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Journal articles on the topic 'Phytoplankton spring bloom'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Lewandowska, Aleksandra M., Maren Striebel, Ulrike Feudel, Helmut Hillebrand, and Ulrich Sommer. "The importance of phytoplankton trait variability in spring bloom formation." ICES Journal of Marine Science 72, no. 6 (2015): 1908–15. http://dx.doi.org/10.1093/icesjms/fsv059.

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Abstract About 60 years ago, the critical depth hypothesis was proposed to describe the occurrence of spring phytoplankton blooms and emphasized the role of stratification for the timing of onset. Since then, several alternative hypotheses appeared focusing on the role of grazing and mixing processes such as turbulent convection or wind activity. Surprisingly, the role of community composition—and thus the distribution of phytoplankton traits—for bloom formation has not been addressed. Here, we discuss how trait variability between competing species might influence phytoplankton growth during

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2

Waga, Hisatomo, Hajo Eicken, Toru Hirawake, and Yasushi Fukamachi. "Variability in spring phytoplankton blooms associated with ice retreat timing in the Pacific Arctic from 2003–2019." PLOS ONE 16, no. 12 (2021): e0261418. http://dx.doi.org/10.1371/journal.pone.0261418.

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The Arctic is experiencing rapid changes in sea-ice seasonality and extent, with significant consequences for primary production. With the importance of accurate monitoring of spring phytoplankton dynamics in a changing Arctic, this study further examines the previously established critical relationship between spring phytoplankton bloom types and timing of the sea-ice retreat for broader temporal and spatial coverages, with a particular focus on the Pacific Arctic for 2003–2019. To this end, time-series of satellite-retrieved phytoplankton biomass were modeled using a parametric Gaussian func

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3

Mignot, A., R. Ferrari, and K. A. Mork. "Spring bloom onset in the Nordic Seas." Biogeosciences Discussions 12, no. 16 (2015): 13631–73. http://dx.doi.org/10.5194/bgd-12-13631-2015.

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Abstract. The North Atlantic spring bloom is a massive annual growth event of marine phytoplankton, tiny free-floating algae that form the base of the ocean's food web and generates a large fraction of the global primary production of organic matter. The conditions that trigger the onset of the spring bloom in the Nordic Seas, at the northern edge of the North Atlantic, are studied using in-situ data from five bio-optical floats released above the Arctic Circle. It is often assumed that spring blooms start as soon as phytoplankton cells daily irradiance is sufficiently abundant that division r

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Mignot, Alexandre, Raffaele Ferrari, and Kjell Arne Mork. "Spring bloom onset in the Nordic Seas." Biogeosciences 13, no. 11 (2016): 3485–502. http://dx.doi.org/10.5194/bg-13-3485-2016.

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Abstract. The North Atlantic spring bloom is a massive annual growth event of marine phytoplankton, tiny free-floating algae that form the base of the ocean's food web and generates a large fraction of the global primary production of organic matter. The conditions that trigger the onset of the spring bloom in the Nordic Seas, at the northern edge of the North Atlantic, are studied using in situ data from six bio-optical floats released north of the Arctic Circle. It is often assumed that spring blooms start as soon as phytoplankton cells daily irradiance is sufficiently abundant that division

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5

Корсак, M. Korsak, Мошаров, et al. "Influence of Solar Physics Factors on the Spring Growth of Phytoplankton in Reservoir." Safety in Technosphere 6, no. 2 (2017): 19–27. http://dx.doi.org/10.12737/article_598d6e6af0ec46.94857569.

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The article gives the results of retrospective statistical analysis, which justify the presence of statistical dependencies between the dates of the beginning and the peak values of the spring phytoplankton bloom in the Uchinsk reservoir and the intensity of total solar radiation in the range of photosynthetically active radiation (PAR), as well as the value of the integral indices of the activity of the Sun (Wolf number), in the period preceding of phytoplankton bloom. It is found, that the greater the magnitude of the fluxes of solar radiation in the PAR range will get the surface of the res

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6

Ferreira, Afonso, Vanda Brotas, Carla Palma, Carlos Borges, and Ana C. Brito. "Assessing Phytoplankton Bloom Phenology in Upwelling-Influenced Regions Using Ocean Color Remote Sensing." Remote Sensing 13, no. 4 (2021): 675. http://dx.doi.org/10.3390/rs13040675.

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Phytoplankton bloom phenology studies are fundamental for the understanding of marine ecosystems. Mismatches between fish spawning and plankton peak biomass will become more frequent with climate change, highlighting the need for thorough phenology studies in coastal areas. This study was the first to assess phytoplankton bloom phenology in the Western Iberian Coast (WIC), a complex coastal region in SW Europe, using a multisensor long-term ocean color remote sensing dataset with daily resolution. Using surface chlorophyll a (chl-a) and biogeophysical datasets, five phenoregions (i.e., areas w

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7

Mahadevan, Amala, Eric D’Asaro, Craig Lee, and Mary Jane Perry. "Eddy-Driven Stratification Initiates North Atlantic Spring Phytoplankton Blooms." Science 337, no. 6090 (2012): 54–58. http://dx.doi.org/10.1126/science.1218740.

