distribution over multiple annual cycles and the development of spatially explicit models to 
examine seagrass bed dynamics (e.g., expansion). Skills and knowledge represented by these 
research projects will be integrated across Divisions and will provide the basis for comparison 
and testing of approaches outlined above across the nation’s SAV communities. Again, to be 
most useful to OW, SAV coverage and the loading response relationships should be based on 
historical information to the maximum extent possible since water quality management is 
frequently based on returning to some historical reference condition (realizing that such data is 
often not available). 
Products 
APM 1A FY02 (GPRA # 163) Generalized seagrass/rhizosphere model capable of predicting 
effects of reduced light, sedimentation, nutrient depletion, and toxic effects of sulfides (WED). 
APM IB FY02 (GPRA # 164) Effects on estuarine submerged aquatic vegetation from changes 
in light quantity and quality due to increased levels of suspended solids (GED). 
APM 5A FY02 Report on structural and functional characteristics of SAV rhizospheric 
communities (GED). 
APM 5B FY03 Correlation of water quality with SAV change (GED). 
APM 5C FY04 Report on environmental requirements of three main species of seagrasses 
(WED). 
APM 5D FY04 Development of stress-response model fox Zostera marina in Pacific Northwest 
and validation of stress-response model for Thalassia testudinum (WED). 
APM 5E FY04 Development of empirical load-response models for Zostera marina in NE U.S. 
(AED). 
APM 5F FY05 Development of load-response models for estuaries of Pacific Northwest and 
Gulf Coast, and validation of stress-response model for Zostera marina in NE U.S. (WED, 
GED, AED). 
APM 5G FY05 Propose classification scheme for predicting sensitivity of coastal receiving 
waters to the effects of nutrients on SAV (WED, GED, AED). 
APM 5H FY06 Report on the empirical and numeric models for SAV (WED, GED, AED). 
APM 51 FY07 Report on a classification scheme for grouping coastal receiving waters based on 
sensitivity to nutrients.(WED, GED, AED). 
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