Dataset: Simultaneous light intensity measurements from a HOBO light intensity logger and a cosine-corrected PAR sensor in Lameshur Bay, St. John, U.S. Virgin Islands in January of 2021

ValidatedFinal no updates expectedDOI: 10.26008/1912/bco-dmo.892308.1Version 1 (2023-03-21)Dataset Type:Other Field Results

Principal Investigator: Peter J. Edmunds (California State University Northridge)

Student: John Girard (California State University Northridge)

BCO-DMO Data Manager: Amber D. York (Woods Hole Oceanographic Institution)

Project: Collaborative Research: Pattern and process in the abundance and recruitment of Caribbean octocorals (Octocoral Community Dynamics)

Project: RUI: Pattern and process in four decades of change on Caribbean reefs (St John Coral Reefs)

Abstract

These data represent simultaneous measurements taken by a HOBO light intensity logger (model UA-0002-64) measuring in lux and a cosine-corrected PAR sensor (LI-192, Li-Cor Biosciences) fitted by the manufacturer into a logger (miniPAR, Precision Measurement Engineering) measuring PAR in µmol photon m-2 s-1. This was done at the Tektite site at 9 m depth in Lameshur Bay, St. John, U.S. Virgin Islands during January of 2021. This was done to cross-calibrate illuminance data (lux) from the HOBO log...

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Location
Tektite site in Lameshur Bay, St. John, U.S. Virgin Islands at 9-m depth
Research conducted from the University of the Virgin Islands Marine Station in Lameshur Bay in Jan 2019.

Methods & Sampling:
The HOBO and PAR logger were synchronized, deployed next to one another at 9-m depth with their light sensors at the same depth and perpendicular to the surface. Loggers were deployed at the Tektite site, and set to take a light measurement once every minute.  Loggers started sampling at 14:05:00 (Local Time, Atlantic Standard Time, GMT -4) on January 25th 2021 and stopped sampling at 16:45:00 on January 27th 2021. Sampling days were characterized as clear, and sunny with few passing clouds and a calm sea state.

Instruments:
HOBO Light and Temperature Logger, Model UA-0002-64
Cosine-corrected PAR sensor (LI-192, Li-Cor Biosciences) fitted by the manufacturer into a logger (miniPAR, Precision Measurement Engineering)

Related Datasets

IsRelatedTo
Dataset: Benthic Invertebrate Abundances associated with Octocoral Forests of St. John, US Virgin Islands
Relationship Description: Octocoral measurements and invertebrate counts were done in the same quadrats. Therefore, the quadrat IDs correspond to each other across community & canopy data sets.
Girard, J., Edmunds, P. J. (2023) Benthic invertebrate abundances associated with octocoral forests in St. John, US Virgin Islands from July 2019 to Jan 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-03-21 doi:10.26008/1912/bco-dmo.892248.1
IsRelatedTo
Dataset: St. John Octocoral Forest Closure Photo Analysis for Community Quadrats
Relationship Description: Octocoral measurements and invertebrate counts were done in the same quadrats. Therefore, the quadrat IDs correspond to each other across community & canopy data sets.
Girard, J., Edmunds, P. J. (2023) Canopy closure values from photographs taken within octocoral forests in Lameshur Bay St. John, U.S. Virgin Islands from July 2019 to Jan 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-03-21 doi:10.26008/1912/bco-dmo.892258.1
IsRelatedTo
Dataset: Canopy Closure Data of the Octocoral Forests sampled for Light Intensity, St. John U.S. Virgin Islands
Relationship Description: Octocoral measurements and invertebrate counts were done in the same quadrats. Therefore, the quadrat IDs correspond to each other across community & canopy data sets.
Girard, J., Edmunds, P. J. (2023) Canopy closure values from photographs taken within octocoral forestsalong the south shore of St. John, U.S. Virgin Islands in March of 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-03-21 doi:10.26008/1912/bco-dmo.892323.1
IsRelatedTo
Dataset: Light intensity measurements associated with Octocoral Canopies from East Cabritte, St. John, U.S. Virgin Islands
Relationship Description: Octocoral measurements and invertebrate counts were done in the same quadrats. Therefore, the quadrat IDs correspond to each other across community & canopy data sets.
Girard, J., Edmunds, P. J. (2023) Light intensity (lux) of downwelling light upon the benthos along differing conditions of octocoral canopy formation in East Cabritte, in Grootpan Bay, St. John U.S. Virgin Islands in March of 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-03-21 doi:10.26008/1912/bco-dmo.892300.1
IsRelatedTo
Dataset: Light intensity measurements associated with Octocoral Canopies from Yawzi Point, St. John, U.S. Virgin Islands
Relationship Description: Octocoral measurements and invertebrate counts were done in the same quadrats. Therefore, the quadrat IDs correspond to each other across community & canopy data sets.
Girard, J., Edmunds, P. J. (2023) Light intensity (lux) of downwelling light upon the benthos along differing conditions of octocoral canopy formation in Lameshur Bay St. John, U.S. Virgin Islands in March of 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-03-21 doi:10.26008/1912/bco-dmo.892272.1

Related Publications

Results
Girard, J. F., & Edmunds, P. J. (2023). Effects of arborescent octocoral assemblages on the understory benthic communities of shallow Caribbean reefs. Journal of Experimental Marine Biology and Ecology, 561, 151870. https://doi.org/10.1016/j.jembe.2023.151870

Girard, J., Edmunds, P. J. (2023) Simultaneous light intensity measurements from a HOBO light intensity logger and a cosine-corrected PAR sensor in Lameshur Bay, St. John, U.S. Virgin Islands in January of 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-03-21 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.892308.1 [access date]

Terms of Use

This dataset is licensed under Creative Commons Attribution 4.0.


If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.

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Funded by the U.S. National Science Foundation