Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
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. � 2016 Elsevier Ltd
Laboratoire PROTEE-EBMA (EA 3819), Universit� de Toulon, CS 60584, Toulon, France
Recommended Citation:
Bog� G.,Lespilette M.,Jamet D.,et al. Role of DOP on the alkaline phosphatase activity of size fractionated plankton in coastal waters in the NW Mediterranean Sea (Toulon Bay, France)[J]. Marine Pollution Bulletin,2017-01-01,117(2018-01-02)