Regionalization of the Red Sea Based on Phytoplankton Phenology: A Satellite Analysis

Kheireddine, Malika; Mayot, Nicolas; Ouhssain, Mustapha; Jones, Burton H.

doi:10.1029/2021jc017486

Cited by 8 publications

(10 citation statements)

References 65 publications

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“…A community break could have been expected in our data as the Gulf of Aqaba and the northern Red Sea have been recently identified as two distinct bioregions (Kheireddine et al, 2021). This has been attributed to the phytoplankton phenology, which is linked to the physical conditions occurring in their respective areas.…”

Section: Symbiodiniaceae Genotypes Across Latitudesmentioning

confidence: 52%

“…This supplies cold, nutrient-rich waters at the surface due to thermohaline circulation as well as wind forces (Kheireddine et al, 2021 and references therein). The northern Red Sea is influenced by the general cyclonic circulation observed in this area, as well as the permanent presence of mesoscale features (i.e., cyclonic and anticyclonic eddies) (Kheireddine et al, 2021;Papagiannopoulos et al, 2021). For example, in coastal areas where coral reefs are present, summer phytoplankton bloom can be observed due to local circulation features and the presence of corals that lead to an injection of nutrients within the surface layer (Papagiannopoulos et al, 2021).…”

Section: Symbiodiniaceae Genotypes Across Latitudesmentioning

confidence: 99%

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From the shallow to the mesophotic: a characterization of Symbiodiniaceae diversity in the Red Sea NEOM region

et al. 2023

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IntroductionThe northern Red Sea has been coined a refuge for reef corals due to the exceptional thermal tolerance of these organisms. With ocean warming threatening coral reefs worldwide, a panoptic characterization of corals living in extreme conditions may provide insights into future responses of corals to environmental change. Among other factors, the genotype of the endosymbiotic algae in the family Symbiodiniaceae has been shown to have major implications on the distribution and resilience of their coral hosts. In this study, we aim at genotyping the Symbiodiniaceae communities associated with three depth generalist and one depth specialist coral species, characterized by the ability to withstand environmental conditions that are apparently limiting for other corals and occurring in a unique geographical region.MethodsWe sampled 50 corals from the northern Saudi Arabian Red Sea and the Gulf of Aqaba, covering a 97 m bathymetric gradient. We used high-throughput ITS2 gene sequencing and recovered different patterns of host–algal associations.Results and discussionThe majority of the recovered algal genotypes appeared host- and environment-specific, while others were more widely distributed. At large, coral specimens were overwhelmingly associated with symbionts from the genus Cladocopium and specifically with many previously undescribed genotypes. This suggests the selection of specific genotypes, which might confer resistance and/or resilience to their host counterparts. Interestingly, we found a limited association with Durusdinium spp. and other known tolerant taxa in mesophotic corals in the northern Red Sea, but not in the Gulf of Aqaba. The broad absence of Durusdinium spp., typically ascribed to be stress tolerant, warrants further investigation into Symbiodiniaceae species that convey environmental resilience. Our data will serve as a baseline to explore the occurrence of specific symbionts that might be contributing to coral acclimation and adaptation and to assay how biodiversity might be impacted if subjected to increasing stressors.

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Section: Symbiodiniaceae Genotypes Across Latitudesmentioning

confidence: 52%

Section: Symbiodiniaceae Genotypes Across Latitudesmentioning

confidence: 99%

From the shallow to the mesophotic: a characterization of Symbiodiniaceae diversity in the Red Sea NEOM region

et al. 2023

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“…We further found that the TMBAA for cluster II showed small changes over the entire period (Extended Data Fig. 9d), indicating relatively stable phenological cycles for those phytoplankton blooms 32,77 .…”

Section: Correlations With Sst and Sst Gradientmentioning

confidence: 66%

Coastal phytoplankton blooms expand and intensify in the 21st century

Dai

Yang

Zhao

et al. 2023

Nature

151

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Phytoplankton blooms in coastal oceans can be beneficial to coastal fisheries production and ecosystem function, but can also cause major environmental problems1,2—yet detailed characterizations of bloom incidence and distribution are not available worldwide. Here we map daily marine coastal algal blooms between 2003 and 2020 using global satellite observations at 1-km spatial resolution. We found that algal blooms occurred in 126 out of the 153 coastal countries examined. Globally, the spatial extent (+13.2%) and frequency (+59.2%) of blooms increased significantly (P < 0.05) over the study period, whereas blooms weakened in tropical and subtropical areas of the Northern Hemisphere. We documented the relationship between the bloom trends and ocean circulation, and identified the stimulatory effects of recent increases in sea surface temperature. Our compilation of daily mapped coastal phytoplankton blooms provides the basis for global assessments of bloom risks and benefits, and for the formulation or evaluation of management or policy actions.

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“…Kehidupan fitoplankton di perairan laut umumnya diatur oleh parameter oseanografi dalam hal ini parameter fisik (Kheireddine et al, 2021;Mikaelyan et al, 2020), kimia (Mishra et al, 2022;Neri et al, 2022), dan biologi (Mikaelyan et al, 2020). Sinergitas parameter itu mempengaruhi aktivitas fitoplankton, seperti halnya mempengaruhi produksi bahan organik melalui proses fotosintetis (Mohammed et al, 2018;Petrou et al, 2016), demikian pula berpengaruh terhadap distribusinya berdasarkan ruang dan waktu (Tambaru et al, 2021;Khan et al, 2015).…”

Section: Pendahuluanunclassified

Keterkaitan Parameter Oseanografi dengan Fitoplankton di Perairan Pesisir Maros Sulawesi Selatan

et al. 2022

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Penelitian ini bertujuan melakukan analisis keterkaitan parameter oseanografi dengan fitoplankton di perairan pesisir Maros, Sulawesi Selatan. Penelitian dilakukan pada dua zona yaitu zona pesisir, dan zona Sungai (S3). Untuk zona pesisir dibagi menjadi tiga bagian: zona pantai (A), zona pertengahan (B), dan zona laut lepas (C). Analisis Cluster dan PCA digunakan untuk mengevaluasi masing-masing parameter lingkungan, demikian pula keterkaitannya dengan fitoplankton. Hasil penelitian menunjukkan bahwa parameter penciri di zona A seperti kecerahan, nitrit dan amoniak masih mendukung aktivitas fitoplankton. Hal ini terlihat dari nilai produktivitas primer fitoplankton yang tinggi. Sebaliknya pada zona C, dukungan parameter-parameter itu terdeteksi lemah terhadap aktivitas fitoplankton, hal itu terlihat dari rendahnya nilai produktivitas primer fitoplankton. Di zona B, parameter-parameter penciri terkadang sama di zona A, namun lebih sejalan dengan zona C. Artinya bahwa nilai produktivitas primer fitoplankton juga tinggi. Berdasarkan hal itu, fitoplankton masih dapat beraktivitas dengan baik karena parameter oseanografi masih bersesuaian dengan kehidupannya.

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Regionalization of the Red Sea Based on Phytoplankton Phenology: A Satellite Analysis

Cited by 8 publications

References 65 publications

From the shallow to the mesophotic: a characterization of Symbiodiniaceae diversity in the Red Sea NEOM region

From the shallow to the mesophotic: a characterization of Symbiodiniaceae diversity in the Red Sea NEOM region

Coastal phytoplankton blooms expand and intensify in the 21st century

Keterkaitan Parameter Oseanografi dengan Fitoplankton di Perairan Pesisir Maros Sulawesi Selatan

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