http://lod.bco-dmo.org/id/dataset/737534
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2018-05-23
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Depth profiles of temperature, conductivity, dissolved oxygen, pH, chlorophyll fluorescence, etc., collected with a SeaBird SBE 25plus CTD in Lake Michigan during 2017, 2018, and 2019
2022-11-01
publication
2022-11-01
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-03-15
publication
https://doi.org/10.1575/1912/bco-dmo.737534.1
Harvey Bootsma
University of Wisconsin
principalInvestigator
Qian Liao
University of Wisconsin
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Bootsma, H., Liao, Q. (2024) Depth profiles of temperature, conductivity, dissolved oxygen, pH, chlorophyll fluorescence, etc., collected with a SeaBird SBE 25plus CTD in Lake Michigan during 2017, 2018, and 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 3) Version Date 2022-11-01 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.737534.3 [access date]
CTD Dataset Description: <p>CTD data were collected from Lake Michigan during 2017, 2018, and 2019.</p> Methods and Sampling: <p>Research cruises were conducted on R/V Neeskay and R/V Osprey. CTD profile data were collected by lowering a Sea-Bird SBEplus 25 CTD at a rate of 0.5 meters per second. Variables measured included depth, temperature, conductivity, photosynthetically active radiation (PAR), pH, dissolved oxygen, pH, and chlorophyll <em>a</em> fluorescence.</p>
<p>The CTD was returned to Sea-Bird annually for servicing and calibration of all sensors.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1658390 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1658390
completed
Harvey Bootsma
University of Wisconsin
414-251-9231
School of Freshwater Sciences 600 E. Greenfield Ave.
Milwaukee
WI
53204
USA
hbootsma@uwm.edu
pointOfContact
Qian Liao
University of Wisconsin
414-229-4228
Department of Civil and Environmental Engineering P.O. Box 413
Milwaukee
WI
53201
USA
liao@uwm.edu
pointOfContact
asNeeded
Dataset Version: 3
Unknown
Year
Lat
Long
ISO_DateTime_UTC
Depth
Temp
Cond
SpCond
flECO_AFL
PAR
pH
DO
prdM
DOSat_pcnt
BeamAtt
Beam_pcnt
SeaBird SBEplus 25 CTD
theme
None, User defined
year
latitude
longitude
ISO_DateTime_UTC
depth
water temperature at measurement depth
conductivity
specific conductance
chlorophyll-a; fluorometric method
PAR
pH
dissolved Oxygen
water pressure
O2 saturation
beam attenuation
transmission
featureType
BCO-DMO Standard Parameters
Sea-Bird SBE 25 Sealogger CTD
instrument
BCO-DMO Standard Instruments
Neeskay_Cruises_2017-2020
Osprey_Lake_Michigan_2017-2020
service
Deployment Activity
Lake Michigan. Depth of 10 to 55 meters, approximately 5 to 15 km northeast of Milwaukee Harbor.
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research: Regulation of plankton and nutrient dynamics by hydrodynamics and profundal filter feeders
https://osprey.bco-dmo.org/project/670679
Collaborative Research: Regulation of plankton and nutrient dynamics by hydrodynamics and profundal filter feeders
<p><em>Overview:</em><br />
While benthic filter feeders are known to influence plankton and nutrient dynamics in shallow marine and freshwater systems, their role is generally considered to be minor in large, deep systems. However, recent evidence indicates that profundal quagga mussels (Dreissena rostriformis bugensis) have dramatically altered energy flow and nutrient cycling in the Laurentian Great Lakes and other larges aquatic systems, so that conventional nutrient-plankton paradigms no longer apply. Observed rates of phosphorus grazing by profundal quagga mussels in Lake Michigan exceed the passive settling rates by nearly an order of magnitude, even under stably stratified conditions. We hypothesize that the apparently enhanced particle deliver rate to the lake bottom results from high filtration capacity combined with vertical mixing processes that advect phytoplankton from the euphotic zone to the near-bottom layer. However, the role of hydrodynamics is unclear, because these processes are poorly characterized both within the hypolimnion as a whole and within the near-bottom layer. In addition, the implications for phytoplankton and nutrient dynamics are unclear, as mussels are also important nutrient recyclers. In the proposed interdisciplinary research project, state-of-the-art instruments and analytical tools will be deployed in Lake Michigan to quantify these critical dynamic processes, including boundary layer turbulence, mussel grazing, excretion and egestion, and benthic fluxes of carbon and phosphorus. Empirical data will be used to calibrate a 3D hydrodynamic-biogeochemical model to test our hypotheses.</p>
<p><em>Intellectual Merit:</em><br />
This collaborative biophysical project is structured around two primary questions: 1) What role do profundal dreissenid mussels play in large lake carbon and nutrient cycles? 2) How are mussel grazing and the fate of nutrients recycled by mussels modulated by hydrodynamics at scales ranging from mm (benthic boundary layer) to meters (entire water column)? The project will improve the ability to model nutrient and carbon dynamics in coastal and lacustrine waters where benthic filter-feeders are a significant portion of the biota. By so doing, it will address the overarching question of how plankton and nutrient dynamics in large, deep lakes with abundant profundal filter feeders differ from the conventional paradigm described by previous models. Additionally, the project will quantify and characterize boundary layer turbulence for benthic boundary layers in large, deep lakes, including near-bed turbulence produced by benthic filter feeders.</p>
<p><em>Broader Impacts:</em><br />
The project will provide new insight into the impacts of invasive dreissenid mussels, which are now threatening many large lakes and reservoirs across the United States. Dreissenid mussels appear to be responsible for a number of major changes that have occurred in the Great Lakes, including declines of pelagic plankton populations, declines in fish populations, and, ironically, nuisance algal blooms in the nearshore zone. As a result, conventional management models no longer apply, and managers are uncertain about appropriate nutrient loading targets and fish stocking levels. The data and models resulting from this project will help to guide those decisions. Additionally, the project will provide insight to bottom boundary layer physics, with applicability to other large lakes, atidal coastal seas, and the deep ocean. The project will leverage the collaboration and promote interdisciplinary education for undergraduate and graduate students from two universities (UW-Milwaukee and Purdue). The project will support 3 Ph.D. students and provide structured research experiences to undergraduates through a summer research program. The project will also promote education of future aquatic scientists by hosting a Biophysical Coupling Workshop for graduate students who participate in the annual IAGLR conferences, and the workshop lectures will be published for general access through ASLO e-Lectures and on an open-access project website.</p>
<p><em>Background publications are available at:</em><br />
<a href="http://onlinelibrary.wiley.com/doi/10.1002/2014JC010506/full" target="_blank">http://onlinelibrary.wiley.com/doi/10.1002/2014JC010506/full</a><br />
<a href="http://link.springer.com/article/10.1007/s00348-012-1265-9" target="_blank">http://link.springer.com/article/10.1007/s00348-012-1265-9</a><br />
<a href="http://aslo.net/lomethods/free/2009/0169.pdf" target="_blank">http://aslo.net/lomethods/free/2009/0169.pdf</a><br />
<a href="http://www.sciencedirect.com/science/article/pii/S0380133015001458" target="_blank">http://www.sciencedirect.com/science/article/pii/S0380133015001458</a></p>
<p><em>Note: </em>This is an NSF Collaborative Research Project.</p>
Filter Feeders Physics and Phosphorus
largerWorkCitation
project
eng; USA
oceans
Lake Michigan. Depth of 10 to 55 meters, approximately 5 to 15 km northeast of Milwaukee Harbor.
