Dataset: Sandusky Bay Surveys 2019
Deployment: SB-2019-01

Survey data from Sandusky Bay, Lake Erie (2019)

Principal Investigator:

George S. Bullerjahn (Bowling Green State University, BGSU)

Co-Principal Investigator:

Robert Michael McKay (Bowling Green State University, BGSU)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Lake Erie Center for Fresh Waters and Human Health (Great Lakes Center)

Data URL:

https://www.bco-dmo.org/dataset-deployment/814612/data

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Description

Survey data from Sandusky Bay, Lake Erie, collected in 2019.

Methods & Sampling

Dataset acquisition description

Sampling and sample processing followed Salk et al., (2018).

Briefly, at each sampling location, water column physical and chemical parameters (pH, conductivity, temperature, dissolved oxygen) were measured using a YSI 600QS sonde (YSI Inc., Yellow Springs, OH, USA). Water samples were collected by Van Dorn bottle at 1m depth for the analysis of NO3, NH4, phosphate, TKN, TP, chl a concentrations, total microcystins and cell identification/biovolume enumeration. Samples for dissolved nutrient analysis were filtered immediately upon collection (0.2 um), kept on ice, and frozen upon return to the lab. Unfiltered sample water was collected for TKN and TP analysis and also frozen. Total and dissolved (<0.2 um) nutrient concentrations were determined following analysis of samples at the Ohio State University Stone Laboratory (Gibralter Island, OH, USA). Samples for chl a analysis were concentrated on GFC filters whereas raw water samples for microcystins were frozen in new polycarbonate bottles with subsequent analysis of both parameters by Ohio EPA.

Data Processing Description

Dataset Processing Description

BCO-DMO Processing:
- modified parameter names.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1840715	NSF Division of Ocean Sciences

Instruments

Van Dorn water sampler

Supplied Name: Van Dorn bottle

Supplied Description:

Instrument Type

Generic Name: Van Dorn water sampler

Generic Description:

A free-flushing water sample bottle comprising a cylinder (polycarbonate, acrylic or PVC) with a stopper at each end. The bottle is closed by means of a messenger from the surface releasing the tension on a latex band and thus pulling the two stoppers firmly into place. A thermometer can be mounted inside the bottle. One or more bottles can be lowered on a line to allow sampling at a single or multiple depth levels. Van Dorn samplers are suitable for for physical (temperature), chemical and biological sampling in shallow to very deep water. Bottles are typically lowered vertically through the water column although a horizontal version is available for sampling near the seabed or at thermoclines or chemoclines. Because of the lack of metal parts the bottles are suitable for trace metal sampling, although the blue polyurethane seal used in the Alpha version may leach mercury. The Beta version uses white ASA plastic seals that do not leach mercury but are less durable.

YSI Sonde 6-Series

Supplied Name: YSI 600QS sonde

Supplied Description:

YSI 600QS sonde (YSI Inc., Yellow Springs, OH, USA) – factory calibrated April 2018

Instrument Type

Generic Name: YSI Sonde 6-Series

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0737/

Generic Description:

YSI 6-Series water quality sondes and sensors are instruments for environmental monitoring and long-term deployments. YSI datasondes accept multiple water quality sensors (i.e., they are multiparameter sondes). Sondes can measure temperature, conductivity, dissolved oxygen, depth, turbidity, and other water quality parameters. The 6-Series includes several models. More from YSI.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Deployment	Deployment identifier	unitless	cruise_id
Station	Station name	unitless	station
Time	Time of survey (UTC); format: hh:mm:ss	unitless	time
ISO_DateTime_UTC	Date and time of survey (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ	unitless	ISO_DateTime_UTC
Lat	Latitude; positive values = North	decimal degrees	lat
long	Longitude; positive values = East	decimal degrees	lon
Max_Depth	Max. depth	meters (m)	depth_w
Sample_Depth	Sample depth	meters (m)	depth
Air_Temp	Air temperature	degrees Celsius	temp
Water_Temp	Water temperature	degrees Celsius	temp
Sample_DO	Dissolved oxygen	milligrams per liter (mg L-1)	O2
Cond	Conductivity	milli siemens per centimeter (mS cm-1)	cond
pH	pH	unitless (pH scale)	pH
chlorophyll_a	Chlorophyll a	micrograms per liter (ug L-1)	chl_a
microcystin	Microcystins	micrograms per liter (ug L-1)	no_bcodmo_term
Ammonium	Ammonium	micromoles per liter (umol L-1)	NH4
NO3_NO2	NO3 + NO2	micromoles per liter (umol L-1)	NO3_NO2
NO2	NO2	micromoles per liter (umol L-1)	NO2
DRP	Dissolved reactive phosphorus	micromoles per liter (umol L-1)	P
Silicate	Silicate	micromoles per liter (umol L-1)	Silicate
Nitrate	Nitrate	micromoles per liter (umol L-1)	NO3
TP	Total Phosphorus	micromoles per liter (umol L-1)	P
TKN	Total Kjeldahl Nitrogen	micromoles per liter (umol L-1)	N
TN	Total Nitrogen	micromoles per liter (umol L-1)	N
TN_TP_ratio	TN:TP ratio	molar ratio	no_bcodmo_term

Database

Contribute Data

Dataset: Sandusky Bay Surveys 2019
Deployment: SB-2019-01

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Sandusky Bay Surveys 2019Deployment: SB-2019-01

Dataset acquisition description

Dataset Processing Description

Dataset: Sandusky Bay Surveys 2019
Deployment: SB-2019-01