1 DR. COOPER: My reason for bringing it up is that they are 



2 concentrated primarily--they appear to be--in these canyon environments. 



3 DR. BUTMAN: We just ran out of space underneath that, so we are 



4 going to end the discussion on this. 



5 DR. BOTHNER: Can I just make one more point about that? 



6 DR. BUTMAN: As long as you don't add something to the list. 



7 DR. BOTHNER: No, I'm not going to add anything to the list, but I 



8 am going to support Dick's column because, in some of our sediment 



9 traps, as you recall, we found shrimp-like creatures that were somewhat 



10 decomposed and, therefore, not easily identified. In addition, we found 



11 absolute layers of fecal pellets. 



12 DR. TEAL: That's where it's from. 



13 DR. BOTHNER: Maybe. 



14 DR. BUTMAN: This is an important list. I didn't mean to cut it 



15 off. Are there any other things that are special about canyons that 



16 make sediment/contaminant accumulation important? 



17 DR. HECKER: My instincts are there is more biomass in the canyons 



18 because the filter feeders are added on top of the background fauna, so 



19 what you've got is--the addition is, I think, you've got higher biomass. 



20 DR. TEAL: The filter feeders are just important because they are 



21 there and they are generally absent from the other slope environments, 



22 are they not? 



23 DR. HECKER: Yes, they are absent from the slope environments to a 



24 large extent, but what I am saying is: Several of the common slope 



25 species are concentrated in canyons, say, Ophiomusium lymani is about 



26 twice as abundant in the canyon axis itself, deeper in the canyon axis 



27 itself, than out on the slope. The deep-sea eel is more common in the 



28 canyon. 



29 The only thing I found that really isn't is the red crab and 



30 there, it is hard for me to tell what the difference is between--they do 



31 red crab fishing on the slope and they don't in the canyon and, 



32 depending on when red crab lines have been along or not, I have problems 



33 with that. 



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