生态科学2003，Vol.22Issue(3)：199-204,212,7.
还原态氮源在微小原甲藻大规模赤潮中的重要性--动力学模型
The importance of reduced nitrogen in a natural Prorocentrum minimum bloom - a model approach
摘要
Abstract
In the late spring and early summer of 1998, an extensive Prorocentrum minimum bloom developed in the ChoptankRiver of Chesapeake Bay, USA. A series experiments were conducted to determine the physiological characteristics of P.minimum in relation to its bloom development. These physiological characteristics in term of nitrogen uptake were appliedtoward the development of a simulation model of P. minimum bloom dynamics. Several scenarios were tested with this model todemonstrate the importance of some key ecological and physiological processes in the development and maintenance of P.minimum blooms. Model results suggested an initial pulse of sufficient nitrogen from river flow was essential for the bloominitiation, but the composition of this initial nutrient delivery was not significant in bloom initiation. However, the bloom wassustained by reduced nitrogen sources after its establishment. The physiological preference for reduced nitrogen uptake by P.minimum therefore plays an importance role in bloom maintenance, with reduced nitrogen representing more than 90% of totalnitrogen uptake in the bloom peak period. The model further suggested that the ability of P. minimum to maintain a significantuptake of nitrogen under low light or dark conditions would be advantageous in its bloom development.关键词
有害藻华/氮吸收/微小原甲藻/模型Key words
Harmful algal bloom/Nitrogen uptake/P minimum/Model分类
农业科技引用本文复制引用
范春雷,Glibert.P. M...还原态氮源在微小原甲藻大规模赤潮中的重要性--动力学模型[J].生态科学,2003,22(3):199-204,212,7.基金项目
US-ECOHAB program （）
