http://lod.bco-dmo.org/id/dataset/879764
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
2022-09-07
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Eelgrass shoot density measurements taken during ecological field surveys along the eastern Pacific coast in June through August of 2019, 2020, and 2021.
2022-10-13
publication
2022-10-13
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-10-21
publication
https://doi.org/10.26008/1912/bco-dmo.879764.1
Drew Harvell
Cornell University
principalInvestigator
J. Emmett Duffy
Smithsonian Environmental Research Center
principalInvestigator
Carla P. Gomes
Cornell University
principalInvestigator
Timothy Hawthorne
University of Central Florida
principalInvestigator
John J. Stachowicz
University of California-Davis
principalInvestigator
Lillian Aoki
Cornell University
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: Harvell, D., Gomes, C. P., Hawthorne, T., Stachowicz, J. J., Duffy, J. E., Aoki, L. (2022) Eelgrass shoot density measurements taken during ecological field surveys along the eastern Pacific coast in June through August of 2019, 2020, and 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-10-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.879764.1 [access date]
Eelgrass meadow conditions assessed from eelgrass shoot density measurements Dataset Description: Methods and Sampling: <p>Field surveys of eelgrass meadow sites were conducted at mid-summer low tides at&nbsp;field sites along the west coast of North America in the U.S. and Canada.&nbsp; Samples and data were collected within the intertidal area of 32 eelgrass meadows distributed in six regions (Alaska, British Columbia, Washington, Oregon, California -Bodega Bay, and California -San Diego). Surveys were conducted between late June and early August in 2019, 2020, and 2021 by teams from six institutions.</p>
<p>For each site, three 20 meter transects were laid parallel to the shore at the shoreward (upper edge) of continuous eelgrass, and three lower (intertidal) 20 meter transects were laid at least 4 meters closer to the water.&nbsp; Shoot density and canopy cover were measured at meters 4, 8, 12, and 16.&nbsp; At each meter, a PVC quadrat was placed on the upper (landward) side of the transect tape, aligning the lower left corner of the quadrat with the meter mark.&nbsp; The percent cover&nbsp;within the quadrat area was recorded for seagrass, bare sediment, and other (macroalgae unless noted otherwise).&nbsp; Shoot densities, categorized by the number of vegetative and flowering shoots, were then counted.&nbsp; Only shoots rooted in the quadrat were included in the density counts.&nbsp; Quadrats for shoot density range in size from 0.0625 to 0.36 square meters.&nbsp; Quadrats for cover ranged in size from 0.09 to 1 square meter.&nbsp; Quadrat size was determined by expert judgment of the practitioners at each field site.&nbsp;&nbsp;</p>
<p>Transect locations were recorded using a hand-held GPS (exact model varied between field locations). Salinity was measured at the time of sampling using a refractometer.&nbsp;Temperature loggers (HOBO MX 2201 and UA-001-64, Onset, Bourne, MA) were deployed at each eelgrass meadow site to provide a continuous record of in situ temperature.&nbsp; For HOBO data, see&nbsp;https://www.bco-dmo.org/dataset/877355 and Related Datasets section below.</p>
<p><br />
<em>~ For methodology details, see Aoki et al. (2022)<br />
~ Additional details for the field surveys are available in the Eelgrass Disease Project Handbook.<br />
~ For 16S rRNA amplicon sequencing of eelgrass associated bacteria, refer to NCBI BioProject PRJNA802566 in the Related Datasets section below.&nbsp;&nbsp;</em><br />
&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829890 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829890
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829922 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829922
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829921 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829921
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829992 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829992
completed
Drew Harvell
Cornell University
607-254-4274
373 Pine Tree Road E321 Corson Hall
Ithaca
NY
14853
United States
cdh5@cornell.edu
pointOfContact
J. Emmett Duffy
Smithsonian Environmental Research Center
443-482-2453
Tennenbaum Marine Observatories Network 647 Contees Wharf Road
Edgewater
MD
21037
United States
duffye@si.edu
pointOfContact
Carla P. Gomes
Cornell University
607-255-9189
Dept. Computer Science 353 Gates Hall
Ithaca
NY
14853
USA
gomes@cs.cornell.edu
pointOfContact
Timothy Hawthorne
University of Central Florida
407-823-1030
Department of Sociology 4000 Central Florida Blvd
Orlando
FL
32816
US
timothy.hawthorne@ucf.edu
pointOfContact
John J. Stachowicz
University of California-Davis
530-752-1113
Department of Evolution and Ecology 1 Shields Ave
Davis
CA
95616
USA
jjstachowicz@ucdavis.edu
pointOfContact
Lillian Aoki
Cornell University
Data Science Initiative, Pacific Hall 204 1258 University of Oregon
Eugene
OR
97403-1258
United States
