Land-use effects on fluxes of suspended sediment, nitrogen and phosphorus from a river catchment of the Great Barrier Reef, Australia

Hunter, Heather; Walton, Richard S.

doi:10.1016/j.jhydrol.2008.04.003

Cited by 107 publications

(89 citation statements)

References 27 publications

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“…Previous work in tropical regions describes elevated sediment export from recently cleared agricultural catchments [Bramley and Roth, 2002;Douglas et al, 1999;Dunne, 1979;Hunter and Walton, 2008]. Similarly, we found that mean sediment yield was greater in the young oil palm stream than in mixed agroforest, logged forest, and intact forest sites (Figure 3).…”

Section: Sediment Yield and Oil Palm Plantationssupporting

confidence: 82%

“…Surprisingly, this mature plantation yielded more sediment than the young oil palm catchment during storm events. Although recovery of soil hydraulic properties, increased interception and ET, and plantation management (e.g., hillside erosion control and ground cover) may inhibit sediment export from maturing oil palm stands, we suspect that dense road networks within plantations drive sustained high sediment yields [Dunne, 1979;Hunter and Walton, 2008]. Research in northern Thailand indicates that total sediment input to streams from unpaved roads is similar to that from annual croplands, even though roads cover a small fraction of watershed land surface [Ziegler et al, 2002].…”

Section: Sediment Yield and Oil Palm Plantationsmentioning

confidence: 99%

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Influence of watershed‐climate interactions on stream temperature, sediment yield, and metabolism along a land use intensity gradient in Indonesian Borneo

et al. 2014

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Oil palm plantation expansion into tropical forests may alter physical and biogeochemical inputs to streams, thereby changing hydrological function. In West Kalimantan, Indonesia, we assessed streams draining watersheds characterized by five land uses: intact forest, logged forest, mixed agroforest, and young (<3 years) and mature (>10 years) oil palm plantation. We quantified suspended sediments, stream temperature, and metabolism using high-frequency submersible sonde measurements during month-long intervals between 2009 and 2012. Streams draining oil palm plantations had markedly higher sediment concentrations and yields, and stream temperatures, compared to other streams. Mean sediment concentrations were fourfold to 550-fold greater in young oil palm than in all other streams and remained elevated even under base flow conditions. After controlling for precipitation, the mature oil palm stream exhibited significantly greater sediment yield than other streams. Young and mature oil palm streams were 3.9°C and 3.0°C warmer than the intact forest stream (25°C). Across all streams, base flow periods were significantly warmer than times of stormflow, and these differences were especially large in oil palm catchments. Ecosystem respiration rates were also influenced by low precipitation. During an El Niño-Southern Oscillation-associated drought, the mature oil palm stream consumed a maximum 21 g O 2 m À2 d À1 in ecosystem respiration, in contrast with 2.8 ± 3.1 g O 2 m À2 d À1 during nondrought sampling. Given that 23% of Kalimantan's land area is occupied by watersheds similar to those studied here, our findings inform potential hydrologic outcomes of regional periodic drought coupled with continued oil palm plantation expansion.

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Section: Sediment Yield and Oil Palm Plantationssupporting

confidence: 82%

Section: Sediment Yield and Oil Palm Plantationsmentioning

confidence: 99%

Influence of watershed‐climate interactions on stream temperature, sediment yield, and metabolism along a land use intensity gradient in Indonesian Borneo

et al. 2014

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“…Dividing the export ratio for sugarcane by the export ratio for forest in the Tully basin gives a multiple of 46-fold, similar to our range of increase. Applying the same formula to data from the neighbouring Johnstone catchment where a 6-year study was conducted (Hunter and Walton 2008), the export ratios given for nitrate were 5.0-fold for sugarcane and 7.5-fold for bananas compared with 0.16-fold for forest, leading to multiples of 31-fold and 47-fold respectively. Hence, compared with natural forest, ∼26-47-fold more nitrate is exported from fertilised land.…”

Section: Concentration (µG Lmentioning

confidence: 99%

Relationships between land use and nutrient concentrations in streams draining a 'wet-tropics' catchment in northern Australia

Mitchell

Reghenzani²,

Faithful

et al. 2009

Mar. Freshwater Res.

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Abstract. Differences in stream nutrient concentrations typically reflect upstream differences in land use. In particular, nitrate concentrations are greatly increased by losses from nitrogen (N) fertiliser applied to areas of intensive cropping. In the present study, a relationship between the area of such land use and the nitrate concentrations in the receiving streams was predicted. This relationship was tested using several data sets from the Tully basin, in the wet-tropics bioregion of north Queensland, Australia. The proportions of fertiliser-additive land use (FALU), mostly sugarcane and bananas, were correlated with the concentrations of nutrients in streams that drain these land uses. The data compared included two longterm sampling studies in the Tully River catchment and more recent, broader catchment sampling and plot-scale studies in this region. A strong relationship was shown for nitrate, but weaker relationships were observed for other N-nutrient and P-nutrient forms. Comparisons were made with contemporary and historical land-use changes in the Tully basin. The strong relationship of FALU with nitrate provides evidence that the nitrate exports from this catchment are largely derived from fertiliser use. This relationship can be used to derive nitrate run-off coefficients for fertilised land use in catchment models or to monitor changes following management to reduce fertiliser usage.

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“…A cultura de cana-de-açúcar é uma cultura anual que necessita de uma alta demanda de nitrogênio (KRUSCHE et al, 2003), e a aplicação de fertilizantes nitrogenados pode aumentar a mineralização e as taxas de nitrifi cação, aumentando a concentração de nitrogênio nos corpos d'água (SILVA et al, 2007), especialmente no período seco. De fato, as microbacias agrícolas 230 da bacia do rio Corumbataí são compostas por uma mistura de cultivo de cana-de-açúcar e pastagem; assim, as altas concentrações de nitrato observadas devem ocorrer devido ao uso de fertilizantes que são carreados para os corpos d'água (HUNTER; WALTON, 2008).…”

Section: áGua Dos Riachos Da Bacia Do Rio Corumbataíunclassified

Métodos e técnicas de pesquisa em bacias hidrográficas

Moraes¹,

Lorandi²

2016

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Land-use effects on fluxes of suspended sediment, nitrogen and phosphorus from a river catchment of the Great Barrier Reef, Australia

Cited by 107 publications

References 27 publications

Influence of watershed‐climate interactions on stream temperature, sediment yield, and metabolism along a land use intensity gradient in Indonesian Borneo

Influence of watershed‐climate interactions on stream temperature, sediment yield, and metabolism along a land use intensity gradient in Indonesian Borneo

Relationships between land use and nutrient concentrations in streams draining a 'wet-tropics' catchment in northern Australia

Métodos e técnicas de pesquisa em bacias hidrográficas

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