DYNAMIC CHANGES IN PHYTOPLANKTON COMMUNITY STRUCTURE AFTER THERMAL SHOCK AND CHLORINATION IN A SUBTROPICAL BAY: AN EXPERIMENTAL STUDY

Authors

Zhi-Bing Jiang, State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China. 2Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China.
Yi-Bo Liao, Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China
Jing-Jing Liu, Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China.
Quan-Zhen Chen, Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China.
Jiang-Ning Zeng, State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China. 2Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China.Follow
Gen-Hai Zhu, Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China.

Abstract

Natural phytoplankton collected from the Yueqing Bay was exposed to a series of heat shock temperatures and chlorine dosages in a laboratory for simulating its passage through coastal power plant cooling systems. A short-term thermal shock (30 min) had no appreciable effect on the microalgae community for temperature elevation of 4-12°C in all seasons. However, the adverse effects of chlorination on the microalgae were considerably more severe than those of a thermal shock in terms of dominant succession, species richness, diversity, evenness, and community composition. Moreover, chlorination strongly influenced the diversity indices throughout a 15-d culture period, indicating an evident lagging effect on the injured cells of entrained microalgae. The dominance of small phytoplankton species (r-strategists, e.g., Melosira moniliformis, Nitzschia longissima, and Skeletonema costatum) gradually increased during chlorine dosage range from 1.0 to 3.2 mg L-1. A typical chlorine dosage of 1-2 mg L-1 in cooling systems was found to influence the entrained subtropical phytoplankton community structure.

Recommended Citation

Jiang, Zhi-Bing; Liao, Yi-Bo; Liu, Jing-Jing; Chen, Quan-Zhen; Zeng, Jiang-Ning; and Zhu, Gen-Hai (2014) "DYNAMIC CHANGES IN PHYTOPLANKTON COMMUNITY STRUCTURE AFTER THERMAL SHOCK AND CHLORINATION IN A SUBTROPICAL BAY: AN EXPERIMENTAL STUDY," Journal of Marine Science and Technology: Vol. 22: Iss. 5, Article 13.
DOI: 10.6119/JMST-013-1011-2
Available at: https://jmstt.ntou.edu.tw/journal/vol22/iss5/13