travelled from the Barrier to the Mercs via currents and his response was that it was possible but not certain. So I guess they choose not to acknowledge that water movement possibility.
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