Litter production and decomposition of mangrove in the Northern Coast of Aceh Besar district, Aceh province

Abstract

Mangrove vegetation plays an important role and supplier of organic matter derived from litter fall and litter decomposition The purposes of this research was to obtain the productivity of mangrove vegetation by analyzing the litter fall, decomposition coefficient, and percentage of litter decomposed in the northern coast of Aceh Besar District. The research used purpossive sampling method to determine the 6 stations devided into 2 substations (landward and seaward). This research was conducted in July to September 2016. Each substation was put one of the litter trap. The litter trap method was used to know the mangrove litter production. Litter decomposition focused on R. mucronata leaves were studied by using litterbag technique. The litter bags were made of synthetic nylon which had size 20cm x 30cm and mesh size was 1 x 1.25 mm2. There were 3 types of mangrove found, litter production of Rhizophora mucronata as much as 79.21 g/m2/day, Avicennia marina as much as 0.70 g/m2/day and Sonneratia alba was 17.46 g/m2/day. Based on the substation influenced by tidal, mangrove litters found in the seaward higher than in the landward, the average litter fall was 52.05 g/m2/day and 43.32 g/m2/day. Result of mangrove decomposition showed that the percentage of decomposition for the 49th day in the seaward substation was 48.58% and the landward was 41.53%. Mangrove litter decomposition increased during the time at both substation. Decomposition rate of litter for Rhizopora mucronata species classified very quickly where the substation on the seaward was 0.012 (d−1) and landward was 0.010 (d−1). The half-time took in the leaf litter of mangroves for the landward was 69 days and seaward was 57 days, R. mucronata leaves litter decomposited in seaward substation was faster than landward.

Cellulase enzyme activity of the bacteria isolated from mangrove ecosystem in Aceh Besar and Banda Aceh

“…Station 5 located in mangrove un rehabilitated contained more litter production than mangrove rehabilitated. [29] informed that the mangrove litter production in Northern coast of Aceh was 97.37 gm -2 day -1 indicated high litter production in mangrove unrehabilitated, and litter was the highest contribution of organic carbon in the soil. Moreover, [38] mentioned that enzymatic activity is associated with habitat characteristics i.e.…”

“…and Avicennia sp. are commonly find in this mangrove ecosystem [29]. Several studies on cellulolytic bacteria associated with mangrove habitat have been studied [26,30,9,31], however there is no data and information about the cellulolytic bacteria and their activity in research area.…”

Vegetation structure and carbon stock of restored mangrove on abandoned shrimp pond in the International Mangrove Botanical Garden Rama IX, Thailand

“…While, the litterfall of young R. mucronata was relatively high (5.22 t ha -1 year -1 ) (Wang'ondu et al 2014). Litter of mangrove forest had fast decomposition (Dewiyanti et al 2019) and carbon sequestration in mangrove soil and vegetation biomass was combined with carbon fluxes via litterfall (Rovai et al 2021). In addition, high litter decomposition rate can cycle back the accumulation of soil carbon to the soil layer (Salmo et al 2013) and it plays an important role in the ecosystem services, such as nutrient cycling and carbon storage (Rocha et al 2022).…”