Phytoplankton as Key Mediators of the Biological Carbon Pump: Their Responses to a Changing Climate

Basu, Samarpita; Mackey, Katherine

doi:10.3390/su10030869

Cited by 177 publications

(92 citation statements)

References 101 publications

(199 reference statements)

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“…The fertile waters of Batuhideung waters would promote the life of more phytoplankton than the concentrations of dissolved oxygen could support. It is about 50% of the photosynthesis process on the earth's surface is contributed by marine phytoplankton (Basu and Mackey 2018).…”

Section: Dissolved Oxygen (Do)mentioning

confidence: 99%

Relationship between environmental parameters and the plankton community of the Batuhideung Fishing Grounds,

2018

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Takarina ND, Nurliansyah W, Wardhana W. 2019. Relationship between environmental parameters and the planktoncommunity of the Batuhideung Fishing Grounds, Pandeglang, Banten, Indonesia. Biodiversitas 20: 171-180. Phytoplankton has a roleas primary producers and zooplankton as primary consumers in the marine environments. The composition of the plankton communityis dependent on the physical and chemical characteristics of the waters. The aim of the research described here was to analyze thecommunity structure of plankton in the Batuhideung Fishing Grounds, of Banten in Indonesia, and to relate this structure to the physicalparameters (sea surface temperature, clarity, current velocity) and chemical parameters (salinity, pH, DO, nitrate, phosphate) of its seasurroundings. The research was conducted three times at five observation stations from September to October 2017. Samples ofphytoplankton and zooplankton were taken horizontally using nets with mesh size of 80 μm and 133 μm, respectively. Results showedthat the sea surface temperature ranged from 28.70-30.20C, current velocity 0.10-1.30 m/s, clarity 7-10 m, salinity 30-34 g/L, DO 6.20-8.60 mg/L, pH 8.40-8.59, nitrate concentration 0.49-0.81 mg/L, and phosphate concentration 0.09-0.42 mg/L. There were 37 generafrom 4 classes of phytoplankton. The abundance of Bacillariophyta was 52,734 individuals/L, Myzozoa was 1,315 ind/L, Chyanophytawas 633 ind/L, and Euglenophyta was 200 ind/L. There were 35 genera from 12 classes of zooplankton, dominated by Copepods withabundance 82.1-91.4%. The diversity index of phytoplankton ranged from 1.25-2.02, evenness index ranged from 0.52-0.85, anddominance index ranged from 0.19-0.38. Based on multivariate cluster analysis, there were similar environmental parameters in stations1, 2 and 3, while stations 4 and 5 grouped differently from the other three. Based on Pearson's correlation analysis, current velocity andphosphate were positively correlated to phytoplankton abundance, whereas temperature, transparency, salinity, DO, pH, and nitrate werenegatively correlated, temperature significantly so. Nitrate, phosphate, salinity, DO were positively correlated with zooplanktonabundance but not significantly. Temperature, current velocity, clarity, and pH were negatively correlated with zooplankton abundance,but only with pH did the correlation reach statistical significance.

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Section: Dissolved Oxygen (Do)mentioning

confidence: 99%

Relationship between environmental parameters and the plankton community of the Batuhideung Fishing Grounds,

2018

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“…The variability of the marine organic carbon cycle in a changing climate has been discussed by several papers in this issue [64][65][66][67]; the dynamics of which are related to temporal (seasonal, inter-annual) variations in hydrodynamics, nutrient cycling, and other biogeochemical processes. Continuous monitoring efforts and modelling studies are essential in predicting future changes organic carbon distributions with respect to identified factors.…”

Section: Organic Carbon and The Sustainable Use Of The Environment Anmentioning

confidence: 99%

Organic Carbon Concentrations in High- and Low-Productivity Areas of the Sulu Sea

et al. 2018

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The sequestration of anthropogenic carbon dioxide in the form of organic carbon and its eventual deposition in the sediments is an important component of the marine carbon cycle. In the Sulu Sea, Philippines, organic carbon contents in the sediments have been relatively well studied, but the processes that describe the organic carbon distributions in the water column have not been elucidated. Dissolved and particulate organic carbon (DOC, POC) concentrations were measured at several stations in the Sulu Sea during the northeast monsoon of 2007/2008 to understand the dynamics of organic carbon in this unique internal sea. Analyses of primary productivity estimates, beam attenuation coefficient (at 660 nm) profiles, and correlation coefficients among DOC, POC and other parameters (e.g., apparent oxygen utilization) at different layers of the water column indicate that surface primary productivity, upwelling, bottom intensified flows across sills, and ventilation from shallow sills, which may contain semi-labile DOC that is estimated to largely contribute to microbial respiration in the bathypelagic layer, are the major processes that affect the DOC and POC distributions in the Sulu Sea. The variability of these processes should be taken into consideration when assessing the sustainability of internal and marginal seas as carbon sinks.

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“…Diatoms are also constantly re-adjusting the equilibrium between energy production from photosynthesis and energy consumption under environmental stress conditions, an ability that undermines their success in highly dynamic coastal and estuarine environments [27]. While they are responsible for half of all the photosynthesis on Earth and thus have an important role in the global biological carbon pump and the silica cycle [28], our knowledge of carbon allocation regulation in diatoms is very limited, particularly because of these present distinct metabolic compartmentations and additional metabolic pathways in comparison to the more widely studied green algae [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Glyphosate-Based Herbicide Toxicophenomics in Marine Diatoms: Impacts on Primary Production and Physiological Fitness

et al. 2020

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Glyphosate is the main active component of the commercial formulation Roundup®, the most widely used chemical herbicide worldwide. However, its potential high toxicity to the environment and throughout trophic webs has come under increasing scrutiny. The present study aims to investigate the application of bio-optical techniques and their correlation to physiological and biochemical processes, including primary productivity, oxidative stress, energy balance, and alterations in pigment and lipid composition in Phaeodactylum tricornutum, a representative species of marine diatoms, using the case study of its response to the herbicide glyphosate-based Roundup® formulation, at environmentally relevant concentrations. Cultures were exposed to the herbicide formulation representing effective glyphosate concentrations of 0, 10, 50, 100, 250, and 500 μg L−1. Results showed that high concentrations decreased cell density; furthermore, the inhibition of photosynthetic activity was not only caused by the impairment of electron transport in the thylakoids, but also by a decrease of antioxidant capacity and increased lipid peroxidation. Nevertheless, concentrations of one of the plastidial marker fatty acids had a positive correlation with the highest concentration as well as an increase in total protein. Cell energy allocation also increased with concentration, relative to control and the lowest concentration, although culture growth was inhibited. Pigment composition and fatty acid profiles proved to be efficient biomarkers for the highest glyphosate-based herbicide concentrations, while bio-optical data separated controls from intermediate concentrations and high concentrations.

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Phytoplankton as Key Mediators of the Biological Carbon Pump: Their Responses to a Changing Climate

Cited by 177 publications

References 101 publications

Relationship between environmental parameters and the plankton community of the Batuhideung Fishing Grounds,

Relationship between environmental parameters and the plankton community of the Batuhideung Fishing Grounds,

Organic Carbon Concentrations in High- and Low-Productivity Areas of the Sulu Sea

Glyphosate-Based Herbicide Toxicophenomics in Marine Diatoms: Impacts on Primary Production and Physiological Fitness

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