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Springtime phytoplankton blooms photosynthetically fix carbon and export it from the surface ocean at globally important rates. These blooms are triggered by increased light exposure of the phytoplankton due to both seasonal light increase and the development of a near-surface vertical density gradient (stratification) that inhibits vertical mixing of the phytoplankton. Classically and in current climate models, that stratification is ascribed to a springtime warming of the sea surface. Here, using observations from the subpolar North Atlantic and a three-dimensional biophysical model, we show

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8

Record, Nicholas R., William M. Balch, and Karen Stamieszkin. "Century-scale changes in phytoplankton phenology in the Gulf of Maine." PeerJ 7 (May 2, 2019): e6735. http://dx.doi.org/10.7717/peerj.6735.

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The phenology of major seasonal events is an important indicator of climate. We analyzed multiple datasets of in situ chlorophyll measurements from the Gulf of Maine dating back to the early 20th century in order to detect climate-scale changes in phenology. The seasonal cycle was consistently characterized by a two-bloom pattern, with spring and autumn blooms. The timing of both spring and autumn blooms has shifted later in the year at rates ranging from ∼1 to 9 days per decade since 1960, depending on the phenology metric, and trends only emerged at time scales of >40 years. Bloom phenolo

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9

Miladinova, Svetla, Adolf Stips, Diego Macias Moy, and Elisa Garcia-Gorriz. "Seasonal and Inter-Annual Variability of the Phytoplankton Dynamics in the Black Sea Inner Basin." Oceans 1, no. 4 (2020): 251–73. http://dx.doi.org/10.3390/oceans1040018.

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We explore the patterns of Black Sea phytoplankton growth as driven by the thermohaline structure and circulation system and the freshwater nutrient loads. Seasonal and inter-annual variability of the phytoplankton blooms is examined using hydrodynamic simulations that resolve mesoscale eddies and online coupled bio-geochemical model. This study suggests that the bloom seasonality is homogeneous across geographic locations of the Black Sea inner basin, with the strongest bloom occurring in winter (February–March), followed by weaker bloom in spring (April–May), summer deep biomass maximum (DBM

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10

Brody, Sarah R., and M. Susan Lozier. "Characterizing upper-ocean mixing and its effect on the spring phytoplankton bloom with in situ data." ICES Journal of Marine Science 72, no. 6 (2015): 1961–70. http://dx.doi.org/10.1093/icesjms/fsv006.

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Abstract Since publication, the Sverdrup hypothesis, that phytoplankton are uniformly distributed within the ocean mixed layer and bloom once the ocean warms and stratifies in spring, has been the conventional explanation of subpolar phytoplankton spring bloom initiation. Recent studies have sought to differentiate between the actively mixing section of the upper ocean and the uniform-density mixed layer, arguing, as Sverdrup implied, that decreases in active mixing drive the spring bloom. In this study, we use in situ data to investigate the characteristics and depth of active mixing in both

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11

Zhai, Li, Trevor Platt, Charles Tang, Shubha Sathyendranath, and Rafael Hernández Walls. "Phytoplankton phenology on the Scotian Shelf." ICES Journal of Marine Science 68, no. 4 (2011): 781–91. http://dx.doi.org/10.1093/icesjms/fsq175.

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Abstract Zhai, L., Platt, T., Tang, C., Sathyendranath, S., and Hernández Walls, R. 2011. Phytoplankton phenology on the Scotian Shelf. – ICES Journal of Marine Science, 68: . The impact of physical forcing on seasonal and interannual phytoplankton dynamics was examined using SeaWiFS chlorophyll, AVHRR sea surface temperature (SST), nitrate, and other hydrographic measurements for the Scotian Shelf and Scotian Slope. The spring bloom was characterized by a shifted Gaussian function fitted to seasonal chlorophyll time-series. The background chlorophyll (a constant term in the Gaussian function)

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12

Cerino, Federica, Daniela Fornasaro, Martina Kralj, Michele Giani, and Marina Cabrini. "Phytoplankton temporal dynamics in the coastal waters of the north-eastern Adriatic Sea (Mediterranean Sea) from 2010 to 2017." Nature Conservation 34 (May 3, 2019): 343–72. http://dx.doi.org/10.3897/natureconservation.34.30720.

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Phytoplankton community structure was analysed from 2010 to 2017 at C1-LTER, the coastal Long-Term Ecological Research station located in the Gulf of Trieste, which is the northernmost part of the Mediterranean Sea. Phytoplankton abundance and relevant oceanographic parameters were measured monthly in order to describe the seasonal cycle and interannual variability of the main phytoplankton taxa (diatoms, dinoflagellates, coccolithophores and flagellates) and to analyse their relationship with environmental conditions. Overall, phytoplankton abundances showed a marked seasonal cycle characteri

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13

Cerino, Federica, Daniela Fornasaro, Martina Kralj, Michele Giani, and Marina Cabrini. "Phytoplankton temporal dynamics in the coastal waters of the north-eastern Adriatic Sea (Mediterranean Sea) from 2010 to 2017." Nature Conservation 34 (May 3, 2019): 343–72. https://doi.org/10.3897/natureconservation.34.30720.

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Phytoplankton community structure was analysed from 2010 to 2017 at C1-LTER, the coastal Long-Term Ecological Research station located in the Gulf of Trieste, which is the northernmost part of the Mediterranean Sea. Phytoplankton abundance and relevant oceanographic parameters were measured monthly in order to describe the seasonal cycle and interannual variability of the main phytoplankton taxa (diatoms, dinoflagellates, coccolithophores and flagellates) and to analyse their relationship with environmental conditions. Overall, phytoplankton abundances showed a marked seasonal cycle characteri

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14

Lindemann, Christian, Jan O. Backhaus, and John Michael A. St. "Physiological constrains on Sverdrup's Critical-Depth-Hypothesis: the influences of dark respiration and sinking." ICES Journal of Marine Science 72, no. 6 (2015): 1942–51. https://doi.org/10.1093/icesjms/fsv046.

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Discussions on the controls initiating the onset of the phytoplankton spring bloom in particular in the North Atlantic have since Sverdrup been dominated by the role of physical and biological drivers. Undoubtedly, these drivers play an important role in phytoplankton dynamics and thus the onset of the spring bloom. However, they neglect the cells ability to modify vital rates in response to changes in the external environment. In this study, we use a non-hydrostatic convection model coupled to an Individual-Based-Model to simulate changes phytoplankton cells during the transition from winter

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15

Daniels, C. J., A. J. Poulton, M. Esposito, et al. "Phytoplankton dynamics in contrasting early stage North Atlantic spring blooms: composition, succession, and potential drivers." Biogeosciences 12, no. 8 (2015): 2395–409. http://dx.doi.org/10.5194/bg-12-2395-2015.

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Abstract. The spring bloom is a key annual event in the phenology of pelagic ecosystems, making a major contribution to the oceanic biological carbon pump through the production and export of organic carbon. However, there is little consensus as to the main drivers of spring bloom formation, exacerbated by a lack of in situ observations of the phytoplankton community composition and its evolution during this critical period. We investigated the dynamics of the phytoplankton community structure at two contrasting sites in the Iceland and Norwegian basins during the early stage (25 March–25 Apri

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16

Daniels, C. J., A. J. Poulton, M. Esposito, et al. "Phytoplankton dynamics in contrasting early stage North Atlantic spring blooms: composition, succession, and potential drivers." Biogeosciences Discussions 12, no. 1 (2015): 93–133. http://dx.doi.org/10.5194/bgd-12-93-2015.

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Abstract. The spring bloom is a key annual event in the phenology of pelagic ecosystems, making a major contribution to the oceanic biological carbon pump through the production and export of organic carbon. However, there is little consensus as to the main drivers of spring bloom formation, exacerbated by a lack of in situ observations of the phytoplankton community composition and its evolution during this critical period. We investigated the dynamics of the phytoplankton community structure at two contrasting sites in the Iceland and Norwegian Basins during the early stage (25 March–25 Apri

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17

Wolfe, A. Megan, Susan E. Allen, Michal Hodal, Rich Pawlowicz, Brian P. V. Hunt, and Desiree Tommasi. "Impact of advection loss due to wind and estuarine circulation on the timing of the spring phytoplankton bloom in a fjord." ICES Journal of Marine Science 73, no. 6 (2015): 1589–609. http://dx.doi.org/10.1093/icesjms/fsv151.

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Abstract A coupled biophysical model is used to explore the physical controls involved in the timing of the spring phytoplankton bloom in fjords. Observations from Rivers Inlet, British Columbia, are used to force and evaluate the model. It is found that the interannual variation in timing is due primarily to variations in retention, in particular, to variations in horizontal advection out of the fjord. The two dominant processes are (i) strong outflow winds rapidly advecting the surface layer and thus the phytoplankton population out of the fjord and (ii) losses due to high river flux increas

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18

Dong, K., KØ Kvile, NC Stenseth, and LC Stige. "Associations between timing and magnitude of spring blooms and zooplankton dynamics in the southwestern Barents Sea." Marine Ecology Progress Series 668 (June 24, 2021): 57–72. http://dx.doi.org/10.3354/meps13740.

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During the past decades, many high-latitude marine systems have experienced a strong warming trend with poorly understood consequences for trophic coupling and ecosystem functioning. A key knowledge gap is how timing and magnitude of phytoplankton blooms influence higher trophic levels. We investigated associations between timing and magnitude of phytoplankton blooms and dynamics of 3 size fractions of mesozooplankton from 1998 to 2019. The study focused on the southwestern Barents Sea, an Arctic shelf sea area that is dominated by relatively warm Atlantic waters and which remains ice-free yea

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19

Collins, A. Kathleen, Susan E. Allen, and Rich Pawlowicz. "The role of wind in determining the timing of the spring bloom in the Strait of Georgia." Canadian Journal of Fisheries and Aquatic Sciences 66, no. 9 (2009): 1597–616. http://dx.doi.org/10.1139/f09-071.

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A coupled biophysical model of the Strait of Georgia (SoG), British Columbia, Canada, has been developed and successfully predicts the timing of the spring phytoplankton bloom. The physical model is a one-dimensional vertical mixing model, using a K-profile parametrization of the boundary layer, forced with high frequency meteorological data. The biological model includes one phytoplankton class (microphytoplankton) and one nutrient source (nitrate). The spring bloom in the SoG occurs when phytoplankton receive enough light that their growth rates exceed their loss rates. The amount of light t

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20

Kivva, K. K., J. V. Selivanova, M. N. Pisareva, and A. A. Sumkina. "Role of physical processes in formation of spring phytoplankton bloom in the Bering Sea." Trudy VNIRO 181 (2020): 206–22. http://dx.doi.org/10.36038/2307-3497-2020-181-206-222.

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The main part of the annual primary production in the Arctic and Subarctic zones of the World Ocean is formed during the spring phytoplankton bloom. The timing of the bloom depends on combination of physical factors. Oscillating control hypothesis, proposed in [Hunt et al., 2002] for the Eastern Bering Sea, describes annual peculiarities of ecosystem development related to conditions of the spring phytoplankton bloom. We review propositions of this hypothesis on the reasons of phytoplankton bloom and its connection with physical processes for four local regions of the Bering Sea shelf. The reg

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21

Lindemann, Christian, Jan O. Backhaus, and Michael A. St John. "Physiological constrains on Sverdrup's Critical-Depth-Hypothesis: the influences of dark respiration and sinking." ICES Journal of Marine Science 72, no. 6 (2015): 1942–51. http://dx.doi.org/10.1093/icesjms/fsv046.

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Abstract Discussions on the controls initiating the onset of the phytoplankton spring bloom in particular in the North Atlantic have since Sverdrup been dominated by the role of physical and biological drivers. Undoubtedly, these drivers play an important role in phytoplankton dynamics and thus the onset of the spring bloom. However, they neglect the cells ability to modify vital rates in response to changes in the external environment. In this study, we use a non-hydrostatic convection model coupled to an Individual-Based-Model to simulate changes phytoplankton cells during the transition fro

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22

Schapira, Mathilde, Dorothee Vincent, Valerie Gentilhomme, and Laurent Seuront. "Temporal patterns of phytoplankton assemblages, size spectra and diversity during the wane of a Phaeocystis globosa spring bloom in hydrologically contrasted coastal waters." Journal of the Marine Biological Association of the United Kingdom 88, no. 4 (2008): 649–62. http://dx.doi.org/10.1017/s0025315408001306.

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The space–time dynamic of phytoplankton diversity and succession was investigated during the wane of a Phaeocystis globosa spring bloom in four distinct hydrological sub-systems of the eastern English Channel. Nutrients, chlorophyll-a concentrations, and phytoplankton composition, standing stocks, size spectra and diversity were monitored during three key periods in 2003: late spring, early summer and summer. Two consecutive diatom assemblages were observed, respectively dominated by: (i) small colonial species (<100 μm; Melosira sp., Diploneis sp. and Navicula transitans) in April; and (ii

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23

Malick, Michael J., Sean P. Cox, Franz J. Mueter, and Randall M. Peterman. "Linking phytoplankton phenology to salmon productivity along a north–south gradient in the Northeast Pacific Ocean." Canadian Journal of Fisheries and Aquatic Sciences 72, no. 5 (2015): 697–708. http://dx.doi.org/10.1139/cjfas-2014-0298.

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We investigated spatial and temporal components of phytoplankton dynamics in the Northeast Pacific Ocean to better understand the mechanisms linking biological oceanographic conditions to productivity of 27 pink salmon (Oncorhynchus gorbuscha) stocks. Specifically, we used spatial covariance functions in combination with multistock spawner–recruit analyses to model relationships among satellite-derived chlorophyll a concentrations, initiation date of the spring phytoplankton bloom, and salmon productivity. For all variables, positive spatial covariation was strongest at the regional scale (0–8

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Shiomoto, Akihiro, Koji Asakuma, Han-Dong Hoon, Koichi Sakaguchi, and Kimihiko Maekawa. "An early spring bloom of large diatoms in the ice-covered Saroma-ko Lagoon, Hokkaido, Japan." Journal of the Marine Biological Association of the United Kingdom 92, no. 1 (2011): 29–37. http://dx.doi.org/10.1017/s0025315411000361.

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Saroma-ko Lagoon, the largest body of water that has complete ice coverage during winter in Japan, was not completely covered by ice in the winter of 2009. This condition is considered to be a result of the progression of global warming. A bloom of large diatoms was observed in the ice-free area between February and April. This early spring bloom seemed to have started in the latter part of January, and lasted for about three months. The maximum chlorophyll-a (Chl a) concentration of about 10 mg m−3 was observed in March, and was similar to the level of 5–20 mg m−3 previously reported for the

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Brandt, G., and K. W. Wirtz. "Hydrodynamics and light climate structure alongshore phytoplankton blooms in spring." Biogeosciences Discussions 6, no. 3 (2009): 4993–5030. http://dx.doi.org/10.5194/bgd-6-4993-2009.

