Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak

Keitaro Fukushima, Naoko Tokuchi, Hiromitsu Samejima, Jason Hon, Yuichi Kano

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.

Original languageEnglish
Title of host publicationAdvances in Asian Human-Environmental Research
PublisherSpringer International Publishing
Pages217-233
Number of pages17
DOIs
Publication statusPublished - Jan 1 2020

Publication series

NameAdvances in Asian Human-Environmental Research
ISSN (Print)1879-7180
ISSN (Electronic)1879-7199

Fingerprint

particulate organic carbon
peatland
dissolved organic carbon
plantation
spatial variation
river
suspended sediment
fluorescence spectroscopy
carbon
Southeast Asia
terrestrial ecosystem
factor analysis
Malaysia
fluorescence
carbon dioxide
watershed
spatial distribution
disturbance
matrix
cause

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Geography, Planning and Development
  • Nature and Landscape Conservation
  • Management, Monitoring, Policy and Law

Cite this

Fukushima, K., Tokuchi, N., Samejima, H., Hon, J., & Kano, Y. (2020). Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak. In Advances in Asian Human-Environmental Research (pp. 217-233). (Advances in Asian Human-Environmental Research). Springer International Publishing. https://doi.org/10.1007/978-981-13-7513-2_12

Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak. / Fukushima, Keitaro; Tokuchi, Naoko; Samejima, Hiromitsu; Hon, Jason; Kano, Yuichi.

Advances in Asian Human-Environmental Research. Springer International Publishing, 2020. p. 217-233 (Advances in Asian Human-Environmental Research).

Research output: Chapter in Book/Report/Conference proceedingChapter

Fukushima, K, Tokuchi, N, Samejima, H, Hon, J & Kano, Y 2020, Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak. in Advances in Asian Human-Environmental Research. Advances in Asian Human-Environmental Research, Springer International Publishing, pp. 217-233. https://doi.org/10.1007/978-981-13-7513-2_12
Fukushima K, Tokuchi N, Samejima H, Hon J, Kano Y. Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak. In Advances in Asian Human-Environmental Research. Springer International Publishing. 2020. p. 217-233. (Advances in Asian Human-Environmental Research). https://doi.org/10.1007/978-981-13-7513-2_12
Fukushima, Keitaro ; Tokuchi, Naoko ; Samejima, Hiromitsu ; Hon, Jason ; Kano, Yuichi. / Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak. Advances in Asian Human-Environmental Research. Springer International Publishing, 2020. pp. 217-233 (Advances in Asian Human-Environmental Research).
@inbook{b3da0140926c401e967d599d6a7cc460,
title = "Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak",
abstract = "It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.",
author = "Keitaro Fukushima and Naoko Tokuchi and Hiromitsu Samejima and Jason Hon and Yuichi Kano",
year = "2020",
month = "1",
day = "1",
doi = "10.1007/978-981-13-7513-2_12",
language = "English",
series = "Advances in Asian Human-Environmental Research",
publisher = "Springer International Publishing",
pages = "217--233",
booktitle = "Advances in Asian Human-Environmental Research",

}

TY - CHAP

T1 - Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak

AU - Fukushima, Keitaro

AU - Tokuchi, Naoko

AU - Samejima, Hiromitsu

AU - Hon, Jason

AU - Kano, Yuichi

PY - 2020/1/1

Y1 - 2020/1/1

N2 - It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.

AB - It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate organic carbon (DOC and POC, respectively) and suspended sediment (SS) concentrations in the Kemena and Tatau rivers of Sarawak, Malaysia, in 2011, 2012 and 2013. There are large variations in DOC and POC concentrations in both rivers and their spatial patterns also differ. DOC concentrations did not vary over the sampling years and mainly depended on the distribution of tropical peatland within the watershed. Excitation-emission matrix (EEM) fluorescence spectroscopy with parallel factor analysis showed that DOC supplied from peatland is distinctive though the fluorescence characteristics do not change with the creation of plantations. SS and POC concentrations were slightly higher in logged forests and plantations and significantly higher in main rivers than in intact forests. The results suggest that DOC concentrations are geographically controlled by peatland distribution, while intensive plantation development and the resultant soil disturbance can cause an increase in terrestrial POC discharges to the ocean.

UR - http://www.scopus.com/inward/record.url?scp=85075190125&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075190125&partnerID=8YFLogxK

U2 - 10.1007/978-981-13-7513-2_12

DO - 10.1007/978-981-13-7513-2_12

M3 - Chapter

AN - SCOPUS:85075190125

T3 - Advances in Asian Human-Environmental Research

SP - 217

EP - 233

BT - Advances in Asian Human-Environmental Research

PB - Springer International Publishing

ER -