Data · collection
Fish fork length data from CGOA trawl cruises conducted from 1997-2004
Listed in NASA Earthdata CMR
Fish fork length data were collected from the towing of gillnets, midwater trawls and Nordic 264 surface rope trawls.
Description
Sampling was conducted during the period 10 October 1997 to 17 September 2004 during cruises onboard the Pandalus. The survey area included the coastal waters of the Gulf of Alaska.
The classification of salmon lifestages follows information from Nancy Davis and from her high seas catch (lengths and ages) data: coho <375mm = juvenile coho >375mm = maturing pink <375mm = juvenile pink >375mm = maturing The categories for sockeye, chinook, and chum are more difficult to determine and are based on length frequencies as well as age/length data from the high seas cruise of Nancy Davis. sockeye <235mm = juvenile sockeye >235mm = immature/maturing The minimum fork length of a sockeye (ocean age 1) was 231mm in Nancy Davis' high seas data (2001); most were ~300mm chinook>300mm = immature/maturing chum<270mm = juvenile chum>270mm = immature/maturing The minimum fork length of a chum (ocean age 1) was 280mm in Nancy Davis' high seas data (2001); most were ~300-350mm.
Links
Get the data
- globec.whoi.edu /jg/serv/globec/nep/cgoa/ltop/trawl_catch_fishlen.html0%7Bdir=g… ↗
Fish fork length data collected from trawls in the coastal Gulf of Alaska 1997 - 2004.
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214594392-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214594392-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Fisheries · GILLNETS · Marine Ecosystems · MIDWATER TRAWLS · Ray Finned Fishes · R/V PANDALUS · Salmons Trouts · TRAWL
Provenance · 1 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214594392-SCIOPS | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:gillnets | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:midwater-trawls | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:trawl | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates/fish/ray-finned-fishes | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates/fish/ray-finned-fishes/salmons-trouts | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/marine-ecosystems | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/aquatic-sciences/fisheries | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:r-v-pandalus | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |