Comparison of mid-bay and lateral station water quality data in the Chesapeake Bay mainstem: Chesapeake Bay program
Technical Report
·
OSTI ID:6206167
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.
- Research Organization:
- Environmental Protection Agency, Annapolis, MD (United States). Chesapeake Bay Program
- OSTI ID:
- 6206167
- Report Number(s):
- PB-93-208288/XAB; CBP/TRS--74/93
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540350* -- Environment
Aquatic-- Site Resource & Use Studies-- (1990-)
AQUATIC ECOSYSTEMS
ATLANTIC OCEAN
BAYS
CARBOXYLIC ACIDS
CHESAPEAKE BAY
CHLOROPHYLL
COASTAL WATERS
DATA
DEPTH
DIAGRAMS
DIMENSIONS
DISSOLVED GASES
ECOSYSTEMS
ELEMENTS
ENVIRONMENTAL QUALITY
FLUIDS
GASES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
MAPS
MATHEMATICS
MONITORING
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN
PHOSPHORUS
PHYTOCHROMES
PIGMENTS
POLLUTION
PORPHYRINS
PROBABILISTIC ESTIMATION
PROTEINS
SALINITY
SAMPLING
SEAS
SEASONAL VARIATIONS
SOLIDS
SOLUTES
STATISTICAL DATA
STATISTICS
SURFACE WATERS
VARIATIONS
WATER POLLUTION
WATER QUALITY
540350* -- Environment
Aquatic-- Site Resource & Use Studies-- (1990-)
AQUATIC ECOSYSTEMS
ATLANTIC OCEAN
BAYS
CARBOXYLIC ACIDS
CHESAPEAKE BAY
CHLOROPHYLL
COASTAL WATERS
DATA
DEPTH
DIAGRAMS
DIMENSIONS
DISSOLVED GASES
ECOSYSTEMS
ELEMENTS
ENVIRONMENTAL QUALITY
FLUIDS
GASES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
MAPS
MATHEMATICS
MONITORING
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN
PHOSPHORUS
PHYTOCHROMES
PIGMENTS
POLLUTION
PORPHYRINS
PROBABILISTIC ESTIMATION
PROTEINS
SALINITY
SAMPLING
SEAS
SEASONAL VARIATIONS
SOLIDS
SOLUTES
STATISTICAL DATA
STATISTICS
SURFACE WATERS
VARIATIONS
WATER POLLUTION
WATER QUALITY