Effects of agricultural projects on nutrient levels in Lake Bera (Tasek Bera), Peninsular Malaysia

Gharibreza, Mohammadreza; Raj, John Kuna; Yusoff, Ismail; Ashraf, Muhammad Aqeel; Othman, Zainudin; Tahir, Wan Zakaria Wan Muhamad

doi:10.1016/j.agee.2012.12.004

Cited by 22 publications

(12 citation statements)

References 27 publications

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“…Finally, there is the impact of oil palm production itself. Fertilizers, pesticides, and herbicides are inevitably washed away, contributing to eutrophication of water bodies and negatively affecting water quality and aquatic organisms (Bilotta & Brazier, ; Kemp et al ., ; Gharibreza et al ., ). In addition, streams and rivers near oil palm mills are often contaminated with palm oil mill effluent (POME) due to leaks (Ahmad, Ismail & Bhatia, ).…”

Section: Resultsmentioning

confidence: 97%

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

et al. 2016

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Oil palm plantations have expanded rapidly in recent decades. This large-scale land-use change has had great ecological, economic, and social impacts on both the areas converted to oil palm and their surroundings. However, research on the impacts of oil palm cultivation is scattered and patchy, and no clear overview exists. We address this gap through a systematic and comprehensive literature review of all ecosystem functions in oil palm plantations, including several (genetic, medicinal and ornamental resources, information functions) not included in previous systematic reviews. We compare ecosystem functions in oil palm plantations to those in forests, as the conversion of forest to oil palm is prevalent in the tropics. We find that oil palm plantations generally have reduced ecosystem functioning compared to forests: 11 out of 14 ecosystem functions show a net decrease in level of function. Some functions show decreases with potentially irreversible global impacts (e.g. reductions in gas and climate regulation, habitat and nursery functions, genetic resources, medicinal resources, and information functions). The most serious impacts occur when forest is cleared to establish new plantations, and immediately afterwards, especially on peat soils. To variable degrees, specific plantation management measures can prevent or reduce losses of some ecosystem functions (e.g. avoid illegal land clearing via fire, avoid draining of peat, use of integrated pest management, use of cover crops, mulch, and compost) and we highlight synergistic mitigation measures that can improve multiple ecosystem functions simultaneously. The only ecosystem function which increases in oil palm plantations is, unsurprisingly, the production of marketable goods. Our review highlights numerous research gaps. In particular, there are significant gaps with respect to socio-cultural information functions. Further, there is a need for more empirical data on the importance of spatial and temporal scales, such as differences among plantations in different environments, of different sizes, and of different ages, as our review has identified examples where ecosystem functions vary spatially and temporally. Finally, more research is needed on developing management practices that can offset the losses of ecosystem functions. Our findings should stimulate research to address the identified gaps, and provide a foundation for more systematic research and discussion on ways to minimize the negative impacts and maximize the positive impacts of oil palm cultivation.

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Section: Resultsmentioning

confidence: 97%

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

et al. 2016

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“…Based on these outcomes he stated that yearly suspended sediment yields from river basins in many unindustrialized states could be likely to twofold within almost 20 years. Most reservoirs are constructed to be operational for 50-100 years, before sedimentation makes them useless (Gharibreza et al 2013a). The existing confirmation concerning the influences of anthropogenic activities and land use change on the sediment loads of the world's rivers, is still less clear-cut.…”

Section: Response Of Sediment Yield To Land Use Changesmentioning

confidence: 99%

“…Information on the bases of fluxes in diverse constituents of a budget offers further limitations (Gharibreza et al 2013a). Information on the bases of fluxes in diverse constituents of a budget offers further limitations (Gharibreza et al 2013a).…”

Section: Response Of Suspended Sediment Budget To Land Use Changesmentioning

confidence: 99%

“…2.15) were assessed implementing PSIAC model using consistent sediment yield data dumped in reservoir built in the outlet of these catchments (Gharibreza et al 2013a). Response erosion severity and suspended sediment yield to land use changes of five small catchments (Amrovan, Atray, Ali Abad, Ebrahim Abad, Royan), Semnan Province, Iran (Fig.…”

Section: Sub-catchments (Amrovan Atray Ali Abad Ebrahim Abad Royan)mentioning

confidence: 99%

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Application of the SWAT Model for Water Components Separation in Iran

Hosseini¹,

Ashraf²

2015

Springer Hydrogeology

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“…Water bodies can be contaminated due to water transportation activities, release of toxic chemicals, leaks to water body or due to oil spill, wastage deposition and landfill seepages (Gharibreza et al 2013). Environmental pollution may also be due to the release of oil, chemicals and other substances to land or land use and occupation that change the quality of the land.…”

mentioning

confidence: 99%