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Post by dutyfree on Aug 27, 2023 12:06:33 GMT 12
was anchored down the western end of Onetangi yesterday, Thompsons Point and was visited by the Iwi? seaweed survey group. Mainly to tell us there was 50ha of the weed in that area. I read the Iwi have instituted the old rahui.
Checked our anchor when we left, nothing on it. They did not ask us to move just let us know.
Interestingly there was about 6 to 8 of them in a reasonable sized runabout, no lifejackets to be seen
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Post by harrytom on Aug 27, 2023 13:35:33 GMT 12
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Post by dutyfree on Aug 27, 2023 13:38:10 GMT 12
They told us it was going to be suctioned up. I doubt it.
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Post by harrytom on Aug 27, 2023 14:52:56 GMT 12
They told us it was going to be suctioned up. I doubt it. When I mentioned it,over there,was told too much stuff would escape and get in the water coloum and start over again. I cant see why it would.
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Post by ComfortZone on Aug 27, 2023 17:39:37 GMT 12
They told us it was going to be suctioned up. I doubt it. When I mentioned it,over there,was told too much stuff would escape and get in the water coloum and start over again. I cant see why it would. The problem with suctioning is they have to discharge the water and some of the algae will get past whatever filters they use.
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Post by DuckMaster on Aug 27, 2023 17:59:11 GMT 12
When I mentioned it,over there,was told too much stuff would escape and get in the water coloum and start over again. I cant see why it would. The problem with suctioning is they have to discharge the water and some of the algae will get past whatever filters they use. Yep. It will propogate from a piece smaller than a grain of sand. So any filtering material fine enough is going to be blocked with sand and useless. They would need to park the biggest tanker there, fill the oil tanker with the ocean bed and then ship it out to the middle of the ocean.
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Post by harrytom on Aug 27, 2023 18:00:25 GMT 12
When I mentioned it,over there,was told too much stuff would escape and get in the water coloum and start over again. I cant see why it would. The problem with suctioning is they have to discharge the water and some of the algae will get past whatever filters they use. Better to try than not at all
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Post by fish on Aug 27, 2023 21:35:09 GMT 12
The problem with suctioning is they have to discharge the water and some of the algae will get past whatever filters they use. Yep. It will propogate from a piece smaller than a grain of sand. So any filtering material fine enough is going to be blocked with sand and useless. They would need to park the biggest tanker there, fill the oil tanker with the ocean bed and then ship it out to the middle of the ocean. Thats how it got here in the first place.
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Post by harrytom on Sept 13, 2023 5:13:05 GMT 12
Last Thursday Niwa/mpi had divers working the wharves by the ferry terminal. Checking on samples of seaweed and mussels which have been purposely placed on ropes off the piles. Got talking to one of the scientist and surprise.The mussels are dead due to pollution. Then went on to ask whats happening with the culpral weed??
Dredging wont work I was told as it will disturb and spread it .Apparently best bet wait and see if water temps will affect it.
They are going up the Bay of islands shortly to do more fanworm removal.With recent rain the top 10m has became fanworm free,they have checked a few vessels/mooring etc Northland wants it eradicated.
Didnt see on piles at Waitangi/Paihia or pontoons at Russel wharf.
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Post by dutyfree on Sept 13, 2023 7:30:24 GMT 12
Fan worm has died off a bit in westhaven too. But still see a bit around.
The weed lives in the med right? What temp are they expecting it to get killed at??
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Post by harrytom on Sept 13, 2023 7:33:17 GMT 12
Fan worm has died off a bit in westhaven too. But still see a bit around. The weed lives in the med right? What temp are they expecting it to get killed at?? I have no idea but they didnt seem overly concerned about it,did ask about the mussels layed in Okahu bay and they seem to be ok,fanworm seemed to be a priority.NRC priority.
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Post by fish on Sept 14, 2023 13:46:56 GMT 12
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Post by harrytom on Sept 30, 2023 4:21:50 GMT 12
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Post by fish on Sept 30, 2023 10:07:13 GMT 12
Lets hope it works. I'm sure the 10t dumped on the rural property near Tryphena is going to make absolutely amaz-balls compost.
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Post by em on Sept 30, 2023 13:52:13 GMT 12
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