Article
Environmental Sciences
Carlota Muniz, Christopher D. McQuaid, Nicolas Weidberg
Summary: The study on mussel species along the south coast of South Africa revealed that 70% of the variability in recruitment and adult cover can be explained by seasonal variability in chlorophyll-a. Sea surface temperature and chlorophyll-a at two upwelling centers showed less predictable seasonal cycles, likely influenced by recent changes in the Agulhas Current. These findings suggest that changes in environmental fluctuations on different timescales can impact the distribution patterns of key ecosystem engineers.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geochemistry & Geophysics
Richard Munoz, Odette A. Vergara, Pedro A. Figueroa, Piero Mardones, Marcus Sobarzo, Gonzalo S. Saldias
Summary: Coastal upwelling is the dominant physical process driving high biological productivity in Eastern Boundary Upwelling Systems (EBUS). This study investigated the phenology of wind-driven upwelling off central-southern Chile using reanalysis data and in situ hydrographic data. The results showed significant variability in the onset, duration, and intensity of upwelling, with the El Nino and La Nina events having a strong impact on the upwelling process.
DYNAMICS OF ATMOSPHERES AND OCEANS
(2023)
Article
Environmental Sciences
Carlos A. S. Araujo, Claude Belzile, Jean-Eric Tremblay, Simon Belanger
Summary: This study investigated the seasonal and spatial variability of surface phytoplankton assemblages and associated environmental niches in a human-impacted subarctic coastal bay in Quebec, Canada. The results showed that the phytoplankton assemblages in the Bay of Sept-iles were more diverse than in the central portion of the St. Lawrence Estuary. The temporal distribution of the phytoplankton assemblages reflected the major seasonal signal of the nearshore subarctic environment.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
M. J. Lima, P. Relvas, A. B. Barbosa
Summary: This study aimed to evaluate the spatial-temporal variability patterns and phenology of key toxigenic phytoplankton species in southern Portugal and identify the environmental drivers and predictors. The study found several environmental factors that influence harmful algal blooms and made suggestions for improving prediction models.
Article
Geosciences, Multidisciplinary
Lucas De La Maza, Laura Farias
Summary: Hypoxia is a common phenomenon off the central coast of Chile, with a significant increase in hypoxic and severe hypoxic areas since 1997, mainly influenced by seasonal coastal upwelling and intensification of winds. Observations show that hypoxic waters are found below 30 m, while severe hypoxic waters occur below 50 m. The presence of hypoxia is strongly correlated with seasonal and interannual variations, including the El Nino Southern Oscillation (ENSO).
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Environmental Sciences
Jyothibabu Retnamma, Karnan Chinnadurai, Jagadeesan Loganathan, Arunpandi Nagarathinam, Parthasarathi Singaram, Albin Konnakkamannil Jose
Summary: Research indicates that the nutrient enrichment of coastal upwelling along the southwest coast of India leads to changes in the morphological characteristics and body size of microautotrophs. During the Southwest Monsoon, these organisms form large colonies to better assimilate nitrate.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Oceanography
Shailja Gangrade, Peter J. S. Franks
Summary: Locally enhanced productivity and carbon export are observed at oceanic density fronts, and the physical-biological interplay along and across these fronts is often assumed or hypothesized. However, the short residence times of waters in fronts challenge this assumption. This study explores an eddy-associated front in the California Current System, finding distinct origins of phytoplankton patches along the front, related to strong upstream coastal upwelling pulses.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Ana Picado, Nuno Vaz, Ines Alvarez, Joao M. Dias
Summary: The northwestern coast of the Iberian Peninsula is characterized by active hydrologic and biogeochemical processes, supporting valuable fish and shellfish resources with significant local socioeconomic impact. The study developed and validated a coupled physical-biological model to investigate the relation between local circulation, hydrography, and Chl-a concentration under different intensities of summer upwelling events. The results showed that the phytoplankton patterns were dependent on the characteristics of the upwelling event.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Oceanography
D. Catlett, D. A. Siegel, R. D. Simons, N. Guillocheau, F. Henderikx-Freitas, C. S. Thomas
Summary: In the Santa Barbara Channel, nanophytoplankton groups respond most rapidly to seasonal upwelling, followed by diatoms and picophytoplankton as the water column stratifies in the summer. Regional surface ocean advection plays a substantial role in driving phytoplankton composition in the Santa Barbara Channel.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Ecology
Yu Wang, Jianhua Kang, Xuebao He, Yili Lin, Peng Xiang
Summary: Upwelling plays a crucial role in supporting marine ecosystem diversity. Wind-driven upwelling in southeast China during summer exhibits interannual variability in intensity, extent, and central location, leading to spatial heterogeneity in the surrounding environment. A restricted coastal upwelling event with weak intensity was observed in June 2009, accompanied by spatial heterogeneity in nutrients. The upwelling resulted in peak chlorophyll a and phytoplankton abundance, indicating that the spatial variability of the phytoplankton community is controlled by changes in upwelling location and intensity.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Monica Demetriou, Dionysios E. Raitsos, Antonia Kournopoulou, Manolis Mandalakis, Spyros Sfenthourakis, Stella Psarra
Summary: Due to the lack of long-term in situ datasets, the study uses remotely sensed ocean-colour observations and in situ data to investigate phytoplankton seasonal succession in coastal waters of Cyprus. The results show that the growth period of phytoplankton begins in November, peaks in February and ends in April, with a duration of approximately 4 months. The dominant components of the phytoplankton community are nano- and micro-plankton cells, and during the peak in February, nanophytoplankton and potentially larger diatoms play a major role.