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Abstract. Phytoplankton blooms are a recurring phenomenon that have significant impact on annual biogeochemistry and food-web dynamics in many aquatic ecosystems. The causes for their variability, which is high especially in coastal seas, remain poorly understood. We present an example for distinct differences in the spatio-temporal chlorophyll-a (CHL-a) distribution on an interannual scale, integrating high-frequency data from an autonomous measuring device (FerryBox), which operated on an alongshore route in the coastal North Sea. While in one year CHL-a was spatially homogeneous (2004), a b

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26

Zang, Zhengchen, Rubao Ji, Zhixuan Feng, Changsheng Chen, Siqi Li, and Cabell S. Davis. "Spatially varying phytoplankton seasonality on the Northwest Atlantic Shelf: a model-based assessment of patterns, drivers, and implications." ICES Journal of Marine Science 78, no. 5 (2021): 1920–34. http://dx.doi.org/10.1093/icesjms/fsab102.

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Abstract The signal of phytoplankton responses to climate-related forcing can be obscured by the heterogeneity of shelf seascapes, making them difficult to detect from fragmented observations. In this study, a physical–biological model was applied to the Northwest Atlantic Shelf to capture the seasonality of phytoplankton. The difference in phytoplankton seasonality between the Mid-Atlantic Bight (MAB) and the Gulf of Maine (GoM) is a result of the interplay between nutrients and temperature: In the MAB, relatively high temperature in the cold season and longer oligotrophic environment in the

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Stoecker, Diane K., Mary Putt, and Tiffany Moisan. "Nano- and Microplankton Dynamics during the Spring Phaeocystis Sp. Bloom in McMurdo Sound, Antarctica." Journal of the Marine Biological Association of the United Kingdom 75, no. 4 (1995): 815–32. http://dx.doi.org/10.1017/s0025315400038170.

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The seasonal development of the microbial food web in eastern McMurdo Sound, Antarctica, was investigated during and immediately after the 1990–1991 bloom of Phaeocystis sp. (Prymnesiophyceae: Prymnesiales). From 23 November to 7 December, which was before the appearance of macroscopic colonies of Phaeocystis, both phytoplankton and Protozoa were low in abundance. During the Phaeocystis bloom (~10 December to 7 January), phytoplankton biomass was high and was dominated by colonial and singlecelled Phaeocystis, but other phytoplankton taxa, including diatoms and photosynthetic dinoflagellates,

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Llort, Joan, Marina Lévy, Jean-Baptiste Sallée, and Alessandro Tagliabue. "Onset, intensification, and decline of phytoplankton blooms in the Southern Ocean." ICES Journal of Marine Science 72, no. 6 (2015): 1971–84. http://dx.doi.org/10.1093/icesjms/fsv053.

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Abstract The seasonal cycle of phytoplankton biomass in the Southern Ocean (SO) is characterized by a period of rapid accumulation, known as bloom, that is typical of high-latitude regions. Recent studies have illustrated how spatial and temporal dynamics of blooms in the SO are more complex than in other oceans. This complexity is likely related to differences in vertical mixing and the iron availability. In this work, we examine the sensitivity of bloom dynamics to changes in vertical mixing and iron availability using a biogeochemical model. Under idealized physical forcing, we produce seas

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Leaf, Robert T., and Kevin D. Friedland. "Autumn bloom phenology and magnitude influence haddock recruitment on Georges Bank." ICES Journal of Marine Science 71, no. 8 (2014): 2017–25. http://dx.doi.org/10.1093/icesjms/fsu076.

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Abstract The haddock (Melanogrammus aeglefinus) stock on Georges Bank in the Northwest Atlantic is characterized by extremely large recruitment events relative to spawning-stock biomass. Recent work has indicated that the dynamics of the preceding autumn bloom may have explanatory power to describe these events. In this paper, we examine the hypothesis that autumn phytoplankton dynamics affect the recruitment of haddock, examine the temporal and spatial characteristics of the autumn phytoplankton bloom on Georges Bank, and correlate individual sex-specific condition measurements of haddock mad

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Lau, Winnie W. Y., Richard G. Keil, and E. Virginia Armbrust. "Succession and Diel Transcriptional Response of the Glycolate-Utilizing Component of the Bacterial Community during a Spring Phytoplankton Bloom." Applied and Environmental Microbiology 73, no. 8 (2007): 2440–50. http://dx.doi.org/10.1128/aem.01965-06.

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ABSTRACT The influence of the phytoplankton-specific organic compound glycolate on bacterial community structure was examined during the 2004 spring phytoplankton bloom (February to April) in Dabob Bay in Washington. The diversity of the bacteria able to utilize glycolate during the phytoplankton bloom was determined using previously developed PCR primers to amplify the gene for the D subunit of glycolate oxidase (glcD). Many of the glcD sequences obtained represented novel sequences that appeared to be specific to marine environments. Overall, the glcD sequence diversity decreased as the phyt

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Prasanthi, N., A. V. V. S. Swamy, and K. N. Murty. "Seasonal distribution of phytoplankton in river Gauthami-Godavari, Andhra Pradesh." INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES 19, no. 1 (2023): 185–92. http://dx.doi.org/10.15740/has/ijas/19.1/185-192.

