DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx
Gulf menhaden (Brevoortia patronus) support the largest fishery by yield in the Gulf of Mexico (GoM) and are a key forage species for many marine predators. While menhaden stock assessments indicated that overfishing was not likely to have occurred in the past, concerns have been raised regarding th...
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ftunivfreestate:oai:figshare.com:article/21825807 2023-05-15T18:06:06+02:00 DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx Igal Berenshtein (585738) Skyler R. Sagarese (14335788) Matthew V. Lauretta (8201877) Amy M. Schueller (2939577) David D. Chagaris (9045998) 2023-01-06T04:52:29Z https://doi.org/10.3389/fmars.2022.935324.s001 unknown https://figshare.com/articles/dataset/DataSheet_1_Identifying_trade-offs_and_reference_points_in_support_of_ecosystem_approaches_to_managing_Gulf_of_Mexico_menhaden_docx/21825807 doi:10.3389/fmars.2022.935324.s001 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ecosystem-based fisheries management forage fish Gulf menhaden trophic interactions fishing mortality bycatch Dataset 2023 ftunivfreestate https://doi.org/10.3389/fmars.2022.935324.s001 2023-01-13T01:01:01Z Gulf menhaden (Brevoortia patronus) support the largest fishery by yield in the Gulf of Mexico (GoM) and are a key forage species for many marine predators. While menhaden stock assessments indicated that overfishing was not likely to have occurred in the past, concerns have been raised regarding the possible effects of menhaden fishing on their predators. In this study, we used a US Gulfwide Ecopath with Ecosim (EwE) model to explore the predicted effects of increased menhaden harvest on the GoM ecosystem and focused our analyses on Gulf menhaden predators. Key menhaden predators identified included king mackerel (Scomberomorus cavalla), Spanish mackerel (Scomberomorus maculatus), sea trout (Cynoscion spp.), red drum (Sciaenops ocellatus), and pelagic coastal piscivores [e.g., bluefish (Pomatomus saltatrix)]. As expected, these predators exhibited reduced biomass in response to increased Gulf menhaden harvest, with a predicted 11% decrease in predator biomass at simulated fishing levels near historical highs. Our results indicate strong relationships between the effects of menhaden fishing and the predator fishing mortality for king mackerel and intermediate relationships for Spanish mackerel, blacktip shark (Carcharhinus limbatus), red drum, large coastal sharks, and pelagic coastal piscivores. Biomass of predator groups such as demersal coastal invertebrate feeders [e.g., drums and croakers (Sciaenidae)] are more affected by menhaden harvest (through trophodynamics interactions and bycatch removal) compared to the isolated effect of their fishing mortality. For almost all the groups examined in the trade-off analysis, with the exception of sea trout, current biomass (2016) was higher than their target biomass representing 75% of their biomass at maximum sustainable yield. In comparison to the time series of fishing mortality rates estimated by the most recent Gulf menhaden stock assessment, the mean ecological reference point (ERP) of 0.862 was exceeded in all but 1 year from 1977 to 2007; however, neither ... Dataset Red drum Sciaenops ocellatus KovsieScholar Repository (University of the Free State - UFS UV) |
institution |
Open Polar |
collection |
KovsieScholar Repository (University of the Free State - UFS UV) |
op_collection_id |
ftunivfreestate |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ecosystem-based fisheries management forage fish Gulf menhaden trophic interactions fishing mortality bycatch |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ecosystem-based fisheries management forage fish Gulf menhaden trophic interactions fishing mortality bycatch Igal Berenshtein (585738) Skyler R. Sagarese (14335788) Matthew V. Lauretta (8201877) Amy M. Schueller (2939577) David D. Chagaris (9045998) DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ecosystem-based fisheries management forage fish Gulf menhaden trophic interactions fishing mortality bycatch |
description |
Gulf menhaden (Brevoortia patronus) support the largest fishery by yield in the Gulf of Mexico (GoM) and are a key forage species for many marine predators. While menhaden stock assessments indicated that overfishing was not likely to have occurred in the past, concerns have been raised regarding the possible effects of menhaden fishing on their predators. In this study, we used a US Gulfwide Ecopath with Ecosim (EwE) model to explore the predicted effects of increased menhaden harvest on the GoM ecosystem and focused our analyses on Gulf menhaden predators. Key menhaden predators identified included king mackerel (Scomberomorus cavalla), Spanish mackerel (Scomberomorus maculatus), sea trout (Cynoscion spp.), red drum (Sciaenops ocellatus), and pelagic coastal piscivores [e.g., bluefish (Pomatomus saltatrix)]. As expected, these predators exhibited reduced biomass in response to increased Gulf menhaden harvest, with a predicted 11% decrease in predator biomass at simulated fishing levels near historical highs. Our results indicate strong relationships between the effects of menhaden fishing and the predator fishing mortality for king mackerel and intermediate relationships for Spanish mackerel, blacktip shark (Carcharhinus limbatus), red drum, large coastal sharks, and pelagic coastal piscivores. Biomass of predator groups such as demersal coastal invertebrate feeders [e.g., drums and croakers (Sciaenidae)] are more affected by menhaden harvest (through trophodynamics interactions and bycatch removal) compared to the isolated effect of their fishing mortality. For almost all the groups examined in the trade-off analysis, with the exception of sea trout, current biomass (2016) was higher than their target biomass representing 75% of their biomass at maximum sustainable yield. In comparison to the time series of fishing mortality rates estimated by the most recent Gulf menhaden stock assessment, the mean ecological reference point (ERP) of 0.862 was exceeded in all but 1 year from 1977 to 2007; however, neither ... |
format |
Dataset |
author |
Igal Berenshtein (585738) Skyler R. Sagarese (14335788) Matthew V. Lauretta (8201877) Amy M. Schueller (2939577) David D. Chagaris (9045998) |
author_facet |
Igal Berenshtein (585738) Skyler R. Sagarese (14335788) Matthew V. Lauretta (8201877) Amy M. Schueller (2939577) David D. Chagaris (9045998) |
author_sort |
Igal Berenshtein (585738) |
title |
DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx |
title_short |
DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx |
title_full |
DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx |
title_fullStr |
DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx |
title_full_unstemmed |
DataSheet_1_Identifying trade-offs and reference points in support of ecosystem approaches to managing Gulf of Mexico menhaden.docx |
title_sort |
datasheet_1_identifying trade-offs and reference points in support of ecosystem approaches to managing gulf of mexico menhaden.docx |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2022.935324.s001 |
genre |
Red drum Sciaenops ocellatus |
genre_facet |
Red drum Sciaenops ocellatus |
op_relation |
https://figshare.com/articles/dataset/DataSheet_1_Identifying_trade-offs_and_reference_points_in_support_of_ecosystem_approaches_to_managing_Gulf_of_Mexico_menhaden_docx/21825807 doi:10.3389/fmars.2022.935324.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2022.935324.s001 |
_version_ |
1766177677550551040 |