Weitere Kapitel dieses Buchs durch Wischen aufrufen
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.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
Aiken, George R., Heileen Hsu-Kim, and Joseph N. Ryan. 2011. Influence of dissolved organic matter on the environmental fate of metals, nanoparticles, and colloids. Environmental Science & Technology 45 (8): 3196–3201. CrossRef
Carlson, Kimberly M., Lisa M. Curran, Gregory P. Asner, Alice McDonald Pittman, Simon N. Trigg, and J. Marion Adeney. 2013. Carbon emissions from forest conversion by Kalimantan oil palm plantations. Nature Climate Change 3: 283–287. CrossRef
Carlson, Kimberly M., Lisa M. Curran, Alexandra G. Ponette-González, Dessy Ratnasari, Neli Lisnawati Ruspita, Yadi Purwanto, Kate A. Brauman, and Peter A. Raymond. 2014. Influence of watershed-climate interactions on stream temperature, sediment yield, and metabolism along a land use intensity gradient in Indonesian Borneo. Journal of Geophysical Research – Biogeosciences 119 (6): 1110–1128. CrossRef
Ciais, Philippe, Christopher Sabine, Govindasamy Bala, Laurent Bopp, Victor Brovkin, Josep Canadell, Abha Chhabra, Ruth DeFries, James Galloway, Martin Heimann, Christopher Jones, Corrine Le Quéré, Ranga B. Myneni, Shilong Piao, and Peter Thornton. 2013. Carbon and other biogeochemical cycles. In Climate change 2013: The physical science basis. Contribution of Working Group I to the fifth assessment report of the Intergovernmental Panel on Climate Change, ed. Thomas F. Stocker, Dahe Qin, Gian-Kasper Plattner, Melinda Tignor, Simon K. Allen, Judith Boschung, Alexander Nauels, Yu Xia, Vincent Bex, and Pauline M. Midgley, 465–570. Cambridge: Cambridge University Press.
Cloern, James E. 1987. Turbidity as a control on phytoplankton biomass and productivity in estuaries. Continental Shelf Research 7 (11–12): 1367–1381. CrossRef
Coble, Paula G. 1996. Characterisation of marine and terrestrial DOM in seawater using excitation-emission matrix spectroscopy. Marine Chemistry 51 (4): 325–346. CrossRef
Fellman, Jason B., David V. D’Amore, Eran Hood, and Richard D. Boone. 2008. Fluorescence characteristics and biodegradability of dissolved organic matter in forest and wetland soils from coastal temperate watersheds in Southeast Alaska. Biogeochemistry 88 (2): 169–184. CrossRef
Fonte, Ellen S., Luciana S. Carneiro, Adriano Caliman, Reinaldo L. Bozelli, Francisco De A. Esteves, and Vinicius F. Farjalla. 2011. Effects of resources and food web structure on bacterioplankton production in a tropical humic lagoon. Journal of Plankton Research 33 (10): 1596–1605. CrossRef
Gandois, Laure, Alexander R. Cobb, Chieng Hei Ing, Linda Lim Biaw Leng, Kamariah Abu Salim, and Charles F. Harvey. 2013. Impact of deforestation on solid and dissolved organic matter characteristics of tropical peat forests: implications for carbon release. Biogeochemistry 114 (1–3): 183–199. CrossRef
Hossler, Katie, and James E. Bauer. 2013. Amounts, isotopic character, and ages of organic and inorganic carbon exported from rivers to ocean margins: 1. Estimates of terrestrial losses and inputs to the Middle Atlantic Bight. Global Biogeochemical Cycles 27: 1–16. CrossRef
Hooijer, Aljosja, Susan Page, J.G. Canadell, Marcel Silvius, Jaap Kwadijk, H. Wösten, and Jyrki Jauhiainen. 2010. Current and future CO 2 emissions from drained peatlands in Southeast Asia. Biogeosciences 7: 1505–1514. CrossRef
Hudson, Naomi, Andy Baker, and Darren Michael Reynolds. 2007. Fluorescence analysis of dissolved organic matter in natural, waste and polluted waters—A review. River Research and Applications 23 (6): 631–649. CrossRef
Langner, Andreas, Frédéric Achard, Christelle Vancutsem, Jean-Francois Pekel, Dario Simonetti, Giacomo Grassi, Kanehiro Kitayama, and Mikiyasu Nakayama. 2015. Assessment of above-ground biomass of Borneo forests through a new data-fusion approach combining two pan-tropical biomass maps. Land 4 (3): 656–669. CrossRef
Maie, Nagamitsu, Satoshi Sekiguchi, Akira Watanabe, Kiyoshi Tsutsuki, Youhei Yamashita, Lulie Melling, Kaelin M. Cawley, Eikichi Shima, and Rudolf Jaffé. 2014. Dissolved organic matter dynamics in the oligo/meso-haline zone of wetland-influenced coastal rivers. Journal of Sea Research 91: 58–69. CrossRef
MathWorks. 2012. MATLAB: The language of technical computing. Natick: The MathWorks Inc.
