{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T04:26:22Z","timestamp":1777436782271,"version":"3.51.4"},"reference-count":52,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2019,7,30]],"date-time":"2019-07-30T00:00:00Z","timestamp":1564444800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The baseline of a specific variable defines the average behavior of that variable and it must be built from long data series that represent its spatial and temporal variability. In coastal and marine waters, phytoplankton can produce blooms characterized by a wide range of total cells number or chlorophyll a concentration. Classifying a phytoplankton abundance increase as a bloom depends on the species, the study area and the season. The objective of this study was to define the baseline of satellite absorption coefficients in Todos Santos Bay (Baja California, Mexico) to determine the presence of phytoplankton blooms based on the satellite inherent optical properties index (satellite IOP index). Two field points were selected according to historical bloom reports. To build the baseline, the data of phytoplankton absorption coefficients (     a  p h y  ,  G I O P        ) and detritus plus colored dissolved organic matter (CDOM) (     a  d C D O M  ,  G I O P        ) from the generalized inherent optical property (GIOP) satellite model of the NASA moderate resolution imaging spectroradiometer (MODIS-Aqua) sensor was studied for the period 2003 to 2016. Field data taken during a phytoplankton bloom event on June 2017 was used to validate the use of satellite products. The association between field and satellite data had a significant positive correlation. The satellite baseline detected a trend change from high values to low values of the satellite IOP index since 2010. Improved wastewater treatment to waters discharged into the Bay, and increased aquaculture of filter-feeding mollusks could have been the cause. The methodology proposed in this study can be a supplementary tool for permanent in situ monitoring programs. This methodology offers several advantages: A complete spatial coverage of the specific coastal area under study, appropriate temporal resolution and a tool for building an objective baseline to detect deviation from average conditions during phytoplankton bloom events.<\/jats:p>","DOI":"10.3390\/s19153339","type":"journal-article","created":{"date-parts":[[2019,7,30]],"date-time":"2019-07-30T11:15:56Z","timestamp":1564485356000},"page":"3339","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Detection of Phytoplankton Temporal Anomalies Based on Satellite Inherent Optical Properties: A Tool for Monitoring Phytoplankton Blooms"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9312-5336","authenticated-orcid":false,"given":"Jes\u00fas Antonio","family":"Aguilar-Maldonado","sequence":"first","affiliation":[{"name":"Facultad de Ciencias Marinas, Universidad Aut\u00f3noma de Baja California, Ensenada 22860, Mexico"},{"name":"Alumni PhD Postgraduate Program in Coastal Oceanography FCM-UABC, Ensenada 22860, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1882-7714","authenticated-orcid":false,"given":"Eduardo","family":"Santamar\u00eda-del-\u00c1ngel","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Marinas, Universidad Aut\u00f3noma de Baja California, Ensenada 22860, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7817-5343","authenticated-orcid":false,"given":"Adriana","family":"Gonzalez-Silvera","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Marinas, Universidad Aut\u00f3noma de Baja California, Ensenada 22860, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8042-5628","authenticated-orcid":false,"given":"Mar\u00eda Teresa","family":"Sebasti\u00e1-Frasquet","sequence":"additional","affiliation":[{"name":"Institut d\u2019Investigaci\u00f3 per a la Gesti\u00f3 Integrada de Zones Costaneres, Universitat Polit\u00e8cnica de Val\u00e8ncia, 46730 Grau de Gandia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,30]]},"reference":[{"key":"ref_1","unstructured":"Sanseverino, I., Conduto, D., Pozzoli, L., Dobricic, S., and Lettieri, T. (2016). Algal bloom and its economic impact. European Commission, Joint Research Centre Institute for Environment and Sustainability."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1016\/S0304-3800(98)00201-4","article-title":"Numerical modelling of phytoplankton bloom in the upwelling ecosystem of Cabo Frio (Brazil)","volume":"116","author":"Valentin","year":"1999","journal-title":"Ecol. Modell."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1016\/j.pocean.2007.10.002","article-title":"Summer phytoplankton blooms in the oligotrophic North Pacific Subtropical Gyre: Historical perspective and recent observations","volume":"76","author":"Dore","year":"2008","journal-title":"Prog. Oceanogr."