Lignin phenols in the paleoenvironmental reconstruction of high mountain peatlands from Atlantic Rainforest, SE - Brazil

Lourençato, Lúcio Fábio; Bernardes, Marcelo; Buch, Andressa Cristhy; Silva-Filho, Emmanoel V.

doi:10.1016/j.catena.2018.09.013

Cited by 3 publications

(6 citation statements)

References 55 publications

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“…The cluster and PCA analyses suggest that there are no significant seasonal differences in these rivers. Previous studies have reported that the sediment load from the basin to the delta was not a seasonal pattern; when combined with comparable precipitation during our two sampling seasons, our observations matched this conclusion (Martin et al, 2018;Staub and Gastaldo, 2000). The close correlation of factor 2 with OC% and 8 in the PCA suggests factor 2 relates to the source of the organic matter (Fig.…”

Section: Origin Of Sediment Organic Matter In Tropical Peat-draining supporting

confidence: 90%

“…The Rajang River drainage basin covers an area of about 50 000 km 2 . Elevations exceed 2000 m, and hill slopes are steep, generally in excess of 258 m in the interior highlands and 208 m in lower areas (Martin et al, 2018). The three small rivers (the Maludam, Simunjan, and Sebuyau) are blackwater rivers that drain extensive peatlands (Fig.…”

Section: Study Region and Sample Collectionmentioning

confidence: 99%

“…The river length of Maludam is 33 km. For the Sebuyau and Simunjan, river length is 58 and 54 km, respectively (Martin et al, 2018). However, hydraulic information for these two rivers is largely unknown.…”

Section: Study Region and Sample Collectionmentioning

confidence: 99%

“…The higher values of 8 found in our studied systems were linked to vegetation types (trees dominated) (Zaccone et al, 2008) and partially caused by peat draining and intense human activity near the watersheds (e.g., land-use change and logging activities), as reported previously (Milliman and Farnsworth, 2011;Moore et al, 2013;Rieley et al, 2008). Much of the peatland neighboring the Simunjan and Sebuyau catchments has been changed to oil palm plan-tations (Martin et al, 2018). The terrigenous OM has been affected by diagenesis, as (Ad/Al) V varies markedly among the different systems (Table 3).…”

Section: Comparison With Systems Worldwide: Ligninmentioning

confidence: 99%

“…The rivers draining these peatlands are typically rich in lignin phenols and humic substances and are often referred to as "blackwater" rivers (Baum et al, 2007;Cook et al, 2017;Moore et al, 2011). However, knowledge of the fate of terrigenous organic matter in such peat-draining rivers and estuaries remains limited (Gandois et al, 2014;Hall et al, 2015;Lourençato et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Distribution and degradation of terrestrial organic matter in the sediments of peat-draining rivers, Sarawak, Malaysian Borneo

Zhu

Zhang

et al. 2019

Biogeosciences

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Abstract. Tropical peatlands are one of the largest pools of terrestrial organic carbon (OCterr); however, our understanding of the dynamics of OCterr in peat-draining rivers remains limited, especially in Southeast Asia. This study used bulk parameters and lignin phenol concentrations to investigate the characteristics of OCterr in a tropical peat-draining river system (the main channel of the Rajang and three smaller rivers: the Maludam, Simunjan, and Sebuyau) in the western part of Sarawak, Malaysian Borneo. The depleted δ13C levels and lignin composition of the organic matter indicates that the most important plant source of the organic matter in these rivers is woody angiosperm C3 plants, especially in the three small rivers sampled. The diagenetic indicator ratio, i.e., the ratio of acid to aldehyde of vanillyl phenols ((Ad∕Al)V), increased with decreasing mean grain size of sediment from the small rivers. The selective sorption of acid relative to aldehyde phenols might explain the variations in the (Ad∕Al)V ratio. Elevated (Ad∕Al)V values observed from the Maludam's sediments may also be attributed to source plant variations. The (Ad∕Al)V ratio appears to be related to the C∕N ratio (the ratio of total organic carbon to total nitrogen) in the Rajang and small rivers. In small rivers, a quick decline of C∕N ratios is a response to the slower modification of (Ad∕Al)V ratios due to better preservation of lignin phenols. An accumulation of lignin phenols with higher total nitrogen percentages (TN%) in the studied systems was observed. Most of the OCterr discharged from the Rajang and small river systems was material derived from woody angiosperm plants with limited diagenetic alteration before deposition and thus could potentially provide significant carbon to the atmosphere after degradation.

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Section: Origin Of Sediment Organic Matter In Tropical Peat-draining supporting

confidence: 90%

Section: Study Region and Sample Collectionmentioning

confidence: 99%

Section: Study Region and Sample Collectionmentioning

confidence: 99%

Section: Comparison With Systems Worldwide: Ligninmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Distribution and degradation of terrestrial organic matter in the sediments of peat-draining rivers, Sarawak, Malaysian Borneo

Zhu

Zhang

et al. 2019

Biogeosciences

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Review on Conversion of Lignin Waste into Value-Added Resources in Tropical Countries

Lim

Yusup

Loy

et al. 2020

Waste Biomass Valor

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The potential of lignin is huge mainly in refining into biofuels and useful chemicals. Tropical countries have large reserve of biomass; however, lignin is underutilized. Hence, this paper aims to evaluate the lignin potential from biomass and current utilization level in tropical countries such as Brazil, Africa, and Southeast Asia. This paper relevant information is derived from multiple sources, included papers from ISI and Scopus indexed journals, international databases, and online patent search engine. In short, Brazil, has the largest lignin potential, mainly from sugarcane industry, and the highest lignin utilization level at TRL8. Africa had limited information and the least reported amount of studies on biomass available in the studied regions. Southeast Asia countries have oil palm and sugarcane as their largest lignin sources, and a TRL4 lignin utilization level. In Malaysia, oil palm refinery residues are the largest sources of lignin, which are readily to be extracted and processed into value-added products. Lignin utilization industry is also supported by some government policies. In this case, integrated biorefinery is a promising approach in achieving feasible conversion and utilization of lignin in Malaysia, where it adds value to various agricultures wastes produced, while also reducing the waste disposal problems.

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Multi-proxy records of paleoclimatic changes in sediment core ST2 from the southern Zhejiang-Fujian muddy coastal area since 1650 yr BP

Loh

Chang

et al. 2022

Continental Shelf Research

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Lignin phenols in the paleoenvironmental reconstruction of high mountain peatlands from Atlantic Rainforest, SE - Brazil

Cited by 3 publications

References 55 publications

Distribution and degradation of terrestrial organic matter in the sediments of peat-draining rivers, Sarawak, Malaysian Borneo

Distribution and degradation of terrestrial organic matter in the sediments of peat-draining rivers, Sarawak, Malaysian Borneo

Review on Conversion of Lignin Waste into Value-Added Resources in Tropical Countries

Multi-proxy records of paleoclimatic changes in sediment core ST2 from the southern Zhejiang-Fujian muddy coastal area since 1650 yr BP

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