Wiersema, J.M. ; Mitchell, R.P. A sur- 

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DISCUSSION 



Question : A question directed 

 to Joan Browder: If you would, share 

 some of your plans perhaps for con- 

 tinuing your research. 



Answer : We were thinking that 

 the study could have five data- 

 gathering elements; one would be the 

 monitoring of freshwater flow rates. 

 Two would be measuring of vertical 

 profiles of salinity, temperature, 

 oxygen, and current direction and 

 velocities. Three would be the 

 measures of the detrital biomass 



and detritus decomposition rates. 

 Four would be the mapping of the iso- 

 halines and the quantification of 

 the area between isohalines periodi- 

 cally during the nursery season. This 

 is where we would utilize the remote 

 sensing techniques in combination 

 with some field measurements. Five 

 would be mapping and quantif icaton 

 of potentially productive habitat 

 areas based on physical and biologi- 

 cal features at different levels of 

 high tide. This is measuring the 

 stationary habitat features, the 

 areal stationary habitat that we 

 consider to be important to differ- 

 ent estuarine organisms. And then 

 the monitoring of fishery yield and 

 effort would be number six. In 

 addition, of course, we should not 

 neglect to measure the input rates 

 of the detritus, the nutrients, and 

 sediments and toxic compounds because 

 we need to keep tabs on these too. 

 Now, some of the potential relation- 

 ships that should be explored through 

 both statistical analysis and com- 

 puter modeling once we begin to 

 gather this data are production area, 

 which we have defined as the area of 

 overlap of the favorable salinity 

 band and the favorable stationary 

 physical and biological habitat 

 features. Look at that versus fresh- 

 water flow during the nursery season. 

 Look at stratification versus fresh- 

 water flow, look at production areas 

 versus stratification, look at fish- 

 ery production versus production 

 area, and look at fishery production 

 versus the area of marsh. Look at 

 detrital decomposition versus strati- 

 fication or degree of stratification. 

 And look at recruitment into the 

 estuary versus the currents that 

 occur during critical periods of post 

 larval transport. And then look at 

 fishery production versus water 

 quality. 



430 



