![]() However, field measurements did not show any evidence of SRP release at RSCs. Lab mesocosms showed an increase in the release of soluble reactive phosphorus (SRP) with increasing organic C quantity and quality. Mesocosm experiments showed that NO 3 - retention varies with organic C quantity and quality depending on incubating temperature retention of total N did not increase with organic C due to release of other N species (e.g., organic N). At another RSC site with lower NO 3 - concentrations, N retention and DOC release were not apparent. At one RSC, with high nitrate (NO 3 -) inputs, retention of N (16-37%) and release of DOC (18-54%) were observed with the highest retention of N during summer, and the rates of N retention and DOC release were larger than that of the adjacent unrestored tributary (N: 5-8%, DOC: <18%). Results showed that RSCs consistently had lower dissolved oxygen saturation (DO%) and pH relative to nearby unrestored streams, probably due to release of labile dissolved organic carbon (DOC). ![]() This study examined effects of organic carbon (C) quantity and quality on stream water quality and nutrient retention at two RSCs near Annapolis, Maryland, USA by comparing longitudinal changes in water quality at paired restored and unrestored stream reaches, and conducting lab experiments simulating RSC processes. Regenerative stormwater conveyance (RSC), a relatively new stormwater management approach, is extensively implemented throughout the mid-Atlantic for nutrient control, but little is known of its pollutant reduction capabilities and controlling factors. ![]()
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