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Oyster shells are cleaned and dried in preparation for larval settling as part of the Oyster Restoration Project and the Horn Point Laboratory oyster hatchery.
Oyster shells for restoration
Oyster shells are cleaned and dried in preparation for setting oyster larvae for restoration, as part of the Oyster Restoration Project in conjunction with the Horn Point Laboratory oyster hatchery.
Oyster shells for restoration
Collecting plankton along the Patuxent River
Plankton collection
On deck the Aquarius during a cruise along the Patuxent River
Raingear on deck
David Needham adds formalin to sample bacteria and viruses in a tributary of Monie Bay, National Estuarine Research Reserve
Sampling bacteria and viruses in Monie Bay, NERRS
Preparing a sediment core for sampling
Sediment core preparation
This sediment grab remains open when sent to the bottom and the release snaps shut the mouth for sediment collection.
Sediment grab
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
Sediments from the Patuxent River are sifted through onboard the R/V Aquarius to collect and identify benthic organisms
Sifting for benthic organisms
Water samples from the Patuxent River are prepared for analysis on board the R/V Aquarius
Water sample preparation
Oyster biological indicators are deployed in mesh cages that will be suspended 0.5 meters above the bottom by the white buoys and anchored by the bricks.
Cages for deploying oyster biological indicators
Making field measurements and sampling along a depth profile in the Patuxent River in the rain.
Measurements in the rain
The R/V Aquarius: built 1964, length: 64', beam: 16', height: 28', draft: 5'6
R/V Aquarius
The 2008 Severn River Report Card Release. The report card summarizes 2008 water quality results, which are based on data collected by the Severn Riverkeeper Program. This report card helps to clarify the Severn's health, and provides instructions on what individuals can do to improve its condition. The release of this report card was attended by local, state, and federal representatives, Severn River Keepers, and IAN staff.
Severn River Report Card Release
Assembled gear to deploy oyster biological indicators. Cages will hold the oysters and will be suspended 0.5 meters above the bottom by the buoys and anchored by the bricks.
Cages for deploying oyster biological indicators
The grab sampler will collect sediment samples once the spring releases the jaws at the bottom of the Patuxent River.
Sediment grab sampler
Gas chromatograph with electron capture detector
Gas chromatograph with electron capture detector
Illustration of a meteorological tower
Meteorological tower
Collecting water samples in Maryland's Coastal Bays
Collecting water samples
Oysters in bags hang off the side of the Horn Point Laboratory dock on the Choptank River on the Chesapeake Bay
Sitting off the dock on the Bay
Oysters are placed in cages which are suspended by buoys and anchored with bricks.
Cages for oyster biological indicators
Excess fine grained oxic and anoxic sediments from a sample core taken from the Patuxent River
Fine sediments from Patuxent River
The oysters in this cage are being deployed as biological indicators of nitrogen source. They will be suspended 0.5 meters above the bottom by the white buoy.
Oyster biological indicators
Measuring Secchi depth in frozen water presents a challenge.
Secchi disc on ice
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2020 Horns Point Rd
Cambridge, MD 21613

410-221-2048

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