Phytoplankton phenology indices in coral reef ecosystems: Application to ocean-color observations in the Red Sea

Handle URI:
http://hdl.handle.net/10754/552307
Title:
Phytoplankton phenology indices in coral reef ecosystems: Application to ocean-color observations in the Red Sea
Authors:
Racault, Marie-Fanny; Raitsos, Dionysios E.; Berumen, Michael L. ( 0000-0003-2463-2742 ) ; Brewin, Robert J.W.; Platt, Trevor; Sathyendranath, Shubha; Hoteit, Ibrahim ( 0000-0002-3751-4393 )
Abstract:
Phytoplankton, at the base of the marine food web, represent a fundamental food source in coral reef ecosystems. The timing (phenology) and magnitude of the phytoplankton biomass are major determinants of trophic interactions. The Red Sea is one of the warmest and most saline basins in the world, characterized by an arid tropical climate regulated by the monsoon. These extreme conditions are particularly challenging for marine life. Phytoplankton phenological indices provide objective and quantitative metrics to characterize phytoplankton seasonality. The indices i.e. timings of initiation, peak, termination and duration are estimated here using 15 years (1997–2012) of remote sensing ocean-color data from the European Space Agency (ESA) Climate Change Initiative project (OC-CCI) in the entire Red Sea basin. The OC-CCI product, comprising merged and bias-corrected observations from three independent ocean-color sensors (SeaWiFS, MODIS and MERIS), and processed using the POLYMER algorithm (MERIS period), shows a significant increase in chlorophyll data coverage, especially in the southern Red Sea during the months of summer NW monsoon. In open and reef-bound coastal waters, the performance of OC-CCI chlorophyll data is shown to be comparable with the performance of other standard chlorophyll products for the global oceans. These features have permitted us to investigate phytoplankton phenology in the entire Red Sea basin, and during both winter SE monsoon and summer NW monsoon periods. The phenological indices are estimated in the four open water provinces of the basin, and further examined at six coral reef complexes of particular socio-economic importance in the Red Sea, including Siyal Islands, Sharm El Sheikh, Al Wajh bank, Thuwal reefs, Al Lith reefs and Farasan Islands. Most of the open and deeper waters of the basin show an apparent higher chlorophyll concentration and longer duration of phytoplankton growth during the winter period (relative to the summer phytoplankton growth period). In contrast, most of the reef-bound coastal waters display equal or higher peak chlorophyll concentrations and equal or longer duration of phytoplankton growth during the summer period (relative to the winter phytoplankton growth period). The ecological and biological significance of the phytoplankton seasonal characteristics are discussed in context of ecosystem state assessment, and particularly to support further understanding of the structure and functioning of coral reef ecosystems in the Red Sea.
KAUST Department:
Red Sea Research Center (RSRC); Earth Science and Engineering Program
Citation:
Phytoplankton phenology indices in coral reef ecosystems: Application to ocean-color observations in the Red Sea 2015, 160:222 Remote Sensing of Environment
Publisher:
Elsevier BV
Journal:
Remote Sensing of Environment
Issue Date:
18-Feb-2015
DOI:
10.1016/j.rse.2015.01.019
Type:
Article
ISSN:
00344257
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0034425715000371
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorRacault, Marie-Fannyen
dc.contributor.authorRaitsos, Dionysios E.en
dc.contributor.authorBerumen, Michael L.en
dc.contributor.authorBrewin, Robert J.W.en
dc.contributor.authorPlatt, Trevoren
dc.contributor.authorSathyendranath, Shubhaen
dc.contributor.authorHoteit, Ibrahimen
dc.date.accessioned2015-05-05T14:39:17Zen
dc.date.available2015-05-05T14:39:17Zen
dc.date.issued2015-02-18en
dc.identifier.citationPhytoplankton phenology indices in coral reef ecosystems: Application to ocean-color observations in the Red Sea 2015, 160:222 Remote Sensing of Environmenten
dc.identifier.issn00344257en
dc.identifier.doi10.1016/j.rse.2015.01.019en
dc.identifier.urihttp://hdl.handle.net/10754/552307en
dc.description.abstractPhytoplankton, at the base of the marine food web, represent a fundamental food source in coral reef ecosystems. The timing (phenology) and magnitude of the phytoplankton biomass are major determinants of trophic interactions. The Red Sea is one of the warmest and most saline basins in the world, characterized by an arid tropical climate regulated by the monsoon. These extreme conditions are particularly challenging for marine life. Phytoplankton phenological indices provide objective and quantitative metrics to characterize phytoplankton seasonality. The indices i.e. timings of initiation, peak, termination and duration are estimated here using 15 years (1997–2012) of remote sensing ocean-color data from the European Space Agency (ESA) Climate Change Initiative project (OC-CCI) in the entire Red Sea basin. The OC-CCI product, comprising merged and bias-corrected observations from three independent ocean-color sensors (SeaWiFS, MODIS and MERIS), and processed using the POLYMER algorithm (MERIS period), shows a significant increase in chlorophyll data coverage, especially in the southern Red Sea during the months of summer NW monsoon. In open and reef-bound coastal waters, the performance of OC-CCI chlorophyll data is shown to be comparable with the performance of other standard chlorophyll products for the global oceans. These features have permitted us to investigate phytoplankton phenology in the entire Red Sea basin, and during both winter SE monsoon and summer NW monsoon periods. The phenological indices are estimated in the four open water provinces of the basin, and further examined at six coral reef complexes of particular socio-economic importance in the Red Sea, including Siyal Islands, Sharm El Sheikh, Al Wajh bank, Thuwal reefs, Al Lith reefs and Farasan Islands. Most of the open and deeper waters of the basin show an apparent higher chlorophyll concentration and longer duration of phytoplankton growth during the winter period (relative to the summer phytoplankton growth period). In contrast, most of the reef-bound coastal waters display equal or higher peak chlorophyll concentrations and equal or longer duration of phytoplankton growth during the summer period (relative to the winter phytoplankton growth period). The ecological and biological significance of the phytoplankton seasonal characteristics are discussed in context of ecosystem state assessment, and particularly to support further understanding of the structure and functioning of coral reef ecosystems in the Red Sea.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0034425715000371en
dc.rightsArchived with thanks to Remote Sensing of Environment. http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectPhytoplankton phenologyen
dc.subjectOcean-color remote sensingen
dc.subjectESA OC-CCIen
dc.subjectCoral reef ecosystemsen
dc.subjectMonsoonen
dc.subjectEcological indicatorsen
dc.subjectRed Seaen
dc.titlePhytoplankton phenology indices in coral reef ecosystems: Application to ocean-color observations in the Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalRemote Sensing of Environmenten
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionPlymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth PL1 3DH, United Kingdomen
dc.contributor.institutionBiology Department, Woods Hole Oceanographic Institution, 266 Woods Hole Rd, Woods Hole, MA 02543, USAen
kaust.authorBerumen, Michael L.en
kaust.authorHoteit, Ibrahimen
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