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Impact of terrestri...
Impact of terrestrial runoff on organic matter, trophic state, and phytoplankton in a tropical, upland reservoir
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- Trinh, Duc Anh (författare)
- Uppsala universitet,Institutionen för geovetenskaper,Vietnam Acad Sci & Technol, Inst Chem ICH, A18,18 Hoang Quoc Viet, Hanoi, Vietnam
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Luu, Thi Nguyet Minh (författare)
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Trinh, Quan Hong (författare)
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Tran, Hai Sy (författare)
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Tran, Tien Minh (författare)
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Le, Thi Phuong Quynh (författare)
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Duong, Thuy Thi (författare)
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- Orange, Didier (författare)
- SFRI, IRD, iEES Paris UMR 242, Hanoi, Vietnam.;Inst Rech Dve IRD Eco & Sols, UMR 210, Pl Viala, Montpellier, France.
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- Janeau, Jean Louis (författare)
- SFRI, IRD, iEES Paris UMR 242, Hanoi, Vietnam.
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- Pommier, Thomas (författare)
- Univ Lyon 1, UMR CNRS 5557, Lab Ecol Microbienne, USC INRA 1364, Bat G Mendel,43 Blvd 11 Novembre 1918, F-69622 Villeurbanne, France.
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- Rochelle-Newall, Emma (författare)
- SFRI, IRD, iEES Paris UMR 242, Hanoi, Vietnam.;IRD, iEES Paris, UMR 242, 32 Ave Henri Varagnat, Bondy, France.
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(creator_code:org_t)
- 2015-10-14
- 2016
- Engelska.
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Ingår i: Aquatic Sciences. - : Springer Science and Business Media LLC. - 1015-1621 .- 1420-9055. ; 78:2, s. 367-379
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The impact of organic matter inputs from agricultural, forest and domestic sources on aquatic processes has been considerably less studied in tropical reservoirs relative to temperate systems despite the high number of these small aquatic systems in the tropics. Here we present the results of an in situ mesocosm study that examined the impact of allochthonous organic matter on a headwater reservoir in Northern Vietnam. We examined the impact of wastewater and soils from floodplain paddies, Acacia mangium plantations and from upland slopes on the metabolic status of the reservoir. The addition of floodplain paddy soils to the reservoir water led to a rapid switch in metabolic status from net autotrophic to net heterotrophic. In contrast, the addition of wastewater in low concentrations had less impact on the metabolic status of the reservoir, reflecting the low population density in the area. The addition of floodplain paddy soils also increased phytoplankton diversity and evenness relative to the control. In summary, soils from floodplain paddies and from A. mangium plantations had the highest impact on the reservoir, with upland soils and wastewater having less of an impact. We also found that primary production in this reservoir was nitrogen limited. In order to avoid accelerating the impact of runoff on the reservoir, future management options should perhaps focus on minimizing water and sediment runoff from upstream paddy fields and from A. mangium plantations. These results also underline the importance of studying these upland tropical water bodies that can contribute an important but, on the whole, ignored part of the global carbon balance.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Limiting factor
- Aquatic mesocosm
- Incubation
- Vietnam
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Trinh, Duc Anh
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Luu, Thi Nguyet ...
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Trinh, Quan Hong
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Tran, Hai Sy
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Tran, Tien Minh
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Le, Thi Phuong Q ...
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Duong, Thuy Thi
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Orange, Didier
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Janeau, Jean Lou ...
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Pommier, Thomas
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Rochelle-Newall, ...
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