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log in [STING 1 TDN and TDP concentration] - Total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) of samples collected on the West Florida Shelf during STING I cruise AE2305 on R/V Atlantic Explorer from Feb 20 to Mar 05, 2023 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) The West Florida Shelf (WFS) is oligotrophic, with inorganic N and P concentrations typically at or below detection limits, and yet significant rates of primary productivity, including blooms of the cyanobacterial diazotroph Trichodesmium spp. as well as the harmful algal species Karenia brevis, are observed there. Consequently, dissolved organic nitrogen (DON) and dissolved organic phosphorus (DOP) are thought to be the primary sources of assimilative nutrients on the WFS. Here we report measurements of total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) concentrations made on samples collected on a cross-shelf cruise in Feb-Mar 2023 aboard the R/V Atlantic Explorer. Elevated concentrations of TDN (>12 µM) and TDP (>0.5 µM) were observed in the shallow, nearshore region, while to the west concentrations of both TDN and TDP decreased to values typically associated with oligotrophic North Atlantic waters (4 to 5 µM TDN and 0.05 to 0.1 µM TDP).\n\ncdm_data_type = Other\nVARIABLES:\nCRUISE_ID (unitless)\nSTING_ID (unitless)\nEVTNBR (unitless)\ntime (Iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\nDATE_UTC (unitless)\nTIME_UTC (unitless)\nDATE_GMT (unitless)\nTIME_GMT (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nPLATFORM (unitless)\nCASTNBR (unitless)\nSTNNBR (unitless)\nBTLNBR (unitless)\ndepth (m)\nTDP (micromoles per liter (µM))\nTDP_STDEV (micromoles per liter (µM))\nTDP_COUNT (replicate)\n... (5 more variables)\n BCO-DMO bcodmo_dataset_986688_v1
log in [STING 2 TDN and TDP concentration] - Total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) of samples collected on the West Florida Shelf during STING II cruise EN704 on R/V Endeavor from Jul 1 to Jul 12, 2023 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) The West Florida Shelf (WFS) is oligotrophic, with inorganic N and P concentrations typically at or below detection limits, and yet significant rates of primary productivity, including blooms of the cyanobacterial diazotroph Trichodesmium spp. as well as the harmful algal species Karenia brevis, are observed there. Consequently, dissolved organic nitrogen (DON) and dissolved organic phosphorus (DOP) are thought to be the primary sources of assimilative nutrients on the WFS. Here we report measurements of total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) concentrations made on samples collected on a cruise in July of 2023 aboard the R/V Endeavor. Elevated concentrations of TDN (>12 µM) and TDP (>0.5 µM) were observed in the shallow, nearshore region, while to the west concentrations of both TDN and TDP decreased to values typically associated with oligotrophic North Atlantic waters (4 to 5 µM TDN and 0.05 to 0.1 µM TDP).\n\ncdm_data_type = Other\nVARIABLES:\nCRUISE_ID (unitless)\nSTING_ID (unitless)\nEVTNBR (unitless)\ntime (Iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\nDATE_UTC (unitless)\nTIME_UTC (unitless)\nDATE_SHIP (unitless)\nTIME_SHIP (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nPLATFORM (unitless)\nCASTNBR (unitless)\nSTNNBR (unitless)\nTRANSECT_LOCATION (unitless)\nINC_NBR (unitless)\nINC_TREATMENT (unitless)\nINC_TIME (hours)\nBTLNBR (unitless)\n... (9 more variables)\n BCO-DMO bcodmo_dataset_986861_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_928980_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_928980_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_928980_v1/ public [STING I and STING II extracted chlorophyll a and pheophytin] - Chlorphyll a and pheophytin from two cruises performed as part of the STING project from R/V Atlantic Explorer AE2305 (Sting I cruise) and R/V Endeavor EN704 (Sting II cruise) in the Gulf of Mexico near Florida from February to July 2023 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) These data include the average (n=3 replicates per measurement) measured chlorphyll a and pheophytin from two cruises performed as part of the STING project.  STING I (AE2305) was aboard the R/V Atlantic Explorer from 2023-02-20 to 2023-03-06. STING II (EN704) was aboard the R/V Endeavor from 2023-07-01 to 2023-07-12.\n\ncdm_data_type = Other\nVARIABLES:\nCruise (unitless)\nStation (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\ndepth (m)\nDate (unitless)\nSTING_ID (unitless)\nCollection (unitless)\nType (unitless)\nChla (micrograms/liter (ug/l))\nPheophytin (micrograms/liter (ug/l))\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_928980_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_928980_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_928980_v1/index.htmlTable https://www.bco-dmo.org/dataset/928980 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_928980_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_928980_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_928980_v1
log in [STING I and STING II radium] - Dissolved radium from STING I Cruise AE2305 on R/V Atlantic Explorer and STING II Cruise EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys in the Gulf of Mexico from Feb to Jul 2023 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) Activities of dissolved radium (Ra-223, Ra-224, Ra-226, Ra-228), Th-228, and Ac-227, collected on two cruises in the Gulf of Mexico. STING I cruise AE2305 on R/V Atlantic Explorer was deployed from February to March 2023. STING II consisted of EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys and took place from June to July 2023. This project investigates how boundary sources, including rivers and submarine groundwater discharge, deliver important nutrients and metals to the coastal ecosystems of the West Florida Shelf. Here, dissolved radium and parent isotopes have been measured to trace boundary sources of nutrients and metals entering the West Florida Shelf.\n\ncdm_data_type = Other\nVARIABLES:\nCruise_name (unitless)\nStation (unitless)\nSTING_ID (unitless)\nSample_Name (unitless)\ntime (Datetime_utc, seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\ndepth (m)\nSalinity (psu)\nTemperature (degrees Celsius)\nRa223 (dpm/100L)\nRa223_BDL_flag (unitless)\nRa223_err (dpm/100L)\nRa223_err_BDL_flag (unitless)\nRa224 (dpm/100L)\nRa224_BDL_flag (unitless)\nRa224_err (dpm/100L)\nRa224_err_BDL_flag (unitless)\nRa226 (dpm/100L)\nRa226_BDL_flag (unitless)\n... (14 more variables)\n BCO-DMO bcodmo_dataset_982223_v1
