کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5757525 | 1622719 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impacts of turbidity on corals: The relative importance of light limitation and suspended sediments
ترجمه فارسی عنوان
اثرات کثیف بر روی مرجان: اهمیت نسبی محدودیت نور و رسوبات معلق
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کلمات کلیدی
مرجان، ضعف نور، غلظت رسوبات معلق، لایروبی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
چکیده انگلیسی
As part of an investigation of the effects of water quality from dredging/natural resuspension on reefs, the effects of suspended sediment concentrations (SSCs) (0, 30, 100 mg Lâ 1) and light (~ 0, 1.1, 8.6 mol photons mâ 2 dâ 1) were examined alone and in combination, on the corals Acropora millepora, Montipora capricornis and Porites spp. over an extended (28 d) period. No effects were observed at any sediment concentrations when applied alone. All corals in the lowest light treatments lost chlorophyll a and discoloured (bleached) after a week. Coral mortality only occurred in the two lowest light treatments and was higher when simultaneously exposed to elevated SSCs. Compared to water quality data collected during large dredging programs and natural resuspension events (and in the absence of sediment deposition as a cause-effect pathway) these data suggest the light reduction associated with turbidity poses a proportionally greater risk than effects of elevated SSCs alone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 117, Issues 1â2, 15 April 2017, Pages 161-170
Journal: Marine Pollution Bulletin - Volume 117, Issues 1â2, 15 April 2017, Pages 161-170
نویسندگان
Pia Bessell-Browne, Andrew P. Negri, Rebecca Fisher, Peta L. Clode, Alan Duckworth, Ross Jones,