1 DR. TEAL: Have there been any experiments where you put in some 



2 defaunated sediment not in a tray and then just come back and sampled it 



3 with a corer or something, so that there is no artificial barrier? 



4 DR. MACIOLEK: I don't recall any. You might want to ask Fred 



5 that when he's here tomorrow. I know in some shallow-water locations 



6 Whitlatch [phonetic] put out some sediment cores that I think he sort of 



7 sunk into the--I don't want to say ocean bottom because he was in 



8 shallow water. 



9 DR. HECKER: Craig Smith has been doing something putting mounds 



10 down, but none of that work is done yet. 



11 DR. MACIOLEK: The mounds in themselves are an artificial sort of 



12 structure, too. If you want to talk hydrodynamics, talk to Cheryl Ann. 



13 DR. KRAEUTER: Don Bosh [phonetic] and I tried to do some of this 



14 on the shelf in the mid-Atlantic and one of the big problems, I'm just 



15 struck by your comment about the fish parasites, is you're making an 

 15 artificial reef when you put a structure down there. 



17 It's very difficult to figure out if whether what you're seeing is 



18 the effect of just fish moving around over the sediments and things are 



19 a disturbance or other things. 



20 I can still remember going down, I think it was with Brad Butman, 



21 looking at his current meters on a dive many, many years ago and 



22 watching the current meters going around with fish sitting in the 



23 Savonius rotor parts. That's the kind of thing that happens out there. 



24 They make me ^ery leery of trying to do this kind of 



25 recolonization thing. Whenever you put anything out there, that 



26 happens. I don't know what that does, I don't know how we get around 



27 it. 



28 I think John's suggestion of just putting sediment out there and 



29 then trying to find it again may be a good one, because you might get 



30 very different rates. 



31 DR. BUTMAN: If I could make one comment on the trap design. The 



32 idea of making that long, thin lip was so that the boundary layer 



33 structure does not change as it goes over this. So, at least you don't 



34 have big eddies being shed over the traps. You're right, you probably 



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