Depth (m) Temperature (°C) 



20 40 60 80 100 200>200 6 7 8 9 10 II 12 13 



Median 

 Sediment Size <J) 



12 3 4 5 



%Silt-Clay 

 20 40 60 80 100 



Porifera 



Coelenterata 



Nemertea 



Annelida 

 Pogonophora 



Sipunculida 



Mollusca 

 Gastropoda 

 Pelecypoda 

 Scaphapoda 



Crustacea 



Cumacea 



Isopoda 



Amphipoda 



Decapoda 

 Echinodermata 

 Holothuroidea 

 Echinoidea 

 Ophiuroidea 

 Asteroidea 



Ectoprocta 

 Enteropneusta 



Ascidiacea 



Miscellaneous 

 Total 



1 



1 , 



<l 

 2 



"IT" 



43 



25 19 

 1 3 



<l 



41 



2 



1 1 



26 



3 



53 



25 25 36 

 3 5 



27 20 31 38 48 

 4 5 



19 



2 



29 23 



13 12 28 

 29 43 46 23 



20 15 16 

 30 40 25 28 38 



13 

 25 29 



15 12 

 31 22 



14 

 32 



12 12 

 25 



12 

 21 22 



728 721 793 456 359 618 

 <l 

 44 

 3 4 7 



698 771 697 471 516 630 

 < 1 

 4 



2 4 



610 658 



2 



183 



717 498 

 <l <l 

 10 



3 

 23 39 

 241 



737 515 516 402 375 



<l <l 

 10 



3 



18 25 98 

 204 223247 



20 19 31 32 

 187 252 122156 



260 



21 



50 



70 



162 221 432 146 

 30 



177 208 251 277 

 41 



18 



261 230 236 



13 



230 221 



200 362 



44 28 65 



204 221 217 



42 22 62 

 187 210 122 155 



165 



36 55 33 

 240 



247 



56 

 49 



21 91 



118 192 367 137 

 <l 



134 186 236 214 



<l 

 13 12 



225 175 200 



3 



13 



<l 



1 



15 



216 163 



176 271 



6 



12 19 14 



6 



13 15 13 12 



II 



3 



2084 1807 



2166 3957 

 <l 



2127 2244 

 3175 2728 

 <l <l 



2745 



2382 



2207 

 <l 



3203 1088 

 <l 



90 71 



1 1 



44 54 96 

 <l 1 



47 

 1 



61 



64 

 1 



26 





45 34 



9 18 12 



18 21 25 38 21 



12 14 10 10 



40 

 12 10 



25 



12 



33 



13 



10 





1941 J784 

 2059 3907 

 2 



2063 2182 

 3097 2601 

 3 



2680 23I6 



2117 

 <l 



3101 



<l 



4 



1059 





7 5 



35 157 72 



5 6 5 

 63 86 



3 3 



35 



86 79 64 



101 93 



4 

 77 77 



45 51 641 439 



28 28 121 

 25 

 8 33 



228 435 332410 223 

 56 41 18 



164 



196 323 503 

 56 56 



353 196 338 514 



56 71 61 



13 24 13 17 



9 46 



25 



18 31 

 17 II 



9 



28 

 23 



26 18 

 9 



157 

 15 22 



24 40 52 

 24 32 



73 104 



28 35 17 



32 



158 

 17 17 

 159 287 328 

 5 5 7 





32 



19 



563 375 



12 



129 314 314 394 212 

 5 4 



<l 



319 



8 

 6 



310 356 

 12 

 8 



1 



6 4 



8 



5 9 



8 



3 

 6 



5 8 

 <l 



220 



<l <l 



244 16 

 <l 

 4 

 8 30 



3 





4 4 5 

 10 5 



II 



3 4 



9 



4 





6 



9 



106 52 32 36 

 25 31 



51 447 

 20 57 55 



112 55 



18 



50 14 



50 



50 



44 



48 

 14 13 



354 103 107 108 157 

 276 323 354214 



325 104 516 

 300 372 258 



142 Ii5 93 116 

 252 378 151 



103 

 336 



99 



197 160 



153 



3223 _5I2C) „ 

 3130 3442 



3145 3891 , 2114 

 4464 3483 



3606 34403440 



4247 2286 



1763 



Figure 6. — Summary of average biomass (g/m ! ) and number of individuals (no./m 1 ) of major laxa in relation lo depth, temperature, median sediment size, and silt-clay, 

 off Martha's Vineyard, Mass., from samples collected June 1962. Biomass above line; number below line. 



