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More Negative Effects of Inshore Trawling

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    Posted: 23 January 2017 at 1:03pm























If a shrimp trawler was held to the same standard as a bulldozer in Raleigh, do you think they'd be allow to do what is shown in the photos above?



http://www.water.ncsu.edu/watershedss/info/turbid.html


https://deq.nc.gov/about/divisions/w...ater-standards






Dr. Jeff Buckel claims he understands-

"....analyses showed lower fish counts in areas with high levels of human alterations, notes Jeffrey Buckel of North Carolina State University, who serves as the Sea Grant advisor to the fellows."

http://ncseagrant.ncsu.edu/coastwatch/previous-issues/2010-2/spring-2010/coastal-habitat-protection-plan-preserving-critical-ecosystems/

The 2015 CHPP has some mighty lofty goals.  With current management at NCDMF, they'll never reach them.




So when is the NCDMF and the NCMFC going to do their job instead of spending taxpayer dollars writing about it and talking about it?

From Page 10



http://ncdenr.s3.amazonaws.com/s3fs-public/Environmental%20Management%20Commission/EMC%20Meetings/2016/March2016/Attachments/AttachB_16-13CHPP_10Mar16.pdf




Edited by Rick - 23 January 2017 at 2:15pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CapRandy Quote  Post ReplyReply Direct Link To This Post Posted: 23 January 2017 at 1:24pm
Well there you go,even with pictures some people are blind
Murder is killing but all killing is not murder
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Post Options Post Options   Thanks (0) Thanks(0)   Quote chriselk Quote  Post ReplyReply Direct Link To This Post Posted: 23 January 2017 at 5:54pm
The first picture is over a sand bottom, not a mud bottom.
Does not represent the majority of NC estuarine bottom.

The difference between sand particles and mud particles is one of size.
https://en.wikipedia.org/wiki/Grain_size

Because of the smaller particles of mud, they stay suspended much longer.
Also, filter feeders are setup to filter out the similar sized phytoplankton and zooplankton and mud.

That means that mud (silt) kills certain filter feeders, such as oysters.

Turbidity also can have impacts on seagrass, due to reduced sunlight necessary for photosynthesis.  It is illegal to trawl on seagrass, within a short distance.  I can remember arguing while on the shellfish committee that if that distance were larger, would it not help or allow the seagrass to migrate out?  

There is a synergy we are failing to exploit.  Oysters filter out plankton, clearing the water for photosynthesis by seagrass and seagrass keeps the mud down doing the same and preventing siltation of oysters.  Together they help each other survive and to expand. 
The above comments are my personal opinion and do not represent those of any organizations or agencies I may be a member of.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bakesta Quote  Post ReplyReply Direct Link To This Post Posted: 23 January 2017 at 8:27pm
Are there really scientists out there who claim that is actually good for North Carolina's inshore waters?




Hmmmmmmmmm - here's a question for fun.


I'm thinking about applying for a permit to drag the bottom of the sound and stir up silt so that i can make some money. I'll only stir an area that is about 30 by 30 yards once a week.

Do you think it will get approved?

If no ---- why not?????




Would it be approved for one stir a month or even one a year?  I'd bet not.





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Post Options Post Options   Thanks (0) Thanks(0)   Quote cnaff Quote  Post ReplyReply Direct Link To This Post Posted: 24 January 2017 at 4:53am
Thanks for compiling this information, Rick. Thanks for pointing to the synergistic convergence of the facts in favor of an holistic approach to estuarine conservation, Chris. Perhaps we need that menhaden kid on YouTube to bring in a slick presentation for the edification and education of our various legislative players AND our potential allies in the voting public at large.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote todobien Quote  Post ReplyReply Direct Link To This Post Posted: 24 January 2017 at 9:35am
I hear there is a slick you tube of a shrimp plate showing shrimp being removed from the plate due to regulations until there are very few shrimp left. THe way it was described to me it sounds like it could be an effective piece to convince folks they will not longer have shrimp to eat. If anyone has seen it please share the link. Maybe menhaden boy can do one countering it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rick Quote  Post ReplyReply Direct Link To This Post Posted: 24 January 2017 at 9:59am
Originally posted by todobien todobien wrote:

I hear there is a slick you tube of a shrimp plate showing shrimp being removed from the plate due to regulations until there are very few shrimp left. THe way it was described to me it sounds like it could be an effective piece to convince folks they will not longer have shrimp to eat. If anyone has seen it please share the link. Maybe menhaden boy can do one countering it.


Anyone who says that does not understand the issues, is ignorant of economics or simply has an agenda and pushing a lie.





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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray Brown Quote  Post ReplyReply Direct Link To This Post Posted: 24 January 2017 at 10:16am
I have seen that shrimp plate animation. It gives no cites of any science or data to support its assumptions. It simplistically does things like removes 30% from the plate because available days to shrimp are cut, but never considered how many days most boats shrimp now. It just assumed everything is in a straightline effect which any scientist will tell you is not true. It was prepared by a seafood broker.
Some trawl operator will be forced to change in order to reduce bycatch. If you worry about that more than stopping the bycatch then the resource is secondary to you. Recovery has one less advocate.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote HeyAbbott Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2017 at 10:21am
Rick,

Where did the Shrimp Supply Table come from?
BUD - Go Catch & Release One!!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rick Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2017 at 10:35am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bakesta Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2017 at 11:41am
Originally posted by Rick Rick wrote:

Credited to NOAA in this blog-

http://conversableeconomist.blogspot.com/2014/06/sick-shrimp-supply-shock.html


this is the link from the blog that rick provided.  it has the figure that was posted.

http://www.st.nmfs.noaa.gov/Assets/commercial/fus/fus12/07_supply2012.pdf



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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rick Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2017 at 11:49am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rick Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2018 at 9:12am
Originally posted by chriselk chriselk wrote:

The first picture is over a sand bottom, not a mud bottom.
Does not represent the majority of NC estuarine bottom.

The difference between sand particles and mud particles is one of size.
https://en.wikipedia.org/wiki/Grain_size

Because of the smaller particles of mud, they stay suspended much longer.
Also, filter feeders are setup to filter out the similar sized phytoplankton and zooplankton and mud.

That means that mud (silt) kills certain filter feeders, such as oysters.

Turbidity also can have impacts on seagrass, due to reduced sunlight necessary for photosynthesis.  It is illegal to trawl on seagrass, within a short distance.  I can remember arguing while on the shellfish committee that if that distance were larger, would it not help or allow the seagrass to migrate out?  

There is a synergy we are failing to exploit.  Oysters filter out plankton, clearing the water for photosynthesis by seagrass and seagrass keeps the mud down doing the same and preventing siltation of oysters.  Together they help each other survive and to expand. 





With all the talk of oysters...lets bring this back to the top.

Coastal resource managers need to take a holistic approach to sustainable management.







Edited by Rick - 14 February 2018 at 9:43am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CapRandy Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2018 at 7:39pm
Sand or  mud,what does it matter,its still tearing up the bottom
Murder is killing but all killing is not murder
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rick Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2018 at 10:38pm
Cap-
Chris' point is well-taken and very accurate. That pic was taken from a Southern Shrimp Alliance video of how a trawler works. It's a pic from the Gulf. All the other pics are from the Pamlico. You couldn't make that video in the Pamlico over a mud bottom and see a darn thing. Chris gets it, the suspended sediment would be one big engulfing cloud.
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