Dataset for: Simulating cell death in the termination of Karenia brevis blooms: Implications for predicting aerosol toxicity vectors to humans

A non-linear lysis term for simulation of K. brevis HAB termination on the West Florida Shelf is introduced, with the assumption that particle encounters of planktonic microalgae and bacteria can be described as the square of the phytoplankton biomass. This formulation also accounts for nutrient-limitation of K. brevis as a precondition for susceptibility to bacterial and viral attack, and potentially programmed cell death. Two model simulations were run of linear and non-linear lysis cases. Model output was compared against observed weekly maximum K. brevis concentrations, with statistical metrics calculated over three HAB phases during 2001. Introduction of the non-linear lysis term increased the modeling efficiency by 0.68 due to improved reproduction of the bloom termination.

引入了一个非线性裂解项，用于模拟西佛罗里达陆架上短裸甲藻（K. brevis）有害藻华（HAB）的终止过程，假设浮游微藻与细菌的颗粒相遇可描述为浮游植物生物量的平方。该公式还将短裸甲藻的营养限制视为其易受细菌和病毒攻击（以及潜在程序性细胞死亡）的前提条件。针对线性和非线性裂解两种情况进行了两次模型模拟，将模型输出与观测到的每周短裸甲藻最大浓度对比，并基于2001年三个有害藻华阶段计算统计指标。由于非线性裂解项能更准确再现藻华终止过程，其引入使建模效率提升了0.68。