Meybeck, Michel. 1982. Carbon, nitrogen, and phosphorus transport by world rivers. American Journal of Science 282: 401–450. CrossRef
Mostofa, Khan M.G., Cong-Qiang Liu, Takahito Yoshioka, Davide Vione, Yunlin Zhang, and Hiroshi Sakugawa. 2013. Fluorescent dissolved organic matter in natural waters. In Photobiogeochemistry of organic matter, ed. Khan M.G. Mostofa, Takahito Yoshioka, Abdul Mottaleb, and Davide Vione, 429–560. Berlin: Springer. CrossRef
Ohno, Tsutomu, and Rasmus Bro. 2006. Dissolved organic matter characterisation using multiway spectral decomposition of fluorescence landscapes. Soil Science Society of America Journal 70 (6): 2028–2037. CrossRef
Page, Susan E., John O. Rieley, and Christopher J. Banks. 2011. Global and regional importance of the tropical peatland carbon pool. Global Change Biology 17 (2): 798–818. CrossRef
Pusch, Martin, Douglas M. Fiebig, Ingrid Brettar, Heinrich Eisenmann, Bonnie K. Ellis, Louis A. Kaplan, Maurice A. Lock, Markus W. Naegeli, and Walter Traunspurger. 1998. The role of micro-organisms in the ecological connectivity of running waters. Freshwater Biology 40 (3): 453–495. CrossRef
R Development Core Team. 2013. R: A language and environment for statistical computing. Vienna: R Foundation for Statistical Computing.
Reynolds, Darren Michael. 2003. Rapid and direct determination of tryptophan in water using synchronous fluorescence spectroscopy. Water Research 37 (13): 3055–3060. CrossRef
Richey, Jeffrey E., John I. Hedges, Allan H. Devol, Paul D. Quay, Reynaldo Victoria, Luiz Martinelli, and Bruce R. Forsberg. 1990. Biogeochemistry of carbon in the Amazon River. Limnology and Oceanography 35 (2): 352–371. CrossRef
SADIA, Aidenvironment, and Earthsight Investigations. 2015. Sarawak oil palm concessions. Global Forest Watch. http://data.globalforestwatch.org/datasets/ff96c17423404ac6951ad77c8cf3f743_7. Accessed 19 July 2018.
Stedmon, Colin A., Stiig Markager, and Rasmus Bro. 2003. Tracing dissolved organic matter in aquatic environments using a new approach to fluorescence spectroscopy. Marine Chemistry 82 (3–4): 239–254. CrossRef
Schlünz, Birger, and Ralph R. Schneider. 2000. Transport of terrestrial organic carbon to the oceans by rivers: Re-estimating flux- and burial rates. International Journal of Earth Sciences 88 (4): 599–606. CrossRef
Yamashita, Youhei, Rudolf Jaffé, Nagamitsu Maie, and Eiichiro Tanoue. 2008. Assessing the dynamics of dissolved organic matter (DOM) in coastal environments by excitation emission matrix fluorescence and parallel factor analysis (EEM-PARAFAC). Limnology and Oceanography 53 (5): 1900–1908. CrossRef
- Spatial Variations in Dissolved and Particulate Organic Carbon in the Kemena and Tatau Rivers, Sarawak
- Springer Singapore
- Chapter 12