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المؤلفJassem A., Al-Thani
المؤلفSoliman, Yousria
المؤلفAl-Maslamani, Ibrahim A.
المؤلفYigiterhan, Oguz
المؤلفAl-Ansari, Ebrahim M.A.S.
تاريخ الإتاحة2023-11-27T08:42:48Z
تاريخ النشر2023-04-05
اسم المنشورEstuarine, Coastal and Shelf Science
المعرّفhttp://dx.doi.org/10.1016/j.ecss.2023.108260
الاقتباسAl-Thani, J. A., Soliman, Y., Al-Maslamani, I. A., Yigiterhan, O., & Al-Ansari, E. M. (2023). Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf. Estuarine, Coastal and Shelf Science, 283, 108260.‏
الرقم المعياري الدولي للكتاب02727714
معرّف المصادر الموحدhttps://www.sciencedirect.com/science/article/pii/S0272771423000501
معرّف المصادر الموحدhttp://hdl.handle.net/10576/49706
الملخصThe 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/m3) was about 1.4 times the winter concentration (mean = 0.58 mg/m3) (p > 0.05). Photo-protective carotenoids content in summer (0.59 mg/m3) 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.
راعي المشروعThis work was funded by QU Grant [QUST-2-CAS-2019-44].
اللغةen
الناشرAcademic Press
الموضوعChlorophyll-a
Nutrients
Hypoxia
Physical drivers
Arabian Gulf
العنوانPhysical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf
النوعArticle
رقم المجلد283
Open Access user License http://creativecommons.org/licenses/by/4.0/
dc.accessType Open Access


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