},{"key":"ref_4","unstructured":"Sebasti\u00e1-Frasquet, M.T. (2015). Anthropocentric bias in management policies. Are we efficiently monitoring our ecosystem?. Coastal Ecosystems: Experiences and Recommendations for Environmental Monitoring Programs, Nova Science Publishers."},{"key":"ref_5","unstructured":"Sebastia-Frasquet, M.T. (2015). Experiences and Recommendations for Environmental Monitoring Programs. Environmental Science, Engineering and Technology, Nova Science Publishers."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1061\/(ASCE)0733-9364(2003)129:2(142)","article-title":"Management\u2019s Perception of Key Performance Indicators for Construction","volume":"129","author":"Cox","year":"2003","journal-title":"J. Constr. Eng. Manag."},{"key":"ref_7","first-page":"23","article-title":"Estimation of chlorophyll \u00abA\u00bb on the Mediterranean coast using a QuickBird image","volume":"37","year":"2012","journal-title":"Revista de Teledetecci\u00f3n"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"331","DOI":"10.1016\/j.rse.2017.09.008","article-title":"Remote sensing of chlorophyll-a in coastal waters based on the light absorption coefficient of phytoplankton","volume":"201","author":"Zheng","year":"2017","journal-title":"Remote Sens. Environ."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/j.rse.2017.11.014","article-title":"Remote sensing retrievals of colored dissolved organic matter and dissolved organic carbon dynamics in North American estuaries and their margins","volume":"205","author":"Cao","year":"2018","journal-title":"Remote Sens. Environ."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1016\/j.pocean.2013.12.008","article-title":"A review of ocean color remote sensing methods and statistical techniques for the detection, mapping and analysis of phytoplankton blooms in coastal and open oceans","volume":"123","author":"Gower","year":"2014","journal-title":"Prog. Oceanogr."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"18607","DOI":"10.1029\/96JC03243","article-title":"Inherent optical property inversion of ocean color spectra and its biogeochemical interpretation: 1. Time series from the Sargasso Sea","volume":"102","author":"Garver","year":"1997","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/j.dsr2.2013.07.023","article-title":"Multi-satellite time series of inherent optical properties in the California Current","volume":"112","author":"Kahru","year":"2015","journal-title":"Deep Sea Res. Part II Top. Stud. Oceanogr."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Kratzer, S., and Moore, G. (2018). Inherent optical properties of the baltic sea in comparison to other seas and oceans. Remote Sens., 10.","DOI":"10.3390\/rs10030418"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"186","DOI":"10.1016\/j.pocean.2018.01.001","article-title":"An overview of approaches and challenges for retrieving marine inherent optical properties from ocean color remote sensing","volume":"160","author":"Werdell","year":"2018","journal-title":"Prog. Oceanogr."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1016\/j.csr.2012.11.009","article-title":"Specific absorption coefficient of phytoplankton off the Southwest coast of the Iberian Peninsula: A contribution to algorithm development for ocean colour remote sensing","volume":"52","author":"Goela","year":"2013","journal-title":"Cont. Shelf Res."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Soja-Wo\u017aniak, M., Craig, S., Kratzer, S., Wojtasiewicz, B., Darecki, M., and Jones, C. (2017). A novel statistical approach for ocean colour estimation of inherent optical properties and cyanobacteria abundance in optically complex waters. Remote Sens., 9.","DOI":"10.3390\/rs9040343"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"4939","DOI":"10.1002\/2016JC012471","article-title":"Altered inherent optical properties and estimates of the underwater light field during an Arctic under-ice bloom of Phaeocystis pouchetii","volume":"122","author":"Pavlov","year":"2017","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_18","first-page":"1","article-title":"Reflectances of SPOT multispectral images associated with the turbidity of the Upper Gulf of California","volume":"50","year":"2017","journal-title":"Revista de Teledetecci\u00f3n"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1016\/j.jglr.2018.04.001","article-title":"An analysis of satellite-derived chlorophyll and algal bloom indices on Lake Winnipeg","volume":"44","author":"Binding","year":"2018","journal-title":"J. Great Lakes Res."