BCO-DMO ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute NC_GLOBAL acquisition_description String Two surveys were conducted; one in the fall beginning October 30, 2000 and a\nsecond in the spring, beginning on April 23, 2001. Each cruise required 25\ndays over a period of five weeks. . Descriptive data, including geo-\nreferences, trawl duration, depth, salinity and temperature for each survey\nare presented. Obviously, a single year of data affords no ability to develop\na time series to be used for more than anything but the most general of\nconclusions. Also, since this was the first year, the first few weeks of the\nfall survey, especially, was a period in which the crew was testing and\ndeveloping skills, procedures, and methods. Nevertheless, data collected from\nthis first year does reveal some interesting findings. Ninety-nine taxonomic\ngroups of fish and invertebrates were caught. For this report, we have\nselected examples for which we can report results. The complete catch result\nsummaries are presented by species for each stratum. Fall 2000 Summary Seventy\neight of the 96 planned tows were made. Untowable bottom and presence of fixed\ngear prevented us from towing the 18 not towed. The volume of the total mixed\ncatch varied from a minimum of 4 kg to a maximum of 640 kg per tow. The\naverage weight of catch was about 122 kg per tow. The total number of species\ncaught in the fall was 80 with a low of 7 and high of 31 in any particular\ntow. Relative coastwide ranking for the top 10 species is reported below in\ndescending order.\n By Number | By Weight   \n---|---  \nHerring* | Silver Hake*   \nSilver Hake* | Lobster   \nMixed Shrimp | Herring*   \nAlewife | Dogfish*   \nLobster | Alewife   \nRainbow Smelt | Winter Flounder*   \nScallop* | Red Hake*   \nWinter Flounder* | Longhorn Sculpin   \nLonghorn Sculpin | Monkfish*   \nMenhaden | White Hake*   \n* Species managed by the New England Fisheries Management Council\n \nSpecies managed by the New England Fisheries Management Council Spring 2001\nOne hundred eleven tows were made in the spring. We were able to achieve this\nby anticipating untowable bottom and planning 1 extra randomly selected\nalternate tow per stratum for a total of 115 planned tows. Weight of total\nmixed catch varied from a minimum of 4.5 kg to a maximum of 5,007 kg per tow,\nwith an average of 87 kg per tow. Number of species caught per tow ranged from\n4 to 31. Total number of species caught during the Spring 2001 survey was 87.\nRelative coastwide ranking for the top 10 species is reported below in\ndescending order.\n By Number | By Weight   \n---|---  \nHerring* | Herring*   \nMixed Shrimp | Lobster   \nAlewife | Longhorn Sculpin   \nSilver Hake* | Sea Cucumber   \nBlue-back herring | Silver Hake*   \nLonghorn Sculpin | Alewife   \nLobster | Winter Flounder*   \nScallops* | American Plaice*   \nWinter Flounder* | Sea Scallop*   \nAmerican Plaice* | Sea Raven   \n* Species managed by the New England Fisheries Management Council.\n \nWith 61 finfish species and 38 types of invertebrates sampled, a species by\nspecies presentation of results is not practical for this report. However,\nfollowing are some examples of the sorts of results that this survey can\nproduce. Note that we include some examples of non-groundfish species to\ndemonstrate another attribute of a fisheries independent survey; that the\nsurvey can provide information beneficial for management of the system and not\nfocus soley on a select suite of target species. Information is gathered on an\necological community level. Rainbow smelt, for example, may not be directly\nexploited commercially but it provides enjoyment to upland recreational\nanglers and on an ecological level is a forage species for higher trophic\nlevels. Sculpins, cartilaginous species, and predator-prey ratios, for\nexample, have been used as indicators of system-wide health. Landings data do\nnot include information on these species. Over the long term, system shifts as\na result of climate change may be assessed as exemplified when the Fall Survey\nencountered species such as barracudina and scup that historically have not\nbeen common north of Cape Ann, Massachusetts. By looking at population\nstructure as well as distribution, the importance of shallow inshore habitat\nfor cod becomes clear. The Fall 2000 portion of Figure 8 shows a year class of\ncod that probably hatched in February-April 1999. Most are still in the\nshallowest strata. As the fish grow, they move offshore and disperse into\ndeeper water. In the Spring 2001 portion of Figure 8, one can see young of the\nyear in the shallow strata. Offshore in the spring, there appears to be more\ncod in the deeper strata but certainly not in the numbers that were observed\nthe previous fall. From a single year\\u2019s tow, it is not possible to know\nwhether or not the spring survey missed the next year class due to late\ninshore migration or whether there simply was a weak year class. Cod, and most\nother groundfish species, move into deeper (warmer) water in late fall to\nreturn in the spring as inshore waters warm. Whether the fish were still\nfarther offshore and had not migrated in at the time of the spring survey, we\ncannot determine. The spring of 2001 was cooler than normal. Subsequent\nyear\\u2019s tows and comparisons with the offshore NMFS data set will help to\nresolve this question. As the Maine spring spawning closure for groundfish\n'sunsets' at the end of 2002, trawl survey data will be used to evaluate the\nneed to extend the closure during the next Maine legislative session.
