Pan-Arctic suitable habitat model for Greenland halibut

Vihtakari, Mikko; Hordoir, Robinson; Treble, Margaret; Bryan, Meaghan D; Elvarsson, Bjarki; Nogueira, Adriana; Hallfredsson, Elvar H; Christiansen, Jørgen Schou; Albert, Ole Thomas

doi:10.1093/icesjms/fsab007

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Pan-Arctic suitable habitat model for Greenland halibut

2021
By Vihtakari, Mikko ; Hordoir, Robinson ; Treble, Margaret ; ...
Source: ICES Journal of Marine Science (2021), 78(4) 1340 – 1356

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Journal Title:

ICES Journal of Marine Science
Personal Author:

Vihtakari, Mikko ; Hordoir, Robinson ; Treble, Margaret ; Bryan, Meaghan D ; Elvarsson, Bjarki ; ... More +

Vihtakari, Mikko ; Hordoir, Robinson ; Treble, Margaret ; Bryan, Meaghan D ; Elvarsson, Bjarki ; Nogueira, Adriana ; Hallfredsson, Elvar H ; Christiansen, Jørgen Schou ; Albert, Ole Thomas Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center) Less -
Description:

Deep-sea marine fishes support important fisheries but estimates of their distributions are often incomplete as the data behind them may reflect fishing practices, access rights, or political boundaries, rather than actual geographic distributions. We use a simple suitable habitat model based on bottom depth, temperature, and salinity to estimate the potential distribution of Greenland halibut (Reinhardtius hippoglossoides). A large presence-only dataset is examined using multivariate kernel densities to define environmental envelopes, which we link to spatial distribution using a pan-Arctic oceanographic model. Occurrences generally fit the model well, although there were gaps in the predicted circum-Arctic distribution likely due to limited survey activity in many of the ice-covered seas around the Arctic Ocean. Bottom temperature and depth were major factors defining model fit to observations, but other factors, such as ecosystem interactions and larval drift could also influence distribution. Model predictions can be tested by increasing sampling effort in poorly explored regions and by studying the connectivity of putative populations. While abundances of Greenland halibut in the High Arctic are currently low, some areas are predicted to be suitable habitat for this species, suggesting that on-going sea-ice melt may lead to fisheries expansion into new areas.
Keywords:

[+]

Biogeography Fisheries Greenland Halibut Habitat Suitability Index Models Distribution Environmental Niches Oceanographic Models Reinhardtius Hippoglossoides
Source:

ICES Journal of Marine Science (2021), 78(4) 1340 – 1356
DOI:

https://doi.org/10.1093/icesjms/fsab007
Document Type:

Journal Article
Place as Subject:

Arctic Ocean
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CC BY
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Submitted
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urn:sha256:d38ef0cab0da4f09678cfc5bae56b7cec035c6b2b7de529da14ae01f0f73d331
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https://repository.library.noaa.gov/view/noaa/42518/noaa_42518_DS1.pdf
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