1 Basically the difference, and I'll show you that right here 



2 What I'm showing you here is trophic strategies, feeding strategies in 



3 the canyon versus the slope. 



4 If you look at the pattern, a typical slope pattern here, you're 



5 dominated by filter feeders and deposit feeders, deposit feeders right 



6 at the base of the slope, a small zone of filter feeders and then you go 



7 up into a carnivore, say the whole middle slope here to upper slope, is 



8 dominated by carnivores. 



9 You're talking about deep-sea eels, you're talking about the red 



10 crab and several rattails. That is sort of the pattern here on the 



11 slope, but when you get into the canyon, look at the high concentration 



12 of filter feeders that carries right up when you've got just and F[words 



13 unclear], you're talking about almost 100 percent filter feeders. 



14 When you've got a C and an F, you're talking about a half-half 



15 mix. So, you can see the high concentrations of filter feeders in the 



16 axis on the flanks here and on the wall, and the same here on the east 



17 wall and the flanks, you've got very high concentrations of filter 



18 feeders. 



19 Additionally, the problem with doing species diversity from the 



20 type of data we have is we have unequal sample sizes, because you're 



21 dealing with photographs and the number of--your diversity increases, 



22 but it doesn't increase linearly with the amount of area you're looking 



23 at. 



24 So, we did just some very simple mathematics of just trying to 



25 calculate the number of animals per 10 m. One thing that we did find 



26 out, there's a higher diversity on hard substrate. 



27 You can see this here, this was on the slope, it was the eastern 



28 part of that slope run. The mean number of species per 10 m there was 



29 1.15. This was the western part of the slope, there were several one- 



30 picture areas that had boulders on them, and the diversity went way up, 



31 right off the graph. 



32 The soft substrate areas here had a mean diversity of 1.65 number 



33 of species per 10 m^. When you got into the canyon, the average 



112 