Article
Environmental Sciences
Martin Jacques-Coper, Christian Segura, Maria Belen de la Torre, Pedro Valdebenito Munoz, Sebastian I. Vasquez, Diego A. Narvaez
Summary: The investigation focuses on the factors favoring regional phytoplankton growth in the Inner Sea of Chiloe in northwestern Patagonia, which has experienced harmful algal blooms in the past decade. The study analyzes synoptic-to-intraseasonal variability of phytoplankton biomass and its relationship with meteorological and oceanographic conditions.
FRONTIERS IN MARINE SCIENCE
(2023)
Review
Oceanography
K. J. Albin, R. Jyothibabu, K. T. Alok, S. Santhikrishnan, S. Sarath, V Sudheesh, C. K. Sherin, K. K. Balachandran, C. R. Asha Devi, G. V. M. Gupta
Summary: This study investigates the response of phytoplankton size classes in the Eastern Arabian Sea to nutrient enrichment during monsoon seasons. The results show that phytoplankton biomass and primary production are relatively low during both monsoon seasons in the Northeastern Arabian Sea, but significantly higher in the Southeastern Arabian Sea during the Southwest Monsoon due to coastal upwelling. The differences in phytoplankton size fractions can be explained by the physical processes enabling nutrient entrainment into the euphotic layer and the characteristics of the surface mixed layer.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Oceanography
K. O. Forsch, K. C. Fulton, M. M. Weiss, J. W. Krause, M. R. Stukel, K. A. Barbeau
Summary: This study investigates the biogeochemical connections between iron, macronutrients, and particles in coastal upwelling filaments. It found that the presence of iron influences the concentration of biogenic particles, such as diatoms, which in turn affects the ratios of surface macronutrient reservoirs and biogeochemical advective fluxes. This may lead to efficient carbon export downstream and offshore of the region with the highest phytoplankton growth rates and productivity.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Afonso Ferreira, Vanda Brotas, Carla Palma, Carlos Borges, Ana C. Brito
Summary: Phytoplankton bloom phenology in the Western Iberian Coast was studied using remote sensing data, defining different phenoregions with varying bloom patterns. Oceanic phytoplankton in northern waters exhibit classic spring blooms, while those in southern waters typically begin in late autumn. Coastal phytoplankton blooms are short-lived, high-biomass, and highly heterogeneous, influenced by various factors.
Article
Oceanography
Ramiro Riquelme-Bugueno, Marco Correa-Ramirez, Ruben Escribano, Sergio Nunez, Samuel Hormazabal
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2015)
Article
Geosciences, Multidisciplinary
Fabian A. Gomez, Yvette H. Spitz, Harold P. Batchelder, Marco A. Correa-Ramirez
JOURNAL OF MARINE SYSTEMS
(2017)
Article
Oceanography
Carmen E. Morales, Valeria Anabalon, Joaquim P. Bento, Samuel Hormazabal, Marcela Cornejo, Marco A. Correa-Ramirez, Nelson Silva
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2017)
Article
Environmental Sciences
Marco Correa-Ramirez, Carmen E. Morales, Ricardo Letelier, Valeria Anabalon, Samuel Hormazabal
Article
Environmental Sciences
Andrea Corredor-Acosta, Carmen E. Morales, Robert J. W. Brewin, Pierre-Amael Auger, Oscar Pizarro, Samuel Hormazabal, Valeria Anabalon
Article
Oceanography
Isabel Andrade, Pablo Sangra, Samuel Hormazabal, Marco Correa-Ramirez
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2014)
Review
Oceanography
V. Anabalon, J. Aristegui, C. E. Morales, I. Andrade, M. Benavides, M. A. Correa-Ramirez, M. Espino, O. Ettahiri, S. Hormazabal, A. Makaoui, M. F. Montero, A. Orbi
PROGRESS IN OCEANOGRAPHY
(2014)
Article
Oceanography
Santiago Martinez-Clavijo, Marco Correa-Ramirez, Jorge Paramo, Constanza Ricaurte-Villota
CONTINENTAL SHELF RESEARCH
(2019)
Article
Oceanography
Marco Correa-Ramirez, Angel Rodriguez-Santana, Constanza Ricaurte-Villota, Jorge Paramo
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2020)
Article
Biology
Johanna Medellin-Mora, Ruben Escribano, Wolfgang Schneider, Marco Correa-Ramirez, Nestor Campos
REVISTA DE BIOLOGIA TROPICAL
(2018)
Article
Ecology
Marcela Cornejo D'Ottone, Luis Bravo, Marcel Ramos, Oscar Pizarro, Johannes Karstensen, Mauricio Gallegos, Marco Correa-Ramirez, Nelson Silva, Laura Farias, Lee Karp-Boss