laoki@uoregon.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample_Date
Sample_Id
Region
Site_Code
Location
Tidal_Height
Depth
Salinity
Transect
Meter
Density_Quadrat_Size
Total_Shoots
Flowering_Shoots
Cover_Quadrat_Size
Percent_Seagrass
Percent_Bare
Percent_Other
Density_Shoots
TransectBeginDecimalLatitude
TransectBeginDecimalLongitude
TransectEndDecimalLatitude
TransectEndDecimalLongitude
Notes
handheld GPS
Epson Perfection V550 scanner
HOBO MX2201 temperature logger
HOBO UA-001-064 temperature logger
refractometer
theme
None, User defined
date
sample identification
region
site
site description
tide
depth
salinity
transect
transect_station
area_measured
abundance
percent coverage
latitude
longitude
comments
featureType
BCO-DMO Standard Parameters
Global Positioning System Receiver
Image scanner
Onset HOBO Pendant MX2201 temperature logger
Onset HOBO Pendant Temperature/Light Data Logger
Refractometer
instrument
BCO-DMO Standard Instruments
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: The role of a keystone pathogen in the geographic and local-scale ecology of eelgrass decline in the eastern Pacific
https://osprey.bco-dmo.org/project/776011
Collaborative Research: The role of a keystone pathogen in the geographic and local-scale ecology of eelgrass decline in the eastern Pacific
<p>This project is part of the Marine Global Earth Observatory (MarineGEO), directed by the Smithsonian’s Tennenbaum Marine Observatories Network (TMON); a global network of partners focused on understanding how coastal marine ecosystems work—and how to keep them working <a href="https://marinegeo.si.edu/">https://marinegeo.si.edu/</a></p>
<p>NSF Abstract:</p>
<p>Pathogens may be unrecognized key species in many ecosystems, causing massive impacts on other species and habitats despite the microscopic size of disease-causing organisms. Yet the triggers to disease epidemics likely involve complex interactions among changing environmental conditions and associated biological communities. In the ocean, understanding disease outbreaks has been hindered by inadequate knowledge of how these various influences interact to determine susceptibility and resilience to disease. This project integrates research in community and disease ecology with microbial genomics, geospatial analysis, and state-of-the-art computational approaches toward an unprecedented understanding of the causes and consequences of wasting disease in eelgrass, an important vegetation type supporting coastal and estuarine ecosystems throughout the northern hemisphere. The research advances frontiers in understanding the growing but poorly appreciated threat of marine diseases, how disease ecology interacts with environmental change, and its consequences for the extensive ecosystems and coastal communities that depend on eelgrass, across 23 degrees of latitude along the Pacific coast of North America. The research will inform better management of threatened seagrass ecosystems, which provide important services including fisheries habitat, erosion control, carbon storage, and capture of nutrient runoff. The research will foster integrative approaches in the next generation, including high school students, undergraduates, graduate students, and postdocs working on the project, and each investigator's institution will work to recruit participants from under-represented groups. Best practices developed under this award, including the Eelisa disease app and drone mapping, will be disseminated for broader surveillance of seagrass disease and coastal habitat quality by both professional and citizen scientists in coordination with the Global Ocean Observing System's (GOOS) develpoment of seagrass extent as an Essential Ocean Variable.</p>
<p>The triggers to marine disease epidemics are likely complex, and progress in understanding them has been hindered by a poor understanding of the multifaceted ecological context of the host-disease interaction. This project's overarching goal is to disentangle the web of direct and indirect interactions by which changing climate mediates prevalence of eelgrass wasting disease, and its consequences for threatened but important eelgrass ecosystems. The centerpiece is a comparative, cross-scale survey of eelgrass community composition, microbiome, and disease prevalence along thermal gradients of latitude and exposure to the ocean, providing the first coast-wide picture of disease dynamics in response to environmental change. In situ sampling will be linked to dynamics of eelgrass at landscape scales using unmanned aerial systems (drones) to quantify high-resolution changes in eelgrass extent and habitat quality. Experiments will test how the diverse biological community mediates impacts of the pathogen on eelgrass ecosystems.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Eelgrass disease
largerWorkCitation
project
eng; USA
biota
oceans
-133.343143
-117.10621
32.62535
55.739951
2019-07-01
2021-07-28
West coast of North America, from San Diego to Alaska
0
BCO-DMO catalogue of parameters from Eelgrass shoot density measurements taken during ecological field surveys along the eastern Pacific coast in June through August of 2019, 2020, and 2021.
