http://lod.bco-dmo.org/id/dataset/1009304 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 2026-10-08 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) CTD water profiles collected in the Yucatan Peninsula and Cozumel Island from 2022 to 2025 2026-10-09 publication 2026-10-09 revision BCO-DMO Linked Data URI 2026-10-09 creation http://lod.bco-dmo.org/id/dataset/1009304 Elizabeth Borda University of Texas at San Antonio principalInvestigator David Brankovits National Research Council of Italy principalInvestigator John Pohlman United States Geological Survey principalInvestigator Fernando Calderón-Gutiérrez University of Texas at San Antonio principalInvestigator Shari Rohret Woods Hole Oceanographic Institution 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: Borda, E., Brankovits, D., Pohlman, J., Calderón-Gutiérrez, F., Rohret, S. (2026) CTD water profiles collected in the Yucatan Peninsula and Cozumel Island from 2022 to 2025. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-10-09 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/1009304 [access date] Methods and Sampling: &lt;p&gt;Water profiles were conducted during each dive with a multi-parameter sonde (YSI EXO-1 or EXO-2; YSI Inc.) measuring depth (m), temperature (°C), salinity, dissolved oxygen (% saturation), pH, and turbidity (FNU) at 0.5 or 1 second intervals. EXO-2 deployments also included ORP, and Fluorescent Dissolved Organic Matter. The sonde was calibrated prior to deployment following the manufacturer’s recommendations. To ensure an undisturbed water-column profile, the sonde was carried by the lead diver with the sensor array oriented forward.&lt;/p&gt; Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2136377 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2136377 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2136322 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2136322 onGoing Elizabeth Borda University of Texas at San Antonio 210-784-2811 1 University Way Science and Technology Bldg, 311P San Antonio TX 78224 USA eborda@tamusa.edu pointOfContact David Brankovits National Research Council of Italy +36 30 626 3821 Water Research Institute, National Research Council of Italy (IRSA CNR) Pallanza Italy david.brankovits@cnr.it pointOfContact John Pohlman United States Geological Survey jpohlman@usgs.gov pointOfContact Fernando Calderón-Gutiérrez University of Texas at San Antonio fernando.calderon@sfasu.edu pointOfContact Shari Rohret Woods Hole Oceanographic Institution srohret@whoi.edu pointOfContact asNeeded Dataset Version: 1 Unknown ISO_DateTime_UTC Date Time Time_Fract_Sec Site_Name Cond Depth nLF_Cond ODO_sat ODO_local ODO_mgL Pressure Sal SpCond TDS Turbidity TSS pH Temp fDOM_QSU fDOM_RFU ORP YSI EXO 1 or EXO 2 theme None, User defined Date and time date time_local seconds_local site conductivity depth dissolved Oxygen water pressure practical salinity No BCO-DMO term turbidity pH Particulate Organic Material Oxidation_Reduction_Potential featureType BCO-DMO Standard Parameters YSI EXO multiparameter water quality sondes 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: Illuminating Cave Benthos in Subterranean Estuaries- Biodiversity, Ecology, and Role in Coastal Ecosystem Functioning https://osprey.bco-dmo.org/project/868765 Collaborative Research: Illuminating Cave Benthos in Subterranean Estuaries- Biodiversity, Ecology, and Role in Coastal Ecosystem Functioning <p><em>NSF Award Abstract:</em><br /> Karst subterranean estuaries (KSEs) occur worldwide where fresh and marine-derived waters mix within coastal aquifers, creating a chemical reaction zone that alters the composition of materials transported to the sea and sustains characteristic aquatic