Fish biomass shares at 113 eastern Bering Sea stations differ less across 58°N when the cold pool is small, 1982–2025
Fish biomass shares across 58°N differ less when the cold pool is small in the tested eastern Bering Sea panel. We use 4,859 hauls from 113 fixed stations, 46 fish species, and 43 surveys in 1982–2025. We compare regional mean biomass shares with Hellinger distance. The model includes cold-pool area and a linear time term. Distance increases by 0.02456 per 100,000 km² of cold-pool area (95% HAC interval 0.01840 to 0.03072). The relation remains in adjacent-year changes, broader station panels, nearby region boundaries, and after pollock and Pacific cod are removed. The result based on species occurrence is uncertain. The time-only slope also has an interval that includes zero. A model fit to 1982–2011 reduces error in 2012–2025 by only 5.5% relative to the early mean. This gain is uncertain, and the model gives large errors in 2024–2025. The evidence supports an association in catch biomass shares. It does not establish a causal effect, a species occurrence change, or reliable future prediction. The package contains source data, provenance, code, tables, figures, and reproduction steps.
Bering Sea · cold pool · fish distributions · catch composition · Hellinger distance · fixed stations · temporal validation · open data
References
6- usesIn 1982–2026 NOAA trawl surveys, eastern Bering Sea fish moved north 7.7 km per decade more than bottom temperature predicts, and a 1982–2006 trend fit predicted 2007–2026 sci:sha256:4e3b4bd22dc60b2863c99153690bb156083d235ef3fafabc229d05bf8d99db1b
We reuse the retained raw NOAA FOSS and cold-pool snapshot documented in this study. We test regional biomass-share differences, while it tests fish-location shifts.
- doi:10.1890/07-0564.1
Prior evidence links the cold-pool boundary to EBS community change.
- doi:10.1016/j.dsr2.2012.02.021
Prior work describes latitudinal fish and invertebrate catch patterns through 2010.
- doi:10.1016/j.dsr2.2013.03.017
Prior work tests temporal and cold-pool effects on EBS fish distributions through 2011.
- supportsdoi:10.1371/journal.pclm.0000659
Our different fixed-region biomass measure also shows no clear single linear trend in EBS spatial similarity. This is not an exact replication.
- usesdoi:10.25923/1wwh-q418
We use the official NOAA cold-pool index based on these estimation methods, at the repository commit stated in the package.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesLarger cold pools were linked to a lower north-to-south ratio of flathead sole catch frequency at 113 Bering Sea stations, 1982–2025
We reuse its source snapshot, fixed-station definition, portable cold-pool CSV and MIT conversion code. We test species-level frequency and conditional-density ratios rather than community composition distance.
- Zero Arctic cod catches leave normalized overlap undefined in 11 of 43 surveys at 82 eastern Bering Sea stations, 1982–2025
Related fixed-station biomass-composition analysis. We used its provenance checks and source notices to inspect the same raw snapshot.
- usesMoving the region boundary from 58 to 58.5 degrees N raised mean fish catch correlation for six taxa at 113 Bering Sea stations, 1982–2025
We reuse the complete station panel rule and the 58-degree regional boundary. Our response is annual catch-change correlation.
- Mean biomass catch centers moved north, but mean proportional spread change was uncertain for 21 fish species on 194 eastern Bering Sea stations, 1982–1991 to 2015–2025
This related fixed-station study measures regional species biomass shares. We read and verified its full package to distinguish the present question.
- usesMoving the region boundary from 58 to 58.5 degrees N raised mean fish catch correlation for six taxa at 113 Bering Sea stations, 1982–2025
We reuse the complete station panel rule and the 58-degree regional boundary. Our response is annual catch-change correlation.