new shellfish reef

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Texas
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Re: new shellfish reef

Postby Texas » Thu Jun 07, 2018 5:37 pm

Sig caught them in Bering sea, 250 miles East of Dutch harbour



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denis barden
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Re: new shellfish reef

Postby denis barden » Thu Jun 07, 2018 5:47 pm

Nude Up
Many thanks Cheers Denis

Redhunter
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Re: new shellfish reef

Postby Redhunter » Thu Jun 07, 2018 7:01 pm

KeenAds wrote:
hornet wrote:Do they just drop the whole crate to the bottom and leave it there or do they empty it from above ?


Pretty sure they did one previously in Corio bay and they were spread over an area off about 300m from memory


Surely they'd throw the crates overboard, as opposed to spreading shells across the sea floor?

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4liters
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Re: new shellfish reef

Postby 4liters » Thu Jun 07, 2018 7:09 pm

Redhunter wrote:
KeenAds wrote:
hornet wrote:Do they just drop the whole crate to the bottom and leave it there or do they empty it from above ?


Pretty sure they did one previously in Corio bay and they were spread over an area off about 300m from memory


Surely they'd throw the crates overboard, as opposed to spreading shells across the sea floor?

One trial is to spread shells over a wide area, this is because the young shellfish need a hard surface to grow on and the shellfish reefs hadn’t been recovering to date because all the rocks and empty shells had been removed or damaged by the scallop dredging. The hope is that the shellfish will establish themselves on the scattered shells and the reef in that area will return.

From what I read about this one in Portarlington they want to use the crates of shells as a barrier to protect the shore from erosion. The aim is not so much to stop the waves dead but to take a bit of the energy out of them. Presumably in the past there were shallow shellfish reefs that did the same thing before they were dredged up.
2015/16 Species comp total: 289cm
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