communities. Approximately one quarter of Earth’s population depends on karst (eroded limestone) water supplies that – within coastal regions – are directly threatened by rising sea level, uncontrolled groundwater extraction, and rapid coastal development. Yet, the role of these ecosystems in coastal biogeochemical cycling and groundwater health remains unknown. While pelagic constituents of flooded caves in KSEs have been studied for decades, the living benthic (cave floor / seafloor-hosted) fauna of these caves and caverns remains understudied. The overarching goal of this project is to better understand how benthic biodiversity affects ecosystem functioning across subsurface environmental gradients between freshwater aquifers and the marine environment. Flooded coastal caves allow the team to access the KSEs and make direct observations. Results of this work benefit marine benthic ecology and biology, biogeochemistry, paleoecology and biodiversity assessments. This interdisciplinary project establishes a multinational, multi-institutional collaboration, enhance research and scholarship opportunities at a predominantly undergraduate Hispanic-serving institution in Texas and support young investigators from under-represented groups in the sciences. For outreach, the project-associated PhD student, who is an African American female, is co-authoring a semi-autobiographical children’s book about cave diving and the wonders of cave-associated organisms.</p> <p>KSEs influence coastal carbon and nitrogen cycling because they buffer terrestrial material inputs with groundwater discharge into the oceans. While pelagic communities of flooded cave environments in KSEs have been studied for decades due to their adaptations, biogeography, and evolutionary origin, the living benthic fauna and their role in KSE elemental cycling remains understudied. The overall aim of this project is to establish the diversity and ecology of benthic eukaryotes across environmental gradients in extensive coastal caves flooded by the KSE in the Yucatan Peninsula and Cozumel Island (Mexico) and determine how they interact with benthic elemental cycles. This study provides a holistic characterization of KSE benthos using interdisciplinary field- and lab-based approaches including barcoding/meta-barcoding, meta-transcriptomics, ultrastructural analysis, and lab culturing that are being integrated with biogeochemical and hydrological measurements. Specifically, the investigators are characterizing (1) the drivers of spatial biodiversity patterns in coastal cave eukaryotic benthic communities across salinity/oxygen gradients, relative to organic inputs; (2) the role of benthic meiofauna (to nanobiota) communities, with emphasis on foraminifera, in ecosystem function relative to dominant biogeochemical processes that mediate organic matter transformations and nitrogen cycling; and (3) the temporal constraints of benthic meiofauna (to nanobiota) biodiversity and ecosystem resilience in response to seasonal hydrological variation associated with meteorological events.</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> Karst Cave Benthos largerWorkCitation project eng; USA oceans -87.3917 -86.9422 20.26667 20.7805 2022-09-23 2025-02-18 Yucatan and Cozumel, Mexico, aquifer/anchialine caves 0 BCO-DMO catalogue of parameters from CTD water profiles collected in the Yucatan Peninsula and Cozumel Island from 2022 to 2025 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/1009555.rdf Name: ISO_DateTime_UTC Units: unitless Description: <p>Date time that measurement was collected by the CTD in UTC.</p> http://lod.bco-dmo.org/id/dataset-parameter/1009556.rdf Name: Date Units: unitless Description: <p>Date measurement was collected by the CTD.