Contents 



Page 



Chapter Summary 37 



Attitudes Toward Wetlands 37 



Intrinsic Values of Wetlands 39 



Wetlands as Natural Areas 39 



Wetlands for Recreation and Education 41 



Other Intrinsic Values 42 



Ecological Services or Resource Values of Wetlands 43 



Floodpeak Reduction 43 



Shoreline Erosion Control 46 



Ground Water Recharge 47 



Water Quality Improvement 48 



Fish and Wildlife Values 52 



Climatic and Atmospheric Functions 60 



Chapter 3 References 61 



TABLES 



Table No. Page 



4. Summary of Input-Output Studies 51 



5. Selected Commercial or Sport Fish and Shellfish UtULzing 



Coastal Marshes as Nurseries 56 



6. Endangered Wetland Species on the Federal 



Endangered and Threatened Species List 57 



7. Game and Fur AnimeJs Identified by State Game Managers as Found in Wetlands ■; . 58 



8. The 10 Most Recreationally Important Marine Fish in the United States 



in 1979 Ranked by Number of Fish Landed 58 



9. The 15 Most Important Fish and Shellfish Harvested by U.S. Fisheries in 1980 59 



10. Wetland Plant Productivity 59 



FIGURES 



Figure No. Page 



4. Relationship Between Wetland Processes and Values 44 



5. General Pattern of Duck Distribution in North America 53 



