Dataset: Trawl biomass

Name: Biomass data from Aleutians offshore epibenthic trawls from R/V Oceanus OC1606A, OC1707A, 2016-2017 (Kelp Forest Ecosystem Engineer Loss project)
Published: 2019-01-09
Keywords: biota, oceans

Cite This Dataset

Spatial Extent: N:53.4108 E:-167 S:51.4269 W:-179

Temporal Extent: 2016-06-19 - 2017-07-23

Project:

Collaborative Research: Changes in ecosystem production and benthic biodiversity following the widespread loss of an ecosystem engineer (Kelp Forest Ecosystem Engineer Loss)

Principal Investigator:

Matthew Edwards (San Diego State University, SDSU)

Co-Principal Investigator:

Brenda Konar (University of Alaska Fairbanks, UAF)

Contact:

Aaron S. Bland (University of Alaska Fairbanks, UAF)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-01-09

Restricted:

Release Date:

2019-03-25

Validated:

Yes

Current State:

Final no updates expected

Biomass data from Aleutians offshore epibenthic trawls from R/V Oceanus OC1606A, OC1707A, 2016-2017 (Kelp Forest Ecosystem Engineer Loss project)

Abstract:

This dataset includes epibenthic community biomass collected offshore by trawls and reported as kilograms per 100 square meters.

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Description

This dataset includes epibenthic community biomass collected offshore by trawls and reported as kilograms per 100 square meters.

Methods & Sampling

Sampling locations were from the Aleutian Archipelago offshore between longitude 173.9 and -167.6 in June 2016 and July 2017.

Trawls were conducted with a 3.05 m plumb-staff beam trawl with a 7-mm mesh and a 4-mm codend liner (Gunderson & Ellis, 1986). For each trawl, the trawl net was towed for approximately 3 minutes on the seafloor with the vessel traveling at 1.5 knots. A temperature-depth recorder was attached to the trawl net to determine effective trawling distances. The start of each trawl was determined by the time at which the trawl net stopped descending in the depth profile, and the end of each trawl was determined by the time the trawl net began ascending. Trawl distances were determined by referencing the GPS coordinates of the research vessel for the start and end times of each trawl event. Occasionally, the trawl net became damaged by rocks during a trawl event, preventing effective sampling after the collision. For these trawls, the collision point was detectable by a sudden decrease in depth of the trawl net, and the effective trawling swath was assumed to be from the beginning of the trawl up to the collision point.

Organisms were sorted and identified to the lowest taxonomic level feasible. Members of each taxonomic group were counted and their damp-biomass (including shells for mollusks and crabs) was determined. Voucher specimens were prepared in 10% buffered formalin for those taxa that could not be identified in the field.

Some large samples were split in half. This is Indicated as the subsample_factor. A value of 2 (trawl 24) indicates that half of the trawl contents were taken for biomass and count measurements. The biomass and count values in the area-standardized data sheets are estimated by doubling the values recorded for the subsampled portion.

For sample #30, the biomass of Echinarachnius parma was not recorded. The biomass listed is an estimate based on the average biomass per individual from each other sample containing E. parma, multiplied by the number of E. parma found in the sample.

Data Processing Description

BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- corrected spelling of 5 taxa to agree with World Register of Marine Species names. See Parameter list below for submitted names, in parentheses.

Data Files

File
biomass_trawl.csv (Comma Separated Values (.csv), 36.90 KB) MD5:7811c233ec4f8004723ca802eeac18d6 Primary data file for dataset ID 729873

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1435194
NSF Division of Ocean Sciences	OCE-1435205

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
OC1606A		2016-06-17	R/V Oceanus	Genoa Sullaway (Chief Scientist)	data info
OC1707A		2017-07-18	R/V Oceanus	Matthew Edwards (Chief Scientist)	data info

Instruments

Beam Trawl

Supplied Name:

Supplied Description:

A 3.05 m plumb-staff beam trawl with a 7-mm mesh and a 4-mm codend liner

Instrument Type

Generic Name: Beam Trawl

Acronym: Beam trawl

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/24/

Generic Description:

A beam trawl consists of a cone-shaped body ending in a bag or codend, which retains the catch. In these trawls the horizontal opening of the net is provided by a beam, made of wood or metal, which is up to 12 m long. The vertical opening is provided by two hoop-like trawl shoes mostly made from steel. No hydrodynamic forces are needed to keep a beam trawl open. The beam trawl is normally towed on outriggers, one trawl on each side.

While fishing for flatfish the beam trawl is often equipped with tickler chains to disturb the fish from the seabed. For operations on very rough fishing grounds they can be equipped with chain matrices. Chain matrices are rigged between the beam and the groundrope and prevent boulders/stones from being caught by the trawl. Shrimp beam trawls are not so heavy and have smaller mesh sizes. A bobbin of groundrope with rubber bobbins keeps the shrimp beam trawl in contact with the bottom and gives flatfish the opportunity to escape.

Close bottom contact is necessary for successful operation. To avoid bycatch of most juvenile fishes selectivity devices are assembled (sieve nets, sorting grids, escape holes). While targeting flatfish the beam trawls are towed up to seven knots, therefore the gear is very heavy; the largest gears weighs up to 10 ton. The towing speed for shrimp is between 2.5 and 3 knots.

