Media Library | Integration and Application Network

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Degraded water quality

Saltwater intrusion

Light availability

Nocomis leptocephalus (Bluehead Chub)

For stable isotope analysis, small subsamples of homogenously ground oyster tissues in the scintillation vial are placed in the tin capsule, held by the forceps. — Ground oyster tissue and tin capsule

Sediment slurries in 125 mL Erlenmeyer flasks capped with rubber stoppers to prevent gas exchange for indirect measurements of denitrification using acetylene inhibition techniques — Sediment slurries

Water samples from the Patuxent River are prepared for analysis on board the R/V Aquarius — Water sample preparation

A sediment core has been collected and is being prepared for storage and analysis by carefully filling the core with water from the sample site to minimize disturbance. — Sediment core preparation

Water samples from the Patuxent River are collected and prepared for analysis on board the R/V Aquarius — Water sample analysis

A YSI meter is used to measure temperature, salinity, dissolved oxygen, and conductivity in Monie Bay, a component of Chesapeake Bay National Estuarine Research Reserve — Measuring water quality

A sediment slurry was mixed and the flask capped to trap gases formed as intermediary steps of denitrification. — Sediment slurry

Water quality monitoring fieldwork in Maryland's Coastal Bays. — Fieldwork in Maryland's Coastal Bays

Sediment slurries in triplicate were mixed and flasks were capped to trap gases released during denitrification — Sediment slurries

Monitoring water quality with a YSI 85 instrument in Monie Creek, part of the Chesapeake Bay National Estuarine Research Reserve. Buoys marking oyster biological indicators can be seen in the background. — Monitoring water quality

Conceptual diagram illustrating how the ecological indicators in a program will affect resources, data management, etc. — Ecological indicators in environmental management

Conceptual diagram illustrating how changes in water quality affect different zones of a waterway. — How water quality influences different zones in a…

Conceptual diagram illustrating how spatial analysis combines a diversity of data sets into a map, overlay, analysis, and other decision tools. — Spatial analysis

Conceptual diagram illustrating the 'wedding cake' design for ecological indicators. Used by the National Park Service, this is how indicators are used to make decisions on a national, regional, and local level. — The 'wedding cake' design

An autoanalyzer setup to measure isotope ratios in dissolved gases in water samples. — Autoanalyzer

Isotope ratio mass spectrometer equipment to analyze dissolved gases in water samples — Isotope ratio mass spectrometer

An old mass spectrometer for analyzing stable isotopes — Isotope ratio mass spectrometer

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