Page 38 - IPCoSME 2021

1 INTERNATIONAL POSTGRADUATE CONFERENCE ON SCIENCE AND MARINE ENVIRONMENT 2021
st
(IPCoSME 2021)
“Environmental Sustainability Enhancement Through the Collaboration of Sciences”

RD-06

THE PHOTOSYNTHETIC CHARACTERISTICS AND LEAF LITTER
PRODUCTION OF MANGROVE FORESTS IN TRANG, SOUTHERN THAILAND

PABLINA CADIZ 1,2,3 , SUTINEE SINUTOK2 2,4 AND PONLACHART
CHOTIKARN 1,2,3,4*

1 Marine and Coastal Resources Institute, Faculty of Environmental Management,
Prince of Songkla University, Hat Yai 90110, Thailand
2 Coastal Oceanography and Climate Change Research Center, Prince of Songkla
University, Hat Yai, Songkhla 90110, Thailand
3 Silliman University Institute of Environmental and Marine Sciences, Dumaguete City,
Philippines 6200.
4 Faculty of Environmental Management, Prince of Songkla University, Hat Yai 90110,
Thailand

*Corresponding author email: ponlachart.c@psu.ac.th

Abstract: The significance of the study is to provide information on the photosynthetic
performance and litter production of planted (PLA) and natural (NAT) mangroves in Trang,

Southern Thailand. Relative chlorophyll content and other photosynthetic parameters such as

Phi2, PhiNO, PhiNPQ and PhiNPQt and litter fall production were determined between two
stands of mangroves. The measurements of photosynthetic parameters using photosynQ were

obtained to assess the health of the community structure in both stands. The t-test with unequal
variances confirmed the assumption of this study that there is no significant difference in any

measured photosynthetic parameter between the two stands (p > 0.05). Changes occurred

quarterly and in sites with different species. In terms of the litter production, significant
differences were found by stand (p < 0.001), season (p < 0.05), and site (SI (F)3,129( = 4.357,

p < 0.01 and KA (F)3,190( = 3.243, p > 0.01(. This study hypothesized that the PLA stands
have lower performance in photosynthetic activity and litter production than the NAT stands.

This study established the effects of land use changes on the PLA mangroves (planted in an
abandoned shrimp pond). The overall significance of the study is to highlight positive outcome

on the impacts of mangrove restoration, particularly in degraded mangrove stands due to land

use change.
Keywords: Ecology, mangroves, primary production, physiology, restoration

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