Macroalgae Blooms and their Effects on Seagrass Ecosystems  

作　　者：HAN Qiuying LIU Dongyan 

机构地区：[1]Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, CAS, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, CAS Experimental Station of Integrated Coastal Environment in Muping, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences

出　　处：《Journal of Ocean University of China》2014年第5期791-798,共8页中国海洋大学学报（英文版）

基　　金：funded by the Natural Science Foundation of China (41106099);CAS Scientific Project of Innovation and Interdisciplinary, the Ministry of Science and Technology Project Foundation (2014FY210600);Yantai Science and Technology Bureau (2011061);the Natural Science Foundation of Shandong Province (ZR 2009EQ006)

摘　　要：Seagrass decline caused by the macroalgae blooms is becoming a common phenomenon throughout temperate and tropical regions. We summarized the incidence of macroalgae blooms throughout the world and their impact on seagrass beds by direct and indirect ways. The competition for living space and using resources is the most direct effect on seagrass beds when macroalgae are blooming in an aquatic ecosystem. The consequence of macroalgae blooms(e.g., light reduction, hypoxia, and decomposition) can produce significant indirect effects on seagrass beds. Light reduction by the macroalgae can decrease the growth and recruitment of seagrasses, and decomposition of macroalgae mats can increase the anoxic and eutrophic conditions, which can further constrict the seagrass growth. Meanwhile, the presence of seagrass shoots can provide substrate for the macroalgae blooms. Controlling nutrient sources from the land to coastal waters is a general efficient way for coastal management. Researching into the synergistical effect of climate change and anthropognic nutrient loads on the interaction between searsasses and macroalgae can provide valuable information to decrease the negative effects of macroalgae blooms on seagrasses in eutrophic areas.Seagrass decline caused by the macroalgae blooms is becoming a common phenomenon throughout temperate and tropical regions. We summarized the incidence of macroalgae blooms throughout the world and their impact on seagrass beds by direct and indirect ways. The competition for living space and using resources is the most direct effect on seagrass beds when macroalgae are blooming in an aquatic ecosystem. The consequence of macroalgae blooms（e.g., light reduction, hypoxia, and decomposition） can produce significant indirect effects on seagrass beds. Light reduction by the macroalgae can decrease the growth and recruitment of seagrasses, and decomposition of macroalgae mats can increase the anoxic and eutrophic conditions, which can further constrict the seagrass growth. Meanwhile, the presence of seagrass shoots can provide substrate for the macroalgae blooms. Controlling nutrient sources from the land to coastal waters is a general efficient way for coastal management. Researching into the synergistical effect of climate change and anthropognic nutrient loads on the interaction between searsasses and macroalgae can provide valuable information to decrease the negative effects of macroalgae blooms on seagrasses in eutrophic areas.

关 键 词：EUTROPHICATION DECLINE SEAGRASSES macroalgae blooms 

分 类 号：Q178.53[生物学—水生生物学]