-87.86447
-87.7187
43.06992
43.09932
2017-05-11
2019-10-01
Lake Michigan
0
BCO-DMO catalogue of parameters from Depth profiles of temperature, conductivity, dissolved oxygen, pH, chlorophyll fluorescence, etc., collected with a SeaBird SBE 25plus CTD in Lake Michigan during 2017, 2018, and 2019
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/737549.rdf
Name: Year
Units: unitless
Description: <p>4-digit year</p>
http://lod.bco-dmo.org/id/dataset-parameter/737550.rdf
Name: Lat
Units: Decimal degrees
Description: <p>Latitude. Locations south of equator are negative.</p>
http://lod.bco-dmo.org/id/dataset-parameter/737551.rdf
Name: Long
Units: Decimal degrees
Description: <p>Longitude. Locations west of prime meridian are negative.</p>
http://lod.bco-dmo.org/id/dataset-parameter/737552.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>UTC Date and time. Local time + 5 hours between March 12, 2:00 a.m. and November 5, 2:00 a.m. Local time + 6 hours between November 5, 2:00 a.m. and March 12, 2:00 a.m. Formatted to ISO 8601 standard (YYYY-MM-DDThh:mmZ).</p>
http://lod.bco-dmo.org/id/dataset-parameter/737553.rdf
Name: Depth
Units: meters (m)
Description: <p>Depth below lake surface; resolution = 0.01; accuracy = 0.15</p>
http://lod.bco-dmo.org/id/dataset-parameter/737554.rdf
Name: Temp
Units: Degrees celsius (°C)
Description: <p>Water Temperature; resoultion = 0.0003; accuracy = 0.001</p>
http://lod.bco-dmo.org/id/dataset-parameter/737555.rdf
Name: Cond
Units: microsiemens per cm (uS/cm)
Description: <p>Water conductance; resoultion = 0.4 uS/cm; accuracy = 3 uS/cm</p>
http://lod.bco-dmo.org/id/dataset-parameter/737556.rdf
Name: SpCond
Units: microsiemens per cm (uS/cm)
Description: <p>Water Specific Conductance (conductance normalized to a temperature of 25 degrees celcius). Resolution = 0.4 uS/cm; accuracy = 3 uS/cm.</p>
http://lod.bco-dmo.org/id/dataset-parameter/737557.rdf
Name: flECO_AFL
Units: Fluorescence units that are calibrated to approximate chlorophyll concentration in units of microgram per liter (ug/L)
Description: <p>Chlorophyll a fluorescence.</p>
http://lod.bco-dmo.org/id/dataset-parameter/737558.rdf
Name: PAR
Units: micromoles of photons per square meter per second
Description: <p>Photosyntheticall active radiation (within the range of approximately 400 to 700 nm wavelength). Accuracy = 3%</p>
http://lod.bco-dmo.org/id/dataset-parameter/737559.rdf
Name: pH
Units: pH = -log10 [H+], where [H+] = moles per liter of the hydrogen ion.
Description: <p>pH is a measure of the concentration of free hydrogen ions. Resolution = 0.01; accuracy = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/737560.rdf
Name: DO
Units: milligrams per liter (mg/L)
Description: <p>Dissolved oxygen concentration; resolution = 0.01; accuracy = 2%.</p>
http://lod.bco-dmo.org/id/dataset-parameter/737561.rdf
Name: prdM
Units: decibars (dbar)
Description: <p>Pressure; resolution = 0.01; accuracy = 0.15</p>
http://lod.bco-dmo.org/id/dataset-parameter/737562.rdf
Name: DOSat_pcnt
Units: percent (%) saturation
Description: <p>Dissolved oxygen concentration as % saturation at in situ temperature and a pressure of 1.0 atmospheres. Calculated as: DOSat% = DO(mg/L)*100/(-0.00007*T^3+0.0075*T^2-0.3976*T+14.602. T = water temperature (oC). Resolution = 0.1; accuracy = 2%</p>
http://lod.bco-dmo.org/id/dataset-parameter/737563.rdf
Name: BeamAtt
Units: inverse meters (m-1)
Description: <p>Beam attenuation over 25 cm path length; accuracy = 0.02%</p>
http://lod.bco-dmo.org/id/dataset-parameter/737564.rdf
Name: Beam_pcnt
Units: percent (%)
Description: <p>Beam % transmission over 25 cm path length; accuracy = 0.02%</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
1781253
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/75f54adc-87d9-4abd-9429-4451e8517fc4/content
download
1842956
https://darchive.mblwhoilibrary.org/bitstream/1912/27000/1/dataset-737534_ctd__v2.tsv
download
1315130
https://darchive.mblwhoilibrary.org/bitstream/1912/23836/1/dataset-737534_ctd__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.737534.1
download
onLine
dataset
<p>Research cruises were conducted on R/V Neeskay and R/V Osprey. CTD profile data were collected by lowering a Sea-Bird SBEplus 25 CTD at a rate of 0.5 meters per second. Variables measured included depth, temperature, conductivity, photosynthetically active radiation (PAR), pH, dissolved oxygen, pH, and chlorophyll <em>a</em> fluorescence.</p>