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Aguilar-Maldonado, J.A., Santamar\u00eda-Del-\u00c1ngel, E., Gonz\u00e1lez-Silvera, A., Cervantes-Rosas, O.D., and Sebasti\u00e1-Frasquet, M.T. (2018). Mapping Satellite Inherent Optical Properties Index in Coastal Waters of the Yucat\u00e1n Peninsula (Mexico). Sustainability, 10.","DOI":"10.3390\/su10061894"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Kirk, J.T.O. (2010). Light and Photosynthesis in Aquatic Ecosystems, Cambridge University Press. [3rd ed.].","DOI":"10.1017\/CBO9781139168212"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1016\/j.rse.2013.09.016","article-title":"The Ocean Colour Climate Change Initiative: III. A round-robin comparison on in-water bio-optical algorithms","volume":"162","author":"Brewin","year":"2013","journal-title":"Remote Sens. Environ."},{"key":"ref_23","unstructured":"Sathyendranath, S. (2000). Remote Sensing of Ocean Colour in Coastal, and Other Optically-Complex, Waters. Reports of the International Ocean-Colour Coordinating Group, IOCCG. No. 3."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Aguilar-Maldonado, J.A., Santamar\u00eda-del-\u00c1ngel, E., Gonz\u00e1lez-Silvera, A., Cervantes-Rosas, O., L\u00f3pez, L.M., Guti\u00e9rrez-Magness, A., Cerdeira-Estrada, S., and Sebasti\u00e1-Frasquet, M.T. (2018). Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index) in Optically Complex Waters. Water, 10.","DOI":"10.3390\/w10020129"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"273","DOI":"10.5670\/oceanog.2016.32","article-title":"Biological impacts of the 2013\u20132015 warm-water anomaly in the Northeast Pacific: Winners, losers, and the future","volume":"29","author":"Cavole","year":"2016","journal-title":"Oceanography"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1042","DOI":"10.1038\/nclimate3082","article-title":"Multi-year persistence of the 2014\/15 North Pacific marine heatwave","volume":"6","author":"Mantua","year":"2016","journal-title":"Nat. Clim. Chang."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1007\/s11270-018-3938-3","article-title":"A New Monitoring System for the Surface Marine Anomalies","volume":"229","author":"Mkrtchyan","year":"2018","journal-title":"Water Air Soil Pollut."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"799","DOI":"10.1002\/joc.5843","article-title":"Modelling the impacts of the Pacific Ocean sea surface temperature anomalies on a drought event in southwestern China with a piecewise-integration method","volume":"39","author":"Gan","year":"2018","journal-title":"Int. J. Clim."},{"key":"ref_29","unstructured":"Rivera-Arriaga, E., S\u00e1nch\u00e9z-Gil, P., and Guti\u00e9rrez, J. (2019). Uso Potencial de las Anomal\u00edas Estandarizadas en la Interpretaci\u00f3n de Fen\u00f3menos Oceanogr\u00e1ficos Globales a Escalas Locales. Costas y Mares Mexicanos: Construyendo la L\u00ednea Base para su Futuro Sostenible, Oceanograf\u00eda Fisicoqu\u00edmica, Universidad Aut\u00f3noma de Colima."},{"key":"ref_30","unstructured":"Russell, J., Benway, H., Bracco, A., Deutsch, C., Ito, T., Kamenkovich, I., and Patterson, M. (2015). Ocean\u2019s Carbon and Heat Uptake: Uncertainties and Metrics, US CLIVAR Report."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"511","DOI":"10.1038\/nature08316","article-title":"El Ni\u00f1o in a changing climate","volume":"461","author":"Yeh","year":"2009","journal-title":"Nature"},{"key":"ref_32","first-page":"1","article-title":"Environmental factors influencing the variability of Lingulodinium polyedrum and Scrippsiella trochoidea (Dinophyceae) cyst production","volume":"35","year":"2009","journal-title":"Cienc. Mar."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"123","DOI":"10.7773\/cm.v43i2.2752","article-title":"Response of primary producers to the hydrographic variability in the southern region of the California Current System","volume":"43","author":"Durazo","year":"2017","journal-title":"Cienc. Mar."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"59","DOI":"10.7773\/cm.v33i1.1037","article-title":"Phytoplankton primary productivity in the euphotic zone of the California Current System estimated from CZCS imagery","volume":"33","year":"2007","journal-title":"Cienc. Mar."},{"key":"ref_35","unstructured":"(2018, August 02). INEGI 2015 (Instituto Nacional de Estad\u00edstica y Geograf\u00eda\/National Institute of Statistic and Geography). Available online: http:\/\/www.beta.inegi.org.mx\/programas\/intercensal\/2015\/default.html#Tabulados."},{"key":"ref_36","unstructured":"Almaz\u00e1n-Becerril, A., Ak\u00e9-Castillo, J.A., Garc\u00eda-Mendoza, E., S\u00e1nchez-Bravo, Y.A., Escobar-Morales, S., and Valadez-Cruz, F. (2016). Cat\u00e1logo de Microalgas de Bah\u00eda de Todos Santos, Baja California, CICESE."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"865","DOI":"10.1016\/j.scitotenv.2015.09.081","article-title":"Cadmium and phosphate variability during algal blooms of the dinoflagellate Lingulodinium polyedrum in Todos Santos Bay, Baja California, Mexico","volume":"541","author":"Lares","year":"2016","journal-title":"Sci. Total Environ."