Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean
This study examined diversity and habitat characteristics for bycatch assemblages in two different types of fishing (drifting fish aggregating devices sets and sets made on school of tunas) in the eastern Pacific Ocean (20°S–30°N and 70°–150°W) between 2005 and 2011 using biodiversity metrics and Ge...
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doaj-2442a987aaa74d7083d7a9d05570f8ad2020-11-24T23:43:23ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452017-08-01410.3389/fmars.2017.00265280994Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific OceanNerea Lezama-Ochoa0Hilario Murua1Martin Hall2Marlon Román3Jon Ruiz4Nick Vogel5Ainhoa Caballero6Igor Sancristobal7Marine Research Unit, AZTI PasaiaPasaia, SpainMarine Research Unit, AZTI PasaiaPasaia, SpainInter-American Tropical Tuna CommisionLa Jolla, CA, United StatesInter-American Tropical Tuna CommisionLa Jolla, CA, United StatesMarine Research Unit, AZTI PasaiaPasaia, SpainInter-American Tropical Tuna CommisionLa Jolla, CA, United StatesMarine Research Unit, AZTI PasaiaPasaia, SpainMarine Research Unit, AZTI PasaiaPasaia, SpainThis study examined diversity and habitat characteristics for bycatch assemblages in two different types of fishing (drifting fish aggregating devices sets and sets made on school of tunas) in the eastern Pacific Ocean (20°S–30°N and 70°–150°W) between 2005 and 2011 using biodiversity metrics and Generalized Additive Models. Bycatch information was based on data collected by onboard observers covering more than 80% of the purse seine fishing trips. Our results suggest that diversity and habitat characteristics of the bycatch assemblages differ depending of the fishing mode. Thus, diversity was mostly explained by area and set type; being higher in fish aggregating devices (FAD) sets than School sets. Concretely, diversity seems to be directly related with the equatorial upwelling and the front system in FAD sets and with the Costa Rica Dome and the coastal upwelling of Panama induced by wind jets in School sets. Among environmental variables, temperature and chlorophyll were the most important predictors to describe the diversity of the bycatch assemblages. This work has investigated multiple indicators related to the bycatch assemblages and their habitat, which could be helpful for the development of an Ecosystem Approach to Fishery Management (EAFM).http://journal.frontiersin.org/article/10.3389/fmars.2017.00265/fullbycatchspecies diversitypurse seineeastern Pacific Oceanecosystem approach to fishery management |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nerea Lezama-Ochoa Hilario Murua Martin Hall Marlon Román Jon Ruiz Nick Vogel Ainhoa Caballero Igor Sancristobal |
spellingShingle |
Nerea Lezama-Ochoa Hilario Murua Martin Hall Marlon Román Jon Ruiz Nick Vogel Ainhoa Caballero Igor Sancristobal Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean Frontiers in Marine Science bycatch species diversity purse seine eastern Pacific Ocean ecosystem approach to fishery management |
author_facet |
Nerea Lezama-Ochoa Hilario Murua Martin Hall Marlon Román Jon Ruiz Nick Vogel Ainhoa Caballero Igor Sancristobal |
author_sort |
Nerea Lezama-Ochoa |
title |
Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean |
title_short |
Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean |
title_full |
Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean |
title_fullStr |
Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean |
title_full_unstemmed |
Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean |
title_sort |
biodiversity and habitat characteristics of the bycatch assemblages in fish aggregating devices (fads) and school sets in the eastern pacific ocean |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Marine Science |
issn |
2296-7745 |
publishDate |
2017-08-01 |
description |
This study examined diversity and habitat characteristics for bycatch assemblages in two different types of fishing (drifting fish aggregating devices sets and sets made on school of tunas) in the eastern Pacific Ocean (20°S–30°N and 70°–150°W) between 2005 and 2011 using biodiversity metrics and Generalized Additive Models. Bycatch information was based on data collected by onboard observers covering more than 80% of the purse seine fishing trips. Our results suggest that diversity and habitat characteristics of the bycatch assemblages differ depending of the fishing mode. Thus, diversity was mostly explained by area and set type; being higher in fish aggregating devices (FAD) sets than School sets. Concretely, diversity seems to be directly related with the equatorial upwelling and the front system in FAD sets and with the Costa Rica Dome and the coastal upwelling of Panama induced by wind jets in School sets. Among environmental variables, temperature and chlorophyll were the most important predictors to describe the diversity of the bycatch assemblages. This work has investigated multiple indicators related to the bycatch assemblages and their habitat, which could be helpful for the development of an Ecosystem Approach to Fishery Management (EAFM). |
topic |
bycatch species diversity purse seine eastern Pacific Ocean ecosystem approach to fishery management |
url |
http://journal.frontiersin.org/article/10.3389/fmars.2017.00265/full |
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