<p>The CTD was returned to Sea-Bird annually for servicing and calibration of all sensors.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing:</strong><br />
All nutrient data are stored in a common database Following analyses, nutrient standard curves are examined to ensure that calibration coefficients are within the range of variability of a long-term (5-year) dataset (±3%). Fluorometer measurements are entered into a spreadsheet containing the fluorometer calibration coefficients, which are used to calculate chlorophyll <em>a</em> and phaeophytin concentrations. The fluorometer is calibrated annually against extracted chlorophyll <em>a</em>standards. CO2 and DIC gas chromatograph measurements are entered into a spreadsheet program that calculates all inorganic carbon species concentrations, as well as pH and carbonate alkalinity. Concentrations are then corrected for any temperature difference between in situ and time of analysis. Stable isotope measurements are stored in a stable isotope database, while DOC measurement data are stored along with nutrient, chlorophyll and inorganic carbon measurements in a chemistry database.</p>
<p>CTD data are processed using the "SBE Data Processing" software package provided by Sea-Bird Scientific. The processing modules used were configured as follows:</p>
<p>Data Conversion. Potential temperature anomaly set to 0. Tau correction is applied to dissolved oxygen measurements, with a 2-second window.</p>
<p>Filter. Low pass filter A time constant = 0.1 seconds. Low pass filter B time constant = 0.5 seconds.</p>
<p>Align CTD. An advance value of 0.1 seconds was applied to conductance measurements, and an advance value of 5 seconds was applied to dissolved oxygen measurements.</p>
<p>Loop Edit. Minimum CTD velocity set to 0.1 meters per second. Scans marked bad are excluded.</p>
<p>Bin Average. Bin type = Depth. Bin size = 0.25 meters. Both the upcast and the downcast were processed.<br />
&nbsp;</p>
Specified by the Principal Investigator(s)
Version 1 and 2:
- converted date/time field to ISO 8601 format;
- modified parameter names to conform with BCO-DMO naming conventions;
- replaced blanks (missing data), -9.99E-29, 9.99E-29, and #VALUE! with "nd" (no data);
- updated to version 2 on 2019-05-22.
Version 3:
- converted date/time field to ISO 8601 format;
- modified parameter names to conform with BCO-DMO naming conventions;
- rounded latitude and longitude values to 5 decimal places;
- removed 'nd' as the missing data identifier (missing data are empty/blank in the final CSV file);
- updated to version 3 on 2022-11-01.
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
SeaBird SBEplus 25 CTD
SeaBird SBEplus 25 CTD
PI Supplied Instrument Name: SeaBird SBEplus 25 CTD Instrument Name: Sea-Bird SBE 25 Sealogger CTD Instrument Short Name:CTD SBE 25 Instrument Description: The Sea-Bird SBE 25 SEALOGGER CTD is battery powered and is typically used to record data in memory, eliminating the need for a large vessel, electrical sea cable, and on-board computer. All SBE 25s can also operate in real-time, transmitting data via an opto-isolated RS-232 serial port. Temperature and conductivity are measured by the SBE 3F Temperature sensor and SBE 4 Conductivity sensor (same as those used on the premium SBE 9plus CTD). The SBE 25 also includes the SBE 5P (plastic) or 5T (titanium) Submersible Pump and TC Duct. The pump-controlled, TC-ducted flow configuration significantly reduces salinity spiking caused by ship heave, and in calm waters allows slower descent rates for improved resolution of water column features. Pressure is measured by the modular SBE 29 Temperature Compensated Strain-Gauge Pressure sensor (available in eight depth ranges to suit the operating depth requirement). The SBE 25's modular design makes it easy to configure in the field for a wide range of auxiliary sensors, including optional dissolved oxygen (SBE 43), pH (SBE 18 or SBE 27), fluorescence, transmissivity, PAR, and optical backscatter sensors. More information from Sea-Bird Electronics: http:www.seabird.com. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0040/
Cruise: Neeskay_Cruises_2017-2020
Neeskay_Cruises_2017-2020
R/V Neeskay
R/V Neeskay
vessel
Neeskay_Cruises_2017-2020
Harvey Bootsma
University of Wisconsin
Cruise: Osprey_Lake_Michigan_2017-2020
Osprey_Lake_Michigan_2017-2020
R/V Osprey
R/V Osprey
vessel
Osprey_Lake_Michigan_2017-2020
Harvey Bootsma
University of Wisconsin
R/V Neeskay
R/V Neeskay
vessel
R/V Osprey
R/V Osprey
vessel