</p> http://lod.bco-dmo.org/id/dataset-parameter/1009557.rdf Name: Time Units: unitless Description: <p>Time measurement was collected by the CTD in local time (GMT-5).</p> http://lod.bco-dmo.org/id/dataset-parameter/1009558.rdf Name: Time_Fract_Sec Units: unitless Description: <p>Time fraction.</p> http://lod.bco-dmo.org/id/dataset-parameter/1009559.rdf Name: Site_Name Units: unitless Description: <p>Site name</p> http://lod.bco-dmo.org/id/dataset-parameter/1009560.rdf Name: Cond Units: uS/cm Description: <p>Conductivity.</p> http://lod.bco-dmo.org/id/dataset-parameter/1009561.rdf Name: Depth Units: meters (m) Description: <p>Depth</p> http://lod.bco-dmo.org/id/dataset-parameter/1009563.rdf Name: nLF_Cond Units: uS/cm Description: <p>nLF Conductivity</p> http://lod.bco-dmo.org/id/dataset-parameter/1009564.rdf Name: ODO_sat Units: unitless Description: <p>Dissolved oxygen saturation percentage.</p> http://lod.bco-dmo.org/id/dataset-parameter/1009565.rdf Name: ODO_local Units: unitless Description: <p>Dissolved oxygen saturation - local - percentage.</p> http://lod.bco-dmo.org/id/dataset-parameter/1009566.rdf Name: ODO_mgL Units: mg/L Description: <p>Dissolved oxygen saturation</p> http://lod.bco-dmo.org/id/dataset-parameter/1009567.rdf Name: Pressure Units: PSI Description: <p>Pressure</p> http://lod.bco-dmo.org/id/dataset-parameter/1009568.rdf Name: Sal Units: PSU Description: <p>Salinity</p> http://lod.bco-dmo.org/id/dataset-parameter/1009569.rdf Name: SpCond Units: uS/cm Description: <p>Specific conductivity</p> http://lod.bco-dmo.org/id/dataset-parameter/1009570.rdf Name: TDS Units: units Description: <p>description</p> http://lod.bco-dmo.org/id/dataset-parameter/1009571.rdf Name: Turbidity Units: FNU Description: <p>Turbidity</p> http://lod.bco-dmo.org/id/dataset-parameter/1009572.rdf Name: TSS Units: mg/L Description: <p>Total Suspended Solids</p> http://lod.bco-dmo.org/id/dataset-parameter/1009573.rdf Name: pH Units: unitless Description: <p>pH</p> http://lod.bco-dmo.org/id/dataset-parameter/1009574.rdf Name: Temp Units: degrees Celcius Description: <p>Temperature</p> http://lod.bco-dmo.org/id/dataset-parameter/1009575.rdf Name: fDOM_QSU Units: QSU Description: <p>Dissolved Organic Matter</p> http://lod.bco-dmo.org/id/dataset-parameter/1009576.rdf Name: fDOM_RFU Units: RFU Description: <p>Dissolved Organic matter</p> http://lod.bco-dmo.org/id/dataset-parameter/1009577.rdf Name: ORP Units: mV Description: <p>Oxidation-Reduction Potential</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 https://osprey.bco-dmo.org/dataset/1009304/data/download download onLine dataset &lt;p&gt;Water profiles were conducted during each dive with a multi-parameter sonde (YSI EXO-1 or EXO-2; YSI Inc.) measuring depth (m), temperature (°C), salinity, dissolved oxygen (% saturation), pH, and turbidity (FNU) at 0.5 or 1 second intervals. EXO-2 deployments also included ORP, and Fluorescent Dissolved Organic Matter. The sonde was calibrated prior to deployment following the manufacturer’s recommendations. To ensure an undisturbed water-column profile, the sonde was carried by the lead diver with the sensor array oriented forward.&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p&gt;Water profiles were cleaned on R 4.6.0 with the R package dplyr 1.2.1. Data cleanup was restricted to removal of data outside of the water and removal of outliers.