Vegetation Removal - complete 



Vegetation Removal - specific layers or parts of plants 



Vegetation Removal - only selected species 



Consumer Removal - complete 



Consumer Removal - selected species 



Dissolved Inorganic Materials (non-toxic concentrations) 



Colloidal Inorganic Materials 



Particulate (settleable) Inorganic Materials 



Dissolved Organic Materials (non-toxic concentrations) 



Iinnlsclble Organic Solutions 



Toxic Materials 



Water 



Particulate Inorganic Materials (with any adsorbed molecules) 



Particulate Organic Materials 



Toxic Materials 



Slope (broad expanse) 



Relief (microtopographlc features) 



Elevation (relative to surrounding area) 



Texture/structure (soil) 



Water Infiltration Rate 



Soil Depth 



Soil Moisture 



Water Column Depth 



Benthic Sediment Texture 



Aerobic (anaerobic) Sediment Layer Thickness 



Slope (stream grade, bottom morphology) 



Relief (microtopographlc features) 



O O -I o 

 3 C fD O 



O fD r-t- 



3 in 0/ Q. 



O f+ rt- -•■ 



r+ in (B -1 



3- 3 -1 (t> 



(D ■>»-'• O 



•^ o — * — ' 



3 -h 

 -I o 



O -I 



-h Q.-0 



Kinetic Energy to Water 

 Heat Energy to Water 

 Heat Energy to Soil 



Rate of Flow 

 Duration of Flow 

 Frequency of Flow 

 Direction of Flow 



Rate of Flow 

 Duration of Flow 

 Frequency of Flow 

 Direction of Flow 



at oi 

 CL n 



L/) (/) o> at 



O <-f T c+ 



c c -^ n> 



-1 Q» 3 -1 



n ~t n 



Figure 6-1. Potential primary ecological alterations resulting from 

 petroleum development activities. 



145 



