Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Scientific reports
2025
|
| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/39934321/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1868266244710334466 |
|---|---|
| author | Theodorou, Iason Krokos, George Gittings, John A Darmaraki, Sofia Hoteit, Ibrahim Raitsos, Dionysios E |
| author_facet | Theodorou, Iason Krokos, George Gittings, John A Darmaraki, Sofia Hoteit, Ibrahim Raitsos, Dionysios E Theodorou, Iason Krokos, George Gittings, John A Darmaraki, Sofia Hoteit, Ibrahim Raitsos, Dionysios E |
| collection | PubMed - marine biology |
| contents | Response of Red Sea phytoplankton biomass to marine heatwaves and cold-spells. Theodorou, Iason Krokos, George Gittings, John A Darmaraki, Sofia Hoteit, Ibrahim Raitsos, Dionysios E Phytoplankton Biomass Indian Ocean Cold Temperature Chlorophyll A Hot Temperature Seawater Ecosystem Chlorophyll In tropical oceans, phytoplankton experience significant alterations during marine heatwaves (MHWs), yet the consequences of reduced or absent marine cold-spells (MCSs) on these microscopic algae are currently overlooked. Synergistically combining in situ measurements, Argo-float data, remotely-sensed observations, and hydrodynamic model outputs, we explore such relationships in the Red Sea. Results show a long-term (1982 to 2018) gradual increase in MHW days (5-20 days/decade) and a clear decrease in MCS days (10-30 days/decade). Compound extreme temperature and chlorophyll-a events (Chl-a - an index of phytoplankton biomass) exhibit consistently lower Chl-a concentrations during MHWs and higher ones during MCSs, particularly in the northern and southern Red Sea. In these regions, during the main phytoplankton-growth period, the presence of MHWs/MCSs leads to respective Chl-a anomalies in 94% of the cases. Yet, phytoplankton responses in the central Red Sea are more complex, most likely linked to the region's highly dynamic circulation (e.g., mesoscale anti-cyclonic eddies), and multiple nutrient sources. In the naturally warm and stratified ecosystem of the Red Sea, where deeper mixed layers enhance the transfer of nutrient-rich waters to the lit zone, the substantial reduction of MCSs could be more impactful for phytoplankton than the gradual rise of MHWs. |
| format | Artículo científico |
| id | pubmed_39934321 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Scientific reports |
| record_format | pubmed |
| spellingShingle | Response of Red Sea phytoplankton biomass to marine heatwaves and cold-spells. Theodorou, Iason Krokos, George Gittings, John A Darmaraki, Sofia Hoteit, Ibrahim Raitsos, Dionysios E Phytoplankton Biomass Indian Ocean Cold Temperature Chlorophyll A Hot Temperature Seawater Ecosystem Chlorophyll Response of Red Sea phytoplankton biomass to marine heatwaves and cold-spells. Theodorou, Iason Krokos, George Gittings, John A Darmaraki, Sofia Hoteit, Ibrahim Raitsos, Dionysios E Phytoplankton Biomass Indian Ocean Cold Temperature Chlorophyll A Hot Temperature Seawater Ecosystem Chlorophyll In tropical oceans, phytoplankton experience significant alterations during marine heatwaves (MHWs), yet the consequences of reduced or absent marine cold-spells (MCSs) on these microscopic algae are currently overlooked. Synergistically combining in situ measurements, Argo-float data, remotely-sensed observations, and hydrodynamic model outputs, we explore such relationships in the Red Sea. Results show a long-term (1982 to 2018) gradual increase in MHW days (5-20 days/decade) and a clear decrease in MCS days (10-30 days/decade). Compound extreme temperature and chlorophyll-a events (Chl-a - an index of phytoplankton biomass) exhibit consistently lower Chl-a concentrations during MHWs and higher ones during MCSs, particularly in the northern and southern Red Sea. In these regions, during the main phytoplankton-growth period, the presence of MHWs/MCSs leads to respective Chl-a anomalies in 94% of the cases. Yet, phytoplankton responses in the central Red Sea are more complex, most likely linked to the region's highly dynamic circulation (e.g., mesoscale anti-cyclonic eddies), and multiple nutrient sources. In the naturally warm and stratified ecosystem of the Red Sea, where deeper mixed layers enhance the transfer of nutrient-rich waters to the lit zone, the substantial reduction of MCSs could be more impactful for phytoplankton than the gradual rise of MHWs. |
| title | Response of Red Sea phytoplankton biomass to marine heatwaves and cold-spells. |
| topic | Phytoplankton Biomass Indian Ocean Cold Temperature Chlorophyll A Hot Temperature Seawater Ecosystem Chlorophyll |
| url | https://pubmed.ncbi.nlm.nih.gov/39934321/ |