Patuxent River

Jonathan W. Kaufman (5) Naval Air Warfare Center, Patuxent River, Maryland 20670... 

Fish, various species, Maryland, Patuxent River, whole, maximum values, total chlordanes 1978 vs. 1979 190 FW vs. 480 FW 86... 

Nair, P.S. 1990. Chlordane Levels and Geographic Distribution of Chlordane in Fish from the Non-tidal Portion of the Patuxent River. U.S. Fish Wildl. Serv. Publ. AFO-C90-04. 26 pp. 

Watts R, McGuire P. 1992. Emergency Services to Conduct Laboratory Research Concerning Appropriate Additions at NAS Patuxent River Fuel Farm In situ Bioreclamation. Nevada Univ, Reno Dept of Civil Engineering Reno Nevada. 

Tsivoglou Wallace (1972) Q Flint river O South river A Jackson river A Patuxent river Chattahoochee river... 

MZD meena zamedlennago deyst-viya(Rus) (delayed action NATC Naval Air Test Center, Patuxent River, Md... 

Bartell, S.M. (2003) A framework for estimating ecological risks posed by nutrients and trace elements in the Patuxent River, Estuaries 26, 385-397. 

Abbe, G.R., G.F. Riedel, and J.G. Sanders. 2000. Factors that influence the accumulation of copper and cadmium by transplanted eastern oysters (Crassostrea virginica) in the Patuxent River, Maryland. Mar. Environ. Res. 49 377-396. 

Chesapeake Bay Patuxent River Potomac River York River... 

Fortunately, we are beginning to actually detect measurable improvements in the water quality of some estuaries due to scientifically based nutrient reductions and extensive longterm monitoring studies. For example, the Patuxent River in Maryland (USA), a tributary of the Chesapeake Bay, experienced extensive eutrophication from sewage inputs and non-point sources over four decades (1960-2000 D Elia et al., 2003). 

D Elia, C.F., Boynton, W.R., and Sanders, J.G (2003) A watershed perspective on nutrient enrichment, science, and policy in the Patuxent River, Maryland 1960-2000. Estuaries 26, 171-185. 

United States Naval Air Test Center, Patuxant River, Md United States Naval Electronics Laboratory United States National Guard United States Naval Radio-logical Defence Laboratory United Services Organizations Unit Security Officer(Canada) United States Patent... 

Increases in river N export over time often correlate relatively well with increases in N inputs to watersheds. However, the response of river N export to decreases in watershed N inputs is not necessarily as rapid or well understood. In at least one case, the Patuxent River (MD, USA), point source reductions in N resulted in rapid reductions in N export (Boynton et al., 1995 Jordan et al., 2003). However, N export is generally dominated by non-point sources, not point sources (Carpenter et al., 1998 Dumont et al., 2005 Seitzinger et al., 2005b others), so substantially reducing N export often requires a reduction in non-point N inputs. Reductions of non-point nutrient inputs have been attempted in a number of systems, but response of river N export to these reductions is often much slower and less predictable than responses to reductions in point sources (Stalnacke et al., 1999). 

Patuxent River, tidal fresh 70 29 41 PO This study... 

Figure 18.7 Salinity versus concentration plots for NO2 + NO3 during dry, average and wet years in the Patuxent River estuary. Summer and winter values are shown in each panel. Data were from the Chesapeake Bay Water Quality Monitoring Program (2004).

Figure 18.15 Comparative analysis of net ecosystem production for estuaries in relation to loading ratio for DIN TOG Data sources are for MERL mesocosms (Oviatt et al., 1986), for Narragansett Bay (Nixon eta/., 1995), forXomales Bay (Smith andHollibaugh, 1997), for San Francisco Bay (Jassby et al, 1993), for Chesapeake Bay (Kemp et al, 1997), and for Patuxent River estuary in 1985—1994 (Kemp et al, 1999). Figure was adapted from Kemp et al (1997). The DlN TOC load ratio was based on external inputs of DIN (NO3 + NO2 + NH4) andTotal Organic Carbon (TOC) to each site.

Figure 18.18 A scatter plot of predicted versus measured NH4 fluxes for the mesohaline region of the Patuxent River estuary. Data and figure are from Stankelis a/. (1999).

Costanza, R., Voinov, A., Boumans, R., Maxwell, T., ViUa, F., Wainger, L., and Voinov, H. (2002). Integrated ecological economic modeling of the Patuxent River watershed, Maryland. Ecol. Monogr. 12i2), 203—231. 

Testa, J. M., and Kemp, W. M. (2005). Stoichiometry of Biogeochemical Fluxes in the Patuxent River Estuary, USA. Presentation at American Society of Limnology Oceanography, Santiago de Compostela, Spain. 

Patuxent River Estuary, 1.85-2.14 Stoichiometry Jenkins and Kemp... 

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