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Smithsonian Digital Repository >
Browsing by Author Simpson, Robert L.
Showing results 6 to 13 of 13
| Issue Date | Title | Author(s) | | 1982 | Germination and dormancy studies of Pontederia cordata L | Whigham, Dennis F.; Simpson, Robert L. |
| 1977 | Growth, mortality, and biomass partitioning in freshwater tidal wetland populations of wild rice (Zizania aquatica var aquatica) | Whigham, Dennis F.; Simpson, Robert L. |
| 1979 | Mid-summer insect communities of freshwater tidal wetland macrophytes | Simpson, Robert L.; Whigham, Dennis F.; Brannigan, K. |
| 1978 | Nutrient movement in freshwater tidal wetlands with special reference to Delaware River wetlands | Simpson, Robert L.; Whigham, Dennis F.; Walker, R.; Good, Ralph E.; Whigham, Dennis F.; Simpson, Robert L. |
| 1988 | Plants of the Hamilton Marshes: A Delaware River freshwater tidal wetland | Leck, Mary A.; Simpson, Robert L.; Whigham, Dennis F.; Leck, Charles F. |
| 1976 | The potential use of tidal marshes in the managementof water quality in the Delaware River | Whigham, Dennis F.; Simpson, Robert L.; Tourbier, J.; Pierson, R., Jr. |
| 1978 | Relationship between aboveground and belowground biomass of freshwater tidal wetland macrophytes | Whigham, Dennis F.; Simpson, Robert L. |
| 1976 | Sewage spray irrigation in a Delaware River freshwater tidal marsh | Whigham, Dennis F.; Simpson, Robert L.; Tilton, D.; Kadlec, J.; Richardson, C. J. |
Showing results 6 to 13 of 13
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