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/880244.rdf
Name: Sample_Date
Units: unitless
Description: <p>Date when samples were collected in the field</p>
http://lod.bco-dmo.org/id/dataset-parameter/880245.rdf
Name: Sample_Id
Units: unitless
Description: <p>Unique code identifying field samples based on the region, site, transect, tidal height, and sample replicate</p>
http://lod.bco-dmo.org/id/dataset-parameter/880246.rdf
Name: Region
Units: unitless
Description: <p>Two-letter identifier for the geographic region where the sample was collected (AK=Alaska, BC=British Columbia, WA=Washington, OR=Oregon, BB=Bodega Bay in California, SD=San Diego in California)</p>
http://lod.bco-dmo.org/id/dataset-parameter/880247.rdf
Name: Site_Code
Units: unitless
Description: <p>One-letter identifier for the site within a geographic region where the sample was collected (A, B, C, D, E, F)</p>
http://lod.bco-dmo.org/id/dataset-parameter/880248.rdf
Name: Location
Units: unitless
Description: <p>Full name of each sampling site (eelgrass meadow) where samples were taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/880249.rdf
Name: Tidal_Height
Units: unitless
Description: <p>Single letter indicating the tidal height at which samples were collected. U = upper tidal height; L = lower tidal height</p>
http://lod.bco-dmo.org/id/dataset-parameter/880250.rdf
Name: Depth
Units: meters (m)
Description: <p>Depth relative to MLLW (mean lower low water)</p>
http://lod.bco-dmo.org/id/dataset-parameter/880251.rdf
Name: Salinity
Units: ppt
Description: <p>Salinity of surface water at the time of sampling (point measurement made with refractometer or probe)</p>
http://lod.bco-dmo.org/id/dataset-parameter/880252.rdf
Name: Transect
Units: unitless
Description: <p>Integer indicating the transect at which samples were collected. Upper transects = 1, 2, 3; Lower transects = 4, 5, 6.</p>
http://lod.bco-dmo.org/id/dataset-parameter/880253.rdf
Name: Meter
Units: unitless
Description: <p>Exact meter along the transect where an individual sample was collected (m4, m8, m12, m16, m20)</p>
http://lod.bco-dmo.org/id/dataset-parameter/880254.rdf
Name: Density_Quadrat_Size
Units: square meters (m^2)
Description: <p>Size (area) of quadrat used to measure seagrass shoot densities in the field</p>
http://lod.bco-dmo.org/id/dataset-parameter/880255.rdf
Name: Total_Shoots
Units: unitless
Description: <p>Total count of seagrass shoots (flowering and non-flowering) counted in the quadrat</p>
http://lod.bco-dmo.org/id/dataset-parameter/880256.rdf
Name: Flowering_Shoots
Units: unitless
Description: <p>Number of flowering shoots within the quadrat</p>
http://lod.bco-dmo.org/id/dataset-parameter/880257.rdf
Name: Cover_Quadrat_Size
Units: square meters (m^2)
Description: <p>Size (area) of quadrat used to measure seagrass and macroalgae cover in the field</p>
http://lod.bco-dmo.org/id/dataset-parameter/880258.rdf
Name: Percent_Seagrass
Units: unitless
Description: <p>Percent of quadrat area covered by seagrass canopy, from 0-1</p>
http://lod.bco-dmo.org/id/dataset-parameter/880259.rdf
Name: Percent_Bare
Units: unitless
Description: <p>Percent of quadrat area covered by bare sediment, from 0-1</p>
http://lod.bco-dmo.org/id/dataset-parameter/880260.rdf
Name: Percent_Other
Units: unitless
Description: <p>Percent of quadrat area covered by non-seagrass (e.g. macroalgae), from 0-1</p>
http://lod.bco-dmo.org/id/dataset-parameter/880261.rdf
Name: Density_Shoots
Units: shoots per square meter (shoots/m^2)
Description: <p>Seagrass shoot density</p>
http://lod.bco-dmo.org/id/dataset-parameter/880262.rdf
Name: TransectBeginDecimalLatitude
Units: decimal degrees
Description: <p>Latitudinal coordinate for the beginning (meter 0) of the transect</p>
http://lod.bco-dmo.org/id/dataset-parameter/880263.rdf
Name: TransectBeginDecimalLongitude
Units: decimal degrees
Description: <p>Longitudinal coordinate for the beginning (meter 0) of the transect</p>
http://lod.bco-dmo.org/id/dataset-parameter/880264.rdf
Name: TransectEndDecimalLatitude
Units: decimal degrees
Description: <p>Latitudinal coordinate for the end (meter 20) of the transect</p>
http://lod.bco-dmo.org/id/dataset-parameter/880265.rdf
Name: TransectEndDecimalLongitude
Units: decimal degrees
Description: <p>Longitudinal coordinate for the end (meter 20) of the transect</p>
http://lod.bco-dmo.org/id/dataset-parameter/880267.rdf
Name: Notes
Units: unitless
Description: <p>Comments from field and lab</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
306293