(from: http://www.fao.org/fishery/geartype/305/en)

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Acarnus_spp	biomass of Acarnus spp.	kilograms/100m^2	wet_weight_biomass
Acmaea_mitra	biomass of Acmaea mitra	kilograms/100m^2	wet_weight_biomass
Actinaria_sp_1	biomass of Actinaria sp. 1	kilograms/100m^2	wet_weight_biomass
Actinaria_sp_2	biomass of Actinaria sp. 2	kilograms/100m^2	wet_weight_biomass
Actinaria_sp_3	biomass of Actinaria sp. 3	kilograms/100m^2	wet_weight_biomass
Agarum_spp_drift	biomass of Agarum spp.; drift	kilograms/100m^2	wet_weight_biomass
Aglaophenia_spp	biomass of Aglaophenia spp.	kilograms/100m^2	wet_weight_biomass
Agonidae	biomass of Agonidae	kilograms/100m^2	wet_weight_biomass
Agonidae_juvenile	biomass of Agonidae; juvenile	kilograms/100m^2	wet_weight_biomass
Alcyonidium_spp	biomass of Alcyonidium spp.	kilograms/100m^2	wet_weight_biomass
Ammodytes_hexapterus	biomass of Ammodytes hexapterus	kilograms/100m^2	wet_weight_biomass
Ammodytidae_sp	biomass of Ammodytidae sp.	kilograms/100m^2	wet_weight_biomass
Ampelisca_sp	biomass of Ampelisca sp.	kilograms/100m^2	wet_weight_biomass
Amphiophiura_sp	biomass of Amphiophiura sp.	kilograms/100m^2	wet_weight_biomass
Amphipoda	biomass of Amphipoda	kilograms/100m^2	wet_weight_biomass
Amphiura_spp	biomass of Amphiura spp.	kilograms/100m^2	wet_weight_biomass
Ancorinidae	biomass of Ancorinidae	kilograms/100m^2	wet_weight_biomass
Anonyx_spp	biomass of Anonyx spp.	kilograms/100m^2	wet_weight_biomass
Anoplarchus_insignis	biomass of Anoplarchus insignis	kilograms/100m^2	wet_weight_biomass
Anthozoa_sp_1	biomass of Anthozoa sp. 1	kilograms/100m^2	wet_weight_biomass
Anthozoa_sp_2	biomass of Anthozoa sp. 2	kilograms/100m^2	wet_weight_biomass
Anthozoa_sp_3	biomass of Anthozoa sp. 3	kilograms/100m^2	wet_weight_biomass
Aptocyclus_ventricosus	biomass of Aptocyclus ventricosus	kilograms/100m^2	wet_weight_biomass
Arctonoe_vittata	biomass of Arctonoe vittata	kilograms/100m^2	wet_weight_biomass
Argis_sp	biomass of Argis sp.	kilograms/100m^2	wet_weight_biomass
Artedius_lateralis	biomass of Artedius lateralis	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_1	biomass of Ascidiacae sp. 1	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_10	biomass of Ascidiacae sp. 10	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_11	biomass of Ascidiacae sp. 11	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_12	biomass of Ascidiacae sp. 12	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_13	biomass of Ascidiacae sp. 13	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_14	biomass of Ascidiacae sp. 14	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_2	biomass of Ascidiacae sp. 2	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_3	biomass of Ascidiacae sp. 3	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_4	biomass of Ascidiacae sp. 4	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_5	biomass of Ascidiacae sp. 5	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_6	biomass of Ascidiacae sp. 6	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_7	biomass of Ascidiacae sp. 7	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_8	biomass of Ascidiacae sp. 8	kilograms/100m^2	wet_weight_biomass
Ascidiacae_sp_9	biomass of Ascidiacae sp. 9	kilograms/100m^2	wet_weight_biomass
Aspidophoroides_monopterygius	biomass of Aspidophoroides monopterygius	kilograms/100m^2	wet_weight_biomass
Asteroidea_no_ID	biomass of Asteroidea; un-ID	kilograms/100m^2	wet_weight_biomass
Atheresthes_spp	biomass of Atheresthes spp.	kilograms/100m^2	wet_weight_biomass
Axinella_blanca	biomass of Axinella blanca	kilograms/100m^2	wet_weight_biomass
Bathyagonus_alascanus	biomass of Bathyagonus alascanus	kilograms/100m^2	wet_weight_biomass
Bathyagonus_nigripinnis	biomass of Bathyagonus nigripinnis	kilograms/100m^2	wet_weight_biomass
Bathymaster_signatus	biomass of Bathymaster signatus	kilograms/100m^2	wet_weight_biomass
Bathypolypus_spp	biomass of Bathypolypus spp.	kilograms/100m^2	wet_weight_biomass
Bathyraja_parmifera	biomass of Bathyraja parmifera	kilograms/100m^2	wet_weight_biomass
Beringia_sp_drift	biomass of Beringia sp.; drift	kilograms/100m^2	wet_weight_biomass
