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     data   graph     files  public [AE2413 FlaPS bulk] - Polysaccharide hydrolase activities from water samples collected at
various sites under varying hydrostatic pressures in the Western North Atlantic aboard R/V
Atlantic Explorer cruise AE2413 in May 2024 (Collaborative Research: Pressure effects on
microbially-catalyzed organic matter degradation in the deep ocean)
   ?   F   I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_968956_v1

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.968956.1
attribute NC_GLOBAL Easternmost_Easting double -60.0479
attribute NC_GLOBAL geospatial_lat_max double 42.17828
attribute NC_GLOBAL geospatial_lat_min double 34.99333
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -60.0479
attribute NC_GLOBAL geospatial_lon_min double -73.03333
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 4002.0
attribute NC_GLOBAL geospatial_vertical_min double 30.0
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://osprey.bco-dmo.org/dataset/968956 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL Northernmost_Northing double 42.17828
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 34.99333
attribute NC_GLOBAL summary String Heterotrophic bacteria and archaea (here: microbes) are critical drivers of the ocean's biogeochemical cycles, active throughout the depth of the ocean. Their capabilities and limitations help determine the rates and locations at which carbon and nutrients are regenerated, as well as the extent to which organic matter is preserved (Hedges 1992). In the deep ocean, at bathy- and abyssopelagic depths (ca. 1000-6000m), these communities are dependent upon the sinking flux of particulate organic matter (POM) from the surface ocean (Bergauer et al. 2018). This dependence means that heterotrophic microbial communities must produce the extracellular enzymes required to solubilize and hydrolyze high molecular weight (HMW) POM to sizes substrates suitable for cellular uptake. A recent global-scale investigation of deep-sea microbes in fact found that the genetic potential for exported (extracellular) enzymes among bacteria in deep waters was far greater than for communities in surface or mesopelagic waters (Zhao et al. 2020). We have new evidence that a substantial fraction of bacteria in bottom water from the North Atlantic Ocean use a specialized set of extracellular enzymes to rapidly take up HMW polysaccharides (Giljan et al. 2021), a substrate processing mechanism that would not be detected with the low molecular weight substrates used in most prior studies of microbial activity in the deep ocean (Nagata et al. 2010).
 
Through our collaboration with the Danish Center for Hadal Research, we were able to use pressurization systems and in situ specialized equipment to investigate the effects of pressures characteristic of bathy- and abyssopelagic depths on microbial communities and their extracellular enzymes in the open North Atlantic Ocean.  
 
