High mortality of Red Sea zooplankton under ambient solar radiation
| العنوان: | High mortality of Red Sea zooplankton under ambient solar radiation |
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| المؤلفون: | Beatriz Carreja, Mohsen M. El-Sherbiny, Sathianeson Satheesh, Susana Agustī, Gopikrishna Mantha, Ali M. Al-Aidaroos, Carlos M. Duarte |
| المساهمون: | King Abdulaziz City for Science and Technology |
| المصدر: | PLoS ONE Digital.CSIC. Repositorio Institucional del CSIC instname PLoS ONE, Vol 9, Iss 10, p e108778 (2014) |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Food Chain, Ultraviolet Rays, lcsh:Medicine, Atmospheric sciences, Zooplankton, Water column, Solar Energy, Animals, Marine ecosystem, Ecosystem, lcsh:Science, Indian Ocean, Multidisciplinary, integumentary system, business.industry, Ecology, lcsh:R, fungi, Organisms, Biology and Life Sciences, Biota, Solar energy, Plankton, Invertebrates, Food web, Environmental science, lcsh:Q, Seawater, business, Research Article |
| الوصف: | © 2014 Al-Aidaroos et al. High solar radiation along with extreme transparency leads to high penetration of solar radiation in the Red Sea, potentially harmful to biota inhabiting the upper water column, including zooplankton. Here we show, based on experimental assessments of solar radiation dose-mortality curves on eight common taxa, the mortality of zooplankton in the oligotrophic waters of the Red Sea to increase steeply with ambient levels of solar radiation in the Red Sea. Responses curves linking solar radiation doses with zooplankton mortality were evaluated by exposing organisms, enclosed in quartz bottles, allowing all the wavelengths of solar radiation to penetrate, to five different levels of ambient solar radiation (100%, 21.6%, 7.2%, 3.2% and 0% of solar radiation). The maximum mortality rates under ambient solar radiation levels averaged (±standard error of the mean, SEM) 18.4±5.8% h-1, five-fold greater than the average mortality in the dark for the eight taxa tested. The UV-B radiation required for mortality rates to reach 1/2 of maximum values averaged (±SEM) 12±5.6 h-1% of incident UVB radiation, equivalent to the UV-B dose at 19.2±2.7 m depth in open coastal Red Sea waters. These results confirm that Red Sea zooplankton are highly vulnerable to ambient solar radiation, as a consequence of the combination of high incident radiation and high water transparency allowing deep penetration of damaging UV-B radiation. These results provide evidence of the significance of ambient solar radiation levels as a stressor of marine zooplankton communities in tropical, oligotrophic waters. Because the oligotrophic ocean extends across 70% of the ocean surface, solar radiation can be a globally-significant stressor for the ocean ecosystem, by constraining zooplankton use of the upper levels of the water column and, therefore, the efficiency of food transfer up the food web in the oligotrophic ocean. This project was funded by the Deanship of Scientific Research (DSR), King Abdulaziz University (grant no. 1-150/1433 HiCi) |
| تدمد: | 1932-6203 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16466c27f97a821a709450d5e9729c36 https://pubmed.ncbi.nlm.nih.gov/25309996 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....16466c27f97a821a709450d5e9729c36 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19326203 |
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