Will temperature and salinity changes exacerbate the effects of seawater acidification on the marine microalga Phaeodactylum tricornutum?

Bautista-Chamizo, Esther; Sendra, Marta; Cid, Ángeles; Seoane, Marta; Orte, Manoela Romanó de; Riba, Inmaculada

doi:10.1016/j.scitotenv.2018.03.314

Cited by 19 publications

(7 citation statements)

References 65 publications

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“…Concerning salinity (Fig. 6), values of 40 mg /l were reported at site 2, 41 mg / l in site 1 and 42 mg/l in site 3; many authors talk about climate change that has a direct impact on the whole land including the oceans, among the filed scenarios is that are expected is that the salinity changes due to the global warming phenomenon, the reduction of salinity or its increase depends on the latitude of the region [23]. This explains the variations in salinity found in the sites studied.…”

Section: Physico-chemical Resultsmentioning

confidence: 99%

Evaluation of the Physicochemical and Bacteriological Study of the Three Sites in Ain Sebaa-Zenata Region after the Installation of the Anti-pollution Station of the East Coast of Grand Casablanca

Hdia

Elkhalfi

Wina

et al. 2019

ARRB

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The Moroccan coastline has been subjected exceptionally to the growth of urban agglomerations as well as to the negative effect of various industrial activities, together with the contributions of watersheds, wadis and streams that dump their sewage and the waste generated by cities and their periphery. Aim: First of all, we carry out an evaluation of the Physicochemical, bacteriological state of the bathing water sample of the beaches of Ain Sebaâ-Zenata through the search of the bacteriological and chemical contaminants in three sites by reinforcing them to the national norms and standards which govern the quality of the bathing water, on the other hand, we compare these results with those found before the inauguration of the anti-pollution station East of Greater Casablanca. Study Design: Study of the seawater quality of three swimming beaches. Place and Duration of Study: Seawater was collected on 15/04/2017 from 3 sites in the Ain Sebaa- Zenata (Douar Abdellah Belhaj Beach, El Nahla Beach, Zenata Beach) region of the city of Casablanca after the installation of the anti-pollution station. Methodology: Our job articulates on two axes: On the one hand, the study and the analysis of the physicochemical, bacteriological quality of the seawater after the installation of EST Casablanca anti-pollution station at the level of three sites (Douar Abdellah Belhaj Beach, El Nahla Beach, Zenata Beach). On the other hand, the comparison of these results with others already carried out before the development of this station via the same characteristics: Physico-chemical, bacteriological. Results: In the light of the acquired results, a correlation was pointed out between the Physicochemical and bacteriological examination in comparison with the standards in the three studied sites, which were previously recognized as heavily contaminated bathing areas before the installation of the station. It supports the conclusion that this anti-pollution system has a beneficial and advantageous effect and confirms its cleansing role. Conclusion: The current physico-chemical and bacteriological results of seawater in the Ain Sebaaa - Zenata region after the installation of the anti-pollution station show a significant improvement in the quality of this bathing area as well as the beneficial effect of this plant, which performs a very considerable purification function.

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Section: Physico-chemical Resultsmentioning

confidence: 99%

Evaluation of the Physicochemical and Bacteriological Study of the Three Sites in Ain Sebaa-Zenata Region after the Installation of the Anti-pollution Station of the East Coast of Grand Casablanca

