Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)

The Argentine hake Merluccius hubbsi is one of the main commercial resources of the Southwest Atlantic region, with a reported catch of 259,202 tons in 2014. Hake recruitment shows high interannual variability, yet the environmental and biological factors that influence reproduction are not fully un...

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Detalles Bibliográficos
Publicado: 2016
Materias:
Merluccius hubbsi
MODIS
Ocean color
SeaWiFS
Time series
Band structure
Chlorophyll
Climate change
Color
Radiometers
Satellite imagery
Uncertainty analysis
Chlorophyll concentration
High spatial resolution
Interannual variability
SeaWiFs
Southwestern Atlantic Ocean
Oceanography
Rexea solandri
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00344257_v177_n_p1_Marrari
http://hdl.handle.net/20.500.12110/paper_00344257_v177_n_p1_Marrari
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00344257_v177_n_p1_Marrari
record_format dspace
spelling paper:paper_00344257_v177_n_p1_Marrari2023-06-08T15:00:39Z Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean) Merluccius hubbsi MODIS Ocean color SeaWiFS Time series Band structure Chlorophyll Climate change Color Radiometers Satellite imagery Time series Uncertainty analysis Chlorophyll concentration High spatial resolution Interannual variability Merluccius hubbsi MODIS Ocean color SeaWiFs Southwestern Atlantic Ocean Oceanography Merluccius hubbsi Rexea solandri The Argentine hake Merluccius hubbsi is one of the main commercial resources of the Southwest Atlantic region, with a reported catch of 259,202 tons in 2014. Hake recruitment shows high interannual variability, yet the environmental and biological factors that influence reproduction are not fully understood. The increasing availability of ocean color data presents an opportunity to investigate a wide variety of fundamental topics including ocean primary productivity, climate change, and fisheries, among others. However, differences in the timing, length, and radiometer characteristics of the different missions result in a number of relatively short data records that are not suitable, individually, for the analysis of interdecadal changes. The combination of these datasets to produce longer time series of consistent data is essential for interpreting variability and trends in key parameters. We analyzed almost 5 years of high spatial resolution overlapping data from the SeaWiFS and MODIS Aqua sensors in the Southwestern Atlantic Ocean to assess differences in chlorophyll concentration retrievals, estimate uncertainties, and develop corrections. Data from SeaWiFS (1997-2006) and corrected MODIS (2007-2015) were analyzed jointly as a >. 17-year time series of consistent and continuous chlorophyll concentration data, the longest record to date in the region. Trend analyses performed in the main spawning and nursery areas of M. hubbsi revealed significant increases in chlorophyll concentrations since 1997. The environmental factors likely influencing the observed changes and the potential implications for recruitment of M. hubbsi are discussed. © 2016 The Authors Published by Elsevier Inc. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00344257_v177_n_p1_Marrari http://hdl.handle.net/20.500.12110/paper_00344257_v177_n_p1_Marrari
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Merluccius hubbsi
MODIS
Ocean color
SeaWiFS
Time series
Band structure
Chlorophyll
Climate change
Color
Radiometers
Satellite imagery
Time series
Uncertainty analysis
Chlorophyll concentration
High spatial resolution
Interannual variability
Merluccius hubbsi
MODIS
Ocean color
SeaWiFs
Southwestern Atlantic Ocean
Oceanography
Merluccius hubbsi
Rexea solandri
spellingShingle Merluccius hubbsi
MODIS
Ocean color
SeaWiFS
Time series
Band structure
Chlorophyll
Climate change
Color
Radiometers
Satellite imagery
Time series
Uncertainty analysis
Chlorophyll concentration
High spatial resolution
Interannual variability
Merluccius hubbsi
MODIS
Ocean color
SeaWiFs
Southwestern Atlantic Ocean
Oceanography
Merluccius hubbsi
Rexea solandri
Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)
topic_facet Merluccius hubbsi
MODIS
Ocean color
SeaWiFS
Time series
Band structure
Chlorophyll
Climate change
Color
Radiometers
Satellite imagery
Time series
Uncertainty analysis
Chlorophyll concentration
High spatial resolution
Interannual variability
Merluccius hubbsi
MODIS
Ocean color
SeaWiFs
Southwestern Atlantic Ocean
Oceanography
Merluccius hubbsi
Rexea solandri
description The Argentine hake Merluccius hubbsi is one of the main commercial resources of the Southwest Atlantic region, with a reported catch of 259,202 tons in 2014. Hake recruitment shows high interannual variability, yet the environmental and biological factors that influence reproduction are not fully understood. The increasing availability of ocean color data presents an opportunity to investigate a wide variety of fundamental topics including ocean primary productivity, climate change, and fisheries, among others. However, differences in the timing, length, and radiometer characteristics of the different missions result in a number of relatively short data records that are not suitable, individually, for the analysis of interdecadal changes. The combination of these datasets to produce longer time series of consistent data is essential for interpreting variability and trends in key parameters. We analyzed almost 5 years of high spatial resolution overlapping data from the SeaWiFS and MODIS Aqua sensors in the Southwestern Atlantic Ocean to assess differences in chlorophyll concentration retrievals, estimate uncertainties, and develop corrections. Data from SeaWiFS (1997-2006) and corrected MODIS (2007-2015) were analyzed jointly as a >. 17-year time series of consistent and continuous chlorophyll concentration data, the longest record to date in the region. Trend analyses performed in the main spawning and nursery areas of M. hubbsi revealed significant increases in chlorophyll concentrations since 1997. The environmental factors likely influencing the observed changes and the potential implications for recruitment of M. hubbsi are discussed. © 2016 The Authors Published by Elsevier Inc.
title Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)
title_short Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)
title_full Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)
title_fullStr Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)
title_full_unstemmed Trends and variability in extended ocean color time series in the main reproductive area of the Argentine hake, Merluccius hubbsi (Southwestern Atlantic Ocean)
title_sort trends and variability in extended ocean color time series in the main reproductive area of the argentine hake, merluccius hubbsi (southwestern atlantic ocean)
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00344257_v177_n_p1_Marrari
http://hdl.handle.net/20.500.12110/paper_00344257_v177_n_p1_Marrari
_version_ 1768544901275844608

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