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The present study was investigated to evaluate the seasonal variability of phytoplankton species at the places Vruddha and Bhairavapalem along the stretch of river Godavari in Konaseema region, Andhra Pradesh. A total of 123 phytoplankton species were identified during the study period (2015-2017) in which diatoms contributes 91, dinoflagellates -26, Blue Green Algae-1 chlorphyceae-4. Dissimilarity in phytoplankton species composition was noticed in all seasons. Diatoms found as the dominant prevailing phytoplankton group in all seasons in terms of number of species and abundance. Diatom speci

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Enriquez, Rica Mae, and John R. Taylor. "Numerical simulations of the competition between wind-driven mixing and surface heating in triggering spring phytoplankton blooms." ICES Journal of Marine Science 72, no. 6 (2015): 1926–41. http://dx.doi.org/10.1093/icesjms/fsv071.

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Abstract About 60 years ago, Sverdrup formalized the critical depth hypothesis to explain the timing of the spring phytoplankton bloom in terms of the depth of the surface mixed layer. In recent years, a number of refinements and alternatives to the critical depth hypothesis have been proposed, including the critical turbulence hypothesis which states that a bloom can occur when turbulent mixing is sufficiently weak, irrespective of the mixed layer depth. Here, we examine the relative influence of wind-driven mixing and net surface heating on phytoplankton growth. Of particular interest is whe

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Chiswell, Stephen M., Karl A. Safi, Sylvia G. Sander, et al. "Exploring mechanisms for spring bloom evolution: contrasting 2008 and 2012 blooms in the southwest Pacific Ocean." Journal of Plankton Research 41, no. 3 (2018): 329–48. http://dx.doi.org/10.1093/plankt/fbz017.

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AbstractObservations from two research cruises made in 2008 and 2012 to east of New Zealand are put into context with satellite data to contrast and compare surface chlorophyll a evolution in the two years in order to explore mechanisms of phytoplankton bloom development in the southwest Pacific Ocean. In 2008, surface chlorophyll a largely followed the long-term climatological cycle, and 2008 can be considered a canonical year, where the autumn bloom is triggered by increasing vertical mixing at the end of summer and the spring bloom is triggered by decreasing vertical mixing at the end of wi

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Brunet, C., F. Conversano, F. Margiotta, et al. "Role of light and photophysiological properties on phytoplankton succession during the spring bloom in the north-western Mediterranean Sea." Advances in Oceanography and Limnology 4, no. 1 (2013): 1. http://dx.doi.org/10.4081/aiol.2013.5334.

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This study aimed to determine the role of light on the succession of the phytoplankton community during the spring bloom in the northwestern Mediterranean Sea. To this end, three successive Lagrangian experiments were carried out between March and April 2003. The three experiments correspond to distinct phases of the bloom development (pre-bloom, bloom peak and post-bloom, respectively) and therefore to different trophic conditions. Phytoplankton (sampled on a daily scale) was grouped in size-based classes (pico and nano+micro) each of them were characterised in terms of chemotaxonomic composi

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Olofsson, Malin, Anders Torstensson, Maria Karlberg, et al. "Limited response of a spring bloom community inoculated with filamentous cyanobacteria to elevated temperature and pCO2." Botanica Marina 62, no. 1 (2019): 3–16. http://dx.doi.org/10.1515/bot-2018-0005.

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Abstract Temperature and CO2 levels are projected to increase in the future, with consequences for carbon and nutrient cycling in brackish environments, such as the Baltic Sea. Moreover, filamentous cyanobacteria are predicted to be favored over other phytoplankton groups under these conditions. Under a 12-day outdoor experiment, we examined the effect on a natural phytoplankton spring bloom community of elevated temperature (from 1°C to 4°C) and elevated pCO2 (from 390 to 970 μatm). No effects of elevated pCO2 or temperature were observed on phytoplankton biovolumes, but a significantly highe

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CABALLERO, I., E. P. MORRIS, L. PIETRO, and G. NAVARRO. "The influence of the Guadalquivir river on spatio-temporal variability in the pelagic ecosystem of the eastern Gulf of Cádiz." Mediterranean Marine Science 15, no. 4 (2014): 721. http://dx.doi.org/10.12681/mms.844.

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This study examines the spatio-temporal variability of the turbidity plume and phytoplankton biomass (in terms of chlorophyll) in the marine region influenced by the Guadalquivir estuary using ocean colour images over a period of 11 years (2003-2013). The area of the turbidity plume was calculated using water-leaving radiance at 555 nm (nLw555). Climatologic and monthly averages showed recurrent high nLw555 levels in winter and high chlorophyll in spring. Similar variability was confirmed by Empirical Orthogonal Function (EOF) analysis of 8-day composite images, illustrating the existence of d

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González-Gil, Ricardo, Neil S. Banas, Eileen Bresnan, and Michael R. Heath. "The onset of the spring phytoplankton bloom in the coastal North Sea supports the Disturbance Recovery Hypothesis." Biogeosciences 19, no. 9 (2022): 2417–26. http://dx.doi.org/10.5194/bg-19-2417-2022.