log in [STING Land TDN and TDP data] - Total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) of samples collected from rivers draining onto the West Florida Shelf and submarine groundwater wells on the Western coast of Florida from Nov 2022 to Mar 2024 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) The West Florida Shelf (WFS) is oligotrophic, with inorganic N and P concentrations typically at or below detection limits, and yet significant rates of primary productivity, including blooms of the cyanobacterial diazotroph Trichodesmium spp. as well as the harmful algal species Karenia brevis, are observed there. Consequently, dissolved organic nitrogen (DON) and dissolved organic phosphorus (DOP) are thought to be the primary sources of assimilative nutrients on the WFS. Here we report measurements of total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) concentrations made on samples collected quarterly from rivers draining onto the WFS as well as from submarine groundwater wells on three transects extending from the Florida Nature Coast in the north to Venice Headland in the south. Elevated concentrations of TDN (>12 µM) and TDP (>0.5 µM) were observed in riverine and groundwater samples, as well as in the shallow, nearshore region, while to the west concentrations of both TDN and TDP decreased to values typically associated with oligotrophic North Atlantic waters (4 to 5 µM TDN and 0.05 to 0.1 µM TDP).\n\ncdm_data_type = Other\nVARIABLES:\nTYPE (unitless)\nSAMPLE_ID (unitless)\nSTING_ID (unitless)\nDATE (unitless)\nSTATION (unitless)\nSAMPLE (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nTDP (micromoles per liter (µM))\nTDP_STDEV (micromoles per liter (µM))\nTDP_COUNT (unitless)\nTDP_FLAG (unitless)\nTDN (micromoles per liter (µM))\nTDN_STDEV (micromoles per liter (µM))\nTDN_COUNT (unitless)\nTDN_FLAG (unitless)\n BCO-DMO bcodmo_dataset_989225_v1
log in [STING macronutrient concentrations] - Dissolved Macronutrient Concentrations from Depth Profiles and Incubation Experiments from STING I Cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) Concentrations of inorganic dissolved macronutrients, including phosphate, nitrate plus nitrite (N+N), silicic acid, and nitrite, from phytoplankton shipboard incubation experiments and depth profiles collected on STING I cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023.\n\nThis project investigates how groundwater discharge delivers important nutrients to the coastal ecosystems of the West Florida Shelf. Preliminary studies indicate that groundwater may supply both dissolved organic nitrogen (DON) and iron in this region. In coastal ecosystems like the West Florida Shelf that have very low nitrate and ammonium concentrations, DON is the main form of nitrogen available to organisms. Nitrogen cycling is strongly affected by iron availability because iron is essential for both photosynthesis and for nitrogen fixation. This study will investigate the sources and composition of DON and iron, and their influence on the coastal ecosystem. The team will sample offshore groundwater wells, river and estuarine waters, and conduct two expeditions across the West Florida Shelf in winter and summer.\n\ncdm_data_type = Other\nVARIABLES:\nEVTNBR (unitless)\ntime (Iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\nDATE_UTC (unitless)\nTIME_UTC (unitless)\nDATE_GMT (unitless)\nTIME_GMT (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nPLATFORM (unitless)\nCASTNBR (unitless)\nSTNNBR (unitless)\nBTLNBR (unitless)\ndepth (m)\nPO4 (micromoles per liter (uM))\n... (20 more variables)\n BCO-DMO bcodmo_dataset_929305_v1
log in [STING macronutrient concentrations] - Dissolved Macronutrient Concentrations from Depth Profiles and Incubation Experiments from STING I Cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023 (Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes) Concentrations of inorganic dissolved macronutrients, including phosphate, nitrate plus nitrite (N+N), silicic acid, and nitrite, from phytoplankton shipboard incubation experiments and depth profiles collected on STING I cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023.\n\nThis project investigates how groundwater discharge delivers important nutrients to the coastal ecosystems of the West Florida Shelf. Preliminary studies indicate that groundwater may supply both dissolved organic nitrogen (DON) and iron in this region. In coastal ecosystems like the West Florida Shelf that have very low nitrate and ammonium concentrations, DON is the main form of nitrogen available to organisms. Nitrogen cycling is strongly affected by iron availability because iron is essential for both photosynthesis and for nitrogen fixation. This study will investigate the sources and composition of DON and iron, and their influence on the coastal ecosystem. The team will sample offshore groundwater wells, river and estuarine waters, and conduct two expeditions across the West Florida Shelf in winter and summer.\n\ncdm_data_type = Other\nVARIABLES:\nEVTNBR (unitless)\ntime (Iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\nDATE_UTC (unitless)\nTIME_UTC (unitless)\nDATE_GMT (unitless)\nTIME_GMT (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nPLATFORM (unitless)\nCASTNBR (unitless)\nSTNNBR (unitless)\nBTLNBR (unitless)\ndepth (m)\nPO4 (micromoles per liter (uM))\n... (20 more variables)\n BCO-DMO bcodmo_dataset_929305_v2

 
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