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1016\/j.ocemod.2008.11.002","article-title":"Towards the numerical simulation of the summer circulation in Todos Santos Bay, Ensenada, B.C. Mexico","volume":"27","author":"Mateos","year":"2009","journal-title":"Ocean Modell."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1199","DOI":"10.1111\/j.1365-2486.2008.01571.x","article-title":"Climate change and the timing, magnitude, and composition of the phytoplankton spring bloom","volume":"14","author":"Sommer","year":"2008","journal-title":"Glob. Chang. Biol."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1007\/s10750-012-1149-2","article-title":"Phytoplankton response to a changing climate","volume":"698","author":"Winder","year":"2012","journal-title":"Hydrobiologia"},{"key":"ref_41","unstructured":"McClain, C.R., and Meister, G. (2012). Mission Requirements for Future Ocean-Colour Sensors. Reports of the International Ocean-Colour Coordinating Group, IOCCG. No. 13."},{"key":"ref_42","unstructured":"CONAGUA (Comisi\u00f3n Nacional del Agua\/National Water Comission of Mexico) (2017). Inventory of Wastewater Plants, PTAR for Its Initials in Spanish, CONAGUA."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1190","DOI":"10.1016\/j.marpolbul.2006.02.005","article-title":"Bacteriological water quality along the Tijuana-Ensenada, Baja California, M\u00e9xico shoreline","volume":"52","author":"Weisberg","year":"2006","journal-title":"Mar. Pollut. Bull."},{"key":"ref_44","unstructured":"(1997). Norma Oficial Mexicana NOM-001-SEMARNAT-1996, Que Establece Los L\u00edmites M\u00e1ximos Permisibles de Contaminantes en las Descargas de Aguas Residuales en Aguas y Bienes Nacionales, SEMARNAT (Secretar\u00eda de Medio Ambiente y Recursos Naturales\/Ministry of Environment and Natural Resources)."},{"key":"ref_45","unstructured":"CONAPESCA (Comisi\u00f3n Nacional de Acuacultura y Pesca\/National Commission of Aquaculture and Fisheries of Mexico) (2017). Statistical Yearbook of Aquaculture and Fisheries Edition 2017, CONAPESCA."},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Dame, R.F. (1993). Bivalve Filter Feeders and Estuarine and Coastal Ecosystem Processes: Conclusions. Bivalve Filter Feeders, Springer.","DOI":"10.1007\/978-3-642-78353-1"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1016\/j.rse.2003.12.012","article-title":"Global and regional evaluation of the SeaWiFS chlorophyll data set","volume":"93","author":"Gregg","year":"2004","journal-title":"Remote Sens. Environ."},{"key":"ref_48","unstructured":"Morales, J., Stuart, V., Platt, T., and Sathyendranath, S. (2011). Comparison of In Situ and Remotely-Sensed Chl-a concentrations: A Statistical Examination of the Match-up Approach. Handbook of Satellite Remote Sensing Image Interpretation: Applications for Marine Living Resources Conservation and Management, EU PRESPO and IOCCG. Chapter 17."},{"key":"ref_49","unstructured":"COFEPRIS (Comisi\u00f3n Federal Para la Protecci\u00f3n Contra Riesgos Sanitarios\/Federal Commission for Protection against Health Risks) (2018, July 27). Lineamiento de Trabajo Para el Muestreo de Fitoplancton y Detecci\u00f3n de Biotoxinas Marinas, Available online: http:\/\/www.cofepris.gob.mx\/AZ\/Documents\/Lineamiento%20de%20Trabajo%20Muestreo%20y%20Deteccion.pdf."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.agee.2012.02.006","article-title":"Influence of nutrient inputs from a wetland dominated by agriculture on the phytoplankton community in a shallow harbour at the Spanish Mediterranean coast","volume":"152","author":"Rodilla","year":"2012","journal-title":"Agric. Ecosyst. Environ."},{"key":"ref_51","doi-asserted-by":"crossref","unstructured":"Wilson, C. (2003). Late summer chlorophyll blooms in the oligotrophic North Pacific subtropical gyre. Geophys. Res. Lett., 30.","DOI":"10.1029\/2003GL017770"},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Villareal, T.A., Adornato, L., Wilson, C., and Schoenbaechler, C.A. (2011). Summer blooms of diatom-diazotroph assemblages and surface chlorophyll in the North Pacific gyre: A disconnect. J. Geophys. Res. Oceans, 116.","DOI":"10.1029\/2010JC006268"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/15\/3339\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:11:12Z","timestamp":1760188272000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/15\/3339"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,7,30]]},"references-count":52,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2019,8]]}},"alternative-id":["s19153339"],"URL":"https:\/\/doi.org\/10.3390\/s19153339","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,7,30]]}}}