&lt;/p&gt; Specified by the Principal Investigator(s) Curation actions performed on the data files - Loaded `Cave_Benthos_Profiles_DM.csv` as table `1009304_v1_cave_ctd_water_profiles`, using row 1 as the header and treating blank values and `NA` as missing. - Loaded `Profile Summary_DM.csv` as table `1009304_v1_cave_ctd_water_profiles_summary`, using row 2 as the header and treating blank values and `nd` as missing. - Renamed columns in `1009304_v1_cave_ctd_water_profiles` to standardized names, including `Date`, `Time`, `Time_Fract_Sec`, `Site_Name`, `Cond`, `nLF_Cond`, `ODO_sat`, `ODO_local`, `ODO_mgL`, `Pressure`, `Sal`, `SpCond`, `TDS`, `Turbidity`, `TSS`, `Temp`, `fDOM_QSU`, `fDOM_RFU`, and `ORP`. - Renamed columns in `1009304_v1_cave_ctd_water_profiles_summary` to standardized names, including `Profile_number`, `Sampling_rate`, `Cond`, `Depth`, `fDOM_QSU`, `fDOM_RFU`, `nLF_Cond`, `ODO_sat`, `ODO_local`, `ODO_mgL`, `ORP`, `Pressure`, `Sal`, `SpCond`, `TDS`, `Turbidity`, `TSS`, `pH_mV`, and `Temp`. - Combined the `Date` and `Time` columns in `1009304_v1_cave_ctd_water_profiles` into a new `ISO_DateTime_UTC` column, converting timestamps from `Etc/GMT-5` to UTC and formatting them as `%Y-%m-%dT%H:%M:%SZ`. - Reordered the columns in `1009304_v1_cave_ctd_water_profiles` as follows: `ISO_DateTime_UTC`, `Date`, `Time`, `Time_Fract_Sec`, `Site_Name`, `Cond`, `Depth`, `nLF_Cond`, `ODO_sat`, `ODO_local`, `ODO_mgL`, `Pressure`, `Sal`, `SpCond`, `TDS`, `Turbidity`, `TSS`, `pH`, `Temp`, `fDOM_QSU`, `fDOM_RFU`, and `ORP`. - Converted the `Date` column in `1009304_v1_cave_ctd_water_profiles_summary` from `%m/%d/%y` to a date type formatted as `%Y-%m-%d`. - Set column types in `1009304_v1_cave_ctd_water_profiles`: measurement fields were set as numeric, `TDS` as integer, `Date` and `Site_Name` as strings, `ISO_DateTime_UTC` as UTC datetime, `Time` as time, and `Time_Fract_Sec` as numeric. - Set column types in `1009304_v1_cave_ctd_water_profiles_summary`: `Date` as date, `Profile_number` as integer, `Sampling_rate` as numeric, and all remaining columns as strings. - Updated column metadata for `1009304_v1_cave_ctd_water_profiles`, including BCO-DMO standard name IDs, descriptions, and supplied units. `Depth` was designated as the primary parameter. - Saved the final tables as `1009304_v1_cave_ctd_water_profiles.csv` and `1009304_v1_cave_ctd_water_profiles_summary.csv`. 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 YSI EXO 1 or EXO 2 YSI EXO 1 or EXO 2 PI Supplied Instrument Name: YSI EXO 1 or EXO 2 PI Supplied Instrument Description:Water profiles were conducted during each dive with a multi-parameter sonde (YSI EXO-1 or EXO-2; YSI Inc.) measuring depth (m), temperature (°C), salinity, dissolved oxygen (% saturation), pH, and turbidity (FNU) at 0.5 or 1 second intervals. EXO-2 deployments also included ORP, and Fluorescent Dissolved Organic Matter.  Instrument Name: YSI EXO multiparameter water quality sondes Instrument Short Name:YSI EXO Instrument Description: Comprehensive multi-parameter, water-quality monitoring sondes designed for long-term monitoring, profiling and spot sampling. The EXO sondes are split into several categories: EXO1 Sonde, EXO2 Sonde, EXO3 Sonde. Each category has a slightly different design purpose with the EXO2 and EXO3 containing more sensor ports than the EXO1. Data are collected using up to four user-replaceable sensors and an integral pressure transducer. Users communicate with the sonde via a field cable to an EXO Handheld, via Bluetooth wireless connection to a PC, or a USB connection to a PC. Typical parameter specifications for relevant sensors include dissolved oxygen with ranges of 0-50 mg/l, with a resolution of +/- 0.1 mg/l, an accuracy of 1 percent of reading for values between 0-20 mg/l and an accuracy of +/- 5 percent of reading for values 20-50 mg/l. Temp ranges are from-5 to +50 degC, with an accuracy of +/- 0.001 degC. Conductivity has a range of 0-200 mS/cm, with an accuracy of +/-0.5 percent of reading + 0.001 mS/cm and a resolution of 0.0001 - 0.01 mS/cm.