Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf
<p dir="ltr">The southern-central Arabian Gulf demonstrates a poor understanding of nutrients and chlorophyll dynamics in physical-biogeochemical settings. Here, using data of chlorophyll, nutrients and hydrographic parameters collected in two cruises in summer 2019 and winter 2020,...
محفوظ في:
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| مؤلفون آخرون: | , , , |
| منشور في: |
2023
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إضافة وسم
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| _version_ | 1864513529488343040 |
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| author | Jassem A. Al-Thani (17337871) |
| author2 | Yousria Soliman (234143) Ibrahim A. Al-Maslamani (17821187) Oguz Yigiterhan (14151006) Ebrahim M.A.S. Al-Ansari (17821190) |
| author2_role | author author author author |
| author_facet | Jassem A. Al-Thani (17337871) Yousria Soliman (234143) Ibrahim A. Al-Maslamani (17821187) Oguz Yigiterhan (14151006) Ebrahim M.A.S. Al-Ansari (17821190) |
| author_role | author |
| dc.creator.none.fl_str_mv | Jassem A. Al-Thani (17337871) Yousria Soliman (234143) Ibrahim A. Al-Maslamani (17821187) Oguz Yigiterhan (14151006) Ebrahim M.A.S. Al-Ansari (17821190) |
| dc.date.none.fl_str_mv | 2023-04-05T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.ecss.2023.108260 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Physical_drivers_of_chlorophyll_and_nutrients_variability_in_the_Southern-Central_Arabian_Gulf/25036565 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Biological sciences Plant biology Earth sciences Oceanography Environmental sciences Pollution and contamination Chlorophyll-a Nutrients Hypoxia Physical drivers Arabian Gulf |
| dc.title.none.fl_str_mv | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">The southern-central Arabian Gulf demonstrates a poor understanding of nutrients and chlorophyll dynamics in physical-biogeochemical settings. Here, using data of chlorophyll, nutrients and hydrographic parameters collected in two cruises in summer 2019 and winter 2020, we examined variability in nutrients and chlorophyll concentrations, and the driving mechanisms. Summer thermal stratification enhanced by intrusion of fresher surface water plume from the Arabian Sea developed a hypoxic zone (DO < 2.0 mL/L) below the thermocline. Nitrate and ammonium summer concentrations (2.24 ± 0.36, 1.70 ± 0.17 μM) were about 3 times the winter concentrations. Nutrient stoichiometry showed a Redfield-like nitrogen/phosphorus (N:P) ratio in summer (15.9:1) and a nitrogen limitation in winter (N:P = 4:1). Chlorophyll-a content in summer (mean = 0.80 mg/m<sup>3</sup>) was about 1.4 times the winter concentration (mean = 0.58 mg/m<sup>3</sup>) (p > 0.05). Photo-protective carotenoids content in summer (0.59 mg/m<sup>3</sup>) was about 2.7 times their winter concentration. Winter cooling resulted in downwelling of dense water on the shallow coastal banks, which enhanced near bottom oxygen concentrations and swept away nutrient-rich water resulting in lower winter chlorophyll. This research features aspects of the physical and biogeochemical drivers underpinning the dynamics of nutrients and chlorophyll in the central Gulf.</p><h2>Other Information</h2><p dir="ltr">Published in: Estuarine, Coastal and Shelf Science<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ecss.2023.108260" target="_blank">https://dx.doi.org/10.1016/j.ecss.2023.108260</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_0eee0a10f8d99121b57994b55519b4c7 |
| identifier_str_mv | 10.1016/j.ecss.2023.108260 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/25036565 |
| publishDate | 2023 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian GulfJassem A. Al-Thani (17337871)Yousria Soliman (234143)Ibrahim A. Al-Maslamani (17821187)Oguz Yigiterhan (14151006)Ebrahim M.A.S. Al-Ansari (17821190)Biological sciencesPlant biologyEarth sciencesOceanographyEnvironmental sciencesPollution and contaminationChlorophyll-aNutrientsHypoxiaPhysical driversArabian Gulf<p dir="ltr">The southern-central Arabian Gulf demonstrates a poor understanding of nutrients and chlorophyll dynamics in physical-biogeochemical settings. Here, using data of chlorophyll, nutrients and hydrographic parameters collected in two cruises in summer 2019 and winter 2020, we examined variability in nutrients and chlorophyll concentrations, and the driving mechanisms. Summer thermal stratification enhanced by intrusion of fresher surface water plume from the Arabian Sea developed a hypoxic zone (DO < 2.0 mL/L) below the thermocline. Nitrate and ammonium summer concentrations (2.24 ± 0.36, 1.70 ± 0.17 μM) were about 3 times the winter concentrations. Nutrient stoichiometry showed a Redfield-like nitrogen/phosphorus (N:P) ratio in summer (15.9:1) and a nitrogen limitation in winter (N:P = 4:1). Chlorophyll-a content in summer (mean = 0.80 mg/m<sup>3</sup>) was about 1.4 times the winter concentration (mean = 0.58 mg/m<sup>3</sup>) (p > 0.05). Photo-protective carotenoids content in summer (0.59 mg/m<sup>3</sup>) was about 2.7 times their winter concentration. Winter cooling resulted in downwelling of dense water on the shallow coastal banks, which enhanced near bottom oxygen concentrations and swept away nutrient-rich water resulting in lower winter chlorophyll. This research features aspects of the physical and biogeochemical drivers underpinning the dynamics of nutrients and chlorophyll in the central Gulf.</p><h2>Other Information</h2><p dir="ltr">Published in: Estuarine, Coastal and Shelf Science<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ecss.2023.108260" target="_blank">https://dx.doi.org/10.1016/j.ecss.2023.108260</a></p>2023-04-05T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.ecss.2023.108260https://figshare.com/articles/journal_contribution/Physical_drivers_of_chlorophyll_and_nutrients_variability_in_the_Southern-Central_Arabian_Gulf/25036565CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/250365652023-04-05T03:00:00Z |
| spellingShingle | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf Jassem A. Al-Thani (17337871) Biological sciences Plant biology Earth sciences Oceanography Environmental sciences Pollution and contamination Chlorophyll-a Nutrients Hypoxia Physical drivers Arabian Gulf |
| status_str | publishedVersion |
| title | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| title_full | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| title_fullStr | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| title_full_unstemmed | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| title_short | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| title_sort | Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf |
| topic | Biological sciences Plant biology Earth sciences Oceanography Environmental sciences Pollution and contamination Chlorophyll-a Nutrients Hypoxia Physical drivers Arabian Gulf |