Hdia

Elkhalfi

Wina

et al. 2019

ARRB

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“…Our results, based on a study conducted in the laboratory, showed that the adaptive response of algae to changes in abiotic stressors could be identified and quantified. In this way, the present fundamental study may help to understand how salinity controls the diversity, structure, and function of microbial communities in aquatic systems, with only those microorganisms that have successfully adapted to salinity being able to survive the ongoing and projected salinity fluctuations (Baek et al 2011;Triadó-Margarit and Casamayor 2012;Bautista-Chamizo et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Salinity-induced chemical, mechanical, and behavioral changes in marine microalgae

et al. 2022

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This study examines how salinity reduction triggers the response of three marine microalgae at the molecular and unicellular levels in terms of chemical, mechanical, and behavioral changes. At the lowest salinity, all microalgal species exhibited an increase in membrane sterols and behaved stiffer. The glycocalyx-coated species Dunaliella tertiolecta was surrounded by a thick actin layer and showed the highest physiological activity, negatively affecting cell motility and indicating the formation of the palmella stage. The lipid content of membrane and the hydrophobicity of cell were largely preserved over a wide range of salinity, confirming the euryhaline nature of Dunaliella. The species with calcite-encrusted theca Tetraselmis suecica exhibited the highest hydrophobicity at the lowest salinity of all cells examined. At salinity of 19, the cells of T. suecica showed the lowest growth, flagellar detachment and the lowest cell speed, the highest physiological activity associated with a dense network of extracellular polymeric substances, and a decrease in membrane lipids, which could indicate develepment of cyst stage. The organosilicate encrusted species Cylindrotheca closterium appeared to be salinity tolerant. It behaved hydrophobically at lower salinity, whereas becoming hydrophilic at higher salinity, which might be related to a molecular change in the released biopolymers. This study highlighted the interplay between chemistry and mechanics that determines functional cell behavior and shows that cell surface properties and behavior could serve as stress markers for marine biota under climate change. Graphical Abstract

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“…When the salinity conditions of the growth of the algae cells change, the osmotic pressure of cells change, thus cause damage to the algae cells. The change of salinity also affects the toxin synthesis 37 . This study showed that, there was a significant regression relationship between growth rate of P. parvum and salinity.…”

Section: Discussionmentioning

confidence: 99%

Application of uniform design to evaluate the different conditions on the growth of algae Prymnesium parvum

Yin

XuYang

Zhao

et al. 2021

Sci Rep

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Prymnesium parvum is an environmentally harmful algae and well known for its toxic effects to the fish culture. However, there is a dearth of studies on the growth behavior of P. parvum and information on how the availability of nutrients and environmental factors affect their growth rate. To address this knowledge gap, we used a uniform design approach to quantify the effects of major nutrients (N, P, Si and Fe) and environmental factors (water temperature, pH and salinity) on the biomass density of P. parvum. We also generated the growth model for P. parvum as affected by each of these nutrients and environmental factors to estimate optimum conditions of growth. Results showed that P. parvum can reach its maximum growth rate of 0.789, when the water temperature, pH and salinity is 18.11 °C, 8.39, and 1.23‰, respectively. Moreover, maximum growth rate (0.895–0.896) of P. parvum reached when the concentration of nitrogen, phosphorous, silicon and iron reach 3.41, 1.05, 0.69 and 0.53 mg/l, respectively. The order of the effects of the environmental factors impacting the biomass density of P. parvum was pH > salinity > water temperature, while the order of the effects of nutrients impacting the biomass density of P. parvum was nitrogen > phosphorous > iron > silicon. These findings may assist to implement control measures of the population of P. parvum where this harmful alga threatens aquaculture industry in the waterbodies such as Ningxia region in China.

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Will temperature and salinity changes exacerbate the effects of seawater acidification on the marine microalga Phaeodactylum tricornutum?

Cited by 19 publications

References 65 publications

Evaluation of the Physicochemical and Bacteriological Study of the Three Sites in Ain Sebaa-Zenata Region after the Installation of the Anti-pollution Station of the East Coast of Grand Casablanca

Evaluation of the Physicochemical and Bacteriological Study of the Three Sites in Ain Sebaa-Zenata Region after the Installation of the Anti-pollution Station of the East Coast of Grand Casablanca

Salinity-induced chemical, mechanical, and behavioral changes in marine microalgae

Application of uniform design to evaluate the different conditions on the growth of algae Prymnesium parvum

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