Here we present the measurement of polysaccharide hydrolase activities above that measured for killed controls from various sites under varying hydrostatic pressures in the Western North Atlantic aboard R/V Atlantic Explorer, cruise AE2413 in May 2024.
attribute NC_GLOBAL time_coverage_end String 2024-05-19T15:11:35Z
attribute NC_GLOBAL time_coverage_start String 2024-05-10T22:28:00Z
attribute NC_GLOBAL title String [AE2413 FlaPS bulk] - Polysaccharide hydrolase activities from water samples collected at various sites under varying hydrostatic pressures in the Western North Atlantic aboard R/V Atlantic Explorer cruise AE2413 in May 2024 (Collaborative Research: Pressure effects on microbially-catalyzed organic matter degradation in the deep ocean)
attribute NC_GLOBAL Westernmost_Easting double -73.03333
variable deployment   String  
attribute deployment long_name String Deployment
attribute deployment units String unitless
variable station   String  
attribute station long_name String Station
attribute station units String unitless
variable latitude   float  
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range float 34.99333, 42.17828
attribute latitude axis String Y
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   float  
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float -73.03333, -60.0479
attribute longitude axis String X
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable date   String  
attribute date long_name String Date
attribute date units String unitless
variable time_local_est   String  
attribute time_local_est long_name String Time_local_est
attribute time_local_est units String unitless
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.71538008E9, 1.716131495E9
attribute time axis String T
attribute time ioos_category String Time
attribute time long_name String Iso_datetime_utc
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
variable cast_number   int  
attribute cast_number actual_range int 1, 8
attribute cast_number long_name String Cast_number
attribute cast_number units String unitless
variable site_descrip   String  
attribute site_descrip long_name String Depth
attribute site_descrip units String unitless
variable depth   int  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth actual_range int 30, 4002
attribute depth axis String Z
attribute depth ioos_category String Location
attribute depth long_name String Depth_actual
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable in_situ_temp   float  
attribute in_situ_temp actual_range float 2.22, 21.8
attribute in_situ_temp long_name String In_situ_temp
attribute in_situ_temp units String °C
variable sample_type   String  
attribute sample_type long_name String Sample_type
attribute sample_type units String unitless
variable incubation_pressure   String  
attribute incubation_pressure long_name String Incubation_pressure
attribute incubation_pressure units String MPa
variable incubation_Temp   int  
attribute incubation_Temp actual_range int 4, 4
attribute incubation_Temp long_name String Incubation_temp
attribute incubation_Temp units String °C
variable unamended_amended   String  
attribute unamended_amended long_name String Unamended_amended
attribute unamended_amended units String unitless
variable substrate   String  
attribute substrate long_name String Substrate
attribute substrate units String unitless
variable timepoint_no   int  
attribute timepoint_no actual_range int 0, 3
attribute timepoint_no long_name String Timepoint_no
attribute timepoint_no units String unitless
variable timepoint_days   int  
attribute timepoint_days actual_range int 0, 22
attribute timepoint_days long_name String Timepoint_days
attribute timepoint_days units String days
variable ratex_nM_hr   float  
attribute ratex_nM_hr actual_range float 0.0, 10.80925
attribute ratex_nM_hr long_name String Ratex_nm_hr
attribute ratex_nM_hr units String nmol L-1 hr-1
variable rate1_nM_hr   float  
attribute rate1_nM_hr actual_range float 0.0, 24.54198
attribute rate1_nM_hr long_name String Rate1_nm_hr
attribute rate1_nM_hr units String nmol L-1 hr-1
variable rate2_nM_hr   float  
attribute rate2_nM_hr actual_range float 0.0, 6.189979
attribute rate2_nM_hr long_name String Rate2_nm_hr
attribute rate2_nM_hr units String nmol L-1 hr-1
variable rate3_nM_hr   float  
attribute rate3_nM_hr actual_range float 0.0, 14.13477
attribute rate3_nM_hr long_name String Rate3_nm_hr
attribute rate3_nM_hr units String nmol L-1 hr-1
variable mean_rate_nM_hr   float  
attribute mean_rate_nM_hr actual_range float 0.0, 8.334901
attribute mean_rate_nM_hr long_name String Mean_rate_nm_hr
attribute mean_rate_nM_hr units String nmol L-1 hr-1
variable sd_rate_nM_hr   float  
attribute sd_rate_nM_hr actual_range float 0.0, 14.03575
attribute sd_rate_nM_hr long_name String Sd_rate_nm_hr
attribute sd_rate_nM_hr units String nmol L-1 hr-1
variable kcratex_nM_hr   float  
attribute kcratex_nM_hr actual_range float 0.0, 0.0
attribute kcratex_nM_hr long_name String Kcratex_nm_hr
attribute kcratex_nM_hr units String nmol L-1 hr-1
variable kcrate1_nM_hr   float  
attribute kcrate1_nM_hr actual_range float 0.0, 3.558629
attribute kcrate1_nM_hr long_name String Kcrate1_nm_hr
attribute kcrate1_nM_hr units String nmol L-1 hr-1
variable kcrate2_nM_hr   float  
attribute kcrate2_nM_hr actual_range float 0.0, 4.359041
attribute kcrate2_nM_hr long_name String Kcrate2_nm_hr
attribute kcrate2_nM_hr units String nmol L-1 hr-1
variable kcrate3_nM_hr   float  
attribute kcrate3_nM_hr actual_range float 0.0, 6.073808
attribute kcrate3_nM_hr long_name String Kcrate3_nm_hr
attribute kcrate3_nM_hr units String nmol L-1 hr-1
variable mean_kcrate_nM_hr   float  
attribute mean_kcrate_nM_hr actual_range float 0.0, 3.948512
attribute mean_kcrate_nM_hr long_name String Mean_kcrate_nm_hr
attribute mean_kcrate_nM_hr units String nmol L-1 hr-1
variable sd_kcrate_nM_hr   float  
attribute sd_kcrate_nM_hr actual_range float 0.0, 2.357524
attribute sd_kcrate_nM_hr long_name String Sd_kcrate_nm_hr
attribute sd_kcrate_nM_hr units String nmol L-1 hr-1

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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