Blepsias_bilobus	biomass of Blepsias bilobus	kilograms/100m^2	wet_weight_biomass
Boltenia_ovifera	biomass of Boltenia ovifera	kilograms/100m^2	wet_weight_biomass
Boreotrophon_spp	biomass of Boreotrophon spp.	kilograms/100m^2	wet_weight_biomass
Brachiopoda	biomass of Brachiopoda	kilograms/100m^2	wet_weight_biomass
Brachyura_no_ID	biomass of Brachyura; un-ID	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_1	biomass of Bryozoa sp. 1	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_10	biomass of Bryozoa sp. 10	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_11	biomass of Bryozoa sp. 11	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_12	biomass of Bryozoa sp. 12	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_13	biomass of Bryozoa sp. 13	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_2	biomass of Bryozoa sp. 2	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_3	biomass of Bryozoa sp. 3	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_4	biomass of Bryozoa sp. 4	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_5	biomass of Bryozoa sp. 5	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_6	biomass of Bryozoa sp. 6	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_7	biomass of Bryozoa sp. 7	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_8	biomass of Bryozoa sp. 8	kilograms/100m^2	wet_weight_biomass
Bryozoa_sp_9	biomass of Bryozoa sp. 9	kilograms/100m^2	wet_weight_biomass
Buccinidae	biomass of Buccinidae	kilograms/100m^2	wet_weight_biomass
Bugula_sp	biomass of Bugula sp.	kilograms/100m^2	wet_weight_biomass
Calcigorgia_spiculifera	biomass of Calcigorgia spiculifera	kilograms/100m^2	wet_weight_biomass
Callithamnion_sp_drift	biomass of Callithamnion sp.; drift	kilograms/100m^2	wet_weight_biomass
Callophyllis_sp_drift	biomass of Callophyllis sp.; drift	kilograms/100m^2	wet_weight_biomass
Cellaria_sp	biomass of Cellaria sp.	kilograms/100m^2	wet_weight_biomass
Ceramaster_arcticus	biomass of Ceramaster arcticus	kilograms/100m^2	wet_weight_biomass
Ceramaster_patagonicus	biomass of Ceramaster patagonicus	kilograms/100m^2	wet_weight_biomass
Cheiraster_Luidiaster_dawsoni	biomass of Cheiraster (Luidiaster) dawsoni	kilograms/100m^2	wet_weight_biomass
Chionoecetes_bairdi	biomass of Chionoecetes bairdi	kilograms/100m^2	wet_weight_biomass
Chionoecetes_opilio	biomass of Chionoecetes opilio	kilograms/100m^2	wet_weight_biomass
Chirona_evermanni	biomass of Chirona evermanni	kilograms/100m^2	wet_weight_biomass
Chiton_no_ID	biomass of Chiton; un-ID	kilograms/100m^2	wet_weight_biomass
Chlamys_rubida	biomass of Chlamys rubida	kilograms/100m^2	wet_weight_biomass
Chrysaora_melanaster	biomass of Chrysaora melanaster	kilograms/100m^2	wet_weight_biomass
Ciliatocardium_ciliatum	biomass of Ciliatocardium ciliatum	kilograms/100m^2	wet_weight_biomass
Clinocottus_sp	biomass of Clinocottus sp.	kilograms/100m^2	wet_weight_biomass
Club_sponge	biomass of Club sponge	kilograms/100m^2	wet_weight_biomass
Codium_sp_drift	biomass of Codium sp.; drift	kilograms/100m^2	wet_weight_biomass
Colus_sp	biomass of Colus sp.	kilograms/100m^2	wet_weight_biomass
Constantinea_sp_drift	biomass of Constantinea sp.; drift	kilograms/100m^2	wet_weight_biomass
Cornulum_spp	biomass of Cornulum spp.	kilograms/100m^2	wet_weight_biomass
Cottoidea_juvenile	biomass of Cottoidea; juvenile	kilograms/100m^2	wet_weight_biomass
Crangonidae	biomass of Crangonidae	kilograms/100m^2	wet_weight_biomass
Cranopsis_sp	biomass of Cranopsis sp.	kilograms/100m^2	wet_weight_biomass
Crepidula_sp	biomass of Crepidula sp.	kilograms/100m^2	wet_weight_biomass
Crossaster_papposus	biomass of Crossaster papposus	kilograms/100m^2	wet_weight_biomass
Cryptacanthodes_aleutensis	biomass of Cryptacanthodes aleutensis	kilograms/100m^2	wet_weight_biomass
Cryptonatica_spp	biomass of Cryptonatica spp.	kilograms/100m^2	wet_weight_biomass
Crystallichthys_cyclospilus	biomass of Crystallichthys cyclospilus	kilograms/100m^2	wet_weight_biomass
Ctenodiscus_sp	biomass of Ctenodiscus sp.	kilograms/100m^2	wet_weight_biomass
Cucumaria_fallax	biomass of Cucumaria fallax	kilograms/100m^2	wet_weight_biomass
