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Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Acces- sible | Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID |
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data | graph | files | public | [inshore_trawl stations] - 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) (Northeast Consortium: Cooperative Research) | F I M | background | BCO-DMO | bcodmo_dataset_2796 |
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 second in the spring, beginning on April 23, 2001. Each cruise required 25 days over a period of five weeks. . Descriptive data, including geo- references, trawl duration, depth, salinity and temperature for each survey are presented. Obviously, a single year of data affords no ability to develop a time series to be used for more than anything but the most general of conclusions. Also, since this was the first year, the first few weeks of the fall survey, especially, was a period in which the crew was testing and developing skills, procedures, and methods. Nevertheless, data collected from this first year does reveal some interesting findings. Ninety-nine taxonomic groups of fish and invertebrates were caught. For this report, we have selected examples for which we can report results. The complete catch result summaries are presented by species for each stratum. Fall 2000 Summary Seventy eight of the 96 planned tows were made. Untowable bottom and presence of fixed gear prevented us from towing the 18 not towed. The volume of the total mixed catch varied from a minimum of 4 kg to a maximum of 640 kg per tow. The average weight of catch was about 122 kg per tow. The total number of species caught in the fall was 80 with a low of 7 and high of 31 in any particular tow. Relative coastwide ranking for the top 10 species is reported below in descending order. By Number | By Weight ---|--- Herring* | Silver Hake* Silver Hake* | Lobster Mixed Shrimp | Herring* Alewife | Dogfish* Lobster | Alewife Rainbow Smelt | Winter Flounder* Scallop* | Red Hake* Winter Flounder* | Longhorn Sculpin Longhorn Sculpin | Monkfish* Menhaden | White Hake* * Species managed by the New England Fisheries Management Council Species managed by the New England Fisheries Management Council Spring 2001 One hundred eleven tows were made in the spring. We were able to achieve this by anticipating untowable bottom and planning 1 extra randomly selected alternate tow per stratum for a total of 115 planned tows. Weight of total mixed catch varied from a minimum of 4.5 kg to a maximum of 5,007 kg per tow, with an average of 87 kg per tow. Number of species caught per tow ranged from 4 to 31. Total number of species caught during the Spring 2001 survey was 87. Relative coastwide ranking for the top 10 species is reported below in descending order. By Number | By Weight ---|--- Herring* | Herring* Mixed Shrimp | Lobster Alewife | Longhorn Sculpin Silver Hake* | Sea Cucumber Blue-back herring | Silver Hake* Longhorn Sculpin | Alewife Lobster | Winter Flounder* Scallops* | American Plaice* Winter Flounder* | Sea Scallop* American Plaice* | Sea Raven * Species managed by the New England Fisheries Management Council. With 61 finfish species and 38 types of invertebrates sampled, a species by species presentation of results is not practical for this report. However, following are some examples of the sorts of results that this survey can produce. Note that we include some examples of non-groundfish species to demonstrate another attribute of a fisheries independent survey; that the survey can provide information beneficial for management of the system and not focus soley on a select suite of target species. Information is gathered on an ecological community level. Rainbow smelt, for example, may not be directly exploited commercially but it provides enjoyment to upland recreational anglers and on an ecological level is a forage species for higher trophic levels. Sculpins, cartilaginous species, and predator-prey ratios, for example, have been used as indicators of system-wide health. Landings data do not include information on these species. Over the long term, system shifts as a result of climate change may be assessed as exemplified when the Fall Survey encountered species such as barracudina and scup that historically have not been common north of Cape Ann, Massachusetts. By looking at population structure as well as distribution, the importance of shallow inshore habitat for cod becomes clear. The Fall 2000 portion of Figure 8 shows a year class of cod that probably hatched in February-April 1999. Most are still in the shallowest strata. As the fish grow, they move offshore and disperse into deeper water. In the Spring 2001 portion of Figure 8, one can see young of the year in the shallow strata. Offshore in the spring, there appears to be more cod in the deeper strata but certainly not in the numbers that were observed the previous fall. From a single year\u2019s tow, it is not possible to know whether or not the spring survey missed the next year class due to late inshore migration or whether there simply was a weak year class. Cod, and most other groundfish species, move into deeper (warmer) water in late fall to return in the spring as inshore waters warm. Whether the fish were still farther offshore and had not migrated in at the time of the spring survey, we cannot determine. The spring of 2001 was cooler than normal. Subsequent year\u2019s tows and comparisons with the offshore NMFS data set will help to resolve this question. As the Maine spring spawning closure for groundfish 'sunsets' at the end of 2002, trawl survey data will be used to evaluate the need 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/ |
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 |
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/ |
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 |
attribute | NC_GLOBAL | metadata_source | String | https://www.bco-dmo.org/api/dataset/2796 |
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 |
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. The 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/ |
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 | [inshore_trawl stations] - 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) (Northeast Consortium: Cooperative Research) |
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/ |
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/ |
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/ |
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/ |
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/ |
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 |
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.