Record Display for the EPA National Library Catalog
RECORD NUMBER: 92 OF 538Main Title | Comparison of Mid-Bay and lateral station water quality data in the Chesapeake Bay Mainstem : Chespaeake Bay Program. | |||||||||||||||||||||
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CORP Author | Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program. | |||||||||||||||||||||
Publisher | Printed by the U.S. Environmental Protection Agency for the Chesapeake Bay Program, | |||||||||||||||||||||
Year Published | 1993 | |||||||||||||||||||||
Report Number | CBP/TRS 74/93 | |||||||||||||||||||||
Stock Number | PB93-208288 | |||||||||||||||||||||
OCLC Number | 31061619 | |||||||||||||||||||||
Subjects | Water quality monitoring stations--Chesapeake Bay (Md and Va) ; Chesapeake Bay (Md and Va) | |||||||||||||||||||||
Additional Subjects | Statistical tests ; Water quality data ; Chesapeake Bay ; Water pollution sampling ; Comparison ; Median(Statistics) ; Seasonal variations ; Periodic variations ; Nitrogen ; Phosphorus ; Inorganic nitrogen compounds ; Salinity ; Chlorophylls ; Depth ; Dissolved oxygen ; Correlation ; Differences ; Aquatic plants ; Graphs(Charts) ; Maps ; Total suspended solids | |||||||||||||||||||||
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Collation | xiv, 81 p. : ill. ; 28 cm. | |||||||||||||||||||||
Abstract | Seasonal median water quality values were compared between stations in mid-Bay and lateral regions in seven east-west transects in the mainstem Chesapeake Bay. Comparisons were made over seven years, 1985-1991, for April-October surface layer medians of total phosphorus, total nitrogen, dissolved orthophosphate, dissolved inorganic nitrogen, total suspended solids, chlorophyll a, Secchi depth, and salinity. Comparisons were also made using spring (March-May) and summer (June-September) medians of surface and bottom salinity and dissolved oxygen. Comparisons were made using difference plots of raw data, scatter plots of annual seasonal medians, and the Wilcoxon matched-pairs test on annual seasonal medians. The graphical and statistical analyses confirmed each other. Correlation coefficients were also calculated between mid-Bay and lateral data series to estimate their degree of similarity over time, but could not be tested for statistical significance. |
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Notes | "June 1993." |