Cucumaria_sp	biomass of Cucumaria sp.	kilograms/100m^2	wet_weight_biomass
Cup_coral_unid	biomass of Cup coral unid.	kilograms/100m^2	wet_weight_biomass
Dendraster_sp	biomass of Dendraster sp.	kilograms/100m^2	wet_weight_biomass
Dendronotus_sp	biomass of Dendronotus sp.	kilograms/100m^2	wet_weight_biomass
Desmarestia_aculeata_drift	biomass of Desmarestia aculeata; drift	kilograms/100m^2	wet_weight_biomass
Desmarestia_spp_drift	biomass of Desmarestia spp.; drift	kilograms/100m^2	wet_weight_biomass
Desmarestia_viridis_drift	biomass of Desmarestia viridis; drift	kilograms/100m^2	wet_weight_biomass
Diaulula_sandiegensis	biomass of Diaulula sandiegensis	kilograms/100m^2	wet_weight_biomass
Diaulula_sp	biomass of Diaulula sp.	kilograms/100m^2	wet_weight_biomass
Diplopteraster_multipes	biomass of Diplopteraster multipes	kilograms/100m^2	wet_weight_biomass
Doridoidea	biomass of Doridoidea	kilograms/100m^2	wet_weight_biomass
Doris_odhneri	biomass of Doris odhneri	kilograms/100m^2	wet_weight_biomass
Doris_sp	biomass of Doris sp.	kilograms/100m^2	wet_weight_biomass
Echinarachnius_parma	biomass of Echinarachnius parma	kilograms/100m^2	wet_weight_biomass
Elassochirus_spp	biomass of Elassochirus spp.	kilograms/100m^2	wet_weight_biomass
End_Latitude	Estimated location of the research vessel when the trawl net reached the bottom OR the net collided with a rock (ending effective trawling)	decimal degrees	lat
End_Longitude	Estimated location of the research vessel when the trawl net reached the bottom OR the net collided with a rock (ending effective trawling)	decimal degrees	lon
Erimacrus_isenbeckii	biomass of Erimacrus isenbeckii	kilograms/100m^2	wet_weight_biomass
Errinopora_sp	biomass of Errinopora sp.	kilograms/100m^2	wet_weight_biomass
Eularia_fistulosa_drift	biomass of Eularia fistulosa; drift	kilograms/100m^2	wet_weight_biomass
Eumicrotremus_orbis	biomass of Eumicrotremus orbis	kilograms/100m^2	wet_weight_biomass
Eupentacta_sp	biomass of Eupentacta sp.	kilograms/100m^2	wet_weight_biomass
Fanellia_compressa	biomass of Fanellia compressa	kilograms/100m^2	wet_weight_biomass
Fish_larvae_no_ID	biomass of Fish larvae; un-ID	kilograms/100m^2	wet_weight_biomass
Flabellina_spp	biomass of Flabellina spp.	kilograms/100m^2	wet_weight_biomass
Flatfish_no_ID	biomass of Flatfish; un-ID	kilograms/100m^2	wet_weight_biomass
Flatfish_no_ID_juvenile	biomass of Flatfish; un-ID; juvenile	kilograms/100m^2	wet_weight_biomass
Flustrellidra_spp	biomass of Flustrellidra spp.	kilograms/100m^2	wet_weight_biomass
Fucus_spp_drift	biomass of Fucus spp.; drift	kilograms/100m^2	wet_weight_biomass
Fusitriton_oregonensis	biomass of Fusitriton oregonensis	kilograms/100m^2	wet_weight_biomass
Gadus_chalcogrammus	biomass of Gadus chalcogrammus	kilograms/100m^2	wet_weight_biomass
Gastropoda_sp_1	biomass of Gastropoda sp. 1	kilograms/100m^2	wet_weight_biomass
Gersemia_sp	biomass of Gersemia sp.	kilograms/100m^2	wet_weight_biomass
Glebocarcinus_oregonensis	biomass of Glebocarcinus oregonensis	kilograms/100m^2	wet_weight_biomass
Glebocarcinus_sp	biomass of Glebocarcinus sp.	kilograms/100m^2	wet_weight_biomass
Gobiesocidae	biomass of Gobiesocidae	kilograms/100m^2	wet_weight_biomass
Gorgonocephalus_eucnemis	biomass of Gorgonocephalus eucnemis	kilograms/100m^2	wet_weight_biomass
Gymnocanthus_galeatus	biomass of Gymnocanthus galeatus	kilograms/100m^2	wet_weight_biomass
Gymnocanthus_tricuspis	biomass of Gymnocanthus tricuspis	kilograms/100m^2	wet_weight_biomass
Halichondria_spp	biomass of Halichondria spp.	kilograms/100m^2	wet_weight_biomass
Halocynthia_aurantium	biomass of Halocynthia aurantium	kilograms/100m^2	wet_weight_biomass
Halosaccion_sp_drift	biomass of Halosaccion sp.; drift	kilograms/100m^2	wet_weight_biomass
Halosydna_brevisetosa	biomass of Halosydna brevisetosa	kilograms/100m^2	wet_weight_biomass
Hemilepidotus_hemilepidotus	biomass of Hemilepidotus hemilepidotus	kilograms/100m^2	wet_weight_biomass
Hemilepidotus_jordani	biomass of Hemilepidotus jordani	kilograms/100m^2	wet_weight_biomass
Hemilepidotus_spinosus	biomass of Hemilepidotus spinosus	kilograms/100m^2	wet_weight_biomass
Hemithiris_psittacea	biomass of Hemithiris psittacea	kilograms/100m^2	wet_weight_biomass