https://darchive.mblwhoilibrary.org/bitstream/1912/29450/1/dataset-879764_eelgrass-shoot-density__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.879764.1
download
onLine
dataset
<p>Field surveys of eelgrass meadow sites were conducted at mid-summer low tides at&nbsp;field sites along the west coast of North America in the U.S. and Canada.&nbsp; Samples and data were collected within the intertidal area of 32 eelgrass meadows distributed in six regions (Alaska, British Columbia, Washington, Oregon, California -Bodega Bay, and California -San Diego). Surveys were conducted between late June and early August in 2019, 2020, and 2021 by teams from six institutions.</p>
<p>For each site, three 20 meter transects were laid parallel to the shore at the shoreward (upper edge) of continuous eelgrass, and three lower (intertidal) 20 meter transects were laid at least 4 meters closer to the water.&nbsp; Shoot density and canopy cover were measured at meters 4, 8, 12, and 16.&nbsp; At each meter, a PVC quadrat was placed on the upper (landward) side of the transect tape, aligning the lower left corner of the quadrat with the meter mark.&nbsp; The percent cover&nbsp;within the quadrat area was recorded for seagrass, bare sediment, and other (macroalgae unless noted otherwise).&nbsp; Shoot densities, categorized by the number of vegetative and flowering shoots, were then counted.&nbsp; Only shoots rooted in the quadrat were included in the density counts.&nbsp; Quadrats for shoot density range in size from 0.0625 to 0.36 square meters.&nbsp; Quadrats for cover ranged in size from 0.09 to 1 square meter.&nbsp; Quadrat size was determined by expert judgment of the practitioners at each field site.&nbsp;&nbsp;</p>
<p>Transect locations were recorded using a hand-held GPS (exact model varied between field locations). Salinity was measured at the time of sampling using a refractometer.&nbsp;Temperature loggers (HOBO MX 2201 and UA-001-64, Onset, Bourne, MA) were deployed at each eelgrass meadow site to provide a continuous record of in situ temperature.&nbsp; For HOBO data, see&nbsp;https://www.bco-dmo.org/dataset/877355 and Related Datasets section below.</p>
<p><br />
<em>~ For methodology details, see Aoki et al. (2022)<br />
~ Additional details for the field surveys are available in the Eelgrass Disease Project Handbook.<br />
~ For 16S rRNA amplicon sequencing of eelgrass associated bacteria, refer to NCBI BioProject PRJNA802566 in the Related Datasets section below.&nbsp;&nbsp;</em><br />
&nbsp;</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing:</strong><br />
- Imported data from source file "meter_level_density.csv" into the BCO-DMO data system.&nbsp;Data file imported using missing data identifier&nbsp;"NA". Converted date&nbsp;to year-month-day format<br />
- Imported data from source file "combined_site_metadata.csv".&nbsp; Converted coordinates to decimal degrees, made LocationNames consistent.<br />
- Joined shoot metrics data with the revised combined site metadata<br />
- Added conventional header with dataset name, PI name, version date.<br />
- Modified parameter (column) names to conform with BCO-DMO naming conventions.</p>
<p><em><strong>Parameters/Fields for Supplemental Files </strong></em><br />
(The following parameter descriptions&nbsp;are for the Supplemental File titled "Eelgrass study site metadata".&nbsp; For this dataset's fields, please see the heading "Parameters" below).&nbsp;&nbsp;&nbsp;</p>
<ul>
<li><em><strong>SampleCollectionDate</strong></em>:&nbsp; Date when samples were collected in the field</li>
<li><em><strong>Region</strong></em>: Two-letter identifier for the geographic region where the sample was collected (AK=Alaska, BC=British Columbia, WA=Washington, OR=Oregon, BB=Bodega Bay in California, SD=San Diego in California)</li>
<li><em><strong>SiteCode:</strong></em>&nbsp;One-letter identifier for site within a geographic region where the sample was collected (A, B, C, D, E, F)</li>
<li><em><strong>LocationName</strong></em>: Full name of each sampling site (eelgrass meadow) where samples were taken</li>
<li><em><strong>TidalHeight</strong></em>: Single letter indicating the tidal height at which samples were collected.&nbsp; U = upper tidal height; L = lower tidal height</li>
<li><em><strong>Transect</strong></em>: Integer indicating the transect at which samples were collected.&nbsp; Upper transects = 1, 2, 3; Lower transects = 4, 5, 6.</li>
<li><em><strong>SampleProcessingDate</strong></em>: Date when samples were processed in the lab</li>
