کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5757537 | 1622719 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of DOP on the alkaline phosphatase activity of size fractionated plankton in coastal waters in the NW Mediterranean Sea (Toulon Bay, France)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
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چکیده انگلیسی
The particulate material was fractionated into 5 size classes (> 90 μ, 50-90 μ, 6-50 μ, 1-6 μ, and < 1 μ). DOP was analysed as easily (DOPh, DOPpa) and less easily hydrolysable compounds (DOPox). Based on Vmax, 94% of the high affinity AP activity was due to < 50 μ cells and 77% to < 1 μ cells. 83% of the low affinity activity was due to > 90 μ cells. The high affinity activities were negatively correlated with DOP for the < 50 μ classes. These correlations came mostly from DOPox. They were more significant when NO3 + NO2 concentrations were high, when DIP concentrations were low and when N/P ratio was > 10. At lower N/P ratios, AP was more significantly correlated with DIP. The low affinity activities showed significant negative correlation with DIP and with DOP and DOPox for the > 90 μ class. The inhibition of AP activities by DOPox may originate from stable compounds interfering with DIP for the control of AP synthesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 117, Issues 1â2, 15 April 2017, Pages 264-273
Journal: Marine Pollution Bulletin - Volume 117, Issues 1â2, 15 April 2017, Pages 264-273
نویسندگان
Gérard Bogé, Magali Lespilette, Dominique Jamet, Jean-Louis Jamet,