Hemitripterus_bolini	biomass of Hemitripterus bolini	kilograms/100m^2	wet_weight_biomass
Henricia_leviuscula	biomass of Henricia leviuscula	kilograms/100m^2	wet_weight_biomass
Henricia_sp_1	biomass of Henricia sp. 1	kilograms/100m^2	wet_weight_biomass
Henricia_sp_2	biomass of Henricia sp. 2	kilograms/100m^2	wet_weight_biomass
Hermissenda_sp	biomass of Hermissenda sp.	kilograms/100m^2	wet_weight_biomass
Hiatella_arctica	biomass of Hiatella arctica	kilograms/100m^2	wet_weight_biomass
Hippasteria_phrygiana	biomass of Hippasteria phrygiana	kilograms/100m^2	wet_weight_biomass
Hippoglossoides_dubius	biomass of Hippoglossoides dubius	kilograms/100m^2	wet_weight_biomass
Hippoglossoides_elassodon	biomass of Hippoglossoides elassodon	kilograms/100m^2	wet_weight_biomass
Hippoglossus_stenolepis	biomass of Hippoglossus stenolepis	kilograms/100m^2	wet_weight_biomass
Hippolytidae	biomass of Hippolytidae	kilograms/100m^2	wet_weight_biomass
Horned_sculpin_maybe	biomass of Horned sculpin (?)	kilograms/100m^2	wet_weight_biomass
Hyas_spp	biomass of Hyas spp.	kilograms/100m^2	wet_weight_biomass
Hydrozoa	biomass of Hydrozoa	kilograms/100m^2	wet_weight_biomass
Hypsagonus_quadricornis	biomass of Hypsagonus quadricornis	kilograms/100m^2	wet_weight_biomass
Icelinus_borealis	biomass of Icelinus borealis	kilograms/100m^2	wet_weight_biomass
Ionia_sp_drift	biomass of Ionia sp.; drift	kilograms/100m^2	wet_weight_biomass
Island	sampled Island location	unitless	site
Isodictyidae	biomass of Isodictyidae	kilograms/100m^2	wet_weight_biomass
Isopoda	biomass of Isopoda	kilograms/100m^2	wet_weight_biomass
Kallymeniopsis_sp_drift	biomass of Kallymeniopsis sp.; drift	kilograms/100m^2	wet_weight_biomass
Kelp_holdfast_drift	biomass of Kelp holdfast; drift	kilograms/100m^2	wet_weight_biomass
Knobby_Frustralidae	biomass of Knobby Frustralidae	kilograms/100m^2	wet_weight_biomass
Labidochirus_splendescens	biomass of Labidochirus splendescens	kilograms/100m^2	wet_weight_biomass
Labidochirus_spp	biomass of Labidochirus spp.	kilograms/100m^2	wet_weight_biomass
Lacuna_sp	biomass of Lacuna sp.	kilograms/100m^2	wet_weight_biomass
Lamellaria_sp	biomass of Lamellaria sp.	kilograms/100m^2	wet_weight_biomass
Laminaria_longipes_drift	biomass of Laminaria longipes; drift	kilograms/100m^2	wet_weight_biomass
Laminaria_spp_drift	biomass of Laminaria spp.; drift	kilograms/100m^2	wet_weight_biomass
Leodice_valens	biomass of Leodice valens	kilograms/100m^2	wet_weight_biomass
Lepeta_sp	biomass of Lepeta sp.	kilograms/100m^2	wet_weight_biomass
Lepidopsetta_spp	biomass of Lepidopsetta spp.	kilograms/100m^2	wet_weight_biomass
Leptasterias_arctica	biomass of Leptasterias arctica	kilograms/100m^2	wet_weight_biomass
Leptasterias_Hexasterias_alaskensis	biomass of Leptasterias (Hexasterias) alaskensis	kilograms/100m^2	wet_weight_biomass
Leptasterias_Hexasterias_coei_truculenta	biomass of Leptasterias (Hexasterias) coei truculenta	kilograms/100m^2	wet_weight_biomass
Leptasterias_hylodes	biomass of Leptasterias hylodes	kilograms/100m^2	wet_weight_biomass
Leptasterias_nitida	biomass of Leptasterias nitida	kilograms/100m^2	wet_weight_biomass
Leptasterias_spp	biomass of Leptasterias spp.	kilograms/100m^2	wet_weight_biomass
Leptocottus_armatus	biomass of Leptocottus armatus	kilograms/100m^2	wet_weight_biomass
Leptychaster_anomalus	biomass of Leptychaster anomalus	kilograms/100m^2	wet_weight_biomass
Leptychaster_arcticus	biomass of Leptychaster arcticus	kilograms/100m^2	wet_weight_biomass
Leptychaster_pacificus	biomass of Leptychaster pacificus	kilograms/100m^2	wet_weight_biomass
Lethasterias_nanimensis	biomass of Lethasterias nanimensis	kilograms/100m^2	wet_weight_biomass
Leucandra_heathi	biomass of Leucandra heathi	kilograms/100m^2	wet_weight_biomass
Limneria_prolongata	biomass of Limneria prolongata	kilograms/100m^2	wet_weight_biomass
Liparidae	biomass of Liparidae	kilograms/100m^2	wet_weight_biomass
Liparis_cyclopus	biomass of Liparis cyclopus	kilograms/100m^2	wet_weight_biomass
Liparis_sp	biomass of Liparis sp.	kilograms/100m^2	wet_weight_biomass
Lumpenus_sagitta	biomass of Lumpenus sagitta	kilograms/100m^2	wet_weight_biomass
