Plankton food webs in the oligotrophic Gulf of Mexico spawning grounds of Atlantic Bluefin tuna

Stukel, Michael R; Gerard, Trika; Kelly, Thomas B; Knapp, Angela N; Laiz-Carrión, Raúl; Lamkin, John T; Landry, Michael R; Malca, Estrella; Selph, Karen E; Shiroza, Akihiro; Shropshire, Taylor A; Swalethorp, Rasmus

doi:10.1093/plankt/fbab023

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

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Plankton food webs in the oligotrophic Gulf of Mexico spawning grounds of Atlantic Bluefin tuna

2021
By Stukel, Michael R ; Gerard, Trika ; Kelly, Thomas B ; ...
Source: Journal of Plankton Research, 2021; fbab023

[PDF-1.50 MB]

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Journal Title:

Journal of Plankton Research
Personal Author:

Stukel, Michael R ; Gerard, Trika ; Kelly, Thomas B ; Knapp, Angela N ; Laiz-Carrión, Raúl ; ... More +

Stukel, Michael R ; Gerard, Trika ; Kelly, Thomas B ; Knapp, Angela N ; Laiz-Carrión, Raúl ; Lamkin, John T ; Landry, Michael R ; Malca, Estrella ; Selph, Karen E ; Shiroza, Akihiro ; Shropshire, Taylor A ; Swalethorp, Rasmus Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; NMF (National Marine Fisheries Service) ; NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) ; JIMAR (Joint Institute for Marine and Atmospheric Research) ; ... More +

OAR (Oceanic and Atmospheric Research) ; NMF (National Marine Fisheries Service) ; NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) ; JIMAR (Joint Institute for Marine and Atmospheric Research) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies) ; CIMEAS (Cooperative Institute for Marine, Earth, and Atmospheric Systems) Less -
Description:

We used linear inverse ecosystem modeling techniques to assimilate data from extensive Lagrangian field experiments into a mass-balance constrained food web for the Gulf of Mexico open-ocean ecosystem. This region is highly oligotrophic, yet Atlantic bluefin tuna (ABT) travel long distances from feeding grounds in the North Atlantic to spawn there. Our results show extensive nutrient regeneration fueling primary productivity (mostly by cyanobacteria and other picophytoplankton) in the upper euphotic zone. The food web is dominated by the microbial loop (>70% of net primary productivity is respired by heterotrophic bacteria and protists that feed on them). By contrast, herbivorous food web pathways from phytoplankton to metazoan zooplankton process <10% of the net primary production in the mixed layer. Nevertheless, ABT larvae feed preferentially on podonid cladocerans and other suspension-feeding zooplankton, which in turn derive much of their nutrition from nano- and micro-phytoplankton (mixotrophic flagellates, and to a lesser extent, diatoms). This allows ABT larvae to maintain a comparatively low trophic level (~4.2 for preflexion and postflexion larvae), which increases trophic transfer from phytoplankton to larval fish.
Keywords:

[+]

Calanoida Ecology Fishes Larvae Plankton
Source:

Journal of Plankton Research, 2021; fbab023
DOI:

https://doi.org/10.1093/plankt/fbab023
Document Type:

Journal Article
Funding:

Grant no. NA15OAR4320071 ; Grant no. NA16NMF4320058 ; Grant no. NA15OAR4320064

Grant no. NA15OAR4320071 ; Grant no. NA16NMF4320058 ; Grant no. NA15OAR4320064 Less -
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:ca901a89deb800bc05803359fb2d1c2d1e67d504249ac056fc54a694d81b949d
Download URL:

https://repository.library.noaa.gov/view/noaa/34224/noaa_34224_DS1.pdf
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Plankton food webs in the oligotrophic Gulf of Mexico spawning grounds of Atlantic Bluefin tuna

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