Chlorophyll a fluorescence as an indicator of establishment of Zostera marina transplants on the southern coast of Korea

doi:2010.25.2.89

Algae > Volume 25(2); 2010 > Article

Algae 2010;25(2): 89-97. doi: https://doi.org/10.4490/algae.2010.25.2.089

Wen-Tao Li¹^,2, Jung-Im Park¹, Sang Rul Park¹, Xiu-mei Zhang² and Kun-Seop Lee¹^,*

¹Department of Biological Sciences, Pusan National University, Busan 609-735, Korea,
²Department of Marine Fisheries, Ocean University of China, Qingdao 266003, PR China

ABSTRACT

To test the feasibility of using chlorophyll a fluorescence to assess the establishment success of seagrass transplants, photosynthetic characteristics of eelgrass Zostera marina transplants were measured using a Diving-pulsed amplitude modulation fluorometer in Jindong Bay on the southern coast of Korea. Maximum quantum yield (Fv/Fm), photosynthetic efficiency (α), saturating irradiance (Ek) and maximum electron transport rate (ETRmax) of transplants and reference plants in a nearby transplant site were measured using the fluorometer for 5 months. Additionally, shoot morphology, individual shoot weight and productivity of transplants and reference plants were also monitored. Shoot height, leaf weight and productivity of transplants were significantly reduced during the first two or three months after transplantation compared to those of reference plants, and then increased to the levels of reference plants. Characteristics of chlorophyll a fluorescence, including Fv/Fm, α, Ek and ETRmax of transplants were also significantly reduced in the initial period, but recovered slightly sooner than shoot morphology or leaf productivity. These results indicated that after transplantation, Z. marina transplant photosynthesis recovered faster than shoot morphology, biomass or productivity. Thus, chlorophyll a fluorescence can be used as an indicator for early assessment of the status of eelgrass transplants without destructive sampling.

Key words: chlorophyll a fluorescence; electron transport rate; maximum quantum yield; photosynthetic efficiency