Lycodes_brevipes	biomass of Lycodes brevipes	kilograms/100m^2	wet_weight_biomass
Malacocottus_zonurus	biomass of Malacocottus zonurus	kilograms/100m^2	wet_weight_biomass
Mastocarpus_sp_drift	biomass of Mastocarpus sp.; drift	kilograms/100m^2	wet_weight_biomass
Maxillopoda	biomass of Maxillopoda	kilograms/100m^2	wet_weight_biomass
Metridium_spp	biomass of Metridium spp.	kilograms/100m^2	wet_weight_biomass
Microporina_sp	biomass of Microporina sp.	kilograms/100m^2	wet_weight_biomass
Mikamiella_ruprechtiana	biomass of Mikamiella ruprechtiana	kilograms/100m^2	wet_weight_biomass
Mikamiella_sp_drift	biomass of Mikamiella sp.; drift	kilograms/100m^2	wet_weight_biomass
Modiolus_modiolus	biomass of Modiolus modiolus	kilograms/100m^2	wet_weight_biomass
Molgula_sp	biomass of Molgula sp.	kilograms/100m^2	wet_weight_biomass
Monanchora_pulchra	biomass of Monanchora pulchra	kilograms/100m^2	wet_weight_biomass
Musculus_discors	biomass of Musculus discors	kilograms/100m^2	wet_weight_biomass
Musculus_sp	biomass of Musculus sp.	kilograms/100m^2	wet_weight_biomass
Myoxocephalus_polyacanthocephalus	biomass of Myoxocephalus polyacanthocephalus	kilograms/100m^2	wet_weight_biomass
Myoxocephalus_scorpius	biomass of Myoxocephalus scorpius	kilograms/100m^2	wet_weight_biomass
Naticidae	biomass of Naticidae	kilograms/100m^2	wet_weight_biomass
Nemertea	biomass of Nemertea	kilograms/100m^2	wet_weight_biomass
Neoptilota_asplenioides_drift	biomass of Neoptilota asplenioides; drift	kilograms/100m^2	wet_weight_biomass
Neoptilota_sp_drift	biomass of Neoptilota sp.; drift	kilograms/100m^2	wet_weight_biomass
Neptunea_sp	biomass of Neptunea sp.	kilograms/100m^2	wet_weight_biomass
Nereididae	biomass of Nereididae	kilograms/100m^2	wet_weight_biomass
Nereocystis_luetkeana_drift	biomass of Nereocystis luetkeana; drift	kilograms/100m^2	wet_weight_biomass
Octocorallia	biomass of Octocorallia	kilograms/100m^2	wet_weight_biomass
Octopoda_juvenile	biomass of Octopoda; juvenile	kilograms/100m^2	wet_weight_biomass
Odonthalia_setacea	biomass of Odonthalia setacea	kilograms/100m^2	wet_weight_biomass
Odonthalia_sp_drift	biomass of Odonthalia sp.; drift	kilograms/100m^2	wet_weight_biomass
Odontohenricia_ahearnae	biomass of Odontohenricia ahearnae	kilograms/100m^2	wet_weight_biomass
Odontohenricia_fisheri	biomass of Odontohenricia fisheri	kilograms/100m^2	wet_weight_biomass
Odontohenricia_sp	biomass of Odontohenricia sp.	kilograms/100m^2	wet_weight_biomass
Oenopota_sp	biomass of Oenopota sp.	kilograms/100m^2	wet_weight_biomass
Ophiolimna_sp	biomass of Ophiolimna sp.	kilograms/100m^2	wet_weight_biomass
Ophiopholis_aculeata	biomass of Ophiopholis aculeata	kilograms/100m^2	wet_weight_biomass
Ophiura_sarsii	biomass of Ophiura sarsii	kilograms/100m^2	wet_weight_biomass
Oregonia_gracilis	biomass of Oregonia gracilis	kilograms/100m^2	wet_weight_biomass
Orthasterias_koehleri	biomass of Orthasterias koehleri	kilograms/100m^2	wet_weight_biomass
Pagurus_spp	biomass of Pagurus spp.	kilograms/100m^2	wet_weight_biomass
Palmaria_spp_drift	biomass of Palmaria spp.; drift	kilograms/100m^2	wet_weight_biomass
Pandora_glacialis	biomass of Pandora glacialis	kilograms/100m^2	wet_weight_biomass
Pandora_wardiana	biomass of Pandora wardiana	kilograms/100m^2	wet_weight_biomass
Patinopecten_caurinus	biomass of Patinopecten caurinus	kilograms/100m^2	wet_weight_biomass
Pedicellaster_magister	biomass of Pedicellaster magister	kilograms/100m^2	wet_weight_biomass
Peltodoris_nobilis	biomass of Peltodoris nobilis	kilograms/100m^2	wet_weight_biomass
Peribolaster_biserialis	biomass of Peribolaster biserialis	kilograms/100m^2	wet_weight_biomass
Phycodrys_sp_drift	biomass of Phycodrys sp.; drift	kilograms/100m^2	wet_weight_biomass
Plakina_tanaga	biomass of Plakina tanaga	kilograms/100m^2	wet_weight_biomass
Pleurogrammus_monopterygius	biomass of Pleurogrammus monopterygius	kilograms/100m^2	wet_weight_biomass
Plicifusus_sp	biomass of Plicifusus sp.	kilograms/100m^2	wet_weight_biomass
Plumarella_sp	biomass of Plumarella sp.	kilograms/100m^2	wet_weight_biomass
Pododesmus_macrochisma	biomass of Pododesmus macrochisma	kilograms/100m^2	wet_weight_biomass
