Table 150. —Bathymetric occurrence of Thyasira flexuosa , 

 based on 104 samples and 1,044 specimens. 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Percentage of 



Samples 



1.0 



8.6 



30.8 



33.6 



22.1 



2.9 



1.0 



100.0 



Specimens 



0.2 



6.6 



59.2 



16.7 



13.3 



3.9 



0.1 



Table 154. — Bathymetric occurrence of Thyasira p.yqmaea . 

 based on 8 samples and 64 specimens. 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Percentage of 



Samples 



25.0 

 12.5 

 37.5 

 25.0 



Specimens 



28.1 



1.6 



45.3 



25.0 



100.0 



Table 151.— Occurrence of Thyasira flexuosa in bottom 



sediments, based on 104 samples and 1,044 specimens. 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



3.8 



1.0 



2.9 



1.0 



1.0 



27.8 



20.2 



10.6 



31.7 



100.0 



Specimens 



0.4 

 1.0 

 1.3 

 0.6 

 0.1 

 12.1 

 38.3 

 14.7 

 31.5 



100.0 



Table 155. — Occurrence of Thyas i ra pyqmaea in bottom 



sediments, based on 8 samples and 64 specimens. 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



12.5 

 37.5 



50.0 

 100.0 



Specimens 



3.1 

 40.6 



56.3 



100.0 



Table 152.— Bathymetric occurrence of Thyasira flexuosa forma 

 qouldii , based on 37 samples and 415 specimens. 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Percentage of 



Samples 



5.4 

 56.8 

 21.6 



8.1 



8.1 



100.0 



Specimens 



8.9 



54.5 



5.1 



4.3 



27.2 



100.0 



Table 156.— Bathymetric occurrence of Thyasira subovata, 

 based on 7 samples and 18 specimens. 



Percentage of 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Samples 



57.1 



28.6 

 14.3 



Specimens 



50.0 

 5.6 



Table 153.— Occurrence of Thyasira flexuosa forma qouldi i in bottom 

 sediments, based on 37 samples and 415 specimens. 



Bottom type 



Gravel 



Sand- gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



32.5 



37.8 



5.4 



21.6 



100.0 



Specimens 



10.6 



45.3 



9.6 



34.0 



100.0 



Table 157.-- Occurrence of Thyasira subovata in bottom 



sediments, based on 7 samples and 18 specimens. 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



28.6 

 14.3 

 42.8 

 14.3 



100.0 



Specimens 



27.8 



11.1 



55.5 



5.6 



100.0 



150 