<li><em><strong>Depth</strong></em>: Depth relative to MLLW (mean lower low water)</li>
<li><em><strong>Salinity</strong></em>: Salinity of surface water at the time of sampling (point measurement made with refractometer or probe)</li>
<li><em><strong>LocationComments</strong></em>: Comments describing location including changes between sampling year</li>
<li><em><strong>T<strong>r</strong>ansectBeginDecimalLatitude</strong></em>: Latitudinal coordinate for the beginning (meter 0) of the transect</li>
<li><em><strong>TransectBeginDecimalLongitude</strong></em>: Longitudinal coordinate for the beginning (meter 0) of the transect</li>
<li><em><strong>TransectEndDecimalLatitude</strong></em>: Latitudinal coordinate for the end (meter 20) of the transect</li>
<li><em><strong>TransectEndDecimalLongitude</strong></em>: Longitudinal coordinate for the end (meter 20) of the transect</li>
<li><em><strong>Year</strong></em>: Year in which samples were collected</li>
</ul>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
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
handheld GPS
handheld GPS
PI Supplied Instrument Name: handheld GPS PI Supplied Instrument Description:Transect locations were recorded using a hand-held GPS (exact model varied between field locations). Instrument Name: Global Positioning System Receiver Instrument Short Name:GPS Instrument Description: The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/POS03/
Epson Perfection V550 scanner
Epson Perfection V550 scanner
PI Supplied Instrument Name: Epson Perfection V550 scanner PI Supplied Instrument Description:Cleaned eelgrass blades were imaged at high resolution (600 dpi) using an Epson Perfection V550 scanner. Instrument Name: Image scanner Instrument Short Name:scanner Instrument Description: An electronic device that generates a digital representation of an image for data input to a computer.
OR a receiver designed to search for a signal within a specified frequency range. [Definition Source: NCI]
HOBO MX2201 temperature logger
HOBO MX2201 temperature logger
PI Supplied Instrument Name: HOBO MX2201 temperature logger Instrument Name: Onset HOBO Pendant MX2201 temperature logger Instrument Short Name:Onset HOBO Pendant MX2201 Instrument Description: The Onset HOBO MX2201 is an in-situ instrument for wet or underwater applications. It supports soil temperature, temperature, and water temperature. A one-channel logger that records up to approximately 96,000 measurements or internal logger events with 8K bytes memory. It has a polypropylene housing case. Uses Bluetooth to transmit data. Can be used with a solar radiation shield. Measurement range: -20 deg C to 70 deg C. Accuracy: +/- 0.50 deg C from 0 deg C to 50 deg C. Water depth rating: 30.5 m
HOBO UA-001-064 temperature logger
HOBO UA-001-064 temperature logger
PI Supplied Instrument Name: HOBO UA-001-064 temperature logger Instrument Name: Onset HOBO Pendant Temperature/Light Data Logger Instrument Short Name:Onset HOBO Pendant Temp/Light Instrument Description: The Onset HOBO (model numbers UA-002-64 or UA-001-64) is an in-situ instrument for wet or underwater applications. It supports light intensity, soil temperature, temperature, and water temperature. A two-channel logger with 10-bit resolution can record up to approximately 28,000 combined temperature and light measurements with 64K bytes memory. It has a polypropylene housing case. Uses an optical USB to transmit data. A solar radiation shield is used for measurement in sunlight. Temperature measurement range: -20 deg C to 70 deg C (temperature). Light measurement range: 0 to 320,000 lux. Temperature accuracy: +/- 0.53 deg C from 0 deg C to 50 deg C. Light accuracy: Designed for measurement of relative light levels. Water depth rating: 30 m.
refractometer
refractometer
PI Supplied Instrument Name: refractometer PI Supplied Instrument Description:Salinity was measured at the time of sampling using a refractometer. Instrument Name: Refractometer Instrument Short Name:Refractometer Instrument Description: A refractometer is a laboratory or field device for the measurement of an index of refraction (refractometry). The index of refraction is calculated from Snell's law and can be calculated from the composition of the material using the Gladstone-Dale relation.
In optics the refractive index (or index of refraction) n of a substance (optical medium) is a dimensionless number that describes how light, or any other radiation, propagates through that medium.