Podothecus_accipenserinus	biomass of Podothecus accipenserinus	kilograms/100m^2	wet_weight_biomass
Polychaeta	biomass of Polychaeta	kilograms/100m^2	wet_weight_biomass
Polymastia_sp	biomass of Polymastia sp.	kilograms/100m^2	wet_weight_biomass
Polyneura_sp_drift	biomass of Polyneura sp.; drift	kilograms/100m^2	wet_weight_biomass
Polynoidae	biomass of Polynoidae	kilograms/100m^2	wet_weight_biomass
Polysiphonia_pacifica_drift	biomass of Polysiphonia pacifica; drift	kilograms/100m^2	wet_weight_biomass
Polysiphonia_sp_drift	biomass of Polysiphonia sp.; drift	kilograms/100m^2	wet_weight_biomass
Porifera_sp_1	biomass of Porifera sp. 1	kilograms/100m^2	wet_weight_biomass
Porifera_sp_10	biomass of Porifera sp. 10	kilograms/100m^2	wet_weight_biomass
Porifera_sp_11	biomass of Porifera sp. 11	kilograms/100m^2	wet_weight_biomass
Porifera_sp_12	biomass of Porifera sp. 12	kilograms/100m^2	wet_weight_biomass
Porifera_sp_13	biomass of Porifera sp. 13	kilograms/100m^2	wet_weight_biomass
Porifera_sp_14	biomass of Porifera sp. 14	kilograms/100m^2	wet_weight_biomass
Porifera_sp_15	biomass of Porifera sp. 15	kilograms/100m^2	wet_weight_biomass
Porifera_sp_16	biomass of Porifera sp. 16	kilograms/100m^2	wet_weight_biomass
Porifera_sp_17	biomass of Porifera sp. 17	kilograms/100m^2	wet_weight_biomass
Porifera_sp_18	biomass of Porifera sp. 18	kilograms/100m^2	wet_weight_biomass
Porifera_sp_19	biomass of Porifera sp. 19	kilograms/100m^2	wet_weight_biomass
Porifera_sp_2	biomass of Porifera sp. 2	kilograms/100m^2	wet_weight_biomass
Porifera_sp_20	biomass of Porifera sp. 20	kilograms/100m^2	wet_weight_biomass
Porifera_sp_3	biomass of Porifera sp. 3	kilograms/100m^2	wet_weight_biomass
Porifera_sp_4	biomass of Porifera sp. 4	kilograms/100m^2	wet_weight_biomass
Porifera_sp_4b	biomass of Porifera sp. 4	kilograms/100m^2	wet_weight_biomass
Porifera_sp_5	biomass of Porifera sp. 5	kilograms/100m^2	wet_weight_biomass
Porifera_sp_6	biomass of Porifera sp. 6	kilograms/100m^2	wet_weight_biomass
Porifera_sp_7	biomass of Porifera sp. 7	kilograms/100m^2	wet_weight_biomass
Porifera_sp_8	biomass of Porifera sp. 8	kilograms/100m^2	wet_weight_biomass
Porifera_sp_9	biomass of Porifera sp. 9	kilograms/100m^2	wet_weight_biomass
Poroclinus_rothrocki	biomass of Poroclinus rothrocki	kilograms/100m^2	wet_weight_biomass
Porphyra_sp_drift	biomass of Porphyra sp.; drift	kilograms/100m^2	wet_weight_biomass
Primavelans_insculpta	biomass of Primavelans insculpta	kilograms/100m^2	wet_weight_biomass
Pseudoliomesus_ooides	biomass of Pseudoliomesus ooides	kilograms/100m^2	wet_weight_biomass
Psychrolutes_paradoxus	biomass of Psychrolutes paradoxus	kilograms/100m^2	wet_weight_biomass
Pteraster_marsippus	biomass of Pteraster marsippus	kilograms/100m^2	wet_weight_biomass
Pteraster_militaris	biomass of Pteraster militaris	kilograms/100m^2	wet_weight_biomass
Pteraster_sp	biomass of Pteraster sp.	kilograms/100m^2	wet_weight_biomass
Pteraster_tesselatus	biomass of Pteraster tesselatus	kilograms/100m^2	wet_weight_biomass
Ptilosarcus_gurneyi	biomass of Ptilosarcus gurneyi	kilograms/100m^2	wet_weight_biomass
Ptilota_spp_drift	biomass of Ptilota spp.; drift	kilograms/100m^2	wet_weight_biomass
Pugettia_gracilis	biomass of Pugettia gracilis	kilograms/100m^2	wet_weight_biomass
Pycnogonida	biomass of Pycnogonida	kilograms/100m^2	wet_weight_biomass
Pycnopodia_helianthoides	biomass of Pycnopodia helianthoides	kilograms/100m^2	wet_weight_biomass
Region	A priori region designation: central; east; west; far-west	unitless	region
Rhamphostomella_costata	biomass of Rhamphostomella costata	kilograms/100m^2	wet_weight_biomass
Rhodophyta_sp_1	biomass of Rhodophyta sp. 1	kilograms/100m^2	wet_weight_biomass
Rhodophyta_sp_2	biomass of Rhodophyta sp. 2	kilograms/100m^2	wet_weight_biomass
Rocinela_angustata	biomass of Rocinela angustata	kilograms/100m^2	wet_weight_biomass
Ronquilus_jordani	biomass of Ronquilus jordani	kilograms/100m^2	wet_weight_biomass
Ronquil_no_ID	biomass of Ronquil; un-ID	kilograms/100m^2	wet_weight_biomass
Rossia_pacifica	biomass of Rossia pacifica	kilograms/100m^2	wet_weight_biomass
Sabellidae	biomass of Sabellidae	kilograms/100m^2	wet_weight_biomass
Saccharina_sp_drift	biomass of Saccharina sp.; drift	kilograms/100m^2	wet_weight_biomass
Sample	sample identifier	unitless	sample
Sarritor_frenatus	biomass of Sarritor frenatus	kilograms/100m^2	wet_weight_biomass
Scapula_sponge	biomass of Scapula sponge	kilograms/100m^2	wet_weight_biomass
Schizymenia_pacifica_drift	biomass of Schizymenia pacifica; drift	kilograms/100m^2	wet_weight_biomass
Schizymenia_sp_drift	biomass of Schizymenia sp.; drift	kilograms/100m^2	wet_weight_biomass
Sculpin_no_ID	biomass of Sculpin; un-ID	kilograms/100m^2	wet_weight_biomass
Sebastes_alutus	biomass of Sebastes alutus	kilograms/100m^2	wet_weight_biomass
Sebastes_ciliatus	biomass of Sebastes ciliatus	kilograms/100m^2	wet_weight_biomass
Sergeant_poacher	biomass of Sergeant poacher	kilograms/100m^2	wet_weight_biomass
Serripes_groenlandicus	biomass of Serripes groenlandicus	kilograms/100m^2	wet_weight_biomass
Similipecten_greenlandicus	biomass of Similipecten greenlandicus	kilograms/100m^2	wet_weight_biomass
Sipuncula_sp_1	biomass of Sipuncula sp. 1	kilograms/100m^2	wet_weight_biomass
Sipuncula_sp_2	biomass of Sipuncula sp. 2	kilograms/100m^2	wet_weight_biomass
Solariella_spp	biomass of Solariella spp.	kilograms/100m^2	wet_weight_biomass
Solaster_spp	biomass of Solaster spp.	kilograms/100m^2	wet_weight_biomass
Start_Date_UTM	Starting time for each trawl event; UTC	unitless	date
Start_Latitude	Estimated location of the research vessel when the trawl net reached the bottom	decimal degrees	lat
Start_Longitude	Estimated location of the research vessel when the trawl net reached the bottom	decimal degrees	lon
Stegocephalus_sp	biomass of Stegocephalus sp.	kilograms/100m^2	wet_weight_biomass
Stomphia_sp	biomass of Stomphia sp.	kilograms/100m^2	wet_weight_biomass
Strongylocentrotus_spp	biomass of Strongylocentrotus spp.	kilograms/100m^2	wet_weight_biomass
Styela_rustica	biomass of Styela rustica	kilograms/100m^2	wet_weight_biomass
Stylaster_campylecus	biomass of Stylaster campylecus	kilograms/100m^2	wet_weight_biomass
Suberites_spp	biomass of Suberites spp.	kilograms/100m^2	wet_weight_biomass
Subsample_Factor	Subsample indicator. Value of 2 indicates that half of the trawl contents were taken for biomass and count measurements.	unitless	samp_fraction_denom
Tachyrhynchus_sp	biomass of Tachyrhynchus sp.	kilograms/100m^2	wet_weight_biomass
Terrestrial_debris	biomass of Terrestrial debris	kilograms/100m^2	wet_weight_biomass
Thalassiophyllum_sp_drift	biomass of Thalassiophyllum sp.; drift	kilograms/100m^2	wet_weight_biomass
Tokidadendron_bullata_drift	biomass of Tokidadendron bullata; drift	kilograms/100m^2	wet_weight_biomass
Tonicella_sp	biomass of Tonicella sp.	kilograms/100m^2	wet_weight_biomass
Trawl_Area	Effective trawling area; trawl distance multiplied by the trawling width of the net (2.26 m)	meters^2	surface_area
Trawl_Distance_m	Effective trawling distance based on estimates of trawling start/end locations	meters	no_bcodmo_term
Triglops_macellus	biomass of Triglops macellus	kilograms/100m^2	wet_weight_biomass
Triglops_pingelii	biomass of Triglops pingelii	kilograms/100m^2	wet_weight_biomass
Triopha_catalinae	biomass of Triopha catalinae	kilograms/100m^2	wet_weight_biomass
Tripoplax_trifida	biomass of Tripoplax trifida	kilograms/100m^2	wet_weight_biomass
Tritonia_spp	biomass of Tritonia spp.	kilograms/100m^2	wet_weight_biomass
Tube_worm_no_ID	biomass of Tube worm; un-ID	kilograms/100m^2	wet_weight_biomass
Tunicata_sp_1	biomass of Tunicata sp. 1	kilograms/100m^2	wet_weight_biomass
Tunicata_sp_1b	biomass of Tunicata sp. 1b	kilograms/100m^2	wet_weight_biomass
Turnerella_mertensiana	biomass of Turnerella mertensiana	kilograms/100m^2	wet_weight_biomass
Ulva_spp_drift	biomass of Ulva spp.; drift	kilograms/100m^2	wet_weight_biomass
Urticina_sp	biomass of Urticina sp.	kilograms/100m^2	wet_weight_biomass
Velutina_spp	biomass of Velutina spp.	kilograms/100m^2	wet_weight_biomass
Volutopsius_sp	biomass of Volutopsius sp.	kilograms/100m^2	wet_weight_biomass
Vulcanella_sp	biomass of Vulcanella sp.	kilograms/100m^2	wet_weight_biomass

Database

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Dataset: Trawl biomass