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Abstract. The spring phytoplankton bloom is a key event in temperate and polar seas, yet the mechanisms that trigger it remain under debate. Some hypotheses claim that the spring bloom onset occurs when light is no longer limiting, allowing phytoplankton division rates to surpass a critical threshold. In contrast, the Disturbance Recovery Hypothesis (DRH) proposes that the onset responds to an imbalance between phytoplankton growth and loss processes, allowing phytoplankton biomass to start accumulating, and this can occur even when light is still limiting. Although several studies have shown

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Tian, Rucheng, Changsheng Chen, Jianhua Qi, Rubao Ji, Robert C. Beardsley, and Cabell Davis. "Model study of nutrient and phytoplankton dynamics in the Gulf of Maine: patterns and drivers for seasonal and interannual variability." ICES Journal of Marine Science 72, no. 2 (2014): 388–402. http://dx.doi.org/10.1093/icesjms/fsu090.

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Abstract Coupled physical–biological modelling experiments were made for the period of 1995–2009 to analyse the spatial and interannual variability of nutrients and phytoplankton production in the Gulf of Maine (GOM). The physical model was the Finite-Volume Community Ocean Model (FVCOM) and the biological model was a Nitrogen, Phytoplankton, Zooplankton, and Detritus (NPZD) model. The simulation was carried out with realistic meteorological surface forcing, five major tidal constituents, river discharge, and observation-based open boundary conditions. The results were robust with comparison t

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Brandt, G., and K. W. Wirtz. "Interannual variability of alongshore spring bloom dynamics in a coastal sea caused by the differential influence of hydrodynamics and light climate." Biogeosciences 7, no. 1 (2010): 371–86. http://dx.doi.org/10.5194/bg-7-371-2010.

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Abstract. Timing and spatial distribution of phytoplankton blooms in coastal oceans are highly variable. The interactions of various biological and physical factors leading to the observed variability are complex and remain poorly understood. We present an example for distinct differences in the spatio-temporal chlorophyll a (CHL-a) distribution on an interannual scale, integrating high-frequency data from an autonomous measuring device (FerryBox), which operated on an alongshore route in the coastal German Bight (North Sea). While in one year the distribution of CHL-a was spatially homogeneou

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Piquet, A. M. T., W. H. van de Poll, R. J. W. Visser, C. Wiencke, H. Bolhuis, and A. G. J. Buma. "Springtime phytoplankton dynamics in Arctic Krossfjorden and Kongsfjorden (Spitsbergen) as a function of glacier proximity." Biogeosciences 11, no. 8 (2014): 2263–79. http://dx.doi.org/10.5194/bg-11-2263-2014.

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Abstract. The hydrographic properties of the Kongsfjorden–Krossfjorden system (79° N, Spitsbergen) are affected by Atlantic water incursions as well as glacier meltwater runoff. This results in strong physical gradients (temperature, salinity and irradiance) within the fjords. Here, we tested the hypothesis that glaciers affect phytoplankton dynamics as early as the productive spring bloom period. During two campaigns in 2007 (late spring) and 2008 (early spring) we studied hydrographic characteristics and phytoplankton variability along two transects in both fjords, using high-performance liq

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Piquet, A. M. T., W. H. van de Poll, R. J. W. Visser, C. Wiencke, H. Bolhuis, and A. G. J. Buma. "Springtime phytoplankton dynamics in the Arctic Krossfjorden and Kongsfjorden (Spitsbergen) as a function of glacier proximity." Biogeosciences Discussions 10, no. 10 (2013): 15519–57. http://dx.doi.org/10.5194/bgd-10-15519-2013.

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Abstract. The hydrographic properties of the Kongsfjorden – Krossfjorden system (79° N, Spitsbergen) are affected by Atlantic water incursions as well as glacier meltwater runoff. This results in strong physical gradients (temperature, salinity and irradiance) within the fjords. Here, we tested the hypothesis that glaciers affect phytoplankton dynamics as early as the productive spring bloom period. During two campaigns in 2007 (late spring) and 2008 (early spring) we studied hydrographic characteristics and phytoplankton variability along 2 transects in both fjords, using HPLC-CHEMTAX pigment

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Hovsepyan, A. A., A. S. Mamyan, T. G. Khachikyan, I. V. Tikhonova, O. I. Belykh, and G. A. Gevorgyan. "MONITORING OF PHYTOPLANKTON STATUS IN LAKE SEVAN (ARMENIA) IN 2018." Proceedings of the YSU B: Chemical and Biological Sciences 53, no. 3 (250) (2019): 206–11. http://dx.doi.org/10.46991/pysu:b/2019.53.3.206.

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The current status of phytoplankton community in Lake Sevan (LS) was investigated. Water samples for phytoplankton and mineral phosphorus analyses were collected seasonally (spring–fall) in 2018. The results of the study showed that the unstabilized processes and nutrient pollution of the lake ecosystem led to bluegreen algae bloom in July. All of this caused ecological and toxicological risks to the lake ecosystem and the environment and may lead to further algal blooms in LS.

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Trombetta, Thomas, Behzad Mostajir, Justine Courboulès, et al. "Warming and trophic structure tightly control phytoplankton bloom amplitude, composition and succession." PLOS ONE 19, no. 10 (2024): e0308505. http://dx.doi.org/10.1371/journal.pone.0308505.