attribute NC_GLOBAL awards_0_award_nid String 55021
attribute NC_GLOBAL awards_0_award_number String unknown NEC-CoopRes NEC
attribute NC_GLOBAL awards_0_funder_name String NorthEast Consortium
attribute NC_GLOBAL awards_0_funding_acronym String NEC
attribute NC_GLOBAL awards_0_funding_source_nid String 383
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Inshore Trawl station data
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_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2009-02-12T22:41:17Z
attribute NC_GLOBAL date_modified String 2019-02-18T21:33:07Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.2796.1
attribute NC_GLOBAL Easternmost_Easting double -66.9147
attribute NC_GLOBAL geospatial_lat_max double 44.78543
attribute NC_GLOBAL geospatial_lat_min double 42.8466
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -66.9147
attribute NC_GLOBAL geospatial_lon_min double -70.7585
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/2796 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Custom Trawl
attribute NC_GLOBAL instruments_0_dataset_instrument_description String The net is a scaled down version of the most common shrimp and modified shrimp net design used by Maine’s dragger fleet. The net was designed by the vessel owner and his net designer, Jeff Flagg, to fish effectively, be easily maintained, and be towed by vessels ranging from 45 - 70 ft. with nominal horsepower. Net tapers were cut to permit the shape of the net to get maximum height, while allowing the net to remain tight on the bottom. The net is shackled from the footrope to the frame using two 3/8-inch shackles to a banded wire that runs parallel with the footrope. Heavy rubber wing bobbins retard bottom wing lift. The top leg is 3/8th inch wire, 15 fathoms long, and the bottom leg is 15 fathoms. The net is constructed of 2 inch mesh overall with a 1/2 inch mesh liner in the cod end. Doors are #7.5 Bisons. The 70 ft. footrope includes 70’ of 6 inch cookies. Chain sweeps were not used. Between surveys, the net is sent back to the manufacturer where it is returned to specification.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 5481
attribute NC_GLOBAL instruments_0_description String A net towed through  the water column designed to sample free-swimming nekton or fish, varies in design depending on the research project.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/23/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Trawl_custom
attribute NC_GLOBAL instruments_0_instrument_nid String 634
attribute NC_GLOBAL instruments_0_supplied_name String Trawl_custom
attribute NC_GLOBAL keywords String altimetry, bco, bco-dmo, biological, chemical, data, dataset, date, depth, depth_fm, depth_strata, dmo, duration, erddap, flag, grid, laboratory, latitude, local, longitude, management, oceanography, office, preliminary, region, sal, satellite, se_flag, temperature, time, time_local, towid, year, yrday, yrday_local
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/2796/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/2796 (external link)
attribute NC_GLOBAL Northernmost_Northing double 44.78543
attribute NC_GLOBAL param_mapping String {'2796': {'lat': 'master - latitude', 'lon': 'master - longitude', 'depth_fm': 'flag - depth', 'date_local': 'flag - time'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/2796/parameters (external link)
attribute NC_GLOBAL people_0_person_name String John Sowles
attribute NC_GLOBAL people_0_person_nid String 50906
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Nancy Copley
attribute NC_GLOBAL people_1_person_nid String 50396
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String NEC-CoopRes
attribute NC_GLOBAL projects_0_acronym String NEC-CoopRes
attribute NC_GLOBAL projects_0_description String The Northeast Consortium encourages and funds cooperative research and monitoring projects in the Gulf of Maine and Georges Bank that have effective, equal partnerships among fishermen, scientists, educators, and marine resource managers.\nThe Northeast Consortium seeks to fund projects that will be conducted in a responsible manner. Cooperative research projects are designed to minimize any negative impacts to ecosystems or marine organisms, and be consistent with accepted ethical research practices, including the use of animals and human subjects in research, scrutiny of research protocols by an institutional board of review, etc.
attribute NC_GLOBAL projects_0_geolocation String Georges Bank, Gulf of Maine
attribute NC_GLOBAL projects_0_name String Northeast Consortium: Cooperative Research
attribute NC_GLOBAL projects_0_project_nid String 2045
attribute NC_GLOBAL projects_0_project_website String http://northeastconsortium.org/ (external link)
attribute NC_GLOBAL projects_0_start_date String 1999-01
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 42.8466
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Maine/New Hampshire Inshore Trawl Survey: station information from the F/V Robert Michael,F/V Tara Lynn NEC-JS2000-1 from the the Maine and New Hampshire coasts, 2000-2004 (NEC-CoopRes project)
attribute NC_GLOBAL title String Maine/New Hampshire Inshore Trawl Survey: station information from the F/V Robert Michael,F/V Tara Lynn NEC-JS2000-1 from the the Maine and New Hampshire coasts, 2000-2004 (NEC-CoopRes project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -70.7585
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable year short
attribute year _FillValue short 32767
attribute year actual_range short 2000, 2004
attribute year bcodmo_name String year
attribute year description String year local time
attribute year long_name String Year
attribute year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
variable time double
attribute time _CoordinateAxisType String Time
attribute time axis String T
attribute time bcodmo_name String date_local
attribute time description String date, local time, reported month/day/year
attribute time ioos_category String Time
attribute time long_name String Date Local
attribute time source_name String date_local
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01
attribute time units String seconds since 1970-01-01T00:00:00Z
variable region byte
attribute region _FillValue byte 127
attribute region actual_range byte 1, 5
attribute region bcodmo_name String region
attribute region description String One of five geographic regions:1 = NH-Southern ME 2 = Casco Bay - Midcoast3 = Penobscot Bay4 = Jerico-Frenchmans Bay5 = Downeast, MEFor more details see: Procedures and Protocols Report
attribute region long_name String Region
variable towid String
attribute towid bcodmo_name String unknown
attribute towid description String Unique identifier for each tow.  FL indicates Fall, SP indicates Spring,  followed by a two digit year designation and a consecutive tow number,
attribute towid long_name String Towid
variable longitude double
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -70.7585, -66.9147
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude in decimal degrees.  West is negative.
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 42.8466, 44.78543
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude in decimal degrees.  North is positive.
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable grid String
attribute grid bcodmo_name String unknown
attribute grid description String grid number, tow/station locations were based on a random selection procss using a 1 nautical square mile GIS grid system. (see Procudures and Protocals report)
attribute grid long_name String Grid
variable se_flag String
attribute se_flag bcodmo_name String se_flag
attribute se_flag description String tow start and end flags
attribute se_flag long_name String Se Flag
variable depth_strata byte
attribute depth_strata _FillValue byte 127
attribute depth_strata actual_range byte 1, 4
attribute depth_strata bcodmo_name String unknown
attribute depth_strata colorBarMaximum double 8000.0
attribute depth_strata colorBarMinimum double -8000.0
attribute depth_strata colorBarPalette String TopographyDepth
attribute depth_strata description String depth strata code where: 1 = 5-20 fathoms, 2 = 21-35 fathoms, 3 = 36-55 fathoms, 4 = >56 fathoms to approx. the 12-mile limitFrom Fall 2000 to Fall 2002, depth strata 4 was not sampled.  The fourth stratawas added in the Spring 2003 survey.
attribute depth_strata long_name String Depth
attribute depth_strata standard_name String depth
variable time_local String
attribute time_local bcodmo_name String time_local
attribute time_local description String time local, 24 hour clock
attribute time_local long_name String Time Local
attribute time_local units String hhmm
variable duration byte
attribute duration _FillValue byte 127
attribute duration actual_range byte 10, 27
attribute duration bcodmo_name String unknown
attribute duration description String length of tow in minutes(All catch data have been adjusted to a standard tow of 20 minutes duration.)
attribute duration long_name String Duration
attribute duration units String minutes
variable depth_fm double
attribute depth_fm _FillValue double NaN
attribute depth_fm actual_range double 6.2, 99.2
attribute depth_fm bcodmo_name String unknown
attribute depth_fm colorBarMaximum double 8000.0
attribute depth_fm colorBarMinimum double -8000.0
attribute depth_fm colorBarPalette String TopographyDepth
attribute depth_fm description String water depth at start or end of tow
attribute depth_fm long_name String Depth
attribute depth_fm standard_name String depth
attribute depth_fm units String fathoms
variable temp float
attribute temp _FillValue float NaN
attribute temp actual_range float 2.68, 40.8
attribute temp bcodmo_name String temperature
attribute temp description String temperature at sea floor
attribute temp long_name String Temperature
attribute temp nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/ (external link)
attribute temp units String degrees C
variable sal float
attribute sal _FillValue float NaN
attribute sal actual_range float 5.09, 33.98
attribute sal bcodmo_name String sal
attribute sal description String salinity at sea floor
attribute sal long_name String Sal
attribute sal nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/ (external link)
attribute sal units String parts/thousand
variable yrday_local float
attribute yrday_local _FillValue float NaN
attribute yrday_local actual_range float 113.341, 339.4479
attribute yrday_local bcodmo_name String yrday_local
attribute yrday_local description String local day and decimal time; as 326.5 for the 326th day of the year or November 22 at 1200 hours (noon)
attribute yrday_local long_name String Yrday Local
attribute yrday_local units String unitless

 
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