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To better identify the responses of phytoplankton blooms to warming conditions as expected in a climate change context, an in situ mesocosm experiment was carried out in a coastal Mediterranean lagoon (Thau Lagoon, South of France) in April 2018. Our objective was to assess both the direct and indirect effects of warming on phytoplankton, particularly those mediated by top-down control. Four treatments were applied: 1) natural planktonic community with ambient water temperature (C); 2) natural planktonic community at +3°C elevated temperature (T); 3) exclusion of larger zooplankton (> 200 μ

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Starr, Michel, John H. Himmelman, and Jean-Claude Therriault. "Environmental Control of Green Sea Urchin, Strongylocentrotus droebachiensis, Spawning in the St. Lawrence Estuary." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 5 (1993): 894–901. http://dx.doi.org/10.1139/f93-103.

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Environmental factors and spawning of the green sea urchin, Strongylocentrotus droebachiensis, were examined during 1983 and 1984 in the St. Lawrence Estuary. In both years, spawning occurred in June, which contrasts sharply with the February to early May spawnings reported for other locations. This difference does not appear to be related to temperature, but to the much delayed spring increase of phytoplankton in the Estuary. In both 1983 and 1984, sea urchin spawning coincided with the first marked and sustained increase in phytoplankton abundance (chlorophyll a levels of 1–2 mg∙m−3 for >

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Dong, K., ØK Kvile, NC Stenseth, and LC Stige. "Associations among temperature, sea ice and phytoplankton bloom dynamics in the Barents Sea." Marine Ecology Progress Series 635 (February 6, 2020): 25–36. http://dx.doi.org/10.3354/meps13218.

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Variations in physical conditions caused by climate change are likely to have large influences on marine organisms, including phytoplankton. Here, we investigated associations between satellite-derived chlorophyll a data from the Barents Sea and 2 key abiotic factors: sea surface temperature and sea-ice concentration. Specifically, we investigated how climate variability, through the measured physical factors, associated with phytoplankton phenology between 1998 and 2014. Associations between sea surface temperature and phytoplankton bloom dynamics differed depending on the area. The spring ph

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Tammilehto, Anna, Phillip C. Watts, and Nina Lundholm. "Isolation by Time During an Arctic Phytoplankton Spring Bloom." Journal of Eukaryotic Microbiology 64, no. 2 (2016): 248–56. http://dx.doi.org/10.1111/jeu.12356.

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Fang, Xiaoqi, and Ulrich Sommer. "Overwintering effects on the spring bloom dynamics of phytoplankton." Journal of Plankton Research 39, no. 5 (2017): 772–80. http://dx.doi.org/10.1093/plankt/fbx046.

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Motwani, Gunjan, Rahul Rajan, Mini Raman, Prakash Chuhan, and Hitesh Solanki. "Ecological Insights from Phytoplankton Diversity Off Veraval, Gujarat Coast, India." Ecology, Environment and Conservation 29 (2023): S314—S320. http://dx.doi.org/10.53550/eec.2023.v29i01s.047.

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Phytoplankton species are sensitive to environmental and seasonal variability. This property of phytoplankton can be used to predict and study fluctuations in the ecological health of the system. In this study, phytoplankton diversity and its direct interactions with abiotic components of the ecosystem were studied to evaluate the health and stability of the coastal waters of Veraval, Gujarat coast, India. Results showed that diatoms dominated the ecosystem with a strong seasonal pattern of community succession. Waters were well churned and turbidity hindered penetration of light into deeper l

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Bahamondes Dominguez, Angela A., Anna E. Hickman, Robert Marsh, and C. Mark Moore. "Constraining the response of phytoplankton to zooplankton grazing and photo-acclimation in a temperate shelf sea with a 1-D model – towards S2P3 v8.0." Geoscientific Model Development 13, no. 9 (2020): 4019–40. http://dx.doi.org/10.5194/gmd-13-4019-2020.

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Abstract. An established one-dimensional Shelf Sea Physics and Primary Production (S2P3) model has been developed into three different new models: S2P3-NPZ which includes a nutrient–phytoplankton–zooplankton (NPZ) framework, where the grazing rate is no longer fixed but instead varies over time depending on different functions chosen to represent the predator–prey relationship between zooplankton and phytoplankton; S2P3-Photoacclim which includes a representation of the process of photo-acclimation and flexible stoichiometry in phytoplankton; and S2P3 v8.0 which combines the NPZ framework and

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Shiomoto, Akihiro. "Chlorophyll-a and primary production during spring in the oceanic region of the Oyashio Water, the north-western Pacific." Journal of the Marine Biological Association of the United Kingdom 80, no. 2 (2000): 343–54. http://dx.doi.org/10.1017/s0025315499001927.

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The concentration of phytoplankton chlorophyll-a (chl-a) and primary production within the euphotic zone (at depths corresponding to 100, 30, 10 and 2% light) were measured in the oceanic region of the Oyashio Water, the north-western Pacific, in spring of 1993, 1994 and 1995. The chl-a concentrations ranged from 0.15 to 6.98 mg m−3 and the range of chl-a standing stock integrated from the surface to the 2% light depth was between 4 and 43 mg m−2. The daily primary production integrated from the surface to the 2 and 0.2% light depths was estimated to be between 94 